JP2002290893A - Digital video-reproducing and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To avoide the occurrence of a pause in dubbing by controlling a dubbing operation in response to an remaining amount in a tape which is mounted on a unit at a recording side in a video-reproducer/recorder. SOLUTION: When a dubbing key for video-recording in an opposite unit and the reproduction time of a master tape is inputted (#1), the remaining amount in the tape for recording in the opposite unit is inquired (#2) and the tape remaining amount is compared with the reproduction time (#3). When equivalent time of the tape remaining amount is larger than the reproduction time of a self unit (YES in #3), a video-recording command is issued to the opposite unit (#4), the completion report of a recording start operation is received (#5), and then, reproduction is started in the self unit (#6). When video-recording is performed in the self unit, the tape remaining amount for recording in the self unit is detected in the same way so that dubbing is performed when the tape remaining amount is more than enough compared with the reproduction time of the opposite unit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape reproducing apparatus for playing back a tape loaded in its own apparatus and dubbing a tape loaded in a DVHS video deck (called a partner apparatus) connected by an IEEE1394 serial bus cable. The present invention relates to a video reproducing / recording apparatus for reproducing a tape loaded in a device and dubbing the tape loaded in the device.

[0002]

2. Description of the Related Art Conventionally, there have been known recording devices for reproducing a tape of a partner device and dubbing the tape on the device itself. Various devices have been devised to improve the usability of the user. . As an example, in a dubbing apparatus for dubbing audio reproduced by a CD player onto an analog cassette tape, when a user inputs a recording time for one side of a tape and the dubbing time approaches the input recording time, that is, a single side of the tape, There is known a method of performing fade-out recording by gradually attenuating the level of a recording signal as the end approaches (see, for example, Japanese Patent No. 2752065). Similarly, when approaching the end of one side of the tape during dubbing and detecting the tape end signal, the level of the recording signal is gradually attenuated and fade-out recording is performed. There is known a dubbing device that re-dubs a song from the beginning of the song (for example, Japanese Patent Publication No.
97485).

[0003]

It is possible to apply such a dubbing device to a DVHS VCR to dub an image reproduced by a partner device to the own device.
At this time, as described above, fade-out recording can be performed from the vicinity of the end of the tape loaded in the own device. However, dubbing is interrupted at the end of the tape of the own device, and subsequent video cannot be dubbed. In particular, it is inconvenient when the user leaves the place and performs dubbing automatically, because the user does not notice that the dubbing is incomplete. Further, since the tape applied to the DVHS video deck is a single-sided recording, the tape cannot be inverted at the end of the tape as in the latter dubbing apparatus.

[0004] The present invention has been made to solve the above-mentioned problem, and it is intended to change the amount of tape loaded from a device connected to a network via an interface bus into a recording device. It is an object of the present invention to provide a video reproducing / recording apparatus in which a dubbing operation is controlled in such a manner that dubbing is interrupted.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a plurality of digital devices are connected to a network via an interface bus so that bidirectional communication between the digital devices can be achieved. Is possible,
Communication means for automatically recognizing the connection status of each digital device when connecting to the network, and each device itself (called its own device)
And the I assigned to another device
Output control means for outputting an operation command for operating the corresponding device with the D information attached thereto, reproducing the tape loaded in the own device, and connecting to the video recording device (the other device) connected via the interface bus. In a digital video playback / recording device compatible with a network system for dubbing on a tape loaded in the same device, a network is connected to a partner device, and an interface bus for the connection is
An IEEE 1394 serial bus, including an operation key for inputting a dubbing command to execute dubbing and a reproduction time of the own device at the time of dubbing, and an output control unit, when a dubbing command is input by a user,
A signal for inquiring about the remaining tape of the partner machine is output via the communication means, and the remaining tape of the partner machine is detected from the reply to this signal, and the remaining tape is longer than the reproduction time inputted by the operation key. Sometimes, it is determined that recording is possible, a recording command is output to the partner device, and after receiving notification of the completion of the recording start operation from the partner device, playback of the own device is started and dubbing is performed.

In this configuration, the own device and the other device are connected by an IEEE 1394 serial bus cable capable of two-way communication, and an operation command is output from the own device to the other device to remotely control the other device. Can be. It is assumed that ID information of the partner device is attached to the operation command, and even when a plurality of digital devices are connected to a network, the partner device to be controlled can be specified. When a dubbing command is input from an operation key by a user's operation, the output control unit firstly executes the communication unit and the IEEE
The tape remaining amount is inquired by running the tape of the partner machine through the 1394 serial bus cable. Then, the other device, ie, the remaining amount of the tape for recording (empty time) is compared with the reproduction time of the own device, ie, the reproducing tape, which is input by the user. Judge that it is possible and execute dubbing. At the time of dubbing, after confirming the start of the recording operation of the other device, by starting playback of the own device,
Since the recording operation of the other device is always performed in advance, the beginning of the dubbing position is not lost. When the remaining tape time is shorter than the reproduction time, dubbing is not accepted by performing a predetermined error display or the like, and the dubbing operation is stopped. In this manner, whether or not dubbing is possible is determined according to the remaining amount of tape, dubbing is accepted only when dubbing is possible, and dubbing is prevented from being interrupted.

Further, according to the invention of claim 2, since a plurality of digital devices are connected to a network via an interface bus, bidirectional communication between the digital devices is enabled. Communication means for automatically recognizing the connection state of a digital device, an operation command for operating each device (referred to as own device), and an operation command for operating a corresponding device by attaching ID information assigned to another device Output control means for outputting a video signal to a video recording device (referred to as a partner device) connected via an interface bus to reproduce a tape and dubbing to a tape loaded in the own device. In a digital video reproducing / recording apparatus, a network is connected to a partner apparatus, and an interface bus for the connection is provided by an I EE1394 is a serial bus,
An operation key is provided for inputting a dubbing command to execute dubbing and a reproduction time of the other apparatus at the time of dubbing, and the output control means detects a remaining tape amount of the own apparatus when a dubbing command is input by a user. However, when the remaining tape time is longer than the playback time input by the operation keys, it is determined that recording is possible, and recording of the own device is started,
A reproduction command is output to the other device to perform dubbing.

In this configuration, the own device and the other device are connected by an IEEE1394 serial bus cable capable of two-way communication, and an operation command is output from the own device to the other device to remotely control the other device. Can be. It is assumed that ID information of the partner device is attached to the operation command, and even when a plurality of digital devices are connected to a network, the partner device to be controlled can be specified. When a dubbing command is input from an operation key by a user's operation, the output control means first detects the remaining tape amount by running the tape of the own device. Then, the own device, ie, the remaining tape for recording, is compared with the reproduction time of the other device, ie, the tape for reproduction, input by the user. As a result, if the remaining tape is longer than the reproduction time, it is determined that recording is possible. And dubbing is performed. When the remaining tape amount is shorter than the reproduction time, dubbing is not accepted and the dubbing operation is stopped, as in the first aspect. In this manner, whether or not dubbing is possible is determined according to the remaining amount of tape, dubbing is accepted only when dubbing is possible, and dubbing is prevented from being interrupted.

According to a third aspect of the present invention, a plurality of digital devices are connected via an interface bus to enable bidirectional communication between the digital devices. A communication means for automatically recognizing the connection state of each device, and an operation command for operating each device itself (referred to as own device) and an operation command for operating the corresponding device by attaching ID information assigned to another device. Digital video reproducing / recording apparatus for reproducing a tape loaded in its own apparatus and dubbing the tape loaded in a video recording apparatus (referred to as a partner apparatus) connected via an interface bus. , The output control means is connected to the partner device via an interface bus, and the output control means The remaining tape is detected from the response to this signal, and if the remaining tape is longer than the playback time of the own device, it is determined that recording is possible, and after the recording command is output to the other device, the This is to start the playback of the machine and perform dubbing.

In this configuration, the own device and the other device are connected by an interface bus capable of bidirectional communication,
The own device can output an operation command to the other device to remotely control the other device. It is assumed that ID information of the partner device is attached to the operation command, and even when a plurality of digital devices are connected to a network, the partner device to be controlled can be specified. At the start of dubbing, the output control means inquires of the remaining tape amount by running the tape of the other machine via the communication means and the interface bus. Then, the remaining device, ie, the remaining tape for recording, is compared with the playback time of the own device, ie, the playback tape, and as a result, if the remaining tape is longer than the playback time, it is determined that recording is possible, and dubbing is executed. Let it.
When the remaining tape amount is shorter than the reproduction time, dubbing is not accepted and the dubbing operation is stopped, as in the first aspect. In this manner, whether or not dubbing is possible is determined according to the remaining amount of tape, dubbing is accepted only when dubbing is possible, and dubbing is prevented from being interrupted.
The above dubbing process is executed when a dubbing command input by a user or a timer dubbing for starting dubbing at a preset time is reserved, and the start time comes.

According to a fourth aspect of the present invention, since a plurality of digital devices are connected via an interface bus, bidirectional communication between the digital devices is enabled. A communication means for automatically recognizing the connection state of each device, and an operation command for operating each device itself (referred to as own device) and an operation command for operating the corresponding device by attaching ID information assigned to another device. Digital video reproducing / recording apparatus for reproducing a tape loaded in a video recording apparatus (referred to as a partner apparatus) connected via an interface bus and dubbing the tape loaded in the own apparatus. , The output control means is connected to the partner device via an interface bus, detects the remaining tape amount of the own device, and determines the remaining tape amount as the reproduction time of the partner device. When larger, it is determined that allows recording, after starting the recording of the own apparatus, and outputs a reproduction instruction to the destination station, and performs dubbing.

In this configuration, the own device and the other device are connected by an interface bus capable of bidirectional communication,
The own device can output an operation command to the other device to remotely control the other device. It is assumed that ID information of the partner device is attached to the operation command, and even when a plurality of digital devices are connected to a network, the partner device to be controlled can be specified. When starting dubbing, the output control means first detects the remaining tape amount by running the tape of its own device. Then, it compares the remaining time of the tape of its own device, ie, the recording tape, with the playback time of the tape of the other device, ie, the playback tape. Let it. When the remaining tape time is shorter than the reproduction time, dubbing is not accepted and the dubbing operation is stopped, as in the second aspect. In this manner, whether or not dubbing is possible is determined in accordance with the remaining amount of tape, dubbing is accepted only when dubbing is possible, and dubbing is prevented from being interrupted. Further, the above-described dubbing process is executed, for example, when a dubbing command input by the user or a timer dubbing start time comes.

According to a fifth aspect of the present invention, in the digital video reproducing / recording apparatus according to the third or fourth aspect, the interface bus is an IEEE 1394 serial bus. In this configuration, the connection between the digital video recorder and the partner device can be easily made.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A network system using a video recorder according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a network system according to the present invention. The network system 1 connects the DVHS video decks 10 and 20 to the IEEE13
It is constructed by connecting via a 94 serial bus cable (hereinafter referred to as IEEE 1394 cable) 2. In addition, each DVHS video deck 10, 20 has T
V monitors 19 and 29 are connected.

Each of the DVHS video decks 10 and 20 is an IE
Information signals and control signals can be transmitted bidirectionally through the EE1394 cable 2 for communication. If control signals are transmitted to other devices in the network system 1,
Other devices can be controlled remotely. For example, DVH
The S video deck 10 (to be the own machine) issues a playback command to the DVHS video deck 20 (to be the other machine) by an I command.
The tape loaded in the DVHS video deck 20 is reproduced by transmitting the data via the IEEE 1394 cable 2, the video signal is acquired through the IEEE 1394 cable 2, and dubbed to the tape loaded in the DVHS video deck 10, It can be displayed on the TV monitor 19.

In the present system 1, the DVHS video decks 10 and 20 are connected via an IEEE 1394 serial bus. Further, various digital devices corresponding to the bus may be connected to perform mutual communication. it can. In a case where a plurality of digital devices are connected as described above, different node IDs are assigned to the devices in order to distinguish and recognize the devices. This node ID
Is given as a new ID at the time of power-on of each device and a bus reset such as addition / deletion of a device. The communication between the devices is distinguished by a carrier in a different frequency band for each node ID corresponding to each device.

FIG. 2 shows a DVHS applied to the present system 1.
1 shows a block diagram of video decks 10 and 20. DVHS
The video deck 10 includes ports 11a and 11b for connecting the IEEE 1394 cable 2, a PHY chip 12 for encoding / decoding a digital signal such as a video signal, and a LINK chip (for discriminating data such as a node ID described later). Communication means, output control means) 13;
A CPU (output control means) 14 for controlling the entire DVHS video deck 10, a memory (storage means) 15 for storing a node ID and a reproduction time of the master tape, and an input for allowing the user to input the reproduction time of the master tape And a key 16. Similarly, the DVHS VCR 20
Ports 21a and 21b, a PHY chip 22, a LINK chip 23, a CPU 24, a memory 25, and an input key 26 are provided. Both ends of the IEEE1394 cable 2 are D
It is connected to the port 11a of the VHS video deck 10 and the port 21a of the DVHS video deck 20, respectively.
The input keys 16 also include dubbing keys (operation keys) for inputting a dubbing command. The dubbing key is provided with a dubbing key for recording on the partner device for inputting a command for recording by the partner device, and a dubbing key for recording on the own device for inputting a command for recording on the own device. The input keys 16 and 26 are usually provided on an input device such as a remote controller, but may be provided on an exterior panel of the DVHS video decks 10 and 20.

Further, the control of the reproduction operation of the DVHS video deck 20 from the DVHS video deck 10 in the present invention is performed as follows. First, a control signal is transmitted from the CPU 14 to the port 11 a via the LINK chip 13 and the PHY chip 12. This control signal includes D
The node ID assigned to the VHS video deck 20 is attached, and the DVID is output via the IEEE 1394 bus cable 2.
The data is transmitted to the port 21a of the HS video deck 20. The DVHS video deck 20 that has received the control signal through the port 21 a further transmits the signal to the LINK chip 23 via the PHY chip 22. Then, the LINK chip 23 recognizes that the node ID attached to the control signal is its own, and transmits this signal to the CPU 24.
To be transmitted. The CPU 24 starts the reproduction operation of the DVHS video deck 20 based on the transmitted control signal, and transmits the obtained video signal to the CPU 14 of the DVHS video deck 10 via the reverse path. The CPU 14 records the received video signal on the loaded tape or displays it on the TV monitor 19. LIN
K chip 23, if the node ID is not its own,
The control signal is returned to the PHY chip 22 and the port 2
1b to another device (not shown) connected via an IEEE 1394 cable. As described above, the DVHS video deck (the other device) that reproduces the data by the node ID
Is designated and controlled, even when three or more DVHS video decks are connected by an IEEE 1394 cable, the other party can be designated and controlled.
The control of the recording operation of the DVHS video decks 10 to 20 is similarly performed.

Next, an automatic dubbing function using the DVHS video deck 10 will be described. This automatic dubbing function is performed by the DVHS
The remote control of the video deck 20 as described above causes the DVHS video deck 20 to perform recording, and reproduces the tape loaded in the DVHS video deck 10 so that the obtained video signal is transmitted to the DVHS video deck 20. This is for automatically dubbing the loaded tape. This automatic dubbing is performed in response to the user pressing a dubbing key (dubbing command) or timer dubbing to start dubbing at a preset time.

For example, when the dubbing key for recording on the other party's machine on the DVHS VCR 10 is pressed by the user's operation and the playback time of the tape of the machine itself is input, the CPU 1
4 stores this playback time in the memory 15 and
A signal is output to the DVHS video deck 20 via the IEEE 1394 cable 2 to inquire about the remaining amount of the tape. Upon receiving this, the DVHS video deck 20 runs the loaded tape, detects the rotation speed of the take-up reel at that time, calculates the remaining tape amount from the change in the rotation speed, and outputs a signal corresponding thereto. A reply is sent to the DVHS video deck 10 via the IEEE1394 cable 2. D
The CPU 14 of the VHS video deck 10 compares the remaining amount of the recording tape of the DVHS video deck 20 thus obtained with the playback time stored in the memory 15 and, if the remaining tape length is greater than the playback time, It determines that the recording is possible, and outputs a recording command to the DVHS VCR 20 to execute dubbing. On the other hand, when the remaining tape amount is shorter than the reproduction time, dubbing is not accepted by performing a predetermined error display or the like. In this manner, whether or not dubbing is possible is determined according to the remaining amount of the recording tape, and dubbing is accepted only when it is determined that dubbing is possible.

FIG. 3 shows a processing procedure of the CPU 14 at the time of the above dubbing. When the dubbing key of the other party's recording is pressed and the user inputs his / her own playback time (# 1)
The reproduction time is stored in the memory 15. Next, IEEE
The tape remaining amount of the partner machine is inquired via the E1394 cable 2 (# 2), and the tape remaining amount is compared with the reproduction time (# 3). As a result, if the remaining tape amount is greater than the reproduction time (YES in # 3), a recording command is issued to the other device (# 4), and recording of the other device is started. Then, after receiving the notification of the completion of the recording start operation from the partner device, the recording operation of the partner device is confirmed (# 5), and the reproduction of the own device is started (# 6). If the remaining tape amount is not greater than the reproduction time (NO in # 3), a predetermined error message indicating "dubbing is impossible" is displayed on the TV monitor 1.
9 is displayed, and the process ends. In this way, the DV
Dubbing is performed only when it is determined that the remaining amount of the recording tape loaded in the HS video deck 20 is sufficient and recording is possible. In step # 2, the remaining tape amount of the other machine to be inquired is based on the IEEE1394 serial bus standard in addition to the one detected based on the change in the rotation speed of the take-up reel. You may use what you have.

In the present system 1, the tape of the DVHS video deck 20 is reproduced by operating the dubbing key of the recording of the own device, and the DVHS video deck 10
It is also possible to dub on a tape. FIG. 4 shows a processing procedure of the CPU 14 at this time. When the dubbing key for own device recording is depressed and the reproduction time of the partner device is input by the user, it is stored in the memory 15 and the reproduction time stored in the memory 15 is inquired (# 11).
Next, the remaining tape amount of the own device is detected (# 12), and this tape remaining amount is compared with the above-mentioned reproduction time (# 13). As a result, if the remaining tape amount> the reproduction time (Y in # 13)
ES), starts recording of the own device (# 14), transmits a playback command to the other device (# 15), starts playback of the other device, and further receives a completion notification of the playback start operation from the other device. To confirm the reproduction operation of the other device (# 1).
6). If the remaining tape time is not greater than the reproduction time (# 1
(NO in 3), a predetermined error message indicating that “dubbing is impossible” is displayed on the TV monitor 19, and the process is terminated. Thus, the DVHS VCR 10
The dubbing is executed only when it is determined that the remaining amount of the recording tape loaded in is sufficient and recording is possible. The playback time of the partner machine is determined by running the playback tape loaded in the partner machine, detecting the remaining amount of the playback tape from the change in the rotation speed of the take-up reel at that time, and determining the remaining tape amount. It may be used as the maximum value of the reproduction time.

As described in detail above, according to the present system 1, from among the devices connected to the network via the interface bus, the remaining amount of the tape loaded in the device on the recording side is previously inquired. Whether dubbing is possible or not is determined according to the remaining amount of the tape, and dubbing is accepted only when dubbing is possible, so that it is possible to avoid interruption during dubbing. If it is determined that dubbing is not possible in the above, a predetermined error message is displayed on the TV monitor 19, and the user who sees the message can change the recording tape to one that can record for a longer time or play the master tape. If the time is reduced, dubbing without interruption can be performed. Also, # 5 in FIG. 3 and # 16 in FIG.
As shown in (2), at the time of dubbing, since the notification indicating the operation state of the partner device is received, if the operation state of the partner device learned thereby is displayed on the TV monitor 19, the user can By looking at the TV monitor 19 of the own device, it is possible to confirm the state of the remote device remotely controlled.

The present invention is not limited to the configuration of the above-described embodiment, but can be variously modified. For example, a partner device connected to a network may connect a plurality of video decks. In this case, it is possible to dub from a plurality of master tapes to a plurality of recording tapes by remote control from the own device. A determination is made as to whether or not it is. In this case, it is not necessary to change the tapes during dubbing, so that dubbing is automatically performed even if the user is away from the place.

Further, depending on the DVHS video deck,
At the time of recording, the time counter value and the content are
Some of them have a function of recording on a tape as C (Table Of Contents) information, but when inquiring about the reproduction time of the reproduction tape, the TOC information may be referred to. Further, the process of receiving the notification in # 5 shown in FIG. 3 or # 16 shown in FIG. 4 and reconfirming the operation state of the partner device may be omitted.

Further, the digital equipment connected to the network by the IEEE 1394 cable 2 is not limited to the DVHS video deck, but may be a digital video camera represented by a handycam or the like. Also, D
VHS VCRs 10 and 20 are TV monitors 19 and 2
9 may be integrated.

[0027]

As described above, according to the first aspect of the present invention,
When recording on the other device, check the remaining amount of tape for recording loaded in the other device before playing back the device, and judge whether dubbing is possible or not according to the remaining amount and the playback time of the device. ,
Dubbing is accepted only when it is determined that dubbing is possible,
On the other hand, when it is determined that dubbing is impossible because the remaining tape amount is small, dubbing is not accepted and dubbing is stopped by performing a predetermined error display or the like, so that dubbing can be prevented from being interrupted. In addition, by starting the reproduction of the own device after confirming the start of the recording operation of the partner device, the recording operation of the partner device is always performed first, so that the leading portion of the dubbing portion is not missing.

According to the second aspect of the present invention, when a recording operation is performed on the own device, the remaining amount of the recording tape loaded in the own device and the reproduction time of the other device are checked before performing the recording on the own device. It determines whether dubbing is possible or not according to the remaining amount and the playback time, and accepts dubbing only when it is determined that dubbing is possible.
When it is determined that dubbing is impossible due to the small amount of tape, dubbing is not accepted by performing a predetermined error display and the dubbing operation is stopped, so that the dubbing can be prevented from being interrupted. Also, by starting the playback of the own device after outputting the recording command to the partner device, the recording operation of the partner device is performed in advance, so that
There is little possibility that the leading portion of the dubbing portion is missing.

According to the third aspect of the present invention, when a recording operation is performed by the partner device, the remaining amount of the recording tape loaded in the partner device is checked before the reproduction of the own device, and the remaining amount and the own device are checked. Determine whether dubbing is possible or not according to the playback time, and accept dubbing only when it is determined that dubbing is possible, while, when it is determined that the tape remaining amount is small and dubbing is not possible, perform a predetermined error display, etc. Since dubbing is not accepted and the dubbing operation is stopped, it is possible to avoid interruption during dubbing. In addition, by outputting the recording command to the partner device and starting playback of the own device,
Since the recording operation of the other device is performed in advance, there is little possibility that the leading portion of the dubbing portion is missing.

According to the fourth aspect of the present invention, when a recording operation is performed on the own device, the remaining amount of the recording tape loaded in the own device and the reproduction time of the other device are checked before performing the recording on the own device. It determines whether dubbing is possible or not according to the remaining amount and the playback time, and accepts dubbing only when it is determined that dubbing is possible.
When it is determined that dubbing is impossible due to the small amount of tape, dubbing is not accepted by performing a predetermined error display and the dubbing operation is stopped, so that the dubbing can be prevented from being interrupted. Also, by starting the playback of the own device after outputting the recording command to the partner device, the recording operation of the partner device is performed in advance, so that
There is little possibility that the leading portion of the dubbing portion is missing.

According to the fifth aspect of the present invention, it is possible to easily connect the own device to another device. With this, the IEEE
The so-called Hot Plug In and Plug & Play (Plug & Pla) of the E1394 cable
The function of y) can be provided, and user convenience can be improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a connection state of each DVHS video deck in a network system according to an embodiment of the present invention.

FIG. 2 is a block diagram of a DVHS video deck used in the system as its own device and a partner device.

FIG. 3 is an exemplary flowchart showing an operation procedure of a CPU when the DVHS VCR is a playback side during automatic dubbing.

FIG. 4 is an exemplary flowchart showing the operation procedure of the CPU when the DVHS VCR is on the recording side during automatic dubbing.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Network system 2 IEEE1394 cable 10 DVHS video deck (video recording device: own machine) 13 LINK chip (communication means, output control means) 14 CPU (output control means) 15 Memory (storage means) 16 Input keys (operation keys) 20 DVHS video deck (video playback device: partner device)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/92 H04N 5/92 H 5D103 F-term (Reference) 5C018 AA04 AB09 AC00 5C053 FA15 FA21 GB40 JA22 JA30 LA15 5D044 AB05 AB07 BC01 CC03 DE38 EF05 FG18 GK12 HL02 HL07 5D077 AA08 BB18 CA02 DC03 EA35 FA10 5D102 AB11 AC02 AC05 AC27 AD11 HC40 5D103 AB05 AC02 AC05 KA04 KA16 KA76

Claims (5)

[Claims] 1. A plurality of digital devices are connected to a network via an interface bus, thereby enabling bidirectional communication between the digital devices. When the network is connected, the connection status of each digital device is changed. Communication means for automatically recognizing, and output control means for outputting an operation command for operating each device by attaching an operation command for operating each device itself (called own device) and ID information assigned to another device. Digital video playback / recording compatible with a network system for playing back a tape loaded in its own device and dubbing the tape loaded in a video recording device (called a partner device) connected via the interface bus. The device is connected to a partner device via a network, and an interface bus for the connection is connected to an IEEE 1394 device. A real bus, together with a dubbing command to execute the dubbing, an operation key for inputting a reproduction time of the own device at the time of dubbing, the output control means, when a user inputs the dubbing command, A signal for inquiring of the remaining tape of the other machine is output via the communication means, and the remaining tape of the other machine is detected from the reply to this signal, and the remaining tape is used as the reproduction time inputted by the operation key. If it is larger, it is determined that recording is possible, a recording command is output to the other device, and after receiving notification of the completion of the recording start operation from the other device, playback of the own device is started and dubbing is performed. Digital video playback / recording device compatible with network system. 2. When a plurality of digital devices are connected to a network via an interface bus, bi-directional communication between the digital devices is enabled, and the connection status of each digital device is changed at the time of the network connection. Communication means for automatically recognizing, and output control means for outputting an operation command for operating each device by attaching an operation command for operating each device itself (called own device) and ID information assigned to another device. Digital video playback / recording compatible with a network system for playing back a tape loaded in a video recorder (referred to as a partner device) connected via the interface bus and dubbing the tape loaded in the own device. The device is connected to a partner device via a network, and an interface bus for the connection is connected to an IEEE 1394 device. A real bus, together with a dubbing command to execute the dubbing, comprises an operation key for inputting a reproduction time of a partner device at the time of dubbing, the output control means, when a user inputs the dubbing command, Detects the tape remaining amount of the own device, and when the remaining tape amount is longer than the reproduction time input by the operation keys, determines that recording is possible, starts recording of the own device, and issues a reproduction command to the partner device. A digital video playback / recording apparatus compatible with a network system, which performs output and dubbing. 3. When a plurality of digital devices are connected via an interface bus, bidirectional communication between the digital devices is enabled, and the connection status of each digital device is automatically set at the time of the connection. And an output control means for outputting an operation command for operating the corresponding device by attaching an operation command for operating each device itself (referred to as own device) and ID information assigned to another device. A digital video playback / recording apparatus for playing back a tape loaded in its own device and dubbing a tape loaded in a video recording device (referred to as a partner device) connected via the interface bus; Connected via an interface bus, wherein the output control means outputs a signal for inquiring about the remaining tape amount of the other device via the communication means. From the response to this signal, the remaining tape amount of the other device is detected. If the remaining tape amount is longer than the playback time of the own device, it is determined that recording is possible, and after the recording command is output to the other device, the playback of the own device is performed. A digital video playback / recording device for starting dubbing. 4. When a plurality of digital devices are connected via an interface bus, bi-directional communication between the digital devices is enabled, and the connection status of each digital device is automatically set at the time of the connection. And an output control means for outputting an operation command for operating the corresponding device by attaching an operation command for operating each device itself (referred to as own device) and ID information assigned to another device. A digital video playback / recording device for reproducing a tape loaded in a video recording device (referred to as a partner device) connected via the interface bus and dubbing the tape loaded in the own device; Connected via an interface bus, the output control means detects the remaining tape amount of the own device, and when the remaining tape amount is longer than the reproduction time of the partner device, The was determined to be recorded, after starting the recording of the own apparatus, and outputs a reproduction instruction to the destination station, a digital video reproducing / recording apparatus and performing dubbing. 5. The method according to claim 1, wherein the interface bus is an IEEE bus.
4. A 1394 serial bus.
Or a digital video playback / recording device according to claim 4.