JPH07193779A - Multi-channel recording/reproducing device - Google Patents

Abstract

PURPOSE:To make it possible to simultaneously record or reproduce the data of plural channels in accordance with a viewer's request. CONSTITUTION:A receiving part 4 selects two programs out of signals from a ground TV broadcasting receiving antenna 1 or the like and signals from a satellite broadcasting receiving antenna 2. A selection part 5 selects two programs out of the two selected programs and programs inputted from an external signal input terminal 3 and outputs the selected programs as signals. Recording parts 6, 7 individually record the inputted signals in two video tapes traveled by respective mechanical systems 8, 9 by respective recording magnetic heads. Reproducing parts 10, 11 individually reproduce the recorded signals from respective video tapes by respective reproducing magnetic heads. An output control part 12 generates and outputs one signal out of the two reproduced signals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording / reproducing apparatus such as a video tape recorder for inputting multi-channel signals on multiple channels and recording the contents of desired channels among them on a video tape, and more particularly to The present invention relates to a multi-channel recording / reproducing apparatus capable of simultaneously recording a plurality of channels, reproducing them at the same time, or recording and reproducing them at the same time according to a viewer's request.

[0002]

2. Description of the Related Art In recent years, with the expansion of terrestrial broadcasting, satellite broadcasting, CATV broadcasting, etc., the number of broadcasting channels has increased, and
Programs (that is, video programs) supplied by so-called package media such as video tapes and optical discs are also increasing. Accordingly, conventional recording / reproducing devices such as video tape recorders have a built-in tuner for receiving satellite broadcasts, or have two video tapes housed inside for long-time recording, and for each program. The function to switch the tape to record is added.

[0003]

However, in the above-mentioned conventional recording / reproducing apparatus, for example, when a plurality of programs that the viewer desires to record are broadcast at the same time, or when the viewer has a limited time. It was not considered to deal with cases such as when efficiently grasping the contents of the program.

That is, in the conventional recording / reproducing apparatus, for example,
If a tuner for receiving terrestrial TV broadcasts and CATV broadcasts and a tuner for receiving satellite broadcasts are built-in, terrestrial TV
A certain program of broadcasting or CATV broadcasting and a certain program of satellite broadcasting are recorded simultaneously, a certain program of terrestrial TV broadcasting or CATV broadcasting and another program are recorded at the same time, or a certain program of satellite broadcasting. It has been impossible to record a plurality of programs at the same time, such as simultaneously recording and other programs, or to reproduce a plurality of recorded programs at the same time. Moreover, in the conventional recording / reproducing apparatus, a terrestrial TV
It was not possible to record a certain program of broadcasting or CATV broadcasting on two or more videotapes at the same time, or to record a certain program of satellite broadcasting on two or more videotapes at the same time.

Further, in the conventional recording / reproducing apparatus, the terrestrial TV
While displaying a certain program of broadcasting or CATV broadcasting on an external television receiver or the like by the recording / reproducing apparatus, the recording / reproducing apparatus itself simultaneously records a certain program of satellite broadcasting, or conversely While the program for recording and reproducing is displayed on an external television receiver or the like by the recording and reproducing apparatus, the recording and reproducing apparatus itself is simultaneously connected to the ground
Although it was possible to record a certain program of V broadcast or CATV broadcast, while displaying a certain program of terrestrial TV broadcast or CATV broadcast on an external television receiver or the like by a recording / reproducing device, While the recording / reproducing apparatus itself simultaneously records other programs of terrestrial TV broadcasting or CATV broadcasting, or conversely displaying a certain program of satellite broadcasting on an external television receiver or the like by the recording / reproducing apparatus, the recording / reproducing apparatus itself. Could not record other satellite programs at the same time.

Furthermore, in the conventional recording / reproducing apparatus, it was impossible to record a certain program and simultaneously reproduce another program.

The present invention has been made in view of the points that have not been taken into consideration in the above-mentioned prior art, and an object thereof is to be able to receive various broadcasts and to simultaneously receive a plurality of channels according to the viewer's request. It is an object of the present invention to provide a multi-channel recording / reproducing apparatus capable of recording, reproducing them at the same time, recording and displaying at the same time at the same time, or recording and reproducing at the same time.

[0008]

In order to achieve the above-mentioned object, in the present invention, two or more mechanism means for mounting and running video tapes, and two or more signals for recording are input. Select means for selecting programs of two or more channels that are the same or different from these signals and output them as signals respectively, and one-to-one correspondence with the mechanism means, and each has a recording head. By the recording head, two or more recording means for separately recording the signals output from the selecting means, and one-to-one correspondence with the mechanism means, respectively, on each of the video tapes run by the corresponding mechanism means, Each of them has a reproducing head, and at the time of reproducing, the reproducing head separates recorded signals from each of the video tapes run by the corresponding mechanical means. And two or more reproduction means for outputting reproduced, from the signal output from the reproducing means, 1
And an output means for generating and outputting two signals.

[0009]

The selecting means inputs two or more signals,
Programs of two or more channels that are the same or different are selected from these signals, and there are two or more recording means, and the signals output from the selecting means are recorded separately. Further, there are two or more reproduction means, and reproduce the recorded signals separately. Therefore, in the present invention, it is possible to simultaneously record a plurality of channels and reproduce them at the same time.

Further, since there are two or more mechanical means for mounting and running the video tape, a signal is recorded by the recording means on the video tape which is run by a certain mechanical means, and at the same time, another signal is recorded. Recording and reproduction can be performed at the same time by reproducing the signal from the video tape running by the mechanical means by the reproducing means.

Further, the output means generates one signal from at least one or more of the signals output from the selection means at the time of recording and outputs it to an external television receiver or the like. In the case of obtaining it, for example, while displaying a certain program of terrestrial TV broadcasting or CATV broadcasting on an external television receiver or the like, simultaneously recording other programs of terrestrial TV broadcasting or CATV broadcasting or satellite broadcasting. It is possible to simultaneously record another program of satellite broadcasting while displaying a certain program of 1) on an external television receiver or the like.

[0012]

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

FIG. 1 is a block diagram showing a multi-channel recording / reproducing apparatus as a first embodiment of the present invention.

In the figure, 1 is a terrestrial TV broadcast receiving antenna or CATV signal input terminal, 2 is a satellite broadcast receiving antenna, 3 is an external signal input terminal, 4 is a receiving section consisting of a tuner and a demodulation circuit, 5 is a signal selector, 6,
Reference numeral 7 is a recording unit composed of a recording magnetic head and a signal processing circuit for applying an appropriate signal thereto, 8 and 9 are mechanical systems for controlling mounting and running of a video tape, and 10 and 11 are reproducing magnetic heads and their components. , A reproduction unit including a signal processing circuit for reproducing the signal of No. 1, an output control unit 12 for screen selection and division, a signal output terminal 13, a channel selection and reproduction control unit 14,
Reference numeral 15 is an input unit such as a keyboard and a remote controller.

In this embodiment, first, a case where two programs are recorded simultaneously will be described. The receiving unit 4 receives a signal input from the terrestrial TV broadcast receiving antenna or the CATV signal input terminal 1 and a satellite broadcast receiving antenna 2 and receives a 1 GHz signal by a down converter (not shown) attached to the antenna 2. First intermediate frequency signal of so-called satellite broadcasting (BS-IF)
Signal), and the control unit 14 according to the tuning information input from the input unit 15 according to the viewer's request.
Two programs are selected from these signals in accordance with the control signal output from each of them and output as respective signals. In addition, as a method of selecting the program,
Programs can be selected one by one from different signals, two different programs can be selected from the same signal, or two programs can be selected by selecting the same program from the same signal. .

In the selecting section 5, the two output signals (that is, two selected programs) and the signal input from the external signal input terminal 3 (one program) are respectively input, and each of them is input. From the three programs corresponding to the signals, two programs are selected in accordance with the control signal output from the control unit 14 according to the tuning information input from the input unit 15 according to the viewer's request. It is output to the recording units 6 and 7 as a signal.

The signals input to the recording units 6 and 7 are separately recorded by the recording magnetic heads of the recording units 6 and 7 on the two video tapes mounted and traveling by the mechanical systems 8 and 9, respectively. It

Therefore, according to the above, for example, the selection unit 5
In the case where the two signals output from the receiving unit 4 (that is, the two programs selected by the receiving unit 4) are selected without selecting the signal input from the external signal input terminal 3, the receiving unit If one program is selected from each of the different signals in step 4, it is possible to simultaneously record a certain program of terrestrial TV broadcasting or CATV broadcasting and a certain program of satellite broadcasting, and the same signal can be received by the receiving section 4. When two different programs are selected from the above, one program of terrestrial TV broadcasting or CATV broadcasting and another program are simultaneously recorded, or one program of satellite broadcasting program and another program are simultaneously recorded. Further, when the same program is selected from the same signal in the receiving unit 4 to form two programs, terrestrial TV broadcasting or Or you can record to record simultaneously the certain program ATV broadcasting to two or more video tape, or a certain program of a satellite broadcast two or more video tape simultaneously.

Next, a case where two programs are reproduced simultaneously will be described. The signals respectively recorded on the two video tapes mounted and traveling by the mechanical systems 8 and 9 are separately reproduced by the reproducing magnetic heads of the reproducing units 10 and 11 and input to the output control unit 12. .

In the output control unit 12, the control unit 1 is controlled by the output information input from the input unit 15 according to the viewer's request.
In accordance with the control signal output from 4, the image and audio signals are output from the signal output terminal 13. That is, for example, to display two screens at the same time (so-called picture-in-picture), the two screens are configured and output as one screen, or only one of the screens is selected and output. .

Therefore, as described above, the two programs separately recorded on the two video tapes can be simultaneously reproduced.

Next, a case where recording and external display are performed simultaneously will be described. In the selection unit 5, two signals output from the reception unit 4 (that is, two selected programs) and a signal input from the external signal input terminal 3 (one program) are input, respectively. From the three programs corresponding to each signal, one program is selected according to the control signal output from the control unit 14 according to the tuning information input from the input unit 15 according to the viewer's request, In addition to being output to the recording unit 6 as a signal, one program is selected separately and output to the output control unit 12 as a signal.

The signal input to the recording unit 6 is recorded by the recording magnetic head of the recording unit 6 on the running video tape mounted by the mechanism system 8, and the signal input to the output control unit 12 is The signal is directly output to an external television receiver or the like via the signal output terminal 13.

Therefore, for example, when the receiving unit 4 selects two different programs from the same signal, the selecting unit 5 does not select the signal input from the external signal input terminal 3 and receives the signal. Two signals output from the unit 4 (that is, two programs selected by the receiving unit 4)
When one is output to the recording unit 6 and the other is output to the output control unit 12, a certain program of terrestrial TV broadcasting or CATV broadcasting is displayed on an external television receiver or the like, and at the same time terrestrial TV broadcasting is displayed. Alternatively, another program of CATV broadcasting can be recorded, or another program of satellite broadcasting can be simultaneously recorded while displaying a certain program of satellite broadcasting on an external television receiver or the like.

Further, a case where recording and reproduction are performed simultaneously will be described. In the selection unit 5, the two signals output from the reception unit 4 (that is, the selected two programs),
A signal (one program) inputted from the external signal input terminal 3 and a signal inputted from the external signal input terminal 3, respectively, are selected from among the three programs corresponding to the respective signals, which are inputted from the input section 15 in response to the viewer's request. One program is selected according to the control signal output from the control unit 14 according to the station information, and is output as a signal to the recording unit 6, for example.

Then, the signal input to the recording unit 6 is recorded by the recording magnetic head of the recording unit 6 on the video tape mounted and traveling by the mechanical system 8.

On the other hand, at the same time, the signal recorded on the running video tape mounted by the mechanical system 9 is reproduced by the reproducing unit 1.
It is reproduced by a signal by the reproducing magnetic head No. 1 and inputted to the output control unit 12. The signal input to the output control unit 12 is output to the signal output terminal 13 as it is.

It should be noted that the selection unit 5 selects one of the three programs according to the control signal output from the control unit 14 according to the tuning information input from the input unit 15 according to the viewer's request. In addition to selecting a program and outputting it as a signal to, for example, the recording unit 6, one program may be selected and output as a signal to the output control unit 12 in that case. Is playback unit 1
The signal from No. 1 and the signal from the selection unit 5 are input, and the output control unit 12 responds to the control signal output from the control unit 14 according to the output information input from the input unit 15 according to the viewer's request. Image and audio signals to the signal output terminal 13
Output more.

Therefore, as described above, while recording a certain program, another program can be reproduced at the same time.

It is also possible to alternately switch between the recording video tape and the reproducing video tape while simultaneously recording and reproducing in this way. That is, when a viewer is viewing a certain program currently being broadcast on a television receiver or the like, a state in which he / she cannot continue watching occurs, and then, when the viewer is able to watch again, If you want to continue watching the same program that is being broadcast from the time when it becomes unviewable, the conventional recording / playback device starts recording on a video tape from the time when it becomes unviewable and broadcasts it. Continue recording until the program ends, and then rewind the videotape to the point where the recording started and start playing, so even if you can go back to the state where you cannot watch I can't start, I have to wait until the program on the air is finished,
Therefore, the viewer cannot efficiently understand the content of the program within a limited time.

On the other hand, in this embodiment, recording is started on one of the video tapes from the time when the video tape cannot be viewed, and thereafter, when the video tape is changed from the non-viewable status to the viewable status, the video tape is recorded. At the same time when the recording of (1) is finished, the subsequent recording is started on the other video tape, and after that, the recorded video tape is rewound to the time when the recording was started and the reproduction is started. After that, when the playback of the video tape being played back is finished, the recording of the other video tape being finished is finished, and at the same time, the playback of the finished video tape is continued without rewinding. Recording is started, and after that, the video tape whose recording has been completed is rewound to the time when recording was started, and reproduction is started. Hereinafter, the same operation is repeated until the program on the air is finished or the portion the viewer desires to watch is finished. By doing this, when the viewer becomes able to watch again from the unwatchable state, if the viewer wants to continue watching from the time when it becomes unviewable, without waiting for the end of the program being broadcast Since viewing can be started immediately, the viewer can efficiently understand the content of the program within a limited time.

In the above operation, when the video tape is rewound to the time when the recording is started, the time when the recording is started is detected, or the reproduction of the recorded amount is ended during the reproduction. When recording on a video tape, index signals are recorded in advance at the start of recording and at the end of recording, and the index signal is rewound or played back. By detecting it when it does, it does so.

As described above, according to this embodiment,
It can receive terrestrial TV broadcasts, CATV broadcasts and satellite broadcasts, and simultaneously records multiple channels according to the viewer's wishes, reproduces them simultaneously, records and displays them externally at the same time, or records them. It is possible to perform and playback at the same time.

Further, according to the present embodiment, the video tape for recording and the video tape for reproducing are alternated while simultaneously performing recording and reproducing by using two mechanism systems and signal systems (recording unit and reproducing unit). Therefore, it is possible to start recording from an arbitrary time while watching a certain program being received, and to watch the program from the time when the recording is started after an arbitrary time elapses. .

FIG. 2 is a block diagram showing a specific example of the receiving section 4 shown in FIG. In the figure, parts that perform the same operations as in FIG. 1 are assigned the same numbers as in FIG. 1 and their explanations are omitted.
In addition, 21 and 22 are TV / CATV front ends, 23 and 24 are BS front ends, 25 is a switching unit, 26 and 28 are tuner units that convert TV / CATV signals to intermediate frequency signals, and 27 and 29 are TVs. A demodulator for demodulating a CATV intermediate frequency signal, 30, 32 are tuners for converting a BS-IF signal into a second intermediate frequency signal for satellite broadcasting, and 31, 33 are demodulators for demodulating a second intermediate frequency signal for satellite broadcasting. 42, a terrestrial TV signal and CATV signal input terminal, 43 a BS-IF signal input terminal, and 44 and 45 output terminals.

Antenna for terrestrial TV broadcasting or CAT
BS received from the V signal input terminal 1 and the satellite broadcast receiving antenna 2 and frequency-converted to the 1 GHz band
-IF signals are input from the input terminals 42 and 43, respectively, and are split into two and input to the TV / CATV front ends 21 and 22 and the BS front ends 23 and 24, respectively. These front ends perform channel selection and demodulation according to the desired viewing channel, output demodulated signals, and output them to desired output terminals through the switching unit 25.

If the receiving section 4 is configured as described above, the effects as described above can be obtained in this embodiment.

FIG. 3 is a block diagram showing another specific example of the receiving section 4 shown in FIG. In the figure, parts that perform the same operations as in FIG. 2 are assigned the same numbers as in FIG. 2 and their explanations are omitted. In addition, 40, 41 are BS / TV / CATV shared tuners, 46, 48 are terrestrial TV signal and CATV signal input terminals, 47 and 49 are BS-IF signal input terminals, 50,
52 is a TV signal demodulation signal output terminal, 51 and 53 are satellite broadcast demodulation signal output terminals, 58 and 59 are channel selection signal input terminals,
Reference numeral 60 is an RF signal processing circuit including an input tuning filter for the terrestrial TV signal and CATV signal, an amplifier circuit, and an interstage tuning filter, and 61 is an RF signal including an input tuning filter for the BS-IF signal, an amplifier circuit, and an interstage tuning filter. Signal processing circuit,
62 is an RF signal switching circuit, 63 is a frequency conversion circuit, 64
Is a local oscillator circuit, 65 is a frequency synthesizer using a PLL (phase locked loop), 66 is a terrestrial TV signal, and CAT
An intermediate frequency signal processing circuit that performs band selection and amplification for the intermediate frequency signal of the V signal, 67 is an intermediate frequency signal processing circuit that performs band selection and amplification for the second intermediate frequency signal of satellite broadcasting, 6
Reference numeral 8 is a demodulation circuit for demodulating the intermediate frequency signals of the terrestrial TV signal and CATV signal, and 69 is a demodulation circuit for demodulating the second intermediate frequency signal of the satellite broadcast. Since the BS / TV / CATV shared tuner 41 has the same configuration as the BS / TV / CATV shared tuner 40, the configuration in the block is omitted in FIG.

Antenna for receiving terrestrial TV broadcasting or CAT
BS received from the V signal input terminal 1 and the satellite broadcast receiving antenna 2 and frequency-converted to the 1 GHz band
-IF signals are input from the input terminals 42 and 43, respectively, and are divided into two to be input terminals 46, 48 and 47 of the BS / TV / CATV shared tuners 40 and 41, respectively.
It is input to 49.

Here, of the two BS / TV / CATV common tuners 40 and 41, BS / TV / CAT is the representative.
The V-shared tuner 40 will be described. BS / TV / C
The ATV common tuner 40 is used for terrestrial TV signals and CATV.
In order to enable variable continuous tuning from the signal band to the BS signal band, a wideband frequency conversion circuit 63 and a local oscillation circuit 64
And a frequency synthesizer circuit 65 for tuning, when receiving a BS signal, when receiving a TV signal or when receiving a CATV signal,
It is a tuner that is shared by and simplifies the circuit.

That is, when receiving a desired channel from the terrestrial TV signal and the CATV signal (in Japan, about 90 to 770 MHz), the RF signal processing circuit 60 selects the desired channel from the signal input from the input terminal 46. , PL according to the tuning signal input to the tuning signal input terminal 58
The tuning voltage output from the L frequency synthesizer 65 selectively allows the signal to pass therethrough, amplifies or attenuates the signal to a desired signal level, and inputs the signal to the frequency conversion circuit 63 via the switching circuit 62. The frequency conversion circuit 63 converts the input signal to an intermediate frequency (58 MHz band in Japan) by the local oscillation signal from the local oscillation circuit 64, which can change the oscillation frequency according to the tuning voltage, and outputs the intermediate frequency. . The intermediate frequency signal is further band-selected by the intermediate frequency signal processing circuit 66, amplified to a desired signal level, demodulated into a video and audio signal by the demodulation circuit 68, and output through the output terminals 50 and 44. .

On the other hand, when a desired channel is received from satellite broadcasting (BS-IF signal in Japan is about 1030 to 1330 MHz), the desired channel is similarly inputted from the signal inputted from the input terminal 47, and the RF signal processing circuit is operated. At 61, the signal is selectively passed, amplified or attenuated to a desired signal level, and input to the frequency conversion circuit 63 via the switching circuit 62. The frequency conversion circuit 63 converts the input signal into an intermediate frequency (400 MHz band in Japan) by the local oscillation signal from the local oscillation circuit 64, and outputs the intermediate frequency. The intermediate frequency signal is further band-selected by the intermediate frequency signal processing circuit 67, amplified to a desired signal level, demodulated by the demodulation circuit 69 into video and audio signals, and output via the output terminals 51 and 44. .

The operation contents of the BS / TV / CATV shared tuner 40 are as follows.
The same applies to the V-shared tuner 41.

If the receiving unit 4 is configured as described above, the circuit scale of the receiving unit 4 can be further reduced as compared with the specific example shown in FIG. 2, and tuner tuning control can be simplified. It is possible to achieve the effect.

FIG. 4 is a perspective view schematically showing a specific example of the input section shown in FIG. In the figure, 70 is a remote control console (that is, a remote controller, so-called remote control), 71 is a transmission window, and 72, 73, 74, and 75 are operation buttons.

The operation buttons 72 and 73 are buttons for switching between the two systems of recording and reproducing systems. When the operation button 72 is pressed, channel selection, recording and reproducing operations, etc. on the remote control console 70 are performed. The operation of the other system is performed, and the operation of the other system is performed by pressing the operation button 73.

In this specific example, two buttons are provided to switch between the two recording / reproducing systems. However, it is possible to switch them one by one or to switch them by a switch instead of a button. It may be.

The operation buttons 74 and 75 perform recording and reproduction alternately in two systems at the same time. For example, as described above,
It is a button for starting recording from an arbitrary time while watching a certain program being received, and viewing the program from the time when recording is started after an arbitrary time has elapsed. That is, by pressing the operation button 74, recording is started in one recording system from that time point, and thereafter, by pressing the operation button 75, the recording is ended at the same time, and at the same time, the other recording system is made to continue recording. After that, the recorded video tape is rewound up to the time when the operation button 74 is pressed, the reproduction is started by one reproduction system, and thereafter, when the reproduction of the recorded amount is completed, the other At the same time as ending the recording in the recording system of, the recording is started in one recording system, and after that,
The recorded video tape is rewound to the time when the recording is started, the reproduction is started by the other reproducing system, and the same operation is repeated thereafter.

In this specific example, the two operation buttons 74,
Although 75 is provided, a method of sequentially performing these with one button may be used.

By providing these operation buttons, 2
It is possible to switch the recording / playback system of the system, and furthermore, recording can be started from any time while watching a certain program being received by a simple operation, and from the time when recording is started after an arbitrary time has elapsed. You can watch the program.

FIG. 5 is a block diagram showing a multi-channel recording / reproducing apparatus as a second embodiment of the present invention. This embodiment is characterized in that a plurality of programs are simultaneously recorded or reproduced on one video tape.

In the figure, parts that perform the same operations as in the first embodiment shown in FIG. 1 are assigned the same numbers as in FIG. 1 and their explanations are omitted. In addition, 16 is a signal processing unit that outputs two signals that are asynchronously input in synchronization with each other, and 17 is a mechanism system that controls mounting and running of one video tape.

In this embodiment, first, the case where two programs are recorded simultaneously will be described. First mentioned above
In the same manner as in the first embodiment, the receiving unit 4 receives the signal input from the terrestrial TV broadcast receiving antenna or the CATV signal input terminal 1 and the satellite broadcast receiving antenna 2 and receives the down converter attached to the antenna 2. A first intermediate frequency signal (BS-IF signal) of so-called satellite broadcasting, which has been frequency-converted to a 1 GHz band by (not shown), is input respectively, and is input from the input unit 15 according to the viewer's request. Two programs are selected from these signals according to the control signal output from the control unit 14 according to the tuning information, and are output as respective signals.

In the selection unit 5, the 2 output from the reception unit 4 is output.
Two signals (that is, two selected programs) and a signal (one program) input from the external signal input terminal 3 are respectively input, and the program is viewed from among the three programs corresponding to the respective signals. Two programs are selected according to the control signal output from the control unit 14 according to the tuning information input from the input unit 15 according to the wishes of the person, and are output to the signal processing unit 16 as respective signals.

Then, the signal processing unit 16 synchronizes the two input signals and inputs them to the recording units 6 and 7. The signals input to the recording units 6 and 7 are simultaneously recorded by the recording magnetic heads of the recording units 6 and 7 on one running video tape mounted by the mechanical system 17.

Here, a video tape on which these signals are recorded is schematically shown in FIG. In the figure, 18 is a video tape, 19 is a track recorded by one recording magnetic head, and 20 is a track recorded by the other recording magnetic head. In this embodiment, two signals are thus recorded on each track of one video tape by the two recording magnetic heads.

Therefore, according to the above, it is possible to simultaneously record a certain program of terrestrial TV broadcasting or CATV broadcasting and a certain program of satellite broadcasting on one video tape. The program and the other program can be simultaneously recorded on one video tape, or a certain program of the satellite broadcasting program and the other program can be simultaneously recorded on one video tape.

Here, the signal processing unit 16 in FIG. 5 will be described in more detail. FIG. 7 is a block diagram showing a specific example of the signal processing unit 16 shown in FIG. In the figure, 161, 162 input terminals, 163, 164 are output terminals, 165, 166 are synchronous extraction circuits, 167 is a memory,
Reference numeral 168 denotes a memory write timing generation circuit, 16
Reference numeral 9 is a read timing generation circuit from the memory.

The signals input from the input terminals 161 and 162 are extracted by the sync extraction circuits 165 and 166, respectively. The signal input from the input terminal 162 is written in the memory 167 by the write control signal from the timing generation circuit 168 which is synchronized with its own synchronization signal, and is synchronized with the synchronization signal extracted from the signal input from the input terminal 161. , Is read from the memory 167 by a read control signal from the timing generation circuit 169. By this signal processing, synchronized output signals can be obtained from the output terminals 163 and 164.

Next, the case where two programs are reproduced simultaneously will be described. 2 recorded on one running video tape mounted by the mechanical system 2
The two signals are simultaneously reproduced by the reproducing magnetic heads of the reproducing units 10 and 11 and input to the output control unit 12.

The output control unit 12 controls the output of the control unit 1 according to the output information input from the input unit 15 according to the viewer's request.
In accordance with the control signal output from 4, the image and audio signals are output from the signal output terminal 13.

Therefore, as described above, the two programs recorded on one video tape can be reproduced simultaneously.

Next, the case where recording and external display are performed simultaneously will be described. In the selection unit 5, two signals output from the reception unit 4 (that is, two selected programs) and a signal input from the external signal input terminal 3 (one program) are input, respectively. From the three programs corresponding to each signal, one program is selected according to the control signal output from the control unit 14 according to the tuning information input from the input unit 15 according to the viewer's request, In addition to being output to the recording unit 6 as a signal, one program is selected separately and output to the output control unit 12 as a signal.

Then, the signal input to the recording unit 6 is recorded on one video tape mounted by the mechanism system 17 and running, by the recording magnetic head of the recording unit 6, and input to the output control unit 12. The signal is output as it is to an external television receiver or the like via the signal output terminal 13.

Therefore, as described above, while displaying a certain program of the terrestrial TV broadcast or the CATV broadcast on the external television receiver or the like, at the same time the terrestrial TV broadcast or the CTV broadcast is displayed.
Record other programs of ATV broadcast, or
While displaying a certain program of satellite broadcasting on an external television receiver or the like, another program of satellite broadcasting can be recorded at the same time.

As described above, according to this embodiment,
It can receive terrestrial TV broadcasts, CATV broadcasts and satellite broadcasts, and can simultaneously record multiple channels on a single videotape or play them back at the same time according to the viewer's wishes, and record and display externally. It is possible to go at the same time. Also, since it has only one mechanism system, the number of parts can be small and the mechanism scale can be small. Furthermore, since two input signals are recorded in synchronization with each other, two signals can be recorded during reproduction. Servo control common to the mechanical system 17 can be used, and there is an effect that the reproducing unit can be simplified.

Next, FIG. 8 is an explanatory diagram showing an example in which the remote operation console shown in FIG. 4 is applied and used as an input unit of a television receiver with a built-in recording / reproducing device. In the figure, 8
Reference numeral 0 is a television receiver with a built-in recording / reproducing device, and 81 is a remote control console. Operation buttons 82 and 83 corresponding to the operation buttons 74 and 75 shown in FIG. 4 are provided on the remote operation console 81.

Television receiver 8 with built-in recording / reproducing apparatus
If the recording / reproducing apparatus in No. 0 has the same configuration as that of the embodiment shown in FIG. 1, the operation buttons 82 and 83 of the remote operation console 80 will be described.
By performing the same operation as the operation buttons 74 and 75 described in FIG. 4, the same effect as that described in FIG. 4 can be obtained.

Further, by pressing the operation button 82 corresponding to the operation button 74, recording is started in one recording system from that time point, but after that time point, the operation button 83 corresponding to the operation button 75 is pressed. Until the operation button 82 is pressed until the next operation button 83 is pressed, the television receiver 80 with a built-in recording / reproducing device does not perform recording until the viewer presses the operation button 82. Power supplies other than the necessary parts may be shut off.

Therefore, the power source of the television receiver 80 with a built-in recording / reproducing apparatus is divided into a power source for a portion required for recording and a power source for the other portions, and the operation button 82 is pressed before the next operation. Until the button 83 is pressed, the latter power supply is cut off. That is, for example, the operation button 8
When 2 is pressed, the main power source of the television receiver 80 with a built-in recording / reproducing device is cut off (however, the wall power source terminal is connected), but the recording of the receiving unit, the recording unit, the mechanical system, etc. Power is supplied to necessary parts, or power is cut off to parts that are not necessary for recording, such as an image display unit (display). After that, when the operation button 83 is pressed, power is supplied in the same manner as in the normal viewing state.

As described above, the power consumption can be reduced during this operation. The above-described configuration and operation are not limited to the case of the television receiver with a built-in recording / reproducing apparatus, but can be applied to the case where the recording / reproducing apparatus and the television receiver are independent. That is, from the time the operation button 82 is pressed until the time when the operation button 83 is next pressed, the power supply of the recording / reproducing apparatus continues to be energized, but the power supply of the television receiver is cut off. By doing so, the same effect as described above can be obtained.

On the other hand, the recording / reproducing apparatus of the television receiver 80 with a built-in recording / reproducing apparatus shown in FIG. 8 has the same structure as the conventional recording / reproducing apparatus (that is, only one recording / reproducing system is provided).
If the operation button 82 is pressed, recording is started in the recording system from that time point, and then the operation button 83 is pressed to end the recording at that time point and the video tape whose recording is ended. Is rewound until the operation button 82 is pressed, and the reproduction is started in the reproduction system.

In this case, unlike the case described with reference to FIG. 4, only the recorded contents up to the time when the operation button 83 is pressed can be viewed, but the operation in the conventional recording / reproducing apparatus (that is,
Press the record button to start recording, press the stop button to stop recording, then press the rewind button, press the stop button again, press the play button, or record operation to set the start and end times of recording. The operation is significantly easier than

In the above operation, when the video tape is rewound to the time when the operation button 82 is pushed, the detection of the time when the operation button 82 is pushed is detected in advance when the video tape is recorded. The index signal is recorded at the time when the button 82 is pressed, and the index signal is detected by rewinding.

Further, in the above-mentioned operation, when the operation button 83 is pressed, the recording is terminated at the time of pressing the operation button 83, and
The recorded video tape is rewound up to the time when the operation button 82 is pressed, and the reproduction is started by the reproduction system. Instead, the operation button 83 is continuously pressed once or more, and then the time is changed. Then, recording is stopped, and the video tape whose recording is stopped is rewound for a time proportional to the number of times the operation button 83 is pressed (for example, the operation button 8
If 3 is pressed once to rewind for 5 seconds, press N times to rewind for 5 N seconds. ), Reproduction may be started in the reproduction system.

In the case of the above-mentioned operation, for example, when the viewer presses the operation button 82 to record a certain program on the video tape and simultaneously watches the program, the viewer is watching the program. If the viewer wants to see the scene immediately again, the viewer presses the operation button 83, for example, three times to stop the recording at that point.
The video tape is rewound for 15 ([5 seconds] × [3 times]) seconds, reproduction is started, and the viewer can see again the scene he was watching immediately before pressing the operation button 83. Then, after that, when the viewer presses the operation button 82 again, recording is restarted from that point, and the above operation can be performed again.

Therefore, from the above, while watching,
It is possible to re-view from the previous portion only for a desired time (however, less than the time recorded in advance).

The recording / reproducing apparatus in the television receiver 80 with a built-in recording / reproducing apparatus shown in FIG. 8 does not have the same configuration as the conventional recording / reproducing apparatus, but has the same configuration as the embodiment shown in FIG. In this case, even after pressing the operation button 83 one or more times, the program can be continuously recorded in another recording system, so that the video tape whose recording is stopped is proportional to the number of times the operation button 83 is pressed. While rewinding by the time, and during the subsequent playback,
Continuous recording can be performed without interruption of recording.

Furthermore, when the viewer turns off the power after viewing the program, the power may be turned off after rewinding the used video tape. When configured to operate in this manner, it is not necessary to perform an operation for rewinding each time the viewer starts viewing, and the operation is simplified.

Next, FIG. 9 is an explanatory view showing an example in which the remote operation console shown in FIG. 4 is applied and used as an input unit of a recording / reproducing apparatus and a CATV home terminal interlocked with it. In the figure, 84 is a television receiver, 85 is a recording / reproducing device, 86 is a CATV home terminal,
7 is a remote control console. Operation buttons 82 and 83 corresponding to the operation buttons 74 and 75 shown in FIG. 4 are provided on the remote operation console 87.

In this example, a recording / reproducing apparatus 85 having the same structure as that of the embodiment shown in FIG. 1 or the same structure as the conventional recording / reproducing apparatus and a CATV home terminal 86 are connected by a control line, The two are interlocked with each other, and the remote control console 87 functions as an input unit of both the recording / reproducing device 85 and the CATV home terminal 86.

The CATV home terminal 86 generally stores information such as channels, start times, and end times of all programs broadcast as CATV broadcasts in one day or one week. The information is updated every day or every lap. Therefore, the recording / reproducing device 85 and the CATV home terminal 8
The recording / reproducing apparatus 85 is controlled by
The information stored in the ATV home terminal 86 can be used.

That is, by pressing the operation button 82, the recording / reproducing apparatus 85 starts recording from that time point, and then by pressing the operation button 83, recording is ended at that time point, and the video that has been recorded is ended. The tape is rewound up to the time when the operation button 82 is pressed, and the reproduction is started.
If the operation button 83 has not been pressed even though the program to be recorded has already ended, a program that does not need to be recorded will also be recorded.

Therefore, in this example, since the CATV home terminal 86 recognizes the received program, the CATV home terminal 86 is recorded by the recording / reproducing device 85 by pressing the operation button 82. Is started based on the stored information, and when the operation button 83 is not pressed by the derived end time, the end time (that is, the recording At the end of the program
The recording / reproducing apparatus 85 is instructed to end the recording through the control line, and the recording / reproducing apparatus 85 terminates the recording according to the instruction and rewinds the recorded video tape to the time when the operation button 82 is pressed. And work to wait.

As a method of causing the recording / reproducing apparatus 85 to recognize that the recorded program is completed from the CATV home terminal 86, as described above,
The CATV home terminal 86 may give an instruction to the recording / reproducing apparatus 85 via the control line, or a signal to be recorded from the CATV home terminal 86 to the recording / reproducing apparatus 85 without providing a control line. Since (signals related to video and audio) are input, the CATV home terminal 86 has a function of interrupting the signal input to the recording / reproducing device 85 when the program being received is completed, and recording / reproducing is performed. The device 85 may have a function of determining whether or not a signal is input from the CATV home terminal 86.

Therefore, as described above, the recording / reproducing apparatus 85 can recognize the end point of the program being recorded by linking with the CATV home terminal 86.
You can record only the desired program with a simple operation.

In this example, the television receiver 8
4 and the recording / reproducing device 85 are used, the same effect can be obtained by using a television receiver with a built-in recording / reproducing device as shown in FIG. 8 in place of them.

In each of the embodiments described above, the number of signals that can be simultaneously recorded or reproduced is two, but the same effect can be obtained when the number of signals is two or more.

[0089]

According to the present invention, a recording / reproducing apparatus such as a video tape recorder can receive various broadcasts,
In addition, a plurality of channels can be simultaneously recorded or reproduced at the same time according to the viewer's request. In addition, recording and external display can be performed simultaneously. That is, for example, while displaying a certain program of terrestrial TV broadcasting or CATV broadcasting on an external television receiver or the like, at the same time, recording another program of terrestrial TV broadcasting or CATV broadcasting, or executing a certain program of satellite broadcasting. Other programs for satellite broadcasting can be recorded at the same time while being displayed on an external television receiver or the like.

By providing two or more mechanical means,
Recording and playback can be performed at the same time. Furthermore, recording can be started from any time while watching a certain program being received, and the program can be watched from the time when recording is started after an arbitrary time has elapsed. Will also be possible. Further, by providing a dedicated operation button (switching of recording / reproducing system, arbitrary start of recording / reproducing, etc.) on the remote operation console, the operation for performing the above operation can be easily performed. Further, the buttons and operations of these remote control consoles can be used in the conventional recording / reproducing apparatus.

Furthermore, when two BS / TV / CATV shared tuners 40 are used in the receiving section, the circuit scale of the receiving section can be reduced, and the tuner tuning control can be simplified.

[Brief description of drawings]

FIG. 1 is a block diagram showing a multi-channel recording / reproducing apparatus as a first embodiment of the present invention.

FIG. 2 is a block diagram showing a specific example of a receiving unit 4 shown in FIG.

FIG. 3 is a block diagram showing another specific example of the receiving unit 4 shown in FIG.

FIG. 4 is a perspective view schematically showing a specific example of the input unit shown in FIG.

FIG. 5 is a block diagram showing a multi-channel recording / reproducing apparatus as a second embodiment of the present invention.

FIG. 6 is an explanatory diagram schematically showing a video tape on which signals are recorded in the second embodiment.

7 is a block diagram showing a specific example of the signal processing unit 16 shown in FIG.

8 is an explanatory diagram showing an example in which the remote operation console shown in FIG. 4 is applied and used as an input unit of a television receiver with a built-in recording / reproducing device.

9 is an explanatory diagram showing an example in which the remote control console shown in FIG. 4 is applied and used as an input unit of a recording / reproducing apparatus and a CATV home terminal that operates in conjunction therewith.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Terrestrial TV broadcast receiving antenna or CATV signal input terminal, 2 ... Satellite broadcast receiving antenna, 3 ... Signal input terminal, 4 ... Receiving part, 5 ... Signal selecting part, 6, 7 ... Recording part,
8, 9, 17 ... Mechanical system, 10, 11 ... Playback section, 12 ... Output control section, 13 ... Signal output terminal, 14 ... Control section, 15 ...
Input section, 40, 41 ... BS / TV / CATV shared tuner, 70, 81, 87 ... Remote operation console.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Katsumata, inventor 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa, Ltd. Inside the Hitachi Media Visual Media Research Laboratory (72) Inventor Hisjun Tajima Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa 292 Hitachi, Ltd. Visual Media Research Center

Claims (6)

[Claims] 1. Two or more mechanism means for mounting and running video tapes, respectively, and two or more signals input during recording, and programs for two or more channels that are the same or different from these signals. Selection means for selecting and outputting each as a signal, and one-to-one correspondence to the mechanism means, each having a recording head, and at the time of recording, by the recording head, to each video tape running by the corresponding mechanism means. , Two or more recording means for separately recording the signals output from the selecting means, and one-to-one correspondence with the mechanism means, and each having a reproducing head,
At the time of reproduction, the reproducing head reproduces the recorded signals separately from each of the video tapes run by the corresponding mechanical means, and outputs the reproduced signals separately, and the signals respectively output from the reproducing means. And a means for generating and outputting one signal, and a multi-channel recording / reproducing apparatus. 2. A video tape mounted and run 1.
One mechanism means, two or more signals at the time of recording, selecting means for selecting programs of two or more channels that are the same or different from these signals, and outputting each as a signal, each having a recording head, At the time of recording, the recording head has two or more recording means for simultaneously recording the signals respectively output from the selecting means and the reproducing head on the video tape running by the mechanism means. Two or more reproducing means for simultaneously reproducing and outputting separately recorded signals from the video tape running by the mechanism means by the reproducing head;
A multi-channel recording / reproducing apparatus comprising: output means for generating and outputting one signal from the signals respectively output from the reproducing means. 3. A video tape is mounted and run 1.
One or more mechanism means, a recording means for inputting two or more signals at the time of recording, selecting programs of two or more channels which are the same or different from these signals, and outputting each as a signal; In addition to one-to-one correspondence, a recording head is provided, and at the time of recording, a video tape which is run by the corresponding mechanism means by the recording head,
At least one of the signals output from the selecting means
One or more recording means for recording one or more signals and one-to-one correspondence with the mechanism means, and a reproducing head,
One or more reproducing means for reproducing and outputting a recorded signal from the video tape running by the corresponding mechanism means at the time of reproducing, and at the time of recording,
At least one of the signals output from the selecting means
Output means for generating and outputting one signal from one or more signals and generating and outputting one signal from at least the signal output from the reproducing means at the time of reproduction. Characteristic multi-channel recording / reproducing device. 4. The multi-channel recording / reproducing apparatus according to claim 1, 2 or 3, wherein the selecting means inputs the received terrestrial TV signal or CATV signal and BS signal, and selects these signals. And a multi-channel recording / reproducing apparatus having a receiving section for performing demodulation. 5. The multi-channel recording / reproducing apparatus according to claim 4, wherein the receiving unit is a terrestrial TV signal band or C.
Regarding the range from the ATV signal band to the BS signal band,
Variable continuous tuning is possible, when receiving terrestrial TV signal or CATV signal, when receiving BS signal signal,
A multi-channel recording / reproducing apparatus having a shared tuner including at least a channel selection circuit that can be shared by all channels. 6. A device for mounting a video tape and causing it to run.
One or more mechanical means, one selecting means for inputting one or more signals during recording, selecting one or more channel programs from the signals, and outputting as a signal, and one-to-one correspondence with the mechanical means At the same time, the recording head has one or more recording means for recording the signal output from the selecting means on a video tape which is run by the corresponding mechanical means by the recording head when recording, and the mechanical means. There is a one-to-one correspondence with, and also has a playback head,
One or more reproducing means for reproducing and outputting a recorded signal from the video tape running by the corresponding mechanical means by the reproducing head, and at least one signal outputted from the reproducing means during reproduction. An output unit for generating and outputting two signals; a control unit; and an input unit having at least first and first operation buttons, wherein the control unit has a first operation of the input unit. When the button is pressed, the recording means starts the recording of the signal output from the selecting means, and when the second operation button of the input means is pressed thereafter, the mechanism means mounts the signal. After rewinding the video tape for a predetermined time, the reproducing means starts the reproduction of the signal recorded on the rewound video tape. A multi-channel recording / reproducing apparatus characterized by controlling the.