JP2000101915A - Video reproducing device, video/audio reproducing device and video/audio recording and reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce video image of only an arbitrary program from among a plurality of programs by displaying only a video signal of a designated program through magnification among video signals of a plurality of the programs included in reproduction signals. SOLUTION: A multi-screen processing circuit 162 generates a video signal, that is used to display the video image of a program A whose horizontal direction is reduced to 1/2 on the left side of a screen and to display the video image of a program B, whose horizontal direction is reduced to 1/2 on a right side of the screen. When the user desires to view only the program A, an AV switch 161 selects only the audio signal of the program A from among left and right channel audio signals fed from a 4th audio changeover circuit 43 and allows a speaker 63 to sound only the audio signal of the program A. Furthermore, a video reproduction signal from a 1st video input terminal 41 is fed to the multi-screen processing circuit 162, where only the video signal of the program A from among video signals of the programs A and B included in the video reproduction signal is magnified twice in the horizontal direction and outputted on a monitor 64.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a video reproducing apparatus,
The present invention relates to a video / audio reproduction device and a video / audio recording / reproduction device.

[0002]

2. Description of the Related Art FIG. 11 shows a conventional two-screen television. In this two-screen television, five video / audio signal generation units are provided.

The first video / audio signal generating section includes a first terrestrial tuner (TV tuner) 11 and a first video / audio demodulation circuit 1 to which an output of the first terrestrial tuner 11 is sent.
2. It comprises a first audio switching circuit 13 to which an audio signal obtained by the first video / audio demodulation circuit 12 is sent. The first video signal obtained by the first video / audio demodulation circuit 12 and the first audio signal selected by the first audio switching circuit 13 are sent to the AV switch 61.

[0004] A second video / audio signal generator includes a second terrestrial tuner 21, a second video / audio demodulation circuit 22 to which the output of the second terrestrial tuner 21 is sent, and a second video / audio demodulator 22.
It comprises a second audio switching circuit 23 to which the audio signal obtained by the audio demodulation circuit 22 is sent. The second video signal obtained by the second video / audio demodulation circuit 22 and the second video signal selected by the second audio switching circuit 23
Is sent to the AV switch 61.

A third video / audio signal generating section includes a BS tuner 31, a third video / audio demodulation circuit 32 to which the output of the BS tuner 31 is sent, and a third video / audio demodulation circuit 32
A third audio switching circuit 33 to which the audio signal obtained by the above is sent. The third video signal obtained by the third video / audio demodulation circuit 32 and the third audio signal selected by the third audio switching circuit 33 are A
It is sent to the V switch 61.

The fourth video / audio signal generating section is provided with a first video input terminal 41, a first audio input terminal 42, and a fourth audio / video signal to which the audio signals input to the first audio input terminal 42 are sent.
The audio switching circuit 43 of FIG. The fourth video signal input to the first video input terminal 41 and the fourth audio signal selected by the fourth audio switching circuit 43 are
It is sent to the AV switch 61.

[0007] The fifth video / audio signal generating section is provided with a second video input terminal 51, a second audio input terminal 52, and a fifth audio / video signal to which the audio signal input to the second audio input terminal 52 is sent.
The audio switching circuit 53 of FIG. The fifth video signal input to the second video input terminal 51 and the fifth audio signal selected by the fifth audio switching circuit 53 are:
It is sent to the AV switch 61.

The AV switch 61 selects and outputs two video / audio signals from the five video / audio signals. One of the two selected video / audio signals is called a main video signal and a main audio signal,
The other video / audio signal is called a sub-video signal and a sub-audio signal.

The main video signal selected by the AV switch 61 is sent to a two-screen processing circuit 62 and to a video output terminal of a first monitor output terminal. The sub video signal selected by the AV switch 61 is sent to the two-screen processing circuit 62.

The main audio signal selected by the AV switch 61 is sent to a speaker 63 and also to an audio output terminal of a first monitor output terminal. AV switch 6
The sub audio signal selected by 1 is sent to the earphone 65.

A two-screen processing circuit 62 compresses or thins out one or both of the main video and the sub-video to simultaneously display two programs called "two screens" or "picture-in-picture". A two-screen video signal is generated.

The two-screen video signal output from the two-screen processing circuit 62 is sent to a monitor 64 and to a video output terminal of a second monitor output terminal.

Each audio switching circuit, AV switch 61 and two-screen processing circuit 62 are controlled by a CPU 70.

In such a two-screen television, what is connected to the VCR is the first monitor output terminal or the second monitor output terminal. When the first monitor output terminal is connected to a video deck, the main video signal and main audio signal selected by the AV switch 61 are recorded on a video tape. When the second monitor output terminal is connected to a video deck, a two-screen video signal and a main audio signal are recorded on a video tape.

Therefore, a combination of a main video signal and a main audio signal or a combination of a two-screen video signal and a main audio signal can be recorded. When the combination of the main video signal and the main audio signal is recorded on a video tape, the main video and the main audio can be reproduced.
When the two-screen video signal and the main audio signal are recorded on a video tape, the two-screen video signal and the main audio can be reproduced. However, it is not possible to reproduce only the sub video signal and the sub audio signal.

That is, conventionally, even if it is possible to record a multi-screen video signal obtained by synthesizing reduced video of each video signal of a plurality of programs so that the video of the plurality of programs is incorporated into one screen, However, it was not possible to reproduce a video consisting only of an arbitrary program among the plurality of programs.

[0017]

SUMMARY OF THE INVENTION The present invention relates to a recording medium on which a multi-screen video signal is recorded in which reduced video of each video signal of a plurality of programs is combined so that the video of the plurality of programs is incorporated into one screen. It is an object of the present invention to provide a video reproducing apparatus capable of reproducing a video of only an arbitrary program among these plural programs based on a reproduced signal from the program.

Also, the present invention provides a multi-screen video signal obtained by combining reduced images of the video signals of the plurality of programs so that the video of the plurality of programs is incorporated into one screen, and two of the plurality of programs. On the basis of a reproduction signal from a recording medium on which an audio signal for a program is recorded, a video of only one of the plurality of programs and an audio of only one of the two programs are reproduced. It is an object of the present invention to provide a video / audio reproduction device capable of reproducing.

Further, the present invention provides a multi-screen video signal obtained by combining reduced images of the video signals of the plurality of programs so that the video of the plurality of programs is incorporated into one screen, and two of the plurality of programs. An audio signal for a program can be recorded on a recording medium, and based on a reproduction signal from the recording medium, an image of only one arbitrary program of the plurality of programs and a video of the two programs can be recorded. It is an object of the present invention to provide a video / audio reproduction device that can reproduce audio of only one arbitrary program.

[0020]

A video reproducing apparatus according to the present invention records a multi-screen video signal obtained by synthesizing reduced video of each video signal of a plurality of programs so that the video of the plurality of programs is incorporated in one screen. Input terminal for inputting a reproduction signal from the selected recording medium, and among the video signals of a plurality of programs included in the reproduction signal input to the input terminal, only the video signal of one designated program is enlarged. And output means.

The video / audio reproducing apparatus according to the present invention comprises:
A recording in which a multi-screen video signal obtained by synthesizing reduced video of each video signal of the plurality of programs so that the video of the plurality of programs is incorporated in the screen, and an audio signal for two of the plurality of programs are recorded An input terminal for inputting a reproduction signal from a medium, and among a plurality of video signals contained in the reproduction signal input to the input terminal, only a video signal of a designated one program is enlarged and output. Means, and means for selecting and outputting an audio signal of one designated program from among audio signals of two programs included in the reproduction signal input to the input terminal. .

The video / audio recording / reproducing apparatus according to the present invention reduces and combines the video signals of the plurality of programs so that the video of the plurality of programs is incorporated in one screen.
Means for generating a multi-screen video signal, an output terminal for outputting the multi-screen video signal and an audio signal for two of the plurality of programs, a multi-screen video signal and audio output from the output terminal Input terminal for inputting a reproduction signal from a recording medium on which a signal has been recorded, and a video signal of one specified program among video signals of a plurality of programs included in the reproduction signal input to the input terminal Means for enlarging and outputting only an audio signal, and means for selecting and outputting an audio signal of one designated program among audio signals of two programs included in the reproduction signal input to the input terminal. It is characterized by having.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

[1] Description of First Embodiment

Hereinafter, a first embodiment of the present invention will be described with reference to FIGS.

FIG. 1 shows the configuration of a two-screen television. In FIG. 1, the same components as those in FIG. 11 are denoted by the same reference numerals, and the description thereof will be omitted.

This two-screen television has a function of outputting a two-screen video signal including video signals of two programs and an audio signal of these two programs as one monitor output, and a video recording the monitor output. A function of reproducing video and audio for each program based on a reproduction signal from a tape.

In the two-screen television of FIG. 1, a multi-screen processing circuit 162 is used instead of the two-screen processing circuit 62 of FIG.

Each of the audio switching circuits 13, 23, 33,
At 43 and 53, if the input audio signal is a stereo audio signal, it is converted to a normal audio signal. If the input audio signal is an audio multiplexed audio signal, a desired audio mode is selected. Is entered.

The main video signal selected by the AV switch 161 is sent to the multi-screen processing circuit 162,
It is sent to the video output terminal of the monitor output terminal. The sub video signal selected by the AV switch 161 is sent to the multi-screen processing circuit 162.

The main audio signal (two normal systems) selected by the AV switch 161 is sent to the speaker 63 and to the audio output terminal of the first monitor output terminal. One of the main audio signals (normal two systems) selected by the AV switch 161 is sent to the left audio output terminal of the second monitor output terminal.

The sub audio signal (two normal systems) selected by the AV switch 161 is sent to the earphone 65. Also, one of the sub audio signals (two normal systems) selected by the AV switch 161 is sent to the right audio output terminal of the second monitor output terminal.

The multi-screen processing circuit 162 has a function of enlarging / reducing a screen and a video signal reduced for each program by one.
One having a function to be incorporated in the screen is used.
The video signal output from the multi-screen processing circuit 162 is sent to the monitor 64 and to the video output terminal of the second monitor output terminal.

Each audio switching circuit, AV switch 161 and multi-screen processing circuit 162 are controlled by CPU 170.

FIG. 2 shows an example of the multi-screen processing circuit 162.

The video (main video) of the program A is supplied to the A / D conversion circuit 112 via the first sync separation / clamp circuit 111.
And digitized, and then written to the first memory 114. The sampling clock of the A / D conversion circuit 112 and the write clock of the first memory 114 are generated by the first PLL circuit 113. First
The synchronization signal obtained by the synchronization separation / clamp circuit 111 is sent to the CPU 170.

The writing and reading of the first memory 114 are controlled by the CPU 170. The video data read from the first memory 114 is sent to the first filter 115, and after being subjected to, for example, horizontal and vertical filtering, is sent to the selector 131.

The video (sub-video) of the program B is supplied to an A / D conversion circuit 122 via a second synchronization separation / clamp circuit 121.
And digitized, and then written to the second memory 124. The sampling clock of the A / D conversion circuit 122 and the write clock of the second memory 124 are generated by the second PLL circuit 123. Second
The synchronization signal obtained by the synchronization separation / clamp circuit 121 is sent to the CPU 170.

The writing and reading of the second memory 124 are controlled by the CPU 170. The video data read from the second memory 124 is sent to the second filter 125, and after being subjected to, for example, horizontal and vertical filtering, is sent to the selector 131.

Filters 115 and 125 and selector 1
31 is controlled by the CPU 170. Selector 1
Reference numeral 31 denotes video data from the first filter 115 (video data corresponding to the main video) and video data from the second filter 125 (video data corresponding to the sub video) based on a command from the CPU 170. Select one of and output. The video data output from the selector 131 is converted into an analog video signal by the D / A conversion circuit 132 and output.

The control of reading video data from the memories 114 and 124 will be described.

As shown in FIG. 3, the video data is written to the memory such that the column address of the memory matches the vertical direction of the video data and the row address of the memory matches the horizontal direction of the video data.

When every other row address is read out from the memory, an image reduced to one half in the horizontal direction is obtained as shown in FIG.

The writing speed of the row address only is 2
When the image is read at double speed, an image reduced in half in the horizontal direction is obtained as shown in FIG.

When the row address is read at twice the writing speed and every other column address is read, as shown in FIG. 6, one row address is read in the horizontal and vertical directions.
/ 2 is obtained.

When the row address is read out twice, FIG.
As shown in FIG. 7, an image enlarged twice in the horizontal direction is obtained. In this case, by taking the average of the video data read second and the video data read next (perform horizontal filtering), it is possible to make the horizontal image less noticeable. it can.

If both the row address and the column address are read out twice, an image enlarged twice in the horizontal and vertical directions is obtained as shown in FIG. In this case, by performing the filtering in the horizontal direction and the vertical direction, it is possible to make the roughness of the image in the horizontal direction and the vertical direction less noticeable.

By performing the above-described read control, the video data written in the memory 114 or 124 can be reduced or enlarged.

Here, the horizontal direction is に on the left side of the screen.
The main video (the video of the program A) reduced in size to the sub video (the video of the program B) in which the horizontal direction is reduced to half on the right side of the screen
A video signal for displaying
Is generated by

In such a two-screen television, what is connected to the VCR is the first monitor output terminal or the second monitor output terminal.

When the first monitor output terminal is connected to a video deck, the main video signal (the video signal of program A) and the main audio signal (the audio signal of program A) selected by the AV switch 161 are converted to a video tape. Will be recorded.

When the second monitor output terminal is connected to a video deck, the main video (video of program A) whose horizontal direction is reduced by half on the left side of the screen and the horizontal direction is displayed on the right side of the screen. The video signal for displaying the sub-picture (video of program B) reduced to 1/2, the audio signal of program A (normal 1 system), and the audio signal of program B (normal 1 system) are video tapes. Will be recorded.

That is, when recording is performed by connecting the second monitor output terminal to the VCR, the horizontal direction is 1 /
The video signal of the program A reduced to 2, the video signal of the program B reduced in the horizontal direction to １ ／, the audio signal of the program A, and the audio signal of the program B are recorded on a video tape.

In this two-screen television, the horizontal direction is １ ／.
Based on the video signal of the program A, the video signal of the program B, the audio signal of the program A, and the audio signal of the program B in which the horizontal direction is reduced to 、. It is possible to reproduce video / audio of only program A or video / audio of only program B.

That is, the reproduction signal from the video tape is input to the video / audio input terminal. For example, a reproduced video signal from the video tape is input to a first video input terminal 41 and a reproduced audio signal is input to a first audio input terminal 42.

When the user wants to view only program A, the AV switch 161 selects only the audio signal for program A from the left and right audio signals sent from the fourth audio switching circuit 43. Thus, only the audio signal for program A is output from speaker 63.

Further, the first switch is set by the AV switch 161.
Is transmitted to the multi-screen processing circuit 162 from the video input terminal 41. Then, the multi-screen processing circuit 162 enlarges only the video signal of the program A out of the video of the program A and the program B included in the video reproduction signal by a factor of 2 in the horizontal direction and outputs it to the monitor 64.

When the user wants to view only the program B, the AV switch 161 selects only the audio signal for the program B from the left and right audio signals sent from the fourth audio switching circuit 43. Thus, only the audio signal for the program B is output from the speaker 63.

The AV switch 161 controls the first
Is transmitted to the multi-screen processing circuit 162 from the video input terminal 41. Then, the multi-screen processing circuit 162 enlarges only the video signal of the program B out of the video of the program A and the program B included in the video reproduction signal by a factor of 2 in the horizontal direction, and outputs it to the monitor 64.

[2] Description of Second Embodiment Hereinafter, a second embodiment of the present invention will be described with reference to FIG. In FIG. 9, the same as FIG.
The same reference numerals are given and the description is omitted.

Also in this two-screen television, a function of outputting a two-screen video signal including video signals of two programs and an audio signal of these two programs as one monitor output, and the monitor output is recorded. A function of reproducing video and audio for each program based on a reproduction signal from a video tape.

In the two-screen television shown in FIG. 9, no audio switching circuit is provided in each video / audio signal generating section.

In this dual-screen television, a main audio signal (a normal system of the audio signal of program A) and a sub audio signal (a normal system of the audio signal of program B) are respectively supplied to the left of the second monitor output terminal. To supply the audio output terminal and the right audio output terminal, an audio switching circuit 8 is provided before the left audio output terminal and before the right audio output terminal of the second monitor output terminal.
1, 82 are provided.

When a two-screen video signal including video signals of two programs and an audio signal of these two programs are output to the second monitor output terminal, stereo audio is output from the speaker 63 and the earphone 65. Speaker 6 so that the user can select
An audio switching circuit 8 is provided before the stage 3 and before the earphone 65.
3, 84 are provided.

In this two-screen television, one of the main video and sub-video selected by the AV switch 161 and the two-screen video generated by the multi-screen processing circuit 162 is selected and displayed on the monitor 64. for,
A changeover switch 91 is provided on the monitor 64.

Each of the audio switching circuits 81 to 84, the AV switch 161, the multi-screen processing circuit 162, and the switching switch 91
Is controlled by the CPU 170.

The operation for outputting the two-screen video signal including the video signals of the two programs and the audio signal of these two programs to the second monitor output terminal, and the operation from the video tape on which the monitor outputs are recorded The operation of reproducing video and audio for each program based on the reproduction signal is the same as in the first embodiment, and a description thereof will be omitted.

[3] Description of Third Embodiment Hereinafter, a third embodiment of the present invention will be described with reference to FIG.

FIG. 10 shows a function of outputting, as one monitor output, a multi-screen video signal including video signals of two to four programs and audio signals of two of the plurality of programs. 1 shows a configuration of a video / audio recording / reproducing apparatus having a function of reproducing a video for each program based on a reproduction signal from a video tape on which a monitor output is recorded.

This video / audio recording / reproducing apparatus has five video / audio signal generating units.

The first to fourth video / audio signal generators are:
One digital tuner 200 (BS or CS digital tuner) is shared. The first to fourth video / audio signal generating units are respectively provided with digital tuners 20.
For example, from the “multi-angle channel” of 4 channels included in the transport stream from 0 to 1
Demultiplexers 211, 221, 231, which extract and separate video data and audio data for two channels,
241, demultiplexers 211, 221, 231, 2
Video decoders 212, 222, 232, 242 for demodulating the video data obtained by 41 and audio decoders 213, 223, 2 for demodulating the audio data obtained by the demultiplexers 211, 221, 231, 241.
33, 243 are provided.

The first to fourth video signals and the first to fourth audio signals generated from the first to fourth video / audio signal generators are sent to the AV switch 261.

The fifth video / audio signal generating section includes a video input terminal 251, an audio input terminal 252, and an audio input terminal 2
An audio switching circuit 25 to which an audio signal input to 52 is sent
3 is comprised. The fifth video signal input to the video input terminal 251 and the fifth audio signal selected by the audio switching circuit 253 are sent to the AV switch 261.

When a multi-screen video is generated based on the video from the first to fourth video / audio signal generators, the AV switch 261 operates the first to fourth video signals (video signals of four programs). ) And, for example, the first and second audio signals are selected from the first to fourth audio signals.

Here, the first video signal is referred to as a main video signal, the second video signal is referred to as a first sub video signal, the third video signal is referred to as a second sub video signal, and the fourth video signal is referred to as a fourth video signal. The signal is referred to as a third sub-video signal. Further, the first audio signal is referred to as a main audio signal, and the second audio signal is referred to as a sub audio signal.

The main video signal and the first to third sub video signals selected by the AV switch 261 are sent to the multi-screen processing circuit 262. The multi-screen processing circuit 262, for example, converts the video signal of each program by １ ／ in the horizontal and vertical directions.
And generates a multi-screen video signal such that the video of each program is displayed in an area obtained by dividing one screen into four. The obtained multi-screen video signal is sent to the video output terminal of the second monitor output terminal.

The main video signal selected by the AV switch 261 is also sent to the video output terminal of the first monitor output terminal. The main audio signal selected by the AV switch 261 is sent to the audio output terminal of the first monitor output terminal and to the audio switching circuit 281.

The audio switching circuit 281 converts the input audio signal into a normal one-system audio signal if the input audio signal is a stereo audio signal and outputs the signal. If the input audio signal is an audio multiplexed audio signal, it outputs a desired audio mode. Is selected and output as a normal one-system audio signal. The audio signal output from the audio switching circuit 281 is sent to the audio switch 291.

The sub audio signal selected by the AV switch 261 is sent to the audio switching circuit 282. The audio switching circuit 282 converts the input audio signals of the two left and right channels into stereo audio signals and converts them into a normal one-system audio signal, and outputs the signal. The input audio signals of the two left and right channels are audio multiplexed audio signals. For example, a desired audio mode is selected and output as one system of audio signal. Audio switching circuit 28
The audio signal output from 2 is sent to the audio switch 291.

The audio switch 291 selects either the left or right main audio system or the outputs of the two audio switching circuits 281 and 282 (one normal main audio signal system and one normal auxiliary audio signal system). 2 Output to the audio output terminal of the monitor output terminal.

AV switch 261, each audio switching circuit 25
3, 281 and 282, the audio switch 291 and the multi-screen processing circuit 262 are controlled by the CPU 270.

In such a video / audio recording / reproducing apparatus, what is connected to the video deck is the first monitor output terminal or the second monitor output terminal. When the first monitor output terminal is connected to a video deck, the main video signal and main audio signal selected by the AV switch 261 are recorded on a video tape. When the second monitor output terminal is connected to the VCR with the audio switch 291 selecting the output (main audio signal and sub audio signal) of the two audio switching circuits 281 and 282, the main audio signal and sub audio signal are output. The audio signal and the multi-screen video signal output from the multi-screen processing circuit 62 are recorded on a video tape.

That is, when recording is performed by connecting the second monitor output terminal to the VCR, four programs A, B, C,
The video signal of D, the audio signal of program A, and the audio signal of program B are recorded on a video tape.

In this video / audio recording / reproducing apparatus, four programs A and A whose horizontal and vertical directions are reduced to 1/4
B, C, D video signal, program A audio signal and program B
It is possible to reproduce video / audio of only program A, video / audio of program B only, video of program C only, or video of program D only, based on the reproduction signal of the video tape on which the audio signal of Become.

That is, the reproduction signal from the video tape is input to the video / audio input terminals 251 and 252.

When it is desired to reproduce only the program A, the AV switch 261 allows only the audio signal for the program A to be selected from the two left and right audio signals sent from the audio switching circuit 253, and the audio switch 291 is turned on. Via the second monitor output terminal (audio output terminal).

The AV switch 261 allows the video reproduction signal from the video input terminal 251 to be transmitted to the multi-screen processing circuit 2.
Send to 62. Then, the multi-screen processing circuit 262 enlarges only the video signal of the program A out of the four programs A, B, C, and D included in the video reproduction signal by two times in the horizontal and vertical directions. Output to the second monitor output terminal (video output terminal).

Then, if the video and audio output from the second monitor output terminal are input to an external input terminal such as a television, the video and audio for program A can be viewed on the television.

When reproducing the video and audio of only the program B, only the audio signal of the program B is selected and output to the audio output terminal of the second monitor output terminal. What is necessary is just to enlarge the image twice in the vertical direction and output it to the video output terminal of the second monitor output terminal.

In the case of reproducing the video of only the program C, only the video signal of the program C is enlarged twice in the horizontal and vertical directions and output to the second monitor output terminal (video output terminal). Good. When reproducing only the video of the program D, only the video signal of the program D may be doubled in the horizontal and vertical directions and output to the second monitor output terminal (video output terminal). .

[0091]

According to the present invention, a multi-screen video signal is recorded from a recording medium on which a reduced video of each video signal of the plurality of programs is synthesized so that the video of the plurality of programs is incorporated into one screen. Based on the reproduction signal, it is possible to reproduce the video of only any one of the plurality of programs.

Further, according to the present invention, a multi-screen video signal obtained by combining reduced images of the video signals of the plurality of programs so that the video of the plurality of programs is incorporated into one screen, Based on a reproduction signal from a recording medium on which audio signals for the two programs are recorded, an image of only one of the plurality of programs and an audio of only one of the two programs are recorded. And will be able to play.

Further, according to the present invention, a multi-screen video signal obtained by synthesizing reduced images of the video signals of the plurality of programs so that the video of the plurality of programs is incorporated into one screen, An audio signal for two programs can be recorded on a recording medium, and based on a reproduction signal from the recording medium, an image of only one arbitrary program of the plurality of programs and a video of the two programs can be recorded. Any one of them
It becomes possible to reproduce the sound of only the program.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a two-screen television according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example of a multi-screen processing circuit.

FIG. 3 is a schematic diagram illustrating a method of writing video data to a memory.

FIG. 4 is a schematic diagram illustrating a control method for reading video data from a memory.

FIG. 5 is a schematic diagram showing a method of controlling reading of video data from a memory.

FIG. 6 is a schematic diagram illustrating a control method for reading video data from a memory.

FIG. 7 is a schematic diagram illustrating a control method of reading video data from a memory.

FIG. 8 is a schematic diagram illustrating a control method for reading video data from a memory.

FIG. 9 is a schematic diagram showing a configuration of a two-screen television according to a second embodiment of the present invention.

FIG. 10 is a schematic diagram showing a configuration of a video / audio recording / reproducing apparatus according to a third embodiment of the present invention.

FIG. 11 is a schematic diagram showing a configuration of a conventional two-screen television.

[Explanation of symbols]

 11, 21 TV tuner 31 BS tuner 41, 51, 251 Video input terminal 42, 52, 252 Audio input terminal 161, 261 AV switch 170, 270 CPU 162, 262 Multi-screen processing circuit

Claims (3)

[Claims] 1. A reproduction signal from a recording medium on which a multi-screen video signal obtained by synthesizing reduced video of each video signal of a plurality of programs so that the video of the plurality of programs is incorporated into one screen is input. Means for enlarging and outputting only the video signal of one designated program among the video signals of a plurality of programs included in the reproduction signal input to the input terminal. apparatus. 2. A multi-screen video signal obtained by synthesizing reduced video of each video signal of the plurality of programs so that the video of the plurality of programs is incorporated into one screen, and an audio signal for two of the plurality of programs. Input terminal for inputting a reproduction signal from a recording medium on which is recorded a video signal of only one designated program among video signals of a plurality of programs included in the reproduction signal input to the input terminal Means for enlarging and outputting, and means for selecting and outputting an audio signal of one designated program from among audio signals of two programs included in the reproduction signal input to the input terminal. Video / audio playback device. 3. A means for generating a multi-screen video signal by reducing and synthesizing each video signal of the plurality of programs so that the video of the plurality of programs is incorporated into one screen, An output terminal for outputting an audio signal for two of the plurality of programs, and a reproduction signal from a recording medium on which the multi-screen video signal and the audio signal output from the output terminal are input. An input terminal, a means for enlarging and outputting only a video signal of a designated one of the video signals of a plurality of programs included in the reproduction signal input to the input terminal, and a reproduction input to the input terminal Means for selecting and outputting an audio signal of one designated program from among audio signals of two programs included in the signal.