JP5449681B2 - Broadcast recording device - Google Patents

Description

  The present invention relates to a broadcast recording apparatus for digital broadcasting, and particularly to playback of recorded multi-organized programs corresponding to multi-organized broadcasts in which one main program and one or more sub-programs are broadcast at the same time on a single channel. In some cases, the present invention relates to a broadcast recording apparatus capable of initially reproducing a program desired by a user among the multi-organized programs as a main program.

  In ISDB-T (Integrated Services Digital Broadcasting for Terrestrial) terrestrial digital television broadcasting operated in Japan, the transmission band of one channel is divided into 13 segments, of which 12 segments are terrestrial. Assigned to digital broadcasting. A high-definition program for one channel is broadcast using all 12 segments. In addition, “multi-organized broadcasting” is performed in which 12 segments are divided and a standard-definition program for up to 3 channels is broadcast at the same time.

  The multi-organized broadcast program (multi-organized program) is composed of one main program defined by the default ES and one or more sub-programs. When the user selects a broadcast station that broadcasts a multi-organized program, the main program is initially output (screen display, audio output, etc.) as a default. Here, the configuration of the multi-organized program will be briefly described with reference to the drawings. FIG. 14 is a diagram illustrating an example of an electronic program guide (EPG) when a multi-organized program exists. As described above, the multi-organization broadcasting is a digital broadcasting in which a maximum of three programs with a standard image quality are broadcast in a band corresponding to one channel for broadcasting one program with a normal high-definition image quality. In the program table shown in the example of FIG. 14, a broadcasting station having channel number 2 broadcasts program A, which is a program for a single channel (single program), in the time zone from 9:00 to 10:00. Thereafter, this broadcasting station broadcasts the multi-organization program in the time zone from 10:00 to 11:00. That is, the band for one channel is divided into three subchannels, and programs B-1, B-2, and B-3 are broadcast on each subchannel. Also, from 11:00, the multi-organization is finished and the program C, which is a single-organized program, is broadcast.

  In digital terrestrial broadcasting, video data, audio data, subtitle data, data broadcasting, and broadcast service PSI (Program Specific Information) / SI (Service Information) (program specific information / program arrangement information) are transported It is divided into packets called stream packets (TSP: Transport Stream Packets), which are multiplexed in time division in MPEG2-TS (Transport Stream) format and broadcast as a single transport stream (TS). Yes. Individual identification information called PID (Packet ID) is given to the header of each TSP including the divided video data and audio data for each data type and service (program). Based on the PID and PSI / SI, it is possible to determine a TSP that includes video data and audio data of a service (program).

  In recent years, some broadcast receiving apparatuses having a function of recording a digital broadcast record the received TS in the MPEG2-TS format (stream format) (hereinafter, a broadcast receiving apparatus having a recording function of this format) (Referred to as “broadcast recording device” or “broadcast recording device”). In such a broadcast recording apparatus, when the above-mentioned multi-organized program is recorded, both the main program and the subprogram are recorded. Conventionally, when the recorded multi-organized program is reproduced, the main program is first displayed on the screen of the apparatus as a default. Is displayed. In other words, even if the recording of a multi-organized program targets a subprogram, and the program that the user desires to watch during playback is a subprogram, conventionally, the main program is played first, contrary to the intention of the user. Will be. In this case, the user must first reproduce and display the main program when reproducing the recorded multi-organized program, and then perform some operation via a key provided on the remote control or the apparatus body to display the desired subprogram. There is a lack of usability. In addition, the broadcast recording apparatus may have a function of moving (moving) recorded data to a removable medium. However, at present, from the viewpoint of copyright protection, once recorded data is moved to a removable medium, the recorded data cannot be processed on the moved removable medium. Therefore, when a user plays back a multi-organized program recorded from a moved removable medium, there is a problem that a main program that is not desired to be played is first displayed on the screen.

  As a countermeasure to the above-described problems, the multi-organized program is divided into programs according to the prior art, meta information such as search information for each divided program is added and recorded, and the program is reproduced when the multi-organized program is reproduced. A recording apparatus that enables reproduction for each time is disclosed (see Patent Document 1).

JP 2006-294245 A

  However, in a broadcast recording apparatus according to the prior art that records data with meta information added, it is necessary to make the meta information compatible. If the added meta information is not compatible, the recorded data cannot be played back by a playback device that does not support the recording method of the broadcast recording device that recorded the data.

  Accordingly, an object of the present invention is to solve the above-mentioned problems and to reproduce a program desired by a user from a plurality of programs constituting the recorded multi-organized program when the recorded multi-organized program is reproduced. It is an object of the present invention to provide a broadcast recording apparatus with excellent usability that can be reproduced first.

In order to solve the above-described problems, a broadcast recording apparatus according to the present invention
A digital broadcast broadcast recording device (recording device) that supports multi-organization broadcasting that broadcasts multi-organization programs composed of one main program and one or more sub-programs in a single stream signal (TS). There,
A broadcast receiver for receiving the stream signal (TS);
A recording instruction unit for instructing recording in units of programs of the program included in the multi-organized broadcasting;
A storage unit for storing a stream signal including a program instructed to be recorded by the recording instruction unit;
When the program instructed to be recorded by the recording instruction unit is a sub program, the stream signal stored in the storage unit is presented to the user to select whether or not the component_group_id values of the main program and sub program can be switched Then, based on the selection, a processing unit that replaces the value of the component_group_id of the subprogram and the value of the component_group_id of the main program in a component group descriptor in an EIT (Event Information Table) ;
It is characterized by comprising.

As described above, the broadcast recording apparatus according to the present invention temporarily stores (records) a stream signal of a multi-organization program instructed to be recorded in a storage unit, and controls information in the stream signal (TS) stored in the storage unit. However, the broadcast recording apparatus according to the present invention replaces the control information in the stream signal being received by the broadcast receiving unit, and then stores the stream signal in which the control information is replaced in the storage unit. It can also be implemented.
That is, the broadcast recording apparatus according to the embodiment of the present invention
A broadcast recording apparatus (recording apparatus) for digital broadcasting corresponding to multi-organization broadcasting for broadcasting a multi-organization program including one main program and one or more sub-programs in a single stream signal,
A broadcast receiver for receiving the digital broadcast stream signal (TS);
A recording instruction unit for instructing recording in units of programs of the program included in the multi-organized broadcasting;
When the program instructed to be recorded by the recording instructing unit is a subprogram, in the stream signal of the main program and subprogram of the multi-organization broadcast received by the broadcast receiving unit, including the program instructed to record The user can select whether or not the value of the component_group_id of the main program and the subprogram can be switched, and based on the selection, the value of the component_group_id of the subprogram in the component group descriptor in the EIT (Event Information Table) A processing unit that replaces the value of component_group_id of the main program ;
A storage unit for storing a stream signal in which the value of the component_group_id is replaced ;
It is characterized by comprising.

  As described above, according to the present invention, when the recorded multi-organized program is reproduced, the program desired by the user among the plurality of programs constituting the recorded multi-organized program can be reproduced first as the main program. It becomes possible.

  Hereinafter, a broadcast recording apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. In the following, a description will be given assuming that the broadcast recording apparatus is a stationary type, but the present invention is not limited to this, and a mobile portable receiving terminal (mobile) capable of receiving and recording 1-segment broadcasting. Note that it is also applicable to telephones, PDAs (Personal Digital Assistance), etc. In the following description, “recording” and “recording” are used synonymously in the sense of “storage of stream signal in storage unit”.

  FIG. 1 is a functional block diagram of a broadcast recording apparatus according to the present invention. The broadcast recording apparatus 100 includes an antenna ANT, a broadcast receiving unit 110, a demultiplexer 120, a video decoder unit 130, a caption decoder unit 140, an audio decoder unit 150, a display unit DIS, a speaker SP, a measurement unit 160, and a storage unit (flash memory or the like). ) 170, a control information processing unit 180, a control unit 190, an input operation unit KEY, and a system bus SB. Further, the storage unit 170 includes a recording data storage unit 172 and a viewing frequency information storage unit 174. The control unit 190 includes a playback control unit 192 and a recording control unit 194.

  The antenna ANT receives a digital terrestrial broadcast signal (RF signal). The broadcast receiving unit 110 tunes (frequency converts) the RF signal received by the antenna ANT based on a frequency (channel) designation command from the control unit 190. The channel designation command from the control unit 190 is generated based on the channel designated by the user using the input operation unit KEY or the like. Furthermore, the broadcast receiving unit 110 demodulates the tuned RF signal into an MPEG2-TS format TS (Transport Stream) signal.

  The demultiplexer 120 separates the TSP included in the TS signal into an audio packet, a video packet, a data broadcast packet, and PSI / SI based on the packet ID (PID) in the demodulated TS signal. That is, the broadcast data received by the antenna ANT is separated into video information, audio information, caption information, and control information. The separated video packet is output to the video decoder unit 130, the data broadcast packet is output to the caption decoder unit 140, and the audio packet is output to the audio decoder unit 150. The audio decoder unit 150 decodes the audio data in the input audio packet and outputs it to the speaker SP. The video decoder unit 130 and the subtitle decoder unit 140 decode the video data in the input video packet and the subtitle data in the data broadcast packet, respectively, and output them to the display unit DIS. The display unit DIS displays a data broadcast screen, an electronic program guide (EPG) based on BML (Broadcast Markup Language) in the input data broadcast packet, and a program video.

  The measuring unit 160 measures the time that a single program is continuously viewed (the time when the program is output to the display unit DIS and the speaker SP). The recording data storage unit 172 stores a stream signal including program data and control information in a stream format. The viewing frequency information storage unit 174 stores the viewing duration for each program measured by the measuring unit 160. The control information processing unit 180 performs predetermined processing on the information related to the main program and the subprogram of the recorded multi-organization program. The reproduction control unit 192 controls reproduction of the recording data stored in the recording data storage unit 172. The recording control unit 194 performs an instruction of a program to be recorded (recorded) and each determination operation at the time of recording processing described below. The input operation unit KEY accepts an input operation from the user.

  The broadcast recording apparatus according to an embodiment of the present invention, when recording a multi-program that has been reserved for recording, broadcasts on the specified subchannel when the subchannel specified as the target of recording reservation is a subchannel. If the program is a subprogram, the control information related to the main program and the subprogram of the multi-organized program is switched and recorded. Further, the broadcast recording apparatus according to another embodiment, when the user starts recording while viewing the multi-organized program, and the sub-channel designated as the target of recording is a sub-channel, Control information related to the sub-program is switched and recorded. Such recording processing by the broadcast recording apparatus 100 of the present invention will be described below with reference to a flowchart.

  2 and 3 are flowcharts showing an example of a recording process of the broadcast recording apparatus 100 according to the present invention. The recording process according to the flowchart of FIG. 2 shows the case of reserved recording, and FIG. 3 shows the case of recording during viewing. First, a recording process according to the present invention in the case of reserved recording will be described with reference to FIG. The user performs a predetermined operation via the input operation unit KEY or the like to reserve the recording of the multi-organized program in advance, and information regarding the program reserved for recording by the user is stored in the storage unit 170. The broadcast recording apparatus 100 starts the recording process when the start time (broadcast time) of the program reserved for recording is reached. First, based on an instruction from the recording control unit 194, the broadcast wave receiving unit 110 receives a broadcast wave of a multi-organized broadcast including a subchannel reserved for recording (designated) by the user (step S11). The recording control unit 194 stores the TS of the multi-organization broadcast to be recorded included in the received broadcast wave in the recording data storage unit 172 (step S12). Thereafter, until it is determined in step S13 that the current time is a time (end time) set as a time for ending the recording, the recording of the program is continued by repeating steps S11 and S12. When the recording of the designated program ends (when it is determined that the current time is the end time), the recording control unit 194 determines whether or not the subchannel that broadcasts the program reserved for recording is the main channel, that is, the recording. It is determined whether or not the reserved program is the main program (step S14).

  Here, a method for determining the main program and the subprogram in multi-organization broadcasting will be described. According to ARIB (Association of Radio Industries And Businesses), information related to multi-organization broadcasting (control information) is described in a component group descriptor in an EIT (Event Information Table). Note that EIT is one of SI and describes information related to the program such as the name of the program, broadcast date and time, and description of the contents. 11 and 12 show schematic diagrams of the data structure of the EIT and component group descriptor, respectively. As shown in FIG. 11, the component group descriptor is described in the EIT. In the component group descriptor shown in FIG. 12, a component group ID (component_group_id) is assigned to each program (main program and subprogram) constituting the multi-organized program. A program whose component group ID is “0x0” is a main program, and other programs are subprograms. Therefore, it is possible to determine whether or not the program to be recorded is the main program based on the value of the component group ID described in the EIT.

  Note that a PMT (Program Map Table) is used to determine a TSP that includes a stream (video, audio, caption, etc.) constituting each program of the multi-organized program. FIG. 13 shows a schematic diagram of the data structure of the PMT. In a multi-organized program, a component tag (component_tag) that identifies the type of element stream (type of video, audio, subtitle, etc.) constituting the program to which the component group ID is assigned is described for each component group ID. The As shown in FIG. 13, a PID corresponding to a component tag is described in one of the PSIs, and the PMT has a PID corresponding to a component tag related to a component group ID of a desired program. TSP can be determined. On the receiving side, a TSP including a stream of a desired program is received, and the program is reproduced (output) from video, audio, caption data, etc. included in the TSP.

  Returning to the flowchart of FIG. If it is determined in step S14 that the sub-channel reserved for recording is the main channel, that is, the program broadcast on the sub-channel reserved for recording is the main program, the recording process ends. If it is determined in step S14 that the subchannel reserved for recording is not the main channel, that is, the program broadcast on the subchannel reserved for recording is a subprogram, the process proceeds to step S15. In step S15, control information processing section 180 replaces and replaces the control information of the main channel and the control information of the subchannel reserved for recording (designated) in the TS stored (recorded) in recording data storage section 172. Store TS as recorded data. Specifically, the component group ID value for the subprogram reserved for recording is rewritten to “0x0” indicating that it is the main program, and the component group ID value for the main program is changed to the component of the subprogram reserved for recording. Rewrite to the group ID value. As a result of the recording process described above, the subprogram stream reserved for recording is stored in the storage unit as the main program. Therefore, during playback, the subprogram reserved for recording is initially played and displayed as a default. .

  Next, a recording process according to the present invention in the case of recording during viewing will be described with reference to FIG. When the user performs a predetermined operation via the input operation unit KEY or the like while viewing the multi-organized program, the broadcast recording apparatus 100 starts the recording process. First, the recording control unit 194 stores, in the recording data storage unit 172, the multi-organized broadcast TS to be recorded, which is included in the broadcast wave received by the broadcast wave receiving unit 110 (step S21). Thereafter, the program recording (TS storage in the recording data storage unit 172) is continued until it is determined in step S22 that there is an instruction to end recording by the user. When the recording control unit 194 determines in step S22 that there is an instruction to end recording, the recording control unit 194 receives an instruction of a subchannel to be recorded from the user (step S23). When the recording control unit 194 receives an instruction from the user, for example, when the recording end instruction is received, the recording control unit 194 controls the display unit DIS to display a screen for selecting a subchannel to be recorded, The speaker SP is controlled to output a voice guidance prompting selection. In step S24, it is determined whether or not the subchannel designated by the user is the main channel, that is, whether or not the program broadcast on the designated subchannel is the main program. Since the determination method is the same as the method described in the above embodiment, the description is omitted.

  If it is determined in step S24 that the subchannel designated by the user is not the main channel, that is, the program broadcast on the designated subchannel is a subprogram, the process proceeds to step S25. In step S25, control information processing section 180 replaces the control information of the main channel and the control information of the designated subchannel in the TS stored in recording data storage section 172, and records the TS with the control information replaced. Store as data. Since the control information replacement process is the same as that of the above-described embodiment, the description thereof is omitted. Since the subprogram stream designated by the user is stored in the storage unit as the main program by the control information replacement process, the subprogram designated by the user is initially set as the default by the playback control unit 192 at the time of playback. Played / displayed.

  The control information replacement process in steps S15 (FIG. 2) and S25 (FIG. 3) will be described with reference to FIG. FIG. 4 is a diagram showing the control information stored in the storage unit 170 and the TS of the program. The example in the figure is a case where a multi-organized program composed of two programs A and B is recorded. FIG. 4 (a) is before the control information is exchanged, and FIG. 4 (b) is after the control information is exchanged. The memory | storage part 170 is shown. In order to simplify the description, in FIG. 4, the program corresponding to the component group ID “1” is referred to as “main program”, and the program corresponding to “2” is referred to as “subprogram”. As described above, from the component tag value related to the component group ID described in the EIT included in the recorded TS, the TSP PID including the program stream (video, audio, subtitles, etc.) corresponding to each component group ID Can be obtained. In the example of FIG. 4, the PIDs of the TSP including the main program stream whose component group ID is “1” are “1001”, “1002”, and “1003”. Note that, according to ARIB regulations, the type of element stream included in a TSP having a PID corresponding to the component tag can be determined from the component tag value. For example, the component tag value for the video data stream is defined in the range of “0x00 to 0x0F”, and the component tag value for the audio data stream is defined in the range of “0x10 to 0x2F”. Therefore, it can be determined from the component tag value whether the element stream included in the TSP having the PID corresponding to the component tag value is video, audio, or caption. In the example of the figure, the main program whose component group ID is “1” is composed of one video and two audios.

  In the example of FIG. 4A, the data included in the TSP with PIDs “1001”, “1002”, and “1003” relates to “program A”, and therefore the storage unit 170 stores “program A”. Records a multi-organized program which is a “main program”. In addition, the PID of the TSP including the sub program stream whose component group ID is “2” is “2001”, “2002”, and “2003”, and the PID is “2001”, “2002”, and “2003”. The data contained in a certain TSP relates to “Program B”. Therefore, “program B” is a “subprogram”. Here, it is assumed that the user who recorded this multi-organized program desires that “program B”, which is a subprogram, is displayed first when reproducing the recorded data. In this case, in steps S15 and S25, as shown in FIG. 4B, a process of rewriting the “component group ID” that defines the main program and the subprogram as control information is performed. By this processing, the data of the program whose “component group ID is“ 1 ”” indicating the “main program” is included in the TSPs with the PIDs “2001”, “2002”, and “2003”. Therefore, at the time of reproduction, “program B” included in the TSP having PIDs “2001”, “2002”, and “2003” as data constituting the program is first displayed as the main program. As described above, according to the present invention, when the recorded multi-organized program is reproduced, the program desired by the user can be displayed as the main program first. Therefore, as in the past, for the user who recorded the multi-programmed program with the desire to record “program B”, the original main program “program A” is not displayed and frustrated. An excellent broadcast recording apparatus can be provided.

  In the above-described embodiment, the control information replacement process is performed on the TS of the recorded program, that is, the TS stored in the storage unit. However, according to the present invention, the TS of the program to be recorded can be stored in the storage unit while performing the control information replacement process. Hereinafter, an embodiment in which a program is recorded while performing control information replacement processing will be described with reference to a flowchart. 5 and 6 are flowcharts showing an example of recording processing of the broadcast recording apparatus 100 according to the present invention. The recording process according to the flowchart of FIG. 5 shows the case of reserved recording, and FIG. 6 shows the case of recording during viewing.

  The case of reserved recording will be described with reference to FIG. It is assumed that the user performs a predetermined operation via the input operation unit KEY or the like to reserve the recording of the multi-organized program in advance, and information regarding the program reserved by the user is stored in the storage unit 170. The broadcast recording apparatus 100 starts the recording process when the start time (broadcast time) of the program reserved for recording is reached. First, based on an instruction from the recording control unit 194, the broadcast wave receiving unit 110 receives a broadcast wave of a multi-organization broadcast including a subchannel that broadcasts a program reserved for recording (designated) by the user (step S31). Next, the recording control unit 194 determines whether or not the sub-channel that broadcasts the recording-reserved program is the main channel, that is, whether or not the recording-reserved program is the main program (step S32). . Note that the determination method is the same as that in the above-described embodiment, and thus description thereof is omitted. If it is determined in step S32 that the subchannel reserved for recording is the main channel, that is, the program broadcast on the subchannel reserved for recording is determined to be the main program, the process proceeds to step S34 and is included in the broadcast wave. The recorded TS is stored in the recording data storage unit 172. If it is determined in step S32 that the subchannel reserved for recording is not the main channel, that is, the program broadcast on the subchannel reserved for recording is a subprogram, the process proceeds to step S33.

  In step S33, control information processing section 180 obtains the control information of the main channel and the control information of the subchannel reserved for recording (designated) in the TS included in the broadcast wave being received by broadcast wave receiving section 110. The TS with the replacement and control information replaced is stored as recording data. The control information replacement process is the same as that in the above-described embodiment, and a description thereof will be omitted. Thereafter, in step S34, the program recording is continued until it is determined that the current time is the time (end time) set as the time for ending the recording. If it is determined in step S32 that the subchannel reserved for recording is the main channel, that is, the program broadcast on the subchannel reserved for recording is determined to be the main program, the process proceeds to step S35 and is included in the broadcast wave. The recorded TS is stored in the recording data storage unit 172. Thereafter, in step S36, the program recording is continued until it is determined that the current time is the time (end time) set as the time for ending the recording.

  Next, the case of recording during viewing will be described with reference to FIG. When the user performs a predetermined operation via the input operation unit KEY or the like while viewing the multi-organized program, the broadcast recording apparatus 100 starts the recording process. First, the recording control unit 194 receives an instruction of a subchannel to be recorded from the user (step S41). When the recording control unit 194 receives an instruction from the user, for example, when the recording start instruction is received, the recording control unit 194 controls the display unit DIS to display a screen for selecting a subchannel to be recorded, The speaker SP is controlled to output a voice guidance prompting selection. In step S41, it is determined whether or not the subchannel designated by the user is the main channel, that is, whether or not the program broadcast on the designated subchannel is the main program. Since the determination method is the same as the method described in the above embodiment, the description is omitted.

  If it is determined in step S42 that the subchannel designated by the user is not the main channel, that is, the program broadcast on the subchannel designated by the user is a subprogram, the process proceeds to step S43. In step S43, control information processing section 180 replaces the control information of the main channel and the control information of the subchannel designated by the user in the TS included in the broadcast wave being received by broadcast wave receiving section 110, The TS with the exchanged control information is stored as recording data. The control information replacement process is the same as that in the above-described embodiment, and a description thereof will be omitted. Thereafter, until it is determined in step S44 that there is an instruction to end the recording, the recording is continued while exchanging the control information of the main channel and the control information of the subchannel designated by the user. If it is determined in step S42 that the subchannel specified by the user is the main channel, that is, the program broadcast on the subchannel specified by the user is the main program, the process proceeds to step S45. Until it is determined in step S46 that there is an instruction to end the recording, the TS of the multi-organized broadcast to be recorded included in the broadcast wave received by the broadcast wave receiving unit 110 is stored in the recording data storage unit 172.

  By the recording process described with reference to FIGS. 5 and 6, the recording program or the subprogram stream designated by the user is stored in the storage unit as the main program. As a default, it will be played and displayed first.

  In the above-described embodiment, the program to be recorded as the main program among the multi-organized programs is determined based on the user's designation. As another embodiment, when a recording instruction is given from the user during viewing of the multi-organized broadcast, a program to be recorded as the main program can be determined according to the viewing frequency of the user. For example, among the programs constituting the multi-organized program, the program having the longest accumulated viewing time by the user can be regarded as a program that the user desires to record and can be recorded as the main program. Hereinafter, this embodiment will be described using a flowchart.

  FIG. 7 is a flowchart showing an example of a recording process for determining a program to be recorded as a main program based on the viewing frequency. The broadcast recording apparatus 100 starts a recording process in response to a recording start instruction from the user. First, the recording control unit 194 stores, in the recording data storage unit 172, the multi-organized broadcast TS to be recorded included in the broadcast wave received by the broadcast wave receiving unit 110 (step S51). At the same time, the measurement unit 160 starts measuring the viewing time of the program being viewed. Thereafter, recording of the program is continued until it is determined in step S53 that there is an instruction to end recording by the user. In the meantime, when the channel is switched between the sub-channels of the multi-organization broadcast, the recording control unit 194 displays the viewing time of the channel before switching measured by the measuring unit 160 together with the information about the channel before switching, viewing frequency information. Is stored in the viewing frequency information storage unit 174. If the viewing time related to the channel before switching has already been stored in the viewing frequency information storage unit 174, the accumulated viewing time obtained by adding the stored viewing time and the latest viewing time is stored (step S52). Moreover, the measurement part 160 starts measurement of the viewing time of the program broadcast on the channel after switching. If the recording control unit 194 determines in step S53 that there is an instruction to end recording, the subchannel with the highest viewing frequency, that is, the cumulative viewing time by the user, is obtained from the viewing frequency information stored in the viewing frequency information storage unit 174. The sub-channel that broadcasts the longest program is extracted (step S54).

  Next, the recording control unit 194 determines whether or not the subchannel extracted in step S54 is the main channel, that is, whether or not the program having the longest accumulated viewing time by the user is the main program ( Step S55). Note that the determination method is the same as that of the above-described embodiment, and thus the description thereof is omitted. If it is determined in step S55 that the subchannel extracted in step S54 is the main channel, that is, the program having the longest accumulated viewing time by the user is the main program, the recording control unit 194 ends the process. To do. If it is determined that the subchannel extracted in step S54 is not the main channel, that is, the program having the longest accumulated viewing time by the user is the subprogram, the process proceeds to step S56. In step S56, the control information processing unit 180 replaces the main channel control information with the sub-channel control information extracted by the recording control unit 194 in step S54 in the TS stored in the recording data storage unit 172. The TS with the exchanged control information is stored as recording data. The control information replacement process is the same as that in the above-described embodiment, and a description thereof will be omitted.

  Note that there may be a case where the user wants to view a program broadcast on a subchannel that is not viewed in real time later. Therefore, the program to be recorded as the main program can be the program with the lowest viewing frequency, not the program with the highest viewing frequency.

  As another embodiment, in order to display the recorded subprogram first at the time of reproduction, there is a method of storing reproduction channel information defining a main channel at the time of reproduction together with recorded data and referring to the reproduction channel information at the time of reproduction. Conceivable. The present embodiment will be described below with reference to the drawings.

  FIG. 8 is a functional block diagram of the broadcast recording apparatus according to this embodiment. The broadcast recording apparatus 100A includes an antenna ANT, a broadcast receiving unit 110, a demultiplexer 120, a video decoder unit 130, a caption decoder unit 140, an audio decoder unit 150, a display unit DIS, a speaker SP, a measurement unit 160, a storage unit 170A, a reproduction channel. An information generation unit 182, a control unit 190A, an input operation unit KEY, and a system bus SB are provided. Further, the storage unit 170A includes a recording data storage unit 172, a viewing frequency information storage unit 174, and a reproduction channel information storage unit. The control unit 190A includes a playback control unit 192 and a recording control unit 194. Here, description of components having the same reference numerals as those of the broadcast recording apparatus 100 in FIG. 1 and having the same functions as those of the broadcast recording apparatus 100 in FIG. 1 is omitted.

  The reproduction channel information generation unit 182 generates reproduction channel information that defines a program to be displayed first during reproduction. The reproduction channel information storage unit 176 stores the reproduction channel information generated by the reproduction channel information generation unit 182. The recording process according to this embodiment will be described with reference to the flowchart of FIG. FIG. 9 is a flowchart showing an example of a recording process according to this embodiment. The user performs a predetermined operation via the input operation unit KEY or the like to reserve recording of the multi-organized program, and information related to the program reserved for recording by the user is stored in the storage unit 170. The broadcast recording apparatus 100 starts the recording process when the start time (broadcast time) of the program reserved for recording is reached. First, based on an instruction from the recording control unit 194, the broadcast wave receiving unit 110 receives a broadcast wave of a multi-organized broadcast including a subchannel reserved for recording (designated) by the user (step S61). The recording control unit 194 stores the TS of the multi-organization broadcast to be recorded included in the received broadcast wave in the recording data storage unit 172 (step S62). Thereafter, in step S63, steps S61 and S62 are repeated until the current time is determined to be a time (end time) set as a time to end the recording, and the program recording is continued. When the recording of the designated program ends (when it is determined that the current time is the end time), the recording control unit 194 determines whether or not the subchannel that broadcasts the program reserved for recording is the main channel, that is, the recording. It is determined whether or not the reserved program is the main program (step S64). Since the determination method is the same as the method according to the above-described embodiment, the description thereof is omitted.

  If it is determined in step S64 that the sub-channel reserved for recording is the main channel, that is, the program broadcast on the sub-channel reserved for recording is the main program, the recording process ends. If it is determined in step S64 that the subchannel reserved for recording is not the main channel, that is, the program broadcast on the subchannel reserved for recording is a subprogram, the process proceeds to step S65. In step S65, reproduction channel information generation unit 182 generates information indicating that the program to be initially displayed as a default at the time of reproduction is a subprogram, and stores the information in reproduction channel information storage unit 176.

  Next, processing during reproduction will be described using a flowchart. FIG. 10 is a flowchart for explaining an example of the reproduction process according to this embodiment. When the reproduction of the multi-organized program recorded by the broadcast recording apparatus 100A is started, the reproduction control unit 192 reads the reproduction channel information stored in the reproduction channel information storage unit 176 (step S71). Next, the reproduction control unit 192 controls the demultiplexer 120 so as to extract only the TSP (program data) of the program to be displayed first as a default specified in the reproduction channel information (step S72). Thereafter, the reproduction control unit 192 controls the decoder units 130 to 150, the display unit DIS, and the speaker SP to reproduce the extracted program data.

  In the present embodiment, the reproduction channel information can be generated not only in the case of reserved recording but also in the case of recording during viewing. In addition, the program specified as the main program in the reproduction channel information can be determined according to the viewing frequency instead of the program specified by the user.

  It is also conceivable that when a single program broadcast on a channel is recorded, the channel starts broadcasting a multi-program (see FIG. 14). In this case, the recording control unit 194 controls the display unit DIS if the recording is being viewed, and displays a screen prompting the selection of the subchannel to be recorded that the multi-organized program has been broadcast on the channel being recorded. The user can select a sub-channel to be recorded as a main program by displaying or outputting a voice guidance prompting selection by controlling the speaker SP. Or as above-mentioned, you may determine the subchannel which should be recorded as a main program based on viewing-and-listening frequency. In addition, a program that is highly related to a single program that was broadcast before the start of the multi program can be recorded as a main program among the programs that constitute the multi program. For example, when a baseball game broadcast on a single program is extended, an event relay is performed that continuously broadcasts the extended baseball game on different channels (subchannels). It is effective when. It is determined whether a program highly related to a single program is broadcast as a multi-program (whether it is event relayed) based on an event group descriptor (event_group_descripter) described in the EIT be able to. Further, in each of the above-described embodiments, when the control information of the main program and the subprogram is replaced, the control information is presented to the user in a selectable manner by a pop-up display or the like. Replacement may be performed.

  As still another embodiment, only the TS of the program to be recorded as the main program among the programs constituting the multi-organized program can be stored in the recording data storage unit 172, so that the used capacity of the storage unit can be reduced.

  The advantages of the present invention will be described again. As described above, according to the broadcast recording apparatus of the present invention, when a recorded multi-organized program is reproduced, a program desired by the user is selected from a plurality of programs constituting the recorded multi-organized program. Can be played first. Therefore, unlike the conventional case, the main program is displayed at the time of reproduction for the user who has recorded the multi-organized program in order to record the sub-program and is not frustrated. Furthermore, since the recording process according to the present invention is only replacement of control information (component_group_id) in accordance with the ARIB regulations, even if the recorded data is moved to a removable medium, the removable medium is transferred to another broadcast recording / receiving device. In this case, a desired program can be reproduced first as a main program.

  Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and corrections based on the present disclosure. Therefore, it should be noted that these variations and modifications are included in the scope of the present invention. For example, functions included in each component, each means, and the like can be rearranged so that there is no logical contradiction, and a plurality of components can be combined into one or divided.

It is a functional block diagram of the broadcast recording apparatus by this invention. It is a flowchart which shows an example of the recording process of the broadcast recording apparatus 100 by this invention. It is a flowchart which shows an example of the recording process of the broadcast recording apparatus 100 by this invention. It is a figure which shows TS of the control information and program which were stored in the memory | storage part 170. FIG. It is a flowchart which shows an example of the recording process of the broadcast recording apparatus 100 by this invention. It is a flowchart which shows an example of the recording process of the broadcast recording apparatus 100 by this invention. It is a flowchart which shows an example of the recording process which determines the program recorded as a main program based on viewing frequency. It is a functional block diagram of the broadcast recording apparatus by one embodiment. It is a flowchart which shows an example of the recording process by one embodiment. It is a flowchart explaining an example of the reproduction | regeneration processing by one embodiment. It is the schematic of the data structure of EIT. It is the schematic of the data structure of a component group descriptor. It is the schematic of the data structure of PMT. Schematic diagram of PMT data structure It is a figure which shows an example of an electronic program guide (EPG) in case a multi organization program exists.

Explanation of symbols

100, 100A Broadcast recording device 110 Broadcast wave receiving unit 120 Demultiplexer 130 Video decoder 140 Subtitle decoder 150 Audio decoder 160 Measuring unit 170, 170A Storage unit 172 Recording data storage unit 174 Viewing frequency information storage unit 176 Playback channel information storage unit 180 Control Information processing unit 182 Playback channel information generation unit 190, 190A Control unit 192 Playback control unit 194 Recording control unit DIS display unit SP speaker KEY input operation unit SB system bus ANT antenna

Claims (2)

A broadcast recording apparatus for digital broadcasting corresponding to multi-organization broadcasting in which a multi-organization program composed of one main program and one or more sub-programs is included in a single stream signal and broadcasted,
A broadcast receiver for receiving the stream signal;
A recording instruction unit for instructing recording in units of programs of the program included in the multi-organized broadcasting;
A storage unit for storing a stream signal including a program instructed to be recorded by the recording instruction unit;
When the program instructed to be recorded by the recording instruction unit is a sub program, the stream signal stored in the storage unit is presented to the user to select whether or not the component_group_id values of the main program and sub program can be switched Then, based on the selection, a processing unit that replaces the value of the component_group_id of the subprogram and the value of the component_group_id of the main program in a component group descriptor in an EIT (Event Information Table) ;
A broadcast recording apparatus comprising: A broadcast recording apparatus for digital broadcasting corresponding to multi-organization broadcasting in which a multi-organization program composed of one main program and one or more sub-programs is included in a single stream signal and broadcasted,
A broadcast receiver for receiving the stream signal;
A recording instruction unit for instructing recording in units of programs of the program included in the multi-organized broadcasting;
When the program instructed to be recorded by the recording instructing unit is a subprogram, in the stream signal including the program instructed to be recorded received by the broadcast receiving unit , the value of component_group_id of the main program and the subprogram A processing unit that presents to the user whether or not replacement is possible and replaces the component_group_id value of the subprogram and the component_group_id value of the main program in a component group descriptor in an EIT (Event Information Table) based on the selection When,
A storage unit for storing a stream signal in which the value of the component_group_id is replaced ;
A broadcast recording apparatus comprising:

Images