JP5172108B2 - Tuner system, reservation changing method, program and recording medium used therefor - Google Patents

Description

  The present invention relates to reservation of a broadcast program, and more specifically, in a situation where a certain broadcast program is reserved, when the broadcast of the program or a program before the program is extended or changed, the program The reservation information is automatically changed so that the viewing, recording, or recording of the program affected by the extension or change can be correctly viewed, recorded, or recorded.

  In recent years, digital broadcasting data is distributed to homes using satellites such as digital CS broadcasting and digital BS broadcasting so that each home can enjoy high-definition television and music. Digital broadcasting using such satellites has hundreds of channels, and it is not easy for broadcast users to know what programs are currently being broadcast or are scheduled to be broadcast. Therefore, the broadcaster broadcasts an electronic program guide (EPG: Electric Program Guide) simultaneously with television and music, and receives / displays it with a dedicated tuner, so that the user can broadcast what program is currently broadcast. It is possible to know whether it is broadcast or scheduled to be broadcast. Even in existing analog terrestrial broadcasting, broadcast recipients can easily receive broadcast programs by transmitting EPG data using VBI (Vertical Blanking Interval) or using EPG data on the Internet. Some of them are In addition, since December 2003, digital broadcasting has started not only using satellites but also terrestrial digital broadcasting.

  In digital broadcasting, EPG data is transmitted as SI (Service Information) together with video, audio, and other information. Specific channel information is stored in SDT (Service Description Table) in SI, and program information is stored in EIT (Event Information Table). Standards related to SI information for digital broadcasting in Japan are defined in ARIB STD-B10, operational standards for digital terrestrial broadcasting are defined in ARIB TR-B14, Volume 4, and operational standards for satellite digital broadcasting are defined in ARIB TR-B15, Volume 4. ing.

  On the other hand, as AV broadcasting is digitized, each AV device is connected to connect a plurality of AV devices to each other, to control the other device, and to transfer video and audio streams. An AV device is networked by having a terminal based on the IEEE (Institut of Electrical and Electronics Engineers) 1394 serial bus standard (hereinafter referred to as IEEE 1394 standard) and connecting a code of the IEEE 1394 standard. In the IEEE 1394 standard, there are two modes for data transfer. One is called Asynchronous communication and mainly transfers commands for controlling devices. The other is called isochronous communication and is mainly used for transferring video and audio streams between devices. Stream transfer is an abstract concept that defines output and input plugs and channels on the 1394 serial bus to devices, and connects output plugs, channels, channels, and input plugs to logically connect between devices. By forming a typical transmission path, it is possible to transfer a stream between devices. The transmission line is a point-to-point connection from one output plug to one input plug through one channel, connection between the output plug and channel without specifying a pair of output plug and input plug, and channel and input plug. There is a Broadcast connection that makes a connection.

  The IEEE 1394 standard is standardized to “IEEE Std 1394-1995” as “IEEE Standard for a High Performance Serial Bus”. As a standard for controlling devices between AV devices connected using IEEE 1394, “AV / C Digital Interface Command Set General Specification” and the like have been standardized by 1394 TRADE ASSOCIATION (hereinafter referred to as AV / C). ).

  AV / C is a standard for one device to control the other device mainly when two different AV devices are connected. For example, as shown in FIG. 21, a BS digital satellite broadcasting tuner (8012) to which a BS digital broadcasting parabolic antenna (8006) is connected by a cable (8008) and a D-VHS deck (8013) are connected by an IEEE 1394 cable (8009). In the connected environment, the EPG of the tuner is displayed on the display (8005) connected to the tuner by the display cable (8007), and the reception of the digital satellite broadcasting program selected by the user is reserved and the D-VHS deck You can also schedule recording. That is, in AV / C, it is the main purpose that one device controls the other device with two devices connected one-to-one.

  Home Audio Video Interoperability (hereinafter referred to as HAVi) is standardized as a standard that can control a plurality of AV devices and manage resources such as functions of the AV devices. HAVi assumes the IEEE 1394 standard and the International Electrotechnical Commission (IEC) 61883 standard as a base network standard and stream transfer standard.

  HAVi classifies devices into the following four types. Full AV Device (hereinafter referred to as FAV) is a device equipped with all the functions of HAVi. FAV requires JAVA Virtual Machine (hereinafter referred to as VM). Intermediate AV Device (IAV) requires several software modules, but some are optional. IAV does not require JAVA_VM. FAV and IAV are devices that can be controllers if a display is attached. Basic AV Device (hereinafter referred to as “BAV”) is a Target device, and a JAVA upload module for controlling the BAV device stored in Self Describing Device Data (hereinafter referred to as “SDD”) is transferred to the FAV and controlled from the FAV. It is. Legacy AV Device (hereinafter LAV) is a device that does not have the HAVi function. The LAV corresponds to, for example, an AV device currently on the market.

FIG. 22 shows a software configuration example of HAVi. Each module of HAVi is defined as a Software Element (hereinafter referred to as SE). An SE_ID is assigned to identify each SE, and the SE_ID is composed of a 64-bit GUID assigned as a unique value to each device and a 16-bit swHandle that uniquely identifies the device. The SE_ID is assigned by the Messaging System (hereinafter referred to as MS). Each SE exchanges messages with each other via an MS, which is a module for exchanging messages between SEs, regardless of whether they are in the same device or in different devices connected by a network. Event Manager (hereinafter referred to as EM) broadcasts asynchronous change information of systems and modules to a plurality of SEs. As system change information, for example, there is information notifying that a bus reset has occurred. The Registry (hereinafter referred to as REG) registers information on individual SEs and searches for SE information. Communication Media Manager (hereinafter referred to as CMM) is an abstraction of IEEE 1394 message exchange so that SE can send and receive commands such as AV / C directly using IEEE 1394, and can be used from SE. The Resource Manager (hereinafter referred to as RM) reserves resources of the FCM (described later), or sends a target to a Device Control Module (hereinafter referred to as DCM) or a Functional Component Module (hereinafter referred to as FCM) as a target when a certain time comes. operate (hereinafter Scheduled Action) it and Scheduled Action manages the conduct of. A stream manager (hereinafter referred to as SM) manages a stream of video and audio. DCM Manager (hereinafter referred to as DCMM) installs or uninstalls DCM (described later) when a certain device is connected.

  The DCM operates as a software module in any FAV or IAV in the HAVi network for one device, and controls a specific device. That is, when a software module such as an application controls a specific device, the device can be controlled by accessing a DCM (or an FCM (described later)) associated with the device. The DCM also checks and manages whether Schedule Action for the device itself can be executed. A DCM includes a software module (FCM) that abstracts specific functions of zero or more devices. Currently, FCMs defined by HAVi include “TUNER”, “VCR”, “CLOCK”, “CAMERA”, “AV DISC”, “AMPLIFIER”, “DISPLAY”, “AV DISPLAY”, “MODEM”, and “WEB PROXY”. Therefore, for example, a device having a tuner function, a VCR function, and a clock (CLOCK) function has a DCM, a “TUNER” FCM, a “VCR” FCM, and a “CLOCK” FCM. The FCM also has a function for managing reservation of the function.

  Usually, the DCM (and FCM) for FAV and IAV itself is preinstalled in the device. The BAV DCM (and FCM) is installed on the FAV after being uploaded to the FAV or downloaded from the Internet or the like as described in the BAV SDD. If there is no FAV in the HAVi network, the one prepared in advance in the IAV or downloaded from the Internet or the like is installed. LAV DCM (and FCM) is installed in FAV or IAV in advance or downloaded from the Internet or the like.

The application is a so-called HAVi application, for example, a dubbing between two D-VHS or an EPG application. The application controls a specific target device by using an application program interface (hereinafter referred to as API) of each software module defined by HAVi. Data Driven Interaction constitute a (hereinafter DDI) Controller Yes Wayu Ru Level 1 user interface, a GUI of DCM and applications with DDI Target and DDI Data. Havelet is a level 2 user interface written in JAVA (registered trademark) and operating on FAV, and is a GUI of DCM or application. Whether a DCM or an application has a level 1 user interface or a level 2 user interface is registered in the REG as information on the software module. DCMs and applications may have both level 1 and level 2 interfaces.

  The SE_ID of system software elements such as MS, REG, EM, DCMM, RM, SM, and CMM is fixed for each device, but the assigned SE_ID for DCM, FCM, etc. is not fixed, and the MS is registered. Assign a different ID each time. Therefore, when a device reset occurs, a different SE_ID is assigned in DCM, FCM, etc., and after the reset device is restored, communication with the same DCM or FCM may not be possible. In order to avoid this, the HUID, which is a permanent and unique ID, is assigned to the DCM and FCM.

  In HAVi, SDD is defined separately. As part of the IEEE 1394 configuration ROM, the SDD stores information on the device such as the type of the device and an upload module for the BAV.

  In HAVi, the transfer of stream data such as video and audio follows the concept of the IEEE 1394 standard, and a connection is formed by connecting an abstract plug and a channel of a transmission path, and a stream is sent using the connection. ing. However, unlike the IEEE 1394 standard, the connection is formed by a route from the source FCM to the sink FCM. That is, the output plug of the device is connected from the output plug of the source FCM (this is called an attachment), the input plug of the device is connected from the output plug of the device through the channel of the transmission path, and the input plug of the device and the FCM of the sink Are connected and a connection is established. There are two types of HAVi connections: Point-To-Point connection and Broadcast connection, similar to the IEEE 1394 standard connection.

  The HAVi standard is standardized as “The HAVi Specification-Specification of the Home Audio / Video Interoperability (HAVi) Architecture”.

  Now, in the case of setting an EPG generation method and reservation recording when a plurality of AV devices are connected, a technique for setting a reservation by avoiding the conflict when a conflict occurs is disclosed (Patent Document 1). . In addition, a technique is disclosed in which a program can be recorded correctly even when a program is reserved and recorded, and the program broadcast is changed (for example, Patent Document 2 to Patent Document 5).

JP2004-207864 JP2003-9015A JP2003-134431A JP2004-7757 JP-A-2005-159526

  However, with the technique disclosed in Patent Document 1, when a reserved program is extended or an emergency broadcast is broadcast and the program schedule is changed, the target program cannot be recorded. Will occur. Further, in the technologies disclosed in Patent Documents 2 to 5, when a reserved program is extended, a program that cannot be recorded correctly when a plurality of programs are reserved appears or is used. It is very inconvenient because the person has to make the reservation again.

  For example, it is assumed that a recording reservation such as the EPG shown in FIG. 19 is made in a device connected as shown in FIG. In the connection example of FIG. 1, there are four devices: BS digital tuner and DVD-RW (8001), HDD and CS digital tuner (8002), HDD and D-VHS (8003), BS / CS digital tuner and display (8004). It is connected. Here, as shown in FIG. 19, for the professional baseball open game (5031) starting from 10:30 on the BS 101 channel, a recording reservation is made using the BS digital tuner indicated by 8001 and the HDD indicated by 8003. . In addition, a reservation for recording is made using a BS digital tuner and a DVD-RW indicated by 8001 for the amateur comic festival (5032) starting at 11:30 on the BS 103 channel. Here, if the broadcast of the BS 101 channel professional baseball open game is extended and broadcasted after 11:30, in the case of Patent Document 1, the channel selection is performed at 11:30, and from 11:30 to 8001 The BS digital tuner shown in Fig. 5 is selected by the BS 103, and another program is reserved on the DVD-RW. In addition, in the cases shown in Patent Document 2 to Patent Document 5, the professional baseball oven game is continuously recorded after 11:30, but is the recording of the amateur comic competition broadcast from 11:30 on the BS 103 correctly performed? Or the user has to re-set the recording reservation by himself.

  The present invention has been made to solve such problems. Even when a reserved program is extended, or when a broadcast schedule is changed due to an emergency broadcast or the like, the extended program or broadcast is provided. This is to enable a program whose schedule has been changed to be automatically recorded correctly until the end, a recording reservation, or a viewing reservation.

In order to solve the above-described problems, a tuner system according to the present invention includes a device that is influenced by a schedule change of a broadcast program on an AV network to which a plurality of tuner devices and recording devices are connected. A tuner system having a reservation change function for changing initial reservation information for a function of a device, SI information receiving means for receiving SI (Service Information) information which is information of a broadcast program, and the received said information SI information storing means for storing SI information, SI information comparing means for comparing SI information already stored in the SI information storing means with SI information newly received by the SI information receiving means, and the SI information The newly received SI information by the comparison means exists in the SI information storage means If it is determined that no, the SI information changing means for changing the contents of the SI information to save SI information received the new to the SI information storing means, and the newly received by the SI information comparing unit SI If the information is determined not to exist in the SI information storage means, determines that the program information of programs to be broadcast is changed, the program information change notification means for notifying the fact rescheduling programs broadcasted, Program information change event receiving means for receiving an event for notifying that the schedule of a program to be broadcast has been changed from the program information change notification means, and the function of each device or each device in response to the event reception and reservation information obtaining means for obtaining the initial reservation information against, of the initial reservation information acquired by the reservation information acquiring unit, wherein And reservation information survey means for extracting the initial reservation information that are affected by a set of schedule change, the program start judging the broadcast of the program according to the original reservation information that has been extracted by the reservation information investigation means it is determined whether or not already begun and means, the processing by the initial reservation information extracted by the reservation information checking means, and a reservation changing means for changing in accordance with the program start determination means according to judgment results for the initial reservation information, the reservation changing means , if it is determined that the already begun by the program according to the original reservation information the extracted said program start determining means includes reservation update means for changing the end time of the reservation of the person initial reservation information, the extracted If the program according to the original reservation information is determined not yet begun by the program start determination means, the person Hatsu予A first reservation information cancellation means for the cancellation of the information, the processing by the initial reservation information has been revoked by the first reservation information cancellation means, a first new reservation information changed in accordance with the schedule change of the program a first new reservation information generating means for generating, the first new reservation information of the reservation, the first new reservation means for performing on the function of the specified device or devices in the book, the first a first new reservation success determining means for reservation of new reservation means determines whether or not establishment of, not pre Symbol first new reservation success determining means is established reservation by the first new reservation means If it is determined that the device or device function is different from the device or device function specified in the reservation of the first new reservation information, the alternative reservation processing of the first new reservation information is performed. And an alternative reservation means for executing the processing.

In addition, the tuner system according to the present invention is adapted to each device or the function of each device that is affected by a schedule change of a broadcast program on an AV network to which a plurality of tuner devices and recording devices are connected . 1 is a tuner system having a reservation change function for changing the initial reservation information, SI information receiving means for receiving SI (Service Information) information, which is information of a broadcast program, and SI for storing the received SI information Information storage means; SI information comparison means for comparing SI information already stored in the SI information storage means with SI information newly received by the SI information receiving means; and If the received SI information is determined not to exist in the SI information storage means The newly received SI information is stored in the SI information storage means to change the content of the SI information, and the SI information newly received by the SI information comparing means is the SI information. If it is determined that there is no in the storage means, determines that the program information of programs to be broadcast is changed, the program information change notification means for notifying the fact rescheduling programs broadcasted, the program information change notification Means for receiving a program information change event receiving means for notifying that the schedule of the program to be broadcast has been changed from the means, and in response to the reception of the event , each device or an initial function for each device and reservation information acquisition means for acquiring reservation information, among the initial reservation information acquired by the reservation information acquisition means, the schedule varying of the program By the reservation information checking means for extracting the initial reservation information affected, and the program start determining means for determining whether the broadcast program according to the original reservation information extracted by the reservation information checking means has already begun, the the processing by the initial reservation information extracted by the reservation information checking means, and a reservation changing means for changing in accordance with a determination result by the program start determining means for this initial reservation information, the reservation changing means, said extracted and if it is determined that the already begun by the program is the program start determination means according to the initial reservation information, the reservation updating means for changing the end time of the reservation of the person initial reservation information, the extracted initially reserved If a program of the information is determined not yet begun by the program start determining means, to the cancellation of this person first opinions A first reservation information cancellation means, for processing by the initial reservation information has been revoked by the first reservation information cancellation means, a first for generating a first new reservation information changed in accordance with the schedule change of the program and the new reservation information generating means, the first new reservation information of the reservation, the first new reservation means for performing on the function of the specified device or devices in the book, the first new reservation means If the reservation is judged that the first new reservation success determining means for determining whether or not satisfied, the pre-Symbol first new reservation success determining means is reserved in the previous SL first new reservation means not satisfied And a cause reservation change means for changing the reservation based on the cause reservation information which is the cause of the reservation not being established, and after the reservation change of the cause reservation information by the cause reservation change means, The new reservation means performs the reservation of the first new reservation information again .

In addition, the tuner system according to the present invention is adapted to each device or the function of each device that is affected by a schedule change of a broadcast program on an AV network to which a plurality of tuner devices and recording devices are connected. 1 is a tuner system having a reservation change function for changing the initial reservation information, SI information receiving means for receiving SI (Service Information) information, which is information of a broadcast program, and SI for storing the received SI information Information storage means; SI information comparison means for comparing SI information already stored in the SI information storage means with SI information newly received by the SI information receiving means; and When it is determined that the received SI information does not exist in the SI information storage means The newly received SI information is stored in the SI information storage means to change the content of the SI information, and the SI information newly received by the SI information comparing means is the SI information. A program information change notification means for determining that the program information of the broadcast program has been changed and notifying the fact of the schedule change of the broadcast program when it is determined that the program information does not exist in the storage means; Means for receiving a program information change event receiving means for notifying that the schedule of the program to be broadcast has been changed from the means, and in response to the reception of the event, each device or an initial function for each device Of the initial reservation information acquired by the reservation information acquisition means for acquiring reservation information and the reservation information acquisition means, the schedule change of the program Reservation information surveying means for extracting initial reservation information affected by the program, program start determining means for determining whether or not broadcasting of the program related to the initial reservation information extracted by the reservation information surveying means has already started, and Reservation changing means for changing the processing based on the initial reservation information extracted by the reservation information examining means according to the determination result by the program start determining means for the initial reservation information, the reservation changing means being the extracted When it is determined that the program related to the initial reservation information has already started by the program start determination means, reservation update means for changing the reservation end time of the initial reservation information, and the extracted initial reservation information If the program start determining means determines that the program has not yet started, the initial reservation information is canceled. The first reservation information canceling means and the first reservation information that is changed in accordance with the schedule change of the program is generated for the processing by the initial reservation information canceled by the first reservation information canceling means. New reservation information generating means, first new reservation means for making reservation of the first new reservation information for the device or device function designated by the reservation, and reservation update of the reservation update means are established. If the reservation update success / failure determination means for determining whether or not the reservation update success / failure determination means determines that the reservation update in the reservation update means has not been established, the reason why the reservation update has not been established The reservation information investigation means after the reservation change of the cause reservation information by the cause reservation change means The initial reservation information extracted by the above is updated to information whose end time has been changed by the reservation update means .

  In this way, when SI information is received through broadcasting, the Internet, or the like, when the schedule of a program to be broadcast is changed and the information is broadcast, the program information change is notified to other systems, and the user Can accurately recognize the change.

  As described above, in the present invention, when a program information change event is received, the reservation affected by the change of the program can be changed in accordance with the schedule change of the program.

  As described above, in the present invention, when the reservation changed in accordance with the program schedule change conflicts with other reservations already reserved and cannot be reserved, another alternative function / device is searched for. Reservation information can be generated and reserved using alternative functions / devices.

  Further, when a program information change event is received, the reservation that is affected by the change of the program can be changed in accordance with the program schedule change. In addition, if the reservation changed in accordance with the program schedule change conflicts with other reservations that have already been reserved and cannot be reserved, the function / device used in the reservation that caused the conflict It is possible to search for a function / device substituting for, generate reservation information using the alternative function / device, and make a reservation.

Further, reservation change process according to the invention, the tuner system on AV network in which a plurality of tuners devices and recording devices are connected, said each device or each device is affected with the rescheduled program broadcast A reservation changing method for changing the initial reservation information for a function, wherein an SI information receiving step for receiving SI (Service Information) information, which is information of a broadcast program, and storing the received SI information in SI information SI information storing step stored in the means, SI information comparing step comparing SI information already stored in the SI information storing means and SI information newly received in the SI information receiving step, and the SI information comparison The newly received SI information in the step is stored in the SI information storage means. SI information changing step of changing the content of SI information by storing the newly received SI information in the SI information storage means when it is determined that it is not present, and the newly received SI information by the SI information comparison means A program information change notification step of determining that the program information of the broadcast program has been changed and notifying the fact of the schedule change of the broadcast program when it is determined that SI information does not exist in the SI information storage means; A program information change event receiving step for receiving an event for notifying that the schedule of the program to be broadcast has been changed in the program information changing step, and the function of each device or each device in response to the event reception initially the reservation information acquisition step of acquiring reservation information initially reserved information acquired by the reservation information acquisition step of relative Of, judgment and reservation information survey step of extracting the initial reservation information that are affected by the schedule change of the program, whether or not the broadcast of the program according to the original reservation information that has been extracted by the reservation information survey step has already begun A program start determination step, and a reservation change step for changing the processing by the initial reservation information extracted in the reservation information investigation step according to the determination result of the program start determination step for the initial reservation information , the reservation changing step, when the program according to the original reservation information the extracted is determined to have already begun in the program start determination step, reservation update to change the end time of the reservation of the person first opinions Judgments and steps, a program according to the extracted initial reservation information has not yet started in the program start determination step If it has, for processing by the contact with the first reservation information cancellation step of the cancellation of the first reservation information, initial reservation information canceled by the first reservation information cancellation step, in accordance with the schedule change of the program first performing a first new reservation information generating step of generating a first new reservation information changed, the first new reservation information of the reservation, to the function of the specified device or devices in the book of the new reservation step, the first new reservation success determining step of determining whether the reservation of the first new reservation step satisfied, before Symbol first new reservation success determining step, said first When it is determined that the reservation in the new reservation step has not been established, the device or device different from the device specified in the reservation of the first new reservation information or the device function And an alternative reservation step of executing an alternative reservation process of the first new reservation information for the function of the device .

In addition, the reservation changing method according to the present invention is a tuner system on an AV network to which a plurality of tuner devices and recording devices are connected. A reservation changing method for changing the initial reservation information for a function, wherein an SI information receiving step for receiving SI (Service Information) information, which is information of a broadcast program, and storing the received SI information in SI information SI information storing step stored in the means, SI information comparing step comparing SI information already stored in the SI information storing means and SI information newly received in the SI information receiving step, and the SI information comparison The newly received SI information in the step is stored in the SI information storage means. SI information changing step of changing the content of SI information by storing the newly received SI information in the SI information storage means when it is determined that it is not present, and the newly received SI information by the SI information comparison means A program information change notification step of determining that the program information of the broadcast program has been changed and notifying the fact of the schedule change of the broadcast program when it is determined that SI information does not exist in the SI information storage means; A program information change event receiving step for receiving an event for notifying that the schedule of the program to be broadcast has been changed in the program information changing step, and the function of each device or each device in response to the event reception The reservation information acquisition step for acquiring the initial reservation information for the first reservation information and the initial reservation information acquired in the reservation information acquisition step A reservation information investigation step for extracting initial reservation information that is affected by the schedule change of the program, and determining whether broadcasting of the program related to the initial reservation information extracted in the reservation information investigation step has already started A program start determination step, and a reservation change step for changing the processing based on the initial reservation information extracted by the reservation information investigation means according to the determination result of the program start determination step for the initial reservation information, In the reservation change step, if it is determined that the program related to the extracted initial reservation information has already started in the program start determination step, the reservation update step of changing the reservation end time of the initial reservation information And it is determined that the program related to the extracted initial reservation information has not yet started in the program start determination step. The first reservation information cancellation step for canceling the initial reservation information and the processing based on the initial reservation information canceled in the first reservation information cancellation step are changed in accordance with the schedule change of the program. A first new reservation information generating step for generating first new reservation information, and a first new reservation for performing reservation of the first new reservation information for a device or a function of the device designated by the reservation A first new reservation success / failure determination step for determining whether or not the reservation of the first new reservation step has been established; and the first new reservation success / failure determination step; If it is determined that the reservation has not been established, the reservation change step that causes the reservation to be changed based on the cause reservation information that caused the reservation not to be established. After the reservation change of the cause reservation information by executing the cause reservation change step, the first new reservation step is executed again to reserve the first new reservation information .

In addition, the reservation changing method according to the present invention is a tuner system on an AV network to which a plurality of tuner devices and recording devices are connected. A reservation changing method for changing the initial reservation information for a function, wherein an SI information receiving step for receiving SI (Service Information) information, which is information of a broadcast program, and storing the received SI information in SI information SI information storing step stored in the means, SI information comparing step comparing SI information already stored in the SI information storing means and SI information newly received in the SI information receiving step, and the SI information comparison The newly received SI information in the step is stored in the SI information storage means. SI information changing step of changing the content of SI information by storing the newly received SI information in the SI information storage means when it is determined that it is not present, and the newly received SI information by the SI information comparison means A program information change notification step of determining that the program information of the broadcast program has been changed and notifying the fact of the schedule change of the broadcast program when it is determined that SI information does not exist in the SI information storage means; A program information change event receiving step for receiving an event for notifying that the schedule of the program to be broadcast has been changed in the program information changing step, and the function of each device or each device in response to the event reception The reservation information acquisition step for acquiring the initial reservation information for the first reservation information and the initial reservation information acquired in the reservation information acquisition step A reservation information investigation step for extracting initial reservation information that is affected by the schedule change of the program, and determining whether broadcasting of the program related to the initial reservation information extracted in the reservation information investigation step has already started A program start determination step, and a reservation change step for changing the processing by the initial reservation information extracted in the reservation information investigation step according to the determination result of the program start determination step for the initial reservation information, In the reservation change step, if it is determined that the program related to the extracted initial reservation information has already started in the program start determination step, the reservation update step of changing the reservation end time of the initial reservation information It is determined that the program related to the extracted initial reservation information has not yet started in the program start determination step. If so, the first reservation information cancellation step for canceling the initial reservation information and the processing based on the initial reservation information canceled in the first reservation information cancellation step are changed in accordance with the schedule change of the program. A first new reservation information generation step for generating the first new reservation information, and a first new reservation for performing the reservation of the first new reservation information for the device or the function of the device designated by the reservation. The reservation step, the reservation update success / failure determination step for determining whether or not the reservation update in the reservation update step has been established, and the reservation update success / failure determination step have determined that the reservation update in the reservation update step has not been established. And a cause reservation change step for changing the reservation based on the cause reservation information which is the cause of the failure of the reservation update. After the reservation change of the cause reservation information by execution of the cause reservation change step, the initial reservation information extracted by the reservation information investigation step is updated to information whose end time has been changed by the reservation update step. To do.

  Each step in the reservation changing method according to any one of the above is performed using a software element of a HAVi standard which is a standard in a network environment of an AV device.

  The present invention also relates to a program for causing a computer to execute any one of the reservation changing methods, and further relates to a computer-readable recording medium on which the program is recorded.

  According to the present invention, when the schedule of a program to be broadcast is changed by updating SI information received via broadcasting or the Internet, the program information change can be notified to other systems. The reservation affected by the change can be changed in accordance with the program schedule change.

  The present invention automatically records the extended program or the program whose broadcast schedule has been changed correctly to the end even when the reserved program is extended or the broadcast schedule is changed due to an emergency broadcast or the like. Or it is for enabling recording reservation or viewing reservation. In addition, the present invention not only enables the program to be recorded correctly or can be reserved for recording or viewing, but also automatically reserves other reservation information that is reserved for recording or viewing without conflict. It is intended to be able to make changes.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram showing an example of connection of AV devices for explaining an embodiment of the present invention, and shows a common system configuration in all the following embodiments. In the figure, reference numeral 8001 denotes a BS digital broadcast tuner and a device equipped with a DVD-RW function. The device 8001 is connected to a BS digital parabolic antenna 8006 via a cable 8008 and a display 8005 via a cable 8007. The A device 8002 is equipped with a CS digital broadcast tuner and an HDD function. The device 8002 is connected to a CS digital broadcast parabolic antenna 8010 via a cable 8008. Reference numeral 8003 denotes a device having D-VHS and HDD functions, and 8004 denotes a device in which a tuner and a display capable of receiving both BS digital broadcasting and CS digital broadcasting are integrated. The device 8004 is connected to a BS / CS combined parabolic antenna 8011 via a cable 8008. In FIG. 1, a device 8001, a device 8002, a device 8003, and a device 8004 are daisy chained by using an IEEE1394 cable 8009. That is, the device 8001, the device 8002, the device 8003, and the device 8004 are connected via the IEEE1394 cable 8009. Further, it is assumed that the device 8001 and the device 8004 in this example are equipped with FAVs of the HAVi system, and the devices 8002 and 8003 are equipped with HAVi BAVs.

  The following embodiments will be described based on the AV device network shown in FIG. 1, but the configuration of the AV device to which the present invention is applied is not limited to this.

  FIG. 2 is a block diagram showing a hardware configuration of a program information change notification and reservation change device 0007 according to the following embodiment of the present invention. The program information change notification and reservation change device 0007 may be incorporated in an existing digital AV device. FIG. 4 shows an example incorporated in a tuner system. The configuration of functional blocks (0001 to 0005) will be described later in each embodiment.

2, the program information change notification and reservation change device 0007 includes, for example, an IO controller 6008, a flash ROM 6009, a CPU 6010, a RAM 6011, an Ethernet (registered trademark) controller 6014, and a 1394 controller 6015. The IO controller 6008, the flash ROM 6009, the CPU 6010, and the RAM 6011 are connected via a bus 6019. The IO controller 6008 executes switching control of the Ethernet (registered trademark) controller 6014 and the 1394 controller 6015 in order to select either data transmitted via the LAN cable or data transmitted via the 1394 cable. To do. The CPU 6010 reads a control program (for example, a program based on the flowcharts of FIGS. 6, 8, 10, 12, 13, and 14) stored in the flash ROM 6009, and uses the RAM 6011 as a work area for the control program. Then, processing according to the control program is executed. Note that the flash ROM 6009 is a kind of nonvolatile ROM memory, and is suitable for increasing the capacity. The flash ROM 6009 is not only used in the same way as the EEPROM 6016 (see FIG. 3) for storing the BIOS of the computer system and the control program of the electronic device, but also large. Utilizing the feature of capacity, it can also be used for disk-like data storage.

  FIG. 3 is a block diagram of a program information change notification and reservation change device 0008 having another hardware configuration. 2 differs from FIG. 2 in that an EEPROM 6016 is used instead of the flash ROM 6009, and a hard disk drive HDD 6018 and a disk controller 6017 are further provided. The other configurations are the same as those in FIG. As shown in FIG. 3, data is input from a hard disk in addition to Ethernet and 1394.

  FIG. 4 is a block diagram showing a hardware configuration of the tuner system 0006 when the program information change notification and reservation change device 0007 of FIG. 2 is incorporated in the tuner system. Since the configuration of the tuner system is general, the description of 6001 to 6007 is omitted. By incorporating the above-described program information change notification and reservation change device 0007 (FIG. 2) into the tuner system 0006 of FIG. 4, the tuner system receives and decodes the broadcast data and displays the data for display on the display. It functions not only as a system to generate, but also as a system having a program information change notification function and a reservation change function, which will be described in detail later.

<First Embodiment>
FIG. 5 is a functional block diagram showing a configuration example of the program information change notification function according to the present invention.
In FIG. 5, reference numeral 0001 denotes a program information change notification function. When information on a program broadcast on the broadcasting system is transmitted from digital broadcasting or Internet broadcasting, the received program information is previously received. If the change is made, this is a device for notifying that the program information has been changed.

  The program information change notification function 0001 includes SI information receiving means 1001, SI information comparing means 1002, SI information storing means 1003, program information change notifying means 1004, and SI information database 1005.

  Next, an outline of the operation of this apparatus will be described. The SI information receiving unit 1001 acquires SI information from information broadcast from a broadcasting station such as digital broadcasting or Internet broadcasting, or acquires SI information from a WEB page that publishes an EPG on the Internet. Next, the acquired SI information is compared with the SI information stored in the SI information database 1005. Next, when SI information not yet in the database is acquired by the SI information storage unit 1003, the acquired SI information is stored in the SI information database 1005. If the SI information stored in the database is updated and the SI information acquired by the SI information receiving unit 1001 is new, the SI information stored in the SI information database 1005 is updated. Next, when the data acquired by the SI information acquisition unit 1001 is for updating the SI information stored in the SI information database 1005, the program information change notification unit 1004 indicates that the program information has been changed. Notify other devices. Here, the fact that SI information is updated means that the broadcast schedule of the program is changed when the program is extended or when the content of the program is changed by an emergency broadcast or the like.

  As described above, when the SI information is received by the function shown in FIG. 5, when the information is updated and the program schedule is changed, it is possible to notify the other apparatus of the program information change.

  FIG. 6 is a flowchart for explaining an operation of notifying a change in program information according to the first embodiment of the present invention. FIG. 6 is a flowchart assuming a HAVi application.

In step S1001, initialization is performed. Specifically, MS opens (MsgOpen API call), event and callback function registration to EM (EventManager :: Register API call), own software element information to REG (Registry :: RegisterElement API) Call). In the event registration, an event (ReceiveSIInformation) for receiving SI information from the tuner system is registered. In addition, although ReceiveSIInformation is not defined in the HAVi standard, an event is an event transmitted when SI information is received. In step S1002, the SI information message transmitted by the tuner system is received. Here, the process waits until an SI information message is received. Specifically, the process waits until an EventManagerNotification API having ReceiveSIInformation as an event ID is called from the EM. When the SI information message is received, step S1003 is executed. In step S1003, SI information stored in the database is extracted. In step S1004, the stored SI information is compared with the received SI information. If new SI information is not received as a result of the comparison in step S1004, the process returns to step S1002. If new SI information is received as a result of the comparison in step S1004, step S1007 is executed. And have you to step S1007, to save the new SI information received in the database, and returns to step S1002. If it is determined in step S1004 that there is SI information that has been changed compared to the stored SI information, step S1005 is executed. In step S1005, the changed SI information is stored in the database, and step S1006 is executed. In step S1006, a program information change notification event is transmitted. An event is transmitted to the EM (EventManager :: PostEvent API is called). The ChangeEventSchedule as ID of the event, also the parameters, and transmits by adding SI information that has changed. Note that ChangeEventSchedule is not defined in the HAVi standard, but here, an event for notifying that program information has been changed is referred to as ChangeEventSchedule.

  Although FIG. 6 is a flowchart showing one independent application, it can be incorporated in the Tuner FCM.

  As described above, according to the flowchart shown in FIG. 6, when SI information is received, when the information is updated and the program schedule is changed, it is possible to notify the other system of the program information change.

  Note that FIG. 6 is a flowchart assuming a HAVi application, but the same can be realized in a system other than HAVi.

FIG. 7 is a functional block diagram showing a configuration example of the reservation change function according to the first embodiment of the present invention.
In FIG. 7, reference numeral 0002 denotes a reservation change function. When a program is extended or an emergency broadcast is made, and the program information is changed, the reservation affected by the change is changed, and the reservation is made correctly. It is a function that makes it appear. For example, when a certain sports program is reserved for recording, even if the sports program is extended, the sports program can be correctly recorded to the end.

  The reservation change function 0002 includes a program information change event reception unit 2001, a reservation information acquisition unit 2002, a reservation information investigation unit 2003, a first reservation cancellation unit 2004, a first reservation information generation unit 2005, a first function / device reservation. Means 2006 and reservation update means 2007.

  Next, an outline of the operation of this function will be described. The program information change event receiving unit 2001 receives a program information change event transmitted from the program information change notification device. Next, when a program information change notification event is received, reservation information is acquired from the database in which the reservation information is stored by the reservation information acquisition unit 2002. Next, reservation information that is affected by the change of the program information is extracted from the reservation information stored in the database by the reservation information checking means 2003. Also, the schedule of the program that has already started is changed, and it is checked whether or not the program is reserved. Next, if the changed program has not started yet, the first reservation canceling means 2004 cancels the reservation affected by the change of the program information. Next, the first reservation information generation means 2005 generates new reservation information in accordance with the change of the program information instead of the canceled reservation. Next, the first function / device reservation unit 2006 executes a function or device reservation from the generated reservation.

  On the other hand, if the program has already started, the reservation update unit 2007 corrects the start time of the procedure to be executed when the program ends to the new time when the program schedule is changed.

  Next, a specific example of reservation change will be described. Hereinafter, in a specific example of reservation change, it is assumed that the operation is performed in the AV network environment shown in FIG.

  FIG. 16 shows an EPG screen. Here, it is assumed that the recording reservation of the program indicated by 5001 is made. The recording reservation indicated by 5001 is assumed to be received by the BS tuner of the device 8001 in FIG. At this time, when the program 5002 before the reserved program 5001 is being broadcast, if the program is extended by 30 minutes and the start of the program 5001 is also delayed by 30 minutes as a result, the program information change event The receiving unit 2001 receives a program information change event notifying that 5001 and 5002 have been changed, the reservation information acquiring unit 2002 acquires reservation information stored in the apparatus, and the reservation information examining unit 2003 The affected reservation (in this case, the recording reservation of 5001) is extracted, and it is further confirmed that the program that makes the recording reservation has not yet started. Then, the first reservation canceling unit 2004 cancels the recording reservation 5001, and the first reservation information generating unit 2005 generates reservation information for newly recording 5001. Then, the recording reservation of 5001 is performed by the first function / device reservation means. In this case, the BS tuner of the device 8001 and the HDD of the device 8003 are reserved in accordance with the 5001 program.

  Next, another specific example is shown in FIG. FIG. 17 shows an EPG screen. Here, it is assumed that the recording reservation of the program indicated by 5011 is made. It is assumed that the program recording reservation indicated by 5011 is received by the BS tuner of the device 8001 shown in FIG. 1 and reserved for recording by the HDD of the device 8003. At this time, when the reserved program 5011 is being broadcast, when the program is extended by 30 minutes, the program information change event notifying that the program information change event receiving unit 2001 has changed 5011 , The reservation information acquisition unit 2002 acquires the reservation information stored in the apparatus, the reservation information investigation unit 2003 extracts the affected reservation (in this case, the recording reservation of 5011), and further sets the recording reservation. It is confirmed that the program being started has already started and recording has started. Then, the reservation update unit 2007 updates the reservation so as to extend the recording time by 30 minutes with respect to the recording reservation that has already started. In this case, the operation time for recording the program of the BS tuner of the device 8001 and the HDD of the device 8003 is extended by 30 minutes.

  As described above, when the program information change event is received by the function shown in FIG. 7, the reservation affected by the change of the program can be changed in accordance with the change of the program schedule.

  FIG. 8 is a flowchart for explaining the reservation changing operation according to the first embodiment of the present invention. FIG. 7 is a flowchart assuming a HAVi application.

  In step S2001, initialization is performed. Specifically, MS opens (MsgOpen API call), event and callback function registration to EM (EventManager :: Register API call), own software element information to REG (Registry :: RegisterElement API) Call). In the event registration, an event (ChangeEventSchedule) for receiving SI information from the tuner system is registered. Next, in step S2002, the REG is inquired of the REG (Registry :: GetElement API and Registry :: RetrieveElement API are called). In the AV network shown in FIG. 1, RMs exist in the device 8001 and the device 8004 that are FAVs.

Next, in step S2003, a program information change notification event transmitted by the program information change notification system is received. Here, the process waits until a program information change notification event is received. Specifically, the process waits until the EventManagerNotification API having ChangeEventSchedule as an event ID is called from the EM.
Next, in step S2004, the reservation information (Scheduled Action) held by the RM is retrieved from all RMs (ResourceManager :: GetLocalScheduledActions API and ResourceManager :: GetScheduledActionData API).

  Next, in step S2005, it is checked whether or not all reservations included in the program information change notification event that are affected by the program whose schedule has been changed have been corrected. In step S2005, when all the schedules are corrected (YES), the program is corrected. In step S2005, if there is still reservation information to be corrected (NO), step S2006 is executed.

  In step S2006, one affected reservation information is extracted. Next, in step S2007, it is checked whether the reserved program to be corrected has already started. If it is determined in step S2007 that the reserved program has already started (YES), step S2011 is executed next. If it is determined in step S2007 that the reserved program has not yet started (NO), step S2008 is executed next.

  In step S2011, the end time of the reservation in the RM is corrected in accordance with the end time of the reserved program (calling the ResourceManager :: ChangeScheduleAction API). Note that ResourceManager :: ChangeScheduledAction is not defined in the HAVi standard, but here ResourceManager :: ChangeScheduleAction is used to change the Scheduled Action for the target Scheduled Action that is currently being executed by Action. And Next, step S2005 is executed.

  In step S2008, the retrieved reservation information is cancelled (ResourceManager :: UncheduleAction API call). Next, in step S2009, reservation information in accordance with the change of the program schedule is generated. Next, in step S2010, the reservation information generated in the RM is registered (ResourceManager :: ScheduleAction API call). Next, step S2005 is executed.

  As described above, when the program information change notification event is received according to the flowchart shown in FIG. 8, even if the reservation information affected by the event is updated and the broadcast schedule of the program set when the reservation is made is changed, The reservation details can be automatically corrected accordingly.

  Note that FIG. 8 is a flowchart assuming a HAVi application, but the same can be realized in a system other than HAVi.

<Second Embodiment>
FIG. 9 is a functional block diagram showing an example of a reservation change function according to the second embodiment of the present invention.
In FIG. 9, reference numeral 0003 denotes a reservation change function. When a program is extended or an emergency broadcast is made, and the program information is changed, the reservation affected by the change is changed, and the reservation is made correctly. It is a function that makes it appear.

The reservation change function 0003 includes a program information change event reception unit 2001, a reservation information acquisition unit 2002, a reservation information investigation unit 2003, a first reservation cancellation unit 2004, a first reservation information generation unit 2005, and a first function / device reservation. It means 2006, reservation updating unit 2007, the first alternate function / device search unit 3001, the second reservation information generating unit 3002, and a second function / device reservation unit 3003.

  Next, an outline of the operation of this function will be described. However, those already described in FIG. 7 are omitted.

  In the first function / device reservation unit 2006, when a function or device reservation is executed from the generated reservation, if a conflict occurs and the reservation cannot be made, the first alternative function / device search unit 3001 The function / device that substitutes for the function / device to be reserved is searched. Next, the second reservation information generation means 3002 generates reservation information for making a reservation using the searched alternative function / device. Next, in the second function / device reservation unit 3003, a function or device reservation is executed from the generated reservation.

  Next, a specific example of reservation change will be described. Hereinafter, in a specific example of reservation change, it is assumed that the operation is performed in the AV network environment shown in FIG.

FIG. 18 shows an EPG screen. Here, it is assumed that a recording reservation is made for the program indicated by 5021 and the program indicated by 5022. It is assumed that the program recording reservation shown by 5021 is received by the BS tuner of the device 8001 shown in FIG. Also, it is assumed that the recording reservation of the program indicated by 5022 is reserved to be received by the CS tuner of the device 8004 and recorded by the HDD of the device 8003 shown in FIG. At this time, when the program 5023 before the reserved program 5022 is being broadcast, if the program is extended by 30 minutes and the start of the program 5022 is also delayed by 30 minutes, the program information change event The receiving unit 2001 receives a program information change event notifying that 5022 and 5023 have been changed, the reservation information acquiring unit 2002 acquires the reservation information stored in the apparatus, and the reservation information examining unit 2003 The affected reservation (in this case, 5022 recording reservation) is extracted, and it is further confirmed that the program to be reserved for recording has not yet started. Then, the first reservation cancellation unit 2004 cancels the recording reservation of the program indicated by 5022, and the first reservation information generation unit 2005 generates reservation information for newly recording 5022 programs. Then, the first function / device reservation unit 2006 makes a recording reservation for 5022 programs. In this case, the CS tuner 8004 and the HDD of the device 8003 are reserved in accordance with the program 5022.

  However, since the recording of the program 5021 has already been made in the HDD of the device 8003 and the time is overlapped, it is not possible to record the 5022 program that has been moved back 30 minutes.

  Therefore, the first substitute function / device search means 3001 searches for the substitute function of the HDD of the function 8003 causing the conflict. Then, the HDD of the device 8002 is found. Next, the second reservation information generating means 3002 generates reservation information for newly recording a program 5022 for recording. Specifically, reservation information that is received by the CS tuner of the device 8004 and recorded by the HDD of the device 8002 is generated. Then, the second function / device reservation unit 3003 makes a reservation based on the generated reservation information.

  As described above, when the program information change event is received by the apparatus shown in FIG. 9, the reservation affected by the change of the program can be changed in accordance with the schedule change of the program. If the reservation changed in accordance with the program schedule change conflicts with other reservations that have already been reserved and cannot be reserved, another alternative function / device is searched and the alternative function / device is searched. Reservation information can be generated using and can be reserved. In order to search for alternative functions / devices, it is necessary to generate a list for each function / device in the AV network, but since it is described in Patent Document 1, description thereof is omitted here.

  FIG. 10 is a flowchart for explaining a reservation change operation according to the second embodiment of the present invention. FIG. 10 is a flowchart assuming a HAVi application. In this flowchart, when the reservation is not successful, a function / device that replaces the function / device used in the reservation is searched for and the reservation is executed using the function / device. To do. In the following description, the steps already described with reference to FIG. 8 are the same, and are omitted here.

  In step S3001, it is checked whether the reservation end time correction executed in step S2011 is successful. If successful (YES), step S2005 is executed next. If it fails (NO), it is assumed that the reservation cannot be changed, and the process ends as an error.

  In step S3002, it is checked whether the reservation executed in step S2010 is successful. If successful (YES), step S2005 is executed next. If unsuccessful, next step S3003 is executed.

  In step S3003, it is checked whether or not the function / device substituting the function / device to be used in the reservation information generated in step S2010 has already been searched. If it has already been searched (YES), step S3005 is executed. If it has not been searched yet (NO), step S3004 is executed.

  In step S3004, an alternative function / device search (Registry :: GetElement API or Registry :: MultipleElementElement API and Registry :: RetrieveElement API is called) is executed in the REG to create a list of alternative functions / devices. If an alternative function / device cannot be found only by Attribute defined in the REG, the alternative function / device candidate is searched for in the REG, and thereafter, the function is directly inquired of the DCm / FCM.

  Next, in step S3005, it is checked whether reservation has been attempted for all the alternative functions / devices that have been searched. If reservation is attempted for all the alternative functions / devices (YES), it is assumed that the reservation cannot be changed, and the process ends as an error. If reservation of all cases has not been attempted yet (NO), step S3006 is executed next.

  In step S3006, one alternative function / device is extracted from the list of alternative functions / devices, and new reservation information is generated. Next, in step S3007, a reservation is attempted using the generated reservation information (ResourceManager :: ScheduleAction API call). Next, step S3002 is executed.

  As described above, when the program information change notification event is received according to the flowchart shown in FIG. 10, even if the reservation information affected by the event is updated and the broadcast schedule of the program set when the reservation is made is changed, The reservation details can be automatically corrected accordingly. In addition, if a reservation that is affected by a change in the broadcast schedule of a program has not yet started, even if the reservation change fails, a function / device that replaces the function / device used in the reservation is searched. And make a reservation using the found function / device. As a result, it is possible to avoid a conflict due to the simultaneous use of functions / devices that may occur due to a reservation change.

  Note that FIG. 10 is a flowchart assuming a HAVi application, but the same can be realized in a system other than HAVi.

<Third Embodiment>
FIG. 11 is a functional block diagram showing a configuration example of the reservation change function according to the third embodiment of the present invention.
In FIG. 11, reference numeral 0004 denotes a reservation change function. When a program is extended or an emergency broadcast is made and the program information is changed, the affected reservation is changed so that the reservation is correctly performed. It is a function that makes it appear.

  The reservation change function 0004 includes a program information change event reception unit 2001, a reservation information acquisition unit 2002, a reservation information investigation unit 2003, a first reservation cancellation unit 2004, a first reservation information generation unit 2005, and a first function / device reservation. Means 2006, reservation update means 2007, failure cause identification means 4001, second alternative function / device search means 4002, second reservation cancellation means 4003, third reservation information generation means 4004, third function / device reservation means 4005. Since the first function / device reservation unit 2006 and the reservation update unit 2007 are used again in the last step, the first function / device reservation unit 2006 and the reservation update unit 2007 are described twice in FIG. Has been.

  Next, an outline of the operation of this function will be described. However, those already described in FIG. 7 are omitted.

  When the function / device reservation is executed from the generated reservation in the first function / device reservation unit 2006, when a conflict occurs and the reservation cannot be made, or when the program is ended in the reservation update unit 2007 When the start time of the procedure to be executed is corrected to a new time when the program schedule is changed, and the reservation cannot be made due to a conflict, the failure cause identifying unit 4001 Compare the reservation information already acquired by the reservation information acquisition means 2002, identify the cause of the reservation failure, extract the reservation information that caused the failure (which caused the conflict), and cause the conflict The function / device is specified by the reservation information. Next, the second alternative function / device search unit 4002 searches for a function / device that replaces the function / device extracted in 4001. Next, the second reservation canceling means 4003 cancels the reservation that caused the conflict. Next, in the third reservation information generation unit 4004, a reservation that is used as a substitute for the reservation canceled by the second reservation cancellation unit 4003 using the function / device searched by the second replacement function / device search unit 4002 Generate information. Next, the third function / device reservation unit 4005 makes a function / device reservation based on the reservation information generated by the third reservation information generation unit 4004. Finally, if the changed program has not started yet, the first function / device reservation unit 2006 executes the reservation of the function or device that failed to be reserved in the first try. If the program has already started, the reservation update unit 2007 corrects the start time of the procedure to be executed when the program ends to the new time when the program schedule is changed.

  Next, a specific example of reservation change will be described. Hereinafter, in a specific example of reservation change, it is assumed that the operation is performed in the AV network environment shown in FIG.

FIG. 18 shows the same EPG screen as that shown in the second embodiment, but it is also used in the third embodiment. Here, it is assumed that a recording reservation is made for the program indicated by 5021 and the program indicated by 5022. It is assumed that the program recording reservation shown by 5021 is received by the BS tuner of the device 8001 shown in FIG. Also, it is assumed that the recording reservation of the program indicated by 5022 is reserved to be received by the CS tuner of the device 8004 and recorded by the HDD of the device 8003 shown in FIG. At this time, when the program 5023 before the reserved program 5022 is being broadcast, if the program is extended by 30 minutes and the start of the program 5022 is also delayed by 30 minutes, the program information change event Receiving means 2001 receives a program information change event notifying that 5022 and 5023 have been changed, reservation information acquisition means 2002 acquires reservation information stored in the apparatus, and program information investigation means 2003 The affected reservation (in this case, 5022 recording reservation) is extracted, and it is further confirmed that the program to be reserved for recording has not yet started. Then, the first reservation canceling unit 2004 cancels the recording reservation of the program indicated by 5022, and the first reservation information generating unit 2005 generates reservation information for newly recording the program indicated by 5022. Then, the first function / device reservation unit 2006 makes a recording reservation for the program indicated by 5022. In this case, the CS tuner 8004 and the HDD of the device 8003 are reserved in accordance with the program 5022. However, since the recording of the program 5021 has already been reserved in the HDD of the device 8003 and the time overlaps, it is not possible to record the program indicated by 5022 which has been moved back 30 minutes.

Therefore, the failure cause identification unit 4001 compares the failed reservation information with the reservation information already acquired by the reservation information acquisition unit 2002, identifies the cause of the reservation failure, and causes the failure (the cause of the conflict The reservation information is taken out, and the function / device is specified by the reservation information that caused the conflict. In this case, it is confirmed that the recording reservation of the program 5021 is a reservation that caused a conflict, and the function / device that caused the reservation is the HDD of the device 8003 that is a device for recording the program. Next, the second alternative function / device search unit 4002 searches for an alternative function / device of the function / device that caused the conflict. In this case, the HDD of the device 8002 is searched. Next, the second reservation canceling means 4003 cancels the reservation specified by the failure cause specifying means 4001 (in this case, the recording reservation for the program 5021). Next, the third reservation information generating means 4004 generates reservation information for newly making a recording reservation for the program 5021 using an alternative function / device. Next, the third function / device reservation unit 4005 reserves a function / device from the generated reservation information. In this case, the program 5021, received with the B S tuner device 800 1, the reservation for recording by using the HDD device 8002. Finally, the first function / device reservation unit 2006 makes a recording reservation for the program 5022. Specifically received with C S tuner device 800 4, the reservation for recording by using the HDD device 8003.

  Next, FIG. 19 is given as an example of another EPG screen. Here, it is assumed that a recording reservation is made for the program indicated by 5031 and the program indicated by 5032. It is assumed that the program recording reservation 5031 is reserved to be received by the BS tuner of the device 8001 and to be recorded by the HDD of the device 8003 shown in FIG. Further, it is assumed that the recording reservation of the program indicated by 5032 is reserved to be received by the BS tuner of the device 8001 and recorded by the HDD of the device 8003 shown in FIG. At this time, when the reserved program 5031 is being broadcast, if the program is extended by 30 minutes, the program information change event notifying that the program information change event receiving unit 2001 has changed 5031 , The reservation information acquisition unit 2002 acquires the reservation information stored in the apparatus, the program information investigation unit 2003 extracts the affected reservation (in this case, 5031 recording reservation), and further sets the recording reservation. It is confirmed that the program being started has already started and recording has started. Then, the reservation update unit 2007 updates the reservation so as to extend the recording time by 30 minutes with respect to the recording reservation that has already started. In this case, the operation time for recording the program of the BS tuner of the device 8001 and the HDD of the device 8003 is extended by 30 minutes. However, since the BS 50 of the device 8001 and the HDD of the device 8003 have already been reserved for recording the program 5032 and the time overlaps, 5031 that has been moved back 30 minutes cannot be recorded.

  Therefore, the failure cause identification unit 4001 compares the failed reservation information with the reservation information already acquired by the reservation information acquisition unit 2002, identifies the cause of the reservation failure, and causes the failure (the cause of the conflict The reservation information is taken out, and the function / device is specified by the reservation information that caused the conflict. In this case, the recording reservation of the program 5032 is a reservation that caused a conflict, and the function / device that caused the reservation is a BS tuner of the device 8001 that is a device that receives the program and a device that records the program. A certain device 8003 HDD is confirmed. Next, the second alternative function / device search unit 4002 searches for an alternative function / device of the function / device that caused the conflict. In this case, the BS tuner of the device 8004 and the HDD of the device 8002 are searched. Next, the second reservation canceling means 8003 cancels the reservation specified by the failure cause specifying means 4001, in this case, the recording reservation of the program 5032. Next, the third reservation information generation means 4004 generates reservation information for newly making a recording reservation for the program 5032 using an alternative function / device. Next, the third function / device reservation unit 4005 reserves a function / device from the generated reservation information. In this case, the program 5032 is received using the BS tuner of the device 8004, and a reservation is made for recording using the HDD of the device 8002. Finally, the reservation update unit 2007 updates the reservation so as to extend the recording time of the program 5031 by 30 minutes. Specifically, the reception time of the B tuner of the device 8001 and the recording time of the HDD of the device 8003 are each extended by 30 minutes.

  Here, the difference between the reservation update function 0003 shown in FIG. 9 and the reservation update function 0004 shown in FIG. 11 is that the function 0003 of FIG. 9 uses a reservation attempt when a reservation conflict occurs. In the reservation update function 0005 shown in FIG. 11, when a reservation conflict occurs, a search is performed for a function / device alternative function / device used in the reservation of A reservation that causes a conflict is identified, a function / device alternative function / device used in the reservation is searched, and a new reservation is made.

  As described above, when the program information change event is received by the function shown in FIG. 11, the reservation affected by the change of the program can be changed according to the schedule change of the program. In addition, if the reservation changed in accordance with the program schedule change conflicts with other reservations that have already been reserved and cannot be reserved, the function / device used in the reservation that caused the conflict It is possible to search for a function / device substituting for, generate reservation information using the alternative function / device, and make a reservation. In order to search for alternative functions / devices, it is necessary to generate a list for each function / device in the AV network, but since it is described in Patent Document 1, description thereof is omitted here.

  FIG. 12 is a flowchart for explaining a reservation changing operation according to the third embodiment of the present invention. FIG. 12 is a flowchart assuming a HAVi application. In this flowchart, in contrast to FIG. 8, when a reservation is not successful, by making the reservation, the reservation that caused the conflict is searched, and the function / device used in the conflicting reservation is determined. Searching for an alternative function / device and using the function / device to correct the reservation that caused the conflict. In the following description, the steps already described with reference to FIG. 8 are the same, and are omitted here.

  In step S4001, it is checked whether the execution in step S2010 or step S2011 is successful. If successful (YES), step S2005 is executed next. If unsuccessful (NO), step S4002 is executed next.

  In step S4002, a function / device that replaces the conflicting reservation is searched, and it is checked whether the reservation is attempted. If a reservation has already been attempted (YES), it is assumed that the reservation could not be made, and the process ends as an error. If reservation has not been attempted yet (NO), step S4003 is executed next.

  In step S4003, the reservation information that causes the original reservation to be unsuccessful is found, and the function / device with which the reservation overlaps is found from the reservation information. Specifically, the reservation information (Scheduled Action) describes the execution start time and end time of the Action, the function / device required for the execution, and the command to be sent to the function / device. In addition, it is possible to search for functions / devices with overlapping reservations.

  Next, in step S4004, it is checked whether a function / device with overlapping reservations has been found. If not found (NO), it is assumed that the reservation could not be made and the process ends as an error. If found (YES), next, Step S4005 is executed.

In step S4005, the reservation information found in step S4003 is canceled (ResourceManager :: UnchedActionActionAPI call). In step S4006, function / device to perform a search of alternative functions / devices found in step S4003 (and Registry :: GetElementAPI or Registry :: MultipleGet El ement API, call the Registry :: RetrieveElement API), an alternative Create a list of features / devices. If an alternative function / device cannot be found only by Attribute defined in the REG, a candidate for the alternative function / device is searched for in the REG, and then a function inquiry is directly made to the DCM or FCM.

  Next, in step S4007, it is checked whether a reservation using all the alternative functions / devices has been attempted. If all reservations have been attempted (YES), next step S4012 is executed. If all reservations have not been attempted (NO), step S4008 is executed next.

  In step S4012, the reservation once canceled in step S4005 is reserved again. Then, it is assumed that the original reservation could not be performed, and the process ends as an error.

  In step S4008, one is extracted from the list of functions / devices to be replaced generated in step S4006, and reservation information is generated using the replacement functions / devices. In step S4009, an attempt is made to reserve the generated reservation information (ResourceManager :: ScheduleAction API call). In step S4010, it is checked whether the reservation is successful. If the reservation is successful (YES), step S4011 is executed next. If the reservation is not successful (NO), step S4007 is executed next.

  In step S4011, it is checked whether or not the program has already started for the reservation originally intended to be corrected. If it has started (YES), then step 2011 is executed. If it has not started yet (NO), step S2010 is executed next.

  As described above, according to the flowchart shown in FIG. 12, when the program information change notification event is received, the reservation information affected thereby is updated, and even if the broadcast schedule of the program set when the reservation is made is changed, The reservation details can be automatically corrected accordingly. Even if the reservation change fails, the reservation that caused the reservation failure is searched, the function / device that replaces the function / device used there is searched, and the found function / device is found. Use it to make a reservation and then modify the original reservation. As a result, it is possible to avoid a conflict due to the simultaneous use of functions / devices that may occur due to a reservation change.

  Note that FIG. 12 is a flowchart assuming a HAVi application, but the same can be realized in a system other than HAVi.

<Fourth Embodiment>
FIG. 13 is a functional block diagram showing an example of the configuration of the reservation changing function according to the fourth embodiment of the present invention.
In FIG. 13, reference numeral 0005 denotes a reservation change function. When a program is extended or an emergency broadcast is made, and the program information is changed, the reservation affected by the change is changed, and the reservation is made correctly. It is a function that makes it appear.

  The reservation change function 0005 includes a program information change event reception unit 2001, a reservation information acquisition unit 2002, a reservation information investigation unit 2003, a first reservation cancellation unit 2004, a first reservation information generation unit 2005, and a first function / device reservation. Means 2006, reservation update means 2007, first alternative function / device search means 3001, second reservation information generation means 3002, second function / device reservation means 3003, failure cause identification means 4001, second alternative function / It comprises a device search means 4002, a second reservation cancellation means 4003, a third reservation information generation means 4004, and a third function / device reservation means 4005. Since the first function / device reservation unit 2006 and the reservation update unit 2007 are used again in the last step, the first function / device reservation unit 2006 and the reservation update unit 2007 are described twice in FIG. Has been. That is, the reservation change function shown in FIG. 13 is a hybrid type of the reservation change function 0003 shown in FIG. 9 and the reservation change function 0004 shown in FIG.

  Next, an outline of the operation of this function will be described. However, those already described in FIGS. 7, 9, and 11 are omitted.

  When the function / device reservation is executed from the generated reservation in the second function / device reservation unit 3003, when a conflict occurs and the reservation cannot be made, or when the program is ended in the reservation update unit 2007 When the start time of the procedure to be executed is corrected to a new time when the program schedule is changed, and the reservation cannot be made due to a conflict, the failure cause identifying unit 4001 Compare the reservation information already acquired by the reservation information acquisition means 2002, identify the cause of the reservation failure, extract the reservation information that caused the failure (which caused the conflict), and cause the conflict The function / device is specified by the reservation information. The following is equivalent to the content described with reference to FIG.

  Next, a specific example of reservation change will be described. Hereinafter, in a specific example of reservation change, it is assumed that the operation is performed in the AV network environment shown in FIG.

FIG. 20 shows an EPG screen. Here, it is assumed that a recording reservation is made for the program indicated by 5041, the program indicated by 5042, and the program indicated by 5043. It is assumed that the recording reservation of the program indicated by 5041 is received by the BS tuner of the device 8001 and recorded by the DVD-RW of the device 8001 shown in FIG. Further, it is assumed that the program recording reservation indicated by 5042 is received by the BS tuner of the device 8004 and recorded by the HDD of the device 8003 shown in FIG. Further, it is assumed that the recording reservation of the program indicated by 5043 is received by the CS tuner of the device 8004 and reserved by the HDD of the device 8003 as shown in FIG. At this time, when the program 5044 before the reserved program 5042 is being broadcast, if the program is extended by 30 minutes and the start of the program 5042 is also moved back by 30 minutes, the program information change event The receiving unit 2001 receives a program information change event notifying that 5042 and 5044 have been changed, the reservation information acquiring unit 2002 acquires the reservation information stored in the apparatus, and the program information examining unit 2003 The affected reservation (in this case, 5042 recording reservation) is extracted, and it is further confirmed that the program to be reserved for recording has not yet started. Then, the recording reservation of the program 5042 is canceled by the first reservation canceling means 2004, and reservation information for newly recording the program indicated by 5042 is generated by the first reservation information generating means 2005. Then, the first function / device reservation unit 2006 makes a recording reservation for the program indicated by 5042. In this case, the BS tuner 8004 and the HDD of the device 8003 are reserved in accordance with the 5042 program. However, since the BS tuner of the device 8004 and the HDD of the device 8003 are already used for recording reservation of the program 5043 and time is overlapped, it is not possible to make a recording reservation for the program indicated by 5042 which is 30 minutes later. Here, it is assumed that only one of the BS / CS tuners of the device 8004 can be used at the same time.

  Therefore, the first substitute function / device search means 3001 searches for the substitute function of the BS tuner of the function 8004 and the HDD of 8003 that caused the conflict. Then, the BS tuner of the device 8001 and the HDD of the device 8002 are found. Next, the second reservation information generating unit 3002 generates reservation information for newly recording a program 5042 for recording. Specifically, reservation information that is received by the BS tuner of the device 8001 and recorded by the HDD of the device 8002 is generated. Then, the second function / device reservation unit 3003 makes a reservation based on the generated reservation information. However, the BS digital tuner of the device 8001 is already used to record 5041 programs, and a conflict occurs and the reservation is not established.

  Therefore, the failure cause identification unit 4001 compares the failed reservation information with the reservation information already acquired by the reservation information acquisition unit 2002, identifies the cause of the reservation failure, and causes the failure (the cause of the conflict The reservation information is taken out, and the function / device is specified by the reservation information that caused the conflict. In this case, the recording reservation of the program 5043 is the reservation that caused the conflict, and the function / device that caused the reservation is the CS tuner of the device 8004 and the HDD of the device 8003, which are the devices that receive the program. That is confirmed. Next, the second alternative function / device search unit 4002 searches for an alternative function / device of the function / device that caused the conflict. In this case, the CS tuner of the device 8002 and the HDD of 8002 are searched. Next, the second reservation canceling means 8003 cancels the reservation specified by the failure cause specifying means 4001 (in this case, the recording reservation for the program 5043). Next, the third reservation information generation unit 4004 generates reservation information for making a new recording reservation for the program 5043 using an alternative function / device. Next, the third function / device reservation unit 4005 reserves a function / device from the generated reservation information. In this case, the program 5043 is received using the CS tuner of the device 8002 and reserved for recording using the HDD of the device 8002. Finally, the first function / device reservation unit 2006 makes a recording reservation for the program 5042. Specifically, reception is performed using the BS tuner of the device 8004, and reservation is made for recording using the HDD of the device 8003.

  As described above, when the program information change event is received by the function shown in FIG. 13, the reservation affected by the change of the program can be changed in accordance with the change of the program schedule. In addition, if the reservation changed in accordance with the program schedule change conflicts with other reservations that have already been reserved and cannot be reserved, the function / device used in the reservation that caused the conflict It is possible to search for a function / device substituting for, generate reservation information using the alternative function / device, and make a reservation. In order to search for alternative functions / devices, it is necessary to generate a list for each function / device in the AV network, but since it is described in Patent Document 1, description thereof is omitted here.

  14 and 15 are flowcharts for explaining a reservation changing operation according to the fourth embodiment of the present invention. 14 and 15 are flowcharts assuming a HAVi application. In this flowchart, when the reservation cannot be corrected due to the change of the program schedule shown in FIG. 10, a method of searching for an alternative function / device and attempting the reservation and the conflict shown in FIG. 12 are caused. Find the reservation that caused it, search for the function / device that replaces the function / device used in the conflicting reservation, and correct the reservation that caused the conflict using that function / device. It is a mix of how to do. In the following description, the steps already described with reference to FIGS. 8, 10, and 12 are the same, and are omitted here.

  In step S3001, it is checked whether the reservation end time correction executed in step S2011 is successful. If successful (YES), step S2005 is executed next. If unsuccessful (NO), step S4002 is executed next.

  In step S3005, it is checked whether reservation has been attempted for all the alternative functions / devices that have been searched. If reservation has been attempted for all alternative functions / devices (YES), step S4002 is executed next. If reservation of all cases has not been attempted yet (NO), step S3006 is executed next.

  14 and 15, when the program information change notification event is received, the reservation information affected by the event is updated, and the broadcast schedule of the program set when the reservation is made is changed. However, it is possible to automatically correct the reservation contents accordingly. In addition, if a reservation that is affected by a change in the broadcast schedule of a program has not yet started, even if the reservation change fails, a function / device that replaces the function / device used in the reservation is searched. And make a reservation using the found function / device. Furthermore, even if the reservation change fails, the reservation that caused the reservation failure is searched, the function / device that replaces the function / device used in the reservation is searched, and the found function / device is found. Use it to make a reservation and then modify the original reservation. As a result, it is possible to avoid a conflict due to the simultaneous use of functions / devices that may occur due to a reservation change.

  14 and 15 are flowcharts assuming a HAVi application, but the present invention can be similarly realized in a system other than HAVi.

  As mentioned above, although each embodiment has been described centering on each function in the program information change notification device and reservation change device of the present invention, the present invention is a program information change notification method as described also as a method to be executed by a computer, It can also take the form of a reservation change method. Further, similarly to the program information change notification device and reservation change device having these functions, a program information change notification method and reservation change method for causing a computer to function as a program information change notification device and reservation change device are provided. A form as a program to be executed is also possible.

  An embodiment of a recording medium storing a program and data for realizing each function according to the present invention will be described. Specific examples of the recording medium include a CD-ROM (-R / -RW), a magneto-optical disk, DVD-ROM (-RW), FD, flash memory, memory card, memory stick, and various other ROMs and RAMs can be assumed. By making a computer execute the functions of the above-described embodiments of the present invention on these recording media and recording and distributing a program for realizing each function, the functions can be easily realized. Then, the recording medium as described above is mounted on an information processing apparatus such as a computer and the program is read by the information processing apparatus, or the program is stored in a storage medium provided in the information processing apparatus. By reading, each function related to the present invention can be executed.

  As described above, the present invention can be used as a reservation management apparatus for AV equipment and information equipment, and produces the following technical effects.

  In other words, according to the present invention, when SI information is received through broadcasting, the Internet, etc., when the schedule of a program to be broadcast is updated and the information is updated, notification of program information change is sent to other systems. It can be carried out.

  Further, when a program information change event is received, the reservation that is affected by the change of the program can be changed in accordance with the program schedule change.

  Furthermore, when a program information change event is received, the reservation affected by the change of the program can be changed in accordance with the program schedule change. If the reservation changed in accordance with the program schedule change conflicts with other reservations that have already been reserved and cannot be reserved, another alternative function / device is searched and the alternative function / device is searched. Reservation information can be generated using and can be reserved.

  Further, when a program information change event is received, the reservation that is affected by the change of the program can be changed in accordance with the program schedule change. In addition, if the reservation changed in accordance with the program schedule change conflicts with other reservations that have already been reserved and cannot be reserved, the function / device used in the reservation that caused the conflict It is possible to search for a function / device substituting for, generate reservation information using the alternative function / device, and make a reservation.

It is a figure which shows the example of a connection of AV device for describing embodiment of this invention. It is a block diagram which shows the hardware constitutions of the program information change notification and reservation change apparatus by embodiment of this invention. It is a block diagram which shows another hardware constitutions of the program information change notification and reservation change apparatus by embodiment of this invention. It is a block diagram which shows the hardware constitutions at the time of incorporating the program information change notification and reservation change apparatus of FIG. 2 in a tuner system. It is the functional block diagram which showed the program information change notification function by 1st Embodiment. It is a flowchart for demonstrating operation | movement of the program information change notification function by 1st Embodiment. It is the functional block diagram which showed the reservation change function by the 1st Embodiment of this invention. It is a flowchart for demonstrating the reservation change operation | movement by the 1st Embodiment of this invention. It is the functional block diagram which showed the reservation change function by the 2nd Embodiment of this invention. It is a flowchart for demonstrating the reservation change operation | movement by the 2nd Embodiment of this invention. It is the functional block diagram which showed the reservation change function by the 3rd Embodiment of this invention. It is a flowchart for demonstrating the reservation change operation | movement by the 3rd Embodiment of this invention. It is the functional block diagram which showed the reservation change function by the 4th Embodiment of this invention. It is a flowchart (the first half) for demonstrating the reservation change operation | movement by the 4th Embodiment of this invention. It is a flowchart (latter half) for demonstrating the reservation change operation | movement by the 3rd Embodiment of this invention. It is a figure which shows the EPG screen for demonstrating the 1st Embodiment of this invention. It is a figure which shows another EPG screen for demonstrating the 1st Embodiment of this invention. It is a figure which shows the EPG screen for demonstrating the 2nd and 3rd embodiment of this invention. It is a figure which shows another EPG screen for demonstrating the 3rd Embodiment of this invention. It is a figure which shows the EPG screen for demonstrating the 4th Embodiment of this invention. It is a figure which shows the example of a connection of the conventional AV device. It is a figure which shows the software structural example of HAVi.

Explanation of symbols

0001 ... Program information change notification function, 0002-0005 ... Reservation change function, 0006 ... Hardware configuration example of tuner system, 0007 ... Hardware configuration example of 0001-0005, Another hardware configuration example of 0008: 0001-0005, 1001 ... SI information receiving means, 1002 ... SI information comparing means, 1003 ... SI information storing means, 1004 ... Program information change notifying means, 1005 ... SI information database, 2001 ... Program information change event receiving means, 2002 ... Reservation information obtaining means , 2003 ... reservation information investigation means, 2004 ... first reservation cancellation means, 2005 ... first reservation information generation means, 2006 ... first function / device reservation means, 2007 ... reservation update means, 3001 ... first alternative Function / device search means, 3002 ... second reservation information generation , 3003 ... second function / device reservation means, 4001 ... failure cause identification means, 4002 ... second alternative function / device search means, 4003 ... second reservation cancellation means, 4004 ... third reservation information generation means , 4005 ... third function / device reservation means, 5001 to 5043 ... program to be broadcast, 6001 ... tuner, 6002 ... demodulator, 6003 ... descrambler (decoder), 6004 ... DEMUX (demultiplexer), 6005 ... AV Coder (audio, video, still image coder), 6006 ... graphic controller, 6007 ... video controller, 6008 ... IO controller, 6009 ... FLASH ROM, 6010 ... CPU, 6011 ... RAM, 6012 ... card controller, 6013 ... modem controller , 6014 ... Ether Net controller, 6015 ... 1394 controller, 6016 ... EEPROM, 6017 ... disk controller, 6018 ... HDD, 6019 ... bus, 8001 ... device with BS digital tuner and DVD-RW decoding function, 8002 ... CS digital tuner and HDD Device with decoding function, 8003 ... Device with decoding function of D-VHS and HDD, 8004 ... Device with BS / CS digital tuner and display decoding function, 8005 ... Display device, 8006 ... For BS digital broadcasting Parabolic antenna, 8007 ... Display cable, 8008 ... Antenna cable, 8009 ... IEEE1394 cable, 8010 ... CS digital broadcasting parabolic antenna, 8011 ... BS / CS shared parabo Antenna, 8012 ... BS digital broadcasting tuner, 8013 ... D-VHS deck

Claims (27)

Reservation change for changing the initial reservation information for each device or the function of each device that is affected by changing the schedule of a broadcast program on an AV network to which a plurality of tuner devices and recording devices are connected A tuner system having a function,
SI information receiving means for receiving SI (Service Information) information which is information of a broadcast program;
SI information storage means for storing the received SI information;
SI information comparing means for comparing SI information already stored in the SI information storing means with SI information newly received by the SI information receiving means;
If the SI information received the newly by the SI information comparison means determines that there is no in the SI information storing means, the content of the SI information to save SI information received the new to the SI information storage means SI information changing means for changing
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the program information of the broadcast program is determined to be changed, and the schedule change of the broadcast program is changed. Program information change notification means for notifying the fact of,
From the program information change notification means, a program information change event receiving means for receiving an event for notifying that a schedule of a broadcast program has been changed;
Reservation information acquisition means for acquiring initial reservation information for each device or the function of each device in response to the event reception;
Among the initial reservation information acquired by the reservation information acquisition means, reservation information investigation means for extracting the initial reservation information affected by the schedule change of the program;
Program start judging means for judging whether or not the broadcast of the program related to the initial reservation information extracted by the reservation information examining means has already started;
Reservation changing means for changing the processing by the initial reservation information extracted by the reservation information examining means according to the determination result by the program start determining means for the initial reservation information,
The reservation changing means is
If it is determined that the program related to the extracted initial reservation information has already started by the program start determination means, reservation update means for changing the reservation end time of the initial reservation information;
A first reservation information canceling means for canceling the initial reservation information when the program related to the extracted initial reservation information is determined not yet started by the program start determination means;
First new reservation information generating means for generating first new reservation information changed in accordance with the schedule change of the program, with respect to the processing based on the initial reservation information canceled by the first reservation information canceling means;
A first new reservation means for performing reservation of the first new reservation information with respect to a device designated by the reservation or a function of the device;
First new reservation success / failure judging means for judging whether or not the reservation of the first new reservation means has been established;
When the first new reservation success / failure judging means judges that the reservation by the first new reservation means has not been established, what is the device designated by the reservation of the first new reservation information or the function of the device? A tuner system comprising: an alternative reservation unit that executes an alternative reservation process of the first new reservation information for a different device or a function of the device. The tuner system according to claim 1,
The tuner system characterized in that the device or device function specified in the reservation of the first new reservation information is the device or device function specified in the reservation of the initial reservation information. The tuner system according to claim 1, wherein
The alternative reservation means is:
A first alternative function / device search means for searching for a device or a function of the device that can be used in the reservation based on the first new reservation information;
Second new reservation information for generating second new reservation information as a substitute for the first new reservation information using the device or the function of the device acquired by the first alternative function / device search means Generating means;
A second new reservation unit configured to reserve the second new reservation information with respect to the device or the function of the device acquired by the first alternative function / device search unit specified in the reservation. A tuner system characterized by this. The tuner system according to claim 3, wherein
The alternative reservation means further includes second new reservation success / failure judging means for judging whether or not the reservation of the second new reservation means is established;
When the second new reservation success / failure determination means determines that the reservation by the second new reservation means has not been established, the reservation based on the cause reservation information that causes the reservation to be changed is changed. And a cause reservation changing means. The tuner system according to claim 4, wherein
The cause reservation changing means includes:
The second new reservation information for which the reservation in the second new reservation means has not been established, and the initial reservation information for each device or the function of each device acquired by the reservation information acquisition means Compare with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation means from among the other initial reservation information causing the failure of the reservation of the second new reservation information Failure cause identification means that identifies the cause reservation information and retrieves the device or device function specified in the cause reservation information;
A second alternative function / device search means for searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification means;
A second reservation cancellation means for canceling the reservation of the cause reservation information;
Using the device obtained by the second substitute function / device search means or the function of the device, third new reservation information to be substituted for the cause reservation information canceled by the second reservation cancellation means is generated. A third new reservation information generating means for
And a third new reservation unit that performs the reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search unit specified in the reservation. A tuner system characterized by this. Reservation change for changing the initial reservation information for each device or the function of each device that is affected by changing the schedule of a broadcast program on an AV network to which a plurality of tuner devices and recording devices are connected A tuner system having a function,
SI information receiving means for receiving SI (Service Information) information which is information of a broadcast program;
SI information storage means for storing the received SI information;
SI information comparing means for comparing SI information already stored in the SI information storing means with SI information newly received by the SI information receiving means;
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the newly received SI information is saved in the SI information storage means and the contents of the SI information are stored. SI information changing means for changing
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the program information of the broadcast program is determined to be changed, and the schedule change of the broadcast program is changed. Program information change notification means for notifying the fact of,
From the program information change notification means, a program information change event receiving means for receiving an event for notifying that a schedule of a broadcast program has been changed;
Reservation information acquisition means for acquiring initial reservation information for each device or the function of each device in response to the event reception;
Among the initial reservation information acquired by the reservation information acquisition means, reservation information investigation means for extracting the initial reservation information affected by the schedule change of the program;
Program start judging means for judging whether or not the broadcast of the program related to the initial reservation information extracted by the reservation information examining means has already started;
Reservation changing means for changing the processing by the initial reservation information extracted by the reservation information examining means according to the determination result by the program start determining means for the initial reservation information,
The reservation changing means is
If it is determined that the program related to the extracted initial reservation information has already started by the program start determination means, reservation update means for changing the reservation end time of the initial reservation information;
A first reservation information canceling means for canceling the initial reservation information when the program related to the extracted initial reservation information is determined not yet started by the program start determination means;
First new reservation information generating means for generating first new reservation information changed in accordance with the schedule change of the program, with respect to the processing based on the initial reservation information canceled by the first reservation information canceling means;
A first new reservation means for performing reservation of the first new reservation information with respect to a device designated by the reservation or a function of the device;
First new reservation success / failure judging means for judging whether or not the reservation of the first new reservation means has been established;
When the first new reservation success / failure determination unit determines that the reservation by the first new reservation unit has not been established, the reservation based on the cause reservation information that causes the reservation to be changed is changed. And a causal reservation changing means, and after the reservation change of the causal reservation information by the causal reservation changing means, the first new reservation means performs the reservation of the first new reservation information again. . The tuner system according to claim 6 , wherein
The tuner system characterized in that the device or device function specified in the reservation of the first new reservation information is the device or device function specified in the reservation of the initial reservation information. The tuner system according to claim 7, wherein
The cause reservation changing means includes:
The first new reservation information for which the reservation in the first new reservation means has not been established, and the initial reservation information for each device or the function of each device acquired by the reservation information acquisition means Compare with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation means from among the other initial reservation information that caused the failure of the reservation establishment of the first new reservation information Failure cause identification means that identifies the cause reservation information and retrieves the device or device function specified in the cause reservation information;
A second alternative function / device search means for searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification means;
A second reservation cancellation means for canceling the reservation of the cause reservation information;
Using the device obtained by the second substitute function / device search means or the function of the device, third new reservation information to be substituted for the cause reservation information canceled by the second reservation cancellation means is generated. A third new reservation information generating means for
And a third new reservation unit that performs the reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search unit specified in the reservation. A tuner system characterized by this. Reservation change for changing the initial reservation information for each device or the function of each device that is affected by changing the schedule of a broadcast program on an AV network to which a plurality of tuner devices and recording devices are connected A tuner system having a function,
SI information receiving means for receiving SI (Service Information) information which is information of a broadcast program;
SI information storage means for storing the received SI information;
SI information comparing means for comparing SI information already stored in the SI information storing means with SI information newly received by the SI information receiving means;
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the newly received SI information is saved in the SI information storage means and the contents of the SI information are stored. SI information changing means for changing
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the program information of the broadcast program is determined to be changed, and the schedule change of the broadcast program is changed. Program information change notification means for notifying the fact of,
From the program information change notification means, a program information change event receiving means for receiving an event for notifying that a schedule of a broadcast program has been changed;
Reservation information acquisition means for acquiring initial reservation information for each device or the function of each device in response to the event reception;
Among the initial reservation information acquired by the reservation information acquisition means, reservation information investigation means for extracting the initial reservation information affected by the schedule change of the program;
Program start judging means for judging whether or not the broadcast of the program related to the initial reservation information extracted by the reservation information examining means has already started;
Reservation changing means for changing the processing by the initial reservation information extracted by the reservation information examining means according to the determination result by the program start determining means for the initial reservation information,
The reservation changing means is
If it is determined that the program related to the extracted initial reservation information has already started by the program start determination means, reservation update means for changing the reservation end time of the initial reservation information;
A first reservation information canceling means for canceling the initial reservation information when the program related to the extracted initial reservation information is determined not yet started by the program start determination means;
First new reservation information generating means for generating first new reservation information changed in accordance with the schedule change of the program, with respect to the processing based on the initial reservation information canceled by the first reservation information canceling means;
The reservation of the first new reservation information, a first new reservation hand stages performed on the function of the specified device or devices in the reservation,
Reservation update success / failure determination means for determining whether or not a reservation update of the reservation update means has been established;
If the reservation update success / failure determination means determines that the reservation update by the reservation update means has not been established, the reservation for changing the reservation based on the cause reservation information that has caused the reservation update not to be established After the reservation change of the cause reservation information by the cause reservation change means, the initial reservation information extracted by the reservation information investigation means is updated to information whose end time has been changed by the reservation update means. A tuner system characterized by this. The tuner system according to claim 9, wherein
The cause reservation changing means includes:
Initial reservation information in which an end time of a reservation for which a reservation in the reservation update unit has not been established has been changed, and initial reservation information for each device or function of each device acquired by the reservation information acquisition unit Compared with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation means from among the above, the reservation end time of the reservation was changed, causing the failure to establish the reservation of the initial reservation information Failure cause identification means for identifying other initial reservation information as cause reservation information and taking out the device or device function specified in the cause reservation information,
A second alternative function / device search means for searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification means;
A second reservation cancellation means for canceling the reservation of the cause reservation information;
Using the device obtained by the second substitute function / device search means or the function of the device, third new reservation information to be substituted for the cause reservation information canceled by the second reservation cancellation means is generated. A third new reservation information generating means for
And a third new reservation unit that performs the reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search unit specified in the reservation. A tuner system characterized by this. The tuner system according to claim 3, wherein
Reservation update success / failure determination means for determining whether or not a reservation update of the reservation update means has been established;
If the reservation update success / failure determination means determines that the reservation update by the reservation update means has not been established, the reservation for changing the reservation based on the cause reservation information that has caused the reservation update not to be established A tuner system comprising: a changing means. The tuner system according to claim 11, wherein
The cause reservation changing means includes:
Initial reservation information in which an end time of a reservation for which a reservation in the reservation update unit has not been established has been changed, and initial reservation information for each device or function of each device acquired by the reservation information acquisition unit Compared with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation means from among the above, the reservation end time of the reservation was changed, causing the failure to establish the reservation of the initial reservation information Failure cause identification means for identifying other initial reservation information as cause reservation information and taking out the device or device function specified in the cause reservation information,
A second alternative function / device search means for searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification means;
A second reservation cancellation means for canceling the reservation of the cause reservation information;
Using the device obtained by the second substitute function / device search means or the function of the device, third new reservation information to be substituted for the cause reservation information canceled by the second reservation cancellation means is generated. A third new reservation information generating means for
And a third new reservation unit that performs the reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search unit specified in the reservation. A tuner system characterized by this. In a tuner system on an AV network to which a plurality of tuner devices and recording devices are connected, the initial reservation information for each device or the function of each device that is affected by the schedule change of a broadcast program is changed. Reservation change method to
SI information receiving step for receiving SI (Service Information) information which is information of a broadcast program;
An SI information storage step of storing the received SI information in an SI information storage means;
SI information comparison step for comparing SI information already stored in the SI information storage means with SI information newly received in the SI information reception step;
When it is determined in the SI information comparison step that the newly received SI information does not exist in the SI information storage means, the newly received SI information is saved in the SI information storage means, and the contents of the SI information are stored. SI information changing step for changing
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the program information of the broadcast program is determined to be changed, and the schedule change of the broadcast program is changed. A program information change notification step for notifying the fact of
A program information change event receiving step for receiving an event notifying that the program to be broadcast has been changed in schedule, in the program information changing step;
Reservation information acquisition step for acquiring initial reservation information for each device or the function of each device in response to the event reception;
Of the initial reservation information acquired in the reservation information acquisition step, the reservation information investigation step of extracting the initial reservation information affected by the schedule change of the program,
A program start determination step for determining whether or not the broadcast of the program related to the initial reservation information extracted in the reservation information investigation step has already started;
A reservation change step for changing the processing based on the initial reservation information extracted in the reservation information investigation step according to the determination result of the program start determination step for the initial reservation information,
The reservation changing step includes:
If it is determined that the program related to the extracted initial reservation information has already started in the program start determination step, a reservation update step for changing the reservation end time of the initial reservation information;
A first reservation information cancellation step for canceling the initial reservation information when it is determined that the program related to the extracted initial reservation information has not yet started in the program start determination step;
A first new reservation information generation step for generating first new reservation information changed in accordance with the schedule change of the program, with respect to the processing by the initial reservation information canceled in the first reservation information cancellation step;
A first new reservation step for performing reservation of the first new reservation information with respect to a device or a function of the device designated by the reservation;
A first new reservation success / failure determination step for determining whether or not the reservation of the first new reservation step has been established;
When it is determined in the first new reservation success / failure determination step that the reservation in the first new reservation step has not been established, the device or the function of the device specified in the reservation of the first new reservation information A reservation changing method, comprising: an alternative reservation step of executing an alternative reservation process of the first new reservation information for a different device or a function of the device. The reservation changing method according to claim 13,
In the first new reservation step, the device or device function specified in the reservation of the first new reservation information is a device or device function specified in the reservation of the initial reservation information. Reservation change method. The reservation changing method according to claim 13,
The alternative reservation step includes:
A first alternative function / device search step of searching for a device or a function of the device that can be used in the reservation based on the first new reservation information;
Second new reservation information for generating second new reservation information as a substitute for the first new reservation information using the device or the function of the device acquired in the first substitute function / device search step. Generation step;
A second new reservation step for performing reservation of the second new reservation information for the device or the function of the device acquired in the first alternative function / device search step specified in the reservation. The reservation change method characterized by this. The reservation changing method according to claim 15,
The alternative reservation step further includes a second new reservation success / failure determination step of determining whether or not the reservation of the second new reservation step is established;
If it is determined in the second new reservation success / failure determination step that the reservation in the second new reservation step has not been established, the reservation based on the cause reservation information that has caused the reservation not to be established A reservation changing method comprising a cause reservation changing step for changing. The reservation change method according to claim 16,
The cause reservation changing step includes:
The second new reservation information for which the reservation in the second new reservation step has not been established, and the initial reservation information for each device or the function of each device acquired in the reservation information acquisition step Compare with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation step from the inside, the other initial reservation information that caused the failure of the reservation establishment of the second new reservation information Failure cause identification step that identifies the cause reservation information and retrieves the device or device function specified in the cause reservation information;
A second alternative function / device search step of searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification step;
A second reservation cancellation step for canceling the reservation of the cause reservation information;
Using the device or the function of the device acquired by the second substitute function / device search step, third new reservation information to be substituted for the cause reservation information canceled in the second reservation cancellation step is generated. A third new reservation information generation step to perform,
And a third new reservation step for performing reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search means specified in the reservation. The reservation change method characterized by this. In a tuner system on an AV network to which a plurality of tuner devices and recording devices are connected, the initial reservation information for each device or the function of each device that is affected by the schedule change of a broadcast program is changed. Reservation change method to
SI information receiving step for receiving SI (Service Information) information which is information of a broadcast program;
An SI information storage step of storing the received SI information in an SI information storage means;
SI information comparison step for comparing SI information already stored in the SI information storage means with SI information newly received in the SI information reception step;
When it is determined in the SI information comparison step that the newly received SI information does not exist in the SI information storage means, the newly received SI information is saved in the SI information storage means, and the contents of the SI information are stored. SI information changing step for changing
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the program information of the broadcast program is determined to be changed, and the schedule change of the broadcast program is changed. A program information change notification step for notifying the fact of
A program information change event receiving step for receiving an event notifying that the program to be broadcast has been changed in schedule, in the program information changing step;
Reservation information acquisition step for acquiring initial reservation information for each device or the function of each device in response to the event reception;
Of the initial reservation information acquired in the reservation information acquisition step, the reservation information investigation step of extracting the initial reservation information affected by the schedule change of the program,
A program start determination step for determining whether or not the broadcast of the program related to the initial reservation information extracted in the reservation information investigation step has already started;
A reservation change step for changing the processing based on the initial reservation information extracted by the reservation information investigation means according to the determination result of the program start determination step for the initial reservation information,
The reservation changing step includes:
If it is determined that the program related to the extracted initial reservation information has already started in the program start determination step, a reservation update step for changing the reservation end time of the initial reservation information;
A first reservation information cancellation step for canceling the initial reservation information when it is determined that the program related to the extracted initial reservation information has not yet started in the program start determination step;
A first new reservation information generation step for generating first new reservation information changed in accordance with the schedule change of the program, with respect to the processing by the initial reservation information canceled in the first reservation information cancellation step;
A first new reservation step for performing reservation of the first new reservation information with respect to a device or a function of the device designated by the reservation;
A first new reservation success / failure determination step for determining whether or not the reservation of the first new reservation step has been established;
In the first new reservation success / failure determination step, if it is determined that the reservation in the first new reservation step has not been established, a reservation based on the cause reservation information that has caused the reservation not to be established is made. A cause reservation change step to be changed, and after the reservation change of the cause reservation information by the execution of the cause reservation change step, the first new reservation step is executed again to reserve the first new reservation information. Reservation change method characterized by. The reservation changing method according to claim 18,
In the first new reservation step, the device or device function specified in the reservation of the first new reservation information is a device or device function specified in the reservation of the initial reservation information. Reservation change method. The reservation changing method according to claim 18,
The cause reservation changing step includes:
The first new reservation information for which the reservation in the first new reservation step has not been established, and the initial reservation information for each device or the function of each device acquired in the reservation information acquisition step Compare with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation step from the inside, the other initial reservation information that caused the failure of the reservation establishment of the first new reservation information Failure cause identification step that identifies the cause reservation information and retrieves the device or device function specified in the cause reservation information;
A second alternative function / device search step of searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification step;
A second reservation cancellation step for canceling the reservation of the cause reservation information;
Using the device or the function of the device acquired by the second substitute function / device search step, third new reservation information to be substituted for the cause reservation information canceled in the second reservation cancellation step is generated. A third new reservation information generation step to perform,
And a third new reservation step for performing reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search means specified in the reservation. The reservation change method characterized by this. In a tuner system on an AV network to which a plurality of tuner devices and recording devices are connected, the initial reservation information for each device or the function of each device that is affected by the schedule change of a broadcast program is changed. Reservation change method to
SI information receiving step for receiving SI (Service Information) information which is information of a broadcast program;
An SI information storage step of storing the received SI information in an SI information storage means;
SI information comparison step for comparing SI information already stored in the SI information storage means with SI information newly received in the SI information reception step;
When it is determined in the SI information comparison step that the newly received SI information does not exist in the SI information storage means, the newly received SI information is saved in the SI information storage means, and the contents of the SI information are stored. SI information changing step for changing
When the SI information comparing means determines that the newly received SI information does not exist in the SI information storage means, the program information of the broadcast program is determined to be changed, and the schedule change of the broadcast program is changed. A program information change notification step for notifying the fact of
A program information change event receiving step for receiving an event notifying that the program to be broadcast has been changed in schedule, in the program information changing step;
Reservation information acquisition step for acquiring initial reservation information for each device or the function of each device in response to the event reception;
Of the initial reservation information acquired in the reservation information acquisition step, the reservation information investigation step of extracting the initial reservation information affected by the schedule change of the program,
A program start determination step for determining whether or not the broadcast of the program related to the initial reservation information extracted in the reservation information investigation step has already started;
A reservation change step for changing the processing based on the initial reservation information extracted in the reservation information investigation step according to the determination result of the program start determination step for the initial reservation information,
The reservation changing step includes:
If it is determined that the program related to the extracted initial reservation information has already started in the program start determination step, a reservation update step for changing the reservation end time of the initial reservation information;
A first reservation information cancellation step for canceling the initial reservation information when it is determined that the program related to the extracted initial reservation information has not yet started in the program start determination step;
A first new reservation information generation step for generating first new reservation information changed in accordance with the schedule change of the program, with respect to the processing by the initial reservation information canceled in the first reservation information cancellation step;
A first new reservation step for performing reservation of the first new reservation information with respect to a device or a function of the device designated by the reservation;
A reservation update success / failure determination step for determining whether or not the reservation update of the reservation update step has been established;
If the reservation update success / failure determination step determines that the reservation update in the reservation update step has not been established, the cause reservation that changes the reservation based on the cause reservation information that has caused the reservation update not to be established A reservation step, and after the reservation change of the cause reservation information by executing the cause reservation change step, the initial reservation information extracted by the reservation information investigation step is updated to information whose end time has been changed by the reservation update step. The reservation change method characterized by this. The reservation change method according to claim 21,
The cause reservation changing step includes:
Initial reservation information in which the end time of the reservation in which the reservation in the reservation update step has not been established is changed, and the initial reservation information for each device or the function of each device acquired in the reservation information acquisition step Compared with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation step from among the above, the reservation end time of the reservation was changed, which caused the reservation establishment failure Identifying other initial reservation information as cause reservation information, and a failure cause identification step for extracting a device or a function of the device designated by the cause reservation information,
A second alternative function / device search step of searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification step;
A second reservation cancellation step for canceling the reservation of the cause reservation information;
Using the device or the function of the device acquired by the second substitute function / device search step, third new reservation information to be substituted for the cause reservation information canceled in the second reservation cancellation step is generated. A third new reservation information generation step to perform,
And a third new reservation step for performing reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search step specified in the reservation. The reservation change method characterized by this. The reservation changing method according to claim 15,
A reservation update success / failure determination step for determining whether or not the reservation update of the reservation update step has been established;
If the reservation update success / failure determination step determines that the reservation update in the reservation update step has not been established, the cause reservation that changes the reservation based on the cause reservation information that has caused the reservation update not to be established A reservation changing method comprising: a changing step. The reservation changing method according to claim 23, wherein
The cause reservation changing step includes:
Initial reservation information in which the end time of the reservation in which the reservation in the reservation update step has not been established is changed, and the initial reservation information for each device or the function of each device acquired in the reservation information acquisition step Compared with other initial reservation information excluding the initial reservation information extracted by the reservation information investigation step from among the above, the reservation end time of the reservation was changed, which caused the reservation establishment failure Identifying other initial reservation information as cause reservation information, and a failure cause identification step for extracting a device or a function of the device designated by the cause reservation information,
A second alternative function / device search step of searching for a device or a function of the device that replaces the device or the function of the device extracted by the failure cause identification step;
A second reservation cancellation step for canceling the reservation of the cause reservation information;
Using the device or the function of the device acquired by the second substitute function / device search step, third new reservation information to be substituted for the cause reservation information canceled in the second reservation cancellation step is generated. A third new reservation information generation step to perform,
And a third new reservation step for performing reservation of the third new reservation information with respect to the device or the function of the device acquired by the second alternative function / device search step specified in the reservation. The reservation change method characterized by this.   25. The reservation changing method according to any one of claims 13 to 24, wherein each step is executed by using a software element of a HAVi standard that is a standard in a network environment of an AV device. Reservation change method.   A program for causing a computer to execute the reservation changing method according to any one of claims 13 to 24.   A computer-readable recording medium on which the program according to claim 26 is recorded.