JP3199545B2 - Multi-channel recording and playback device - Google Patents

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 recording the contents of a desired channel on a video tape. The present invention relates to a multi-channel recording / reproducing apparatus capable of simultaneously recording a plurality of channels, reproducing them simultaneously, or simultaneously performing recording and reproduction as desired by a viewer.

[0002]

2. Description of the Related Art In recent years, with the expansion of terrestrial broadcasting, satellite broadcasting, CATV broadcasting, and the like, multi-channel broadcasting has been progressing,
Programs (that is, video programs) supplied by so-called package media such as video tapes and optical disks are also increasing. Along with this, conventional recording / reproducing devices such as video tape recorders have a built-in satellite broadcast receiving tuner, or a function of recording two video tapes and recording for a long time. For example, a function for switching a tape to be recorded 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 in the same time zone, or when the viewer In such a case, no consideration was given to responding to the case where the user wants to grasp the contents of the program efficiently.

That is, in a conventional recording / reproducing apparatus, for example,
When a tuner for receiving terrestrial TV broadcasting and CATV broadcasting and a tuner for receiving satellite broadcasting are built in,
A certain program of broadcasting or CATV broadcasting and a certain program of satellite broadcasting simultaneously, a certain program of terrestrial TV broadcasting or CATV broadcasting and another program simultaneously recorded, or a certain program of satellite broadcasting It was not possible to record a plurality of programs at the same time, such as simultaneously recording a program and another program, or to play back a plurality of recorded programs at the same time. In a conventional recording / reproducing apparatus, a terrestrial TV
It has not been possible to record a certain program of broadcast or CATV broadcast simultaneously on two or more video tapes, or to record a certain program of satellite broadcast simultaneously on two or more video tapes.

In a conventional recording / reproducing apparatus, a terrestrial TV
While displaying a certain program of broadcast or CATV broadcast on an external television receiver or the like by a recording / reproducing device, the recording / reproducing device itself simultaneously records a certain program of satellite broadcasting, or conversely, a program of satellite broadcasting. The recording / reproducing apparatus itself simultaneously displays the program on the external television receiver or the like by the recording / reproducing apparatus.
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 and reproducing device, The recording / reproducing apparatus itself simultaneously records other programs of terrestrial TV broadcasting or CATV broadcasting, or conversely, displays a certain program of satellite broadcasting on an external television receiver or the like by the recording / reproducing apparatus. Could not record other programs at the same time.

Furthermore, in the conventional recording / reproducing apparatus, it is impossible to simultaneously reproduce another program while recording one program.

[0007] The present invention has been made in view of the fact that it was not taken into account in the above-mentioned prior art, and has as its object to be able to receive a variety of broadcasts and to simultaneously transmit a plurality of channels according to the wishes of a viewer. An object of the present invention is to provide a multi-channel recording / reproducing apparatus capable of recording, reproducing them at the same time, simultaneously performing recording and external display, or simultaneously performing recording and reproduction.

[0008]

According to the present invention, there is provided a multi-channel recording / reproducing apparatus comprising:
At least two mechanism means for mounting recording media, respectively ;
At the time of recording, input at least two signals, these signals
At least two of a plurality of programs constituting
Select one program and output each as a signal
The selection means and the mechanism means correspond one-to-one with each other.
And a recording medium mounted on the corresponding mechanism at the time of recording.
The signals output from the selection means are recorded.
At least two recording means, and one each for the mechanism means.
One-to-one correspondence, and at the time of playback,
From the installed recording medium, each recorded signal
At least two reproducing means for reproducing and outputting,
At least the signals output from the two playback means
Output means for generating and outputting one signal.
I decided to do it .

[0009]

According to the first control signal from the user, the small amount
At least one of the two recording means
Starts and then ends recording with the second control signal
At the same time, when the other recording means starts
Then, the recording medium on which recording has been completed is pressed by the first control signal.
Back to the point in time, of the at least two
Playback by one of the playback means, and then
When the reproduction of the data is completed, the recording by the other recording means is performed.
At the same time, start recording with the one recording means
The recording medium on which recording has been completed.
To the point in time, start playback by the playback means, and
Until a third control signal for terminating the operation is applied.
The same operation is repeated .

[0010] In addition, the first control signal from the user is used.
One of the at least two recording means.
By means of recording the index signal of recording start on the recording medium
After that, the program recording starts, and then the second control signal
End of recording at the same time as recording ends by index
The recording signal, and then use the other recording means to start recording.
After recording the index signal,
Start recording and record the recording medium on which recording has been completed.
Return to the point at which the recording start index signal was recorded and
In one of the at least two reproducing means,
Start playback, and then,
When the signal is detected, the recording by the other recording means ends.
And record the index signal at the end of recording.
The index signal for recording start is recorded by the one recording means.
After recording, start recording the program and end recording.
The recording medium recorded the index signal of the recording start.
Return to the point in time, start playback by the playback means, and
The same applies until the third control signal for terminating the operation is applied.
Is repeated .

Further , according to the first control signal from the user,
One of the at least two recording means
To start recording, and then end recording with the second control signal.
At the same time as the
Start recording, and replace the recorded recording medium with
In response to a fourth control signal for controlling the return movement amount,
Move it back to any desired position of the recorded part, and
At least one of the two reproducing means
When playback is started and after that, the playback for the recorded time has ended
At this point, the recording by the other recording
Start recording with one recording means and end recording
Return the recorded media to the point where recording started, and
Means to start reproduction, and thereafter, to end this operation.
The same operation is repeated until the control signal is applied .

[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 according to 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 comprising a tuning tuner and a demodulation circuit, 5 is a signal selector, 6,
7, a recording unit comprising a recording magnetic head and a signal processing circuit for applying an appropriate signal thereto; 8, 9 a mechanism system for controlling mounting and running of a video tape; 10, 11 a reproducing magnetic head and a reproducing magnetic head; A signal processing circuit for reproducing the signal of the above, 12 is an output control unit for performing screen selection, division, etc., 13 is a signal output terminal, 14 is a channel selection and reproduction control unit,
Reference numeral 15 denotes an input unit such as a keyboard and a remote controller.

In this embodiment, a case where two programs are simultaneously recorded will be described. The receiving unit 4 receives a signal input from a terrestrial TV broadcast receiving antenna or a CATV signal input terminal 1 and a satellite broadcast receiving antenna 2 and receives a signal of 1 GHz by a down converter (not shown) attached to the antenna 2. A first intermediate frequency signal (BS-IF) of a so-called satellite broadcast frequency-converted into a band.
Signal) is input to the control unit 14 according to the channel selection information input from the input unit 15 as desired by the viewer.
, Two programs are selected from the signals in accordance with the control signals output from the CPU, and are respectively output as signals. In addition, as a way of selecting a program,
One program can be selected one by one from different signals, two different programs can be selected from the same signal, or the same program can be selected from the same signal to be two programs. .

The selector 5 receives the two output signals (ie, the two selected programs) and the signal (one program) input from the external signal input terminal 3, and inputs the two signals. From the three programs corresponding to the signals, two programs are selected in accordance with a control signal output from the control unit 14 based on channel selection information input from the input unit 15 as desired by the viewer, and The signals are output to the recording units 6 and 7.

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 two video tapes mounted and running by the mechanical systems 8 and 9 respectively. You.

Accordingly, for example, the selection unit 5
In the case where two signals output from the receiving unit 4 (that is, two programs selected by the receiving unit 4) are selected without selecting a signal input from the external signal input terminal 3, the receiving unit 4, when one program is selected from separate signals, a certain program of terrestrial TV broadcasting or CATV broadcasting and a certain program of satellite broadcasting can be simultaneously recorded. If two different programs are selected from, a certain program of terrestrial TV broadcasting or CATV broadcasting and another program are recorded simultaneously, or a certain program of satellite broadcasting program and another program are recorded simultaneously. Further, when the same program is selected from the same signal in the receiving unit 4 and two programs are selected, a terrestrial TV broadcast 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 recorded on the two video tapes mounted and running by the mechanical systems 8 and 9 are separately reproduced by the reproducing magnetic heads of the reproducing units 10 and 11, respectively, and input to the output control unit 12. .

The output control unit 12 controls the control unit 1 based on output information input from the input unit 15 as desired by the viewer.
The image and audio signals are output from the signal output terminal 13 in accordance with the control signal output from the control signal 4. That is, for example, two screens are formed into one screen so that two screens are displayed simultaneously (so-called picture-in-picture), or one of the screens is selected and output. .

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

Next, a case where recording and external display are performed simultaneously will be described. The selection unit 5 receives two signals output from the reception unit 4 (that is, the two selected programs) and a signal input from the external signal input terminal 3 (one program). From the three programs corresponding to each signal, one program is selected according to a control signal output from the control unit 14 based on channel selection information input from the input unit 15 as desired by the viewer, For example, the program is output to the recording unit 6 as a signal, and one program is separately selected and output to the output control unit 12 as a signal.

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

Therefore, as described above, for example, when two different programs are selected from the same signal in the receiving unit 4, the selecting unit 5 does not select the signal input from the external signal input terminal 3 but 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 broadcast or CATV broadcast is displayed on an external television receiver or the like, and simultaneously, Alternatively, another program of CATV broadcasting can be recorded, or another program of satellite broadcasting can be simultaneously recorded while a certain program of satellite broadcasting is displayed 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, two signals output from the reception unit 4 (that is, two selected programs)
A signal (one program) input from the external signal input terminal 3 is input, and a selection input from the input unit 15 as desired by the viewer is selected from among three programs corresponding to the signals. One program is selected according to the control signal output from the control unit 14 based on the station information, and is output as a signal to, for example, the recording unit 6.

The signal input to the recording unit 6 is recorded on a video tape mounted and running by the mechanism system 8 by the recording magnetic head of the recording unit 6.

On the other hand, at the same time, a signal recorded on a video tape mounted and running by the
The signal is reproduced by a single reproducing magnetic head by a signal and input 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.

The selecting unit 5 selects one of the three programs according to a control signal output from the control unit 14 based on channel selection information input from the input unit 15 as desired by the viewer. In addition to selecting a program and outputting it as a signal to, for example, the recording unit 6, a single program may be separately selected and output to the output control unit 12 as a signal. Is the playback unit 1
1 and the signal from the selection unit 5 are input. The output control unit 12 responds to the control signal output from the control unit 14 by the output information input from the input unit 15 according to the viewer's request. And outputs 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 the video tape for recording and the video tape for reproduction while simultaneously performing recording and reproduction in this way. That is, when a viewer is watching a certain program that is currently being broadcast on a television receiver or the like, a state occurs in which the viewer cannot continue to watch, and then, when the viewer can watch again, If the user wishes to continue to watch the same program being broadcast from the point at which viewing is disabled, the conventional recording / reproducing apparatus starts recording on a video tape from the point at which viewing is disabled, and broadcasts the program. The program continues to be recorded until the program ends, and then the videotape is rewound to the point where recording started, and playback is started. You can't start, you need to wait until the program that's airing is over,
Therefore, the viewer cannot efficiently grasp the contents of the program within a limited time.

On the other hand, in the present embodiment, recording starts on one video tape from the time when the video tape cannot be viewed, and then, when the video tape can be viewed again from the non-viewable state, the video tape is recorded. At the same time as the end of the recording, the subsequent recording is started on the other video tape, and after that, the video tape on which the recording is completed is rewound to the time when the recording is started, and the reproduction is started. Thereafter, when the reproduction of the recorded video tape is completed, the recording of the other recorded video tape is terminated, and at the same time, the recording is continued without rewinding to the reproduced video tape. , And after that, the video tape on which the recording has been completed is rewound to the point at which the recording was started, and reproduction is started. Hereinafter, the same operation is repeated until the program being broadcast ends or a portion desired by the viewer to view ends. By doing so, when the viewer is able to watch again from the unavailable state, if the viewer wants to continue watching from the point at which the viewer is unable to view, without waiting for the end of the program being broadcast Since viewing can be started immediately, the viewer can efficiently grasp the contents of the program within a limited time.

In the above operation, when the video tape is rewound to the point at which the recording is started, the detection of the point at which the recording is started, or the end of the reproduction of the recorded part during the reproduction. The detection at the time of recording is performed by recording an index signal at the time of starting recording and at the time of ending recording when recording on a video tape, respectively, and rewinding or reproducing the index signal. This is done by detecting when it is done.

As described above, according to this embodiment,
Can receive terrestrial TV broadcast, CATV broadcast and satellite broadcast, and simultaneously record multiple channels according to the viewer's request, reproduce them simultaneously, record and display externally at the same time, or record And playback can be performed simultaneously.

Further, according to the present embodiment, while simultaneously performing recording and reproduction using two mechanism systems and signal systems (recording section and reproduction section), the video tape for recording and the video tape for reproduction are alternately switched. For example, it is possible to start recording from an arbitrary time while watching a certain program being received, and to view the program from the time when the recording was started after an elapse of an arbitrary time. .

FIG. 2 is a block diagram showing a specific example of the receiving section 4 shown in FIG. In this figure, parts performing the same operations as in FIG. 1 are assigned the same reference numerals as in FIG. 1 and their explanation is 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 for converting TV / CATV signals to intermediate frequency signals, and 27 and 29 are TV sets. A demodulation unit for demodulating a CATV intermediate frequency signal, 30 and 32 are tuner units for converting a BS-IF signal into a second intermediate frequency signal for satellite broadcasting, and 31 and 33 are demodulations for demodulating a second intermediate frequency signal for satellite broadcasting. Reference numeral 42 denotes a terrestrial TV signal and CATV signal input terminal, 43 denotes a BS-IF signal input terminal, and 44 and 45 denote output terminals.

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

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

FIG. 3 is a block diagram showing another specific example of the receiving section 4 shown in FIG. In this figure, parts performing the same operations as in FIG. 2 are assigned the same reference numerals as in FIG. 2 and their explanation is omitted. In addition, 40 and 41 are tuners for common use of BS / TV / CATV, 46 and 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 demodulated signal output terminal, 51 and 53 are satellite broadcast demodulated signal output terminals, 58 and 59 are channel selection signal input terminals,
Reference numeral 60 denotes an RF signal processing circuit including an input tuning filter, an amplification circuit, and an inter-stage tuning filter for terrestrial TV signals and CATV signals, and 61 denotes an RF signal including an input tuning filter, an amplification circuit, and an inter-stage tuning filter for BS-IF signals. 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, CAT
An intermediate frequency signal processing circuit for selecting and amplifying a band for an intermediate frequency signal of the V signal; 67, an intermediate frequency signal processing circuit for selecting and amplifying a band for a second intermediate frequency signal of satellite broadcasting;
Reference numeral 8 denotes a demodulation circuit for demodulating an intermediate frequency signal of a terrestrial TV signal or CATV signal, and reference numeral 69 denotes a demodulation circuit for demodulating a second intermediate frequency signal of satellite broadcasting. The BS / TV / CATV shared tuner 41 has exactly the same configuration as the BS / TV / CATV shared tuner 40, so that the configuration in the block is omitted in FIG.

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

Here, among the two BS / TV / CATV shared tuners 40 and 41, BS / TV / CAT is representative.
The V shared tuner 40 will be described. BS / TV / C
The ATV shared tuner 40 receives the terrestrial TV signal and the CATV signal.
A wide-band frequency conversion circuit 63 and a local oscillation circuit 64 so that variable continuous tuning is possible from the signal band to the BS signal band.
And selecting a frequency synthesizer circuit 65 for tuning when receiving a BS signal, when receiving a TV signal or when receiving a CATV signal,
This is a tuner that is shared by the above and simplifies the circuit.

That is, when a desired channel is received from a terrestrial TV signal and a CATV signal (about 90 to 770 MHz in Japan), the desired channel is selected from the signal input from the input terminal 46 by the RF signal processing circuit 60. PL according to the tuning signal input to the tuning signal input terminal 58
The tuning voltage output from the L frequency synthesizer 65 allows the signal to be 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 to an intermediate frequency (58 MHz band in Japan) with a local oscillation signal from a local oscillation circuit 64 capable of changing the oscillation frequency according to the tuning voltage and outputs the signal. . The intermediate frequency signal is further band-selected by an intermediate frequency signal processing circuit 66, amplified to a desired signal level, then demodulated into a video and audio signal by a demodulation circuit 68, and output via output terminals 50 and 44. .

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

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

When the receiving section 4 is configured as described above, the circuit scale of the receiving section 4 can be further reduced as compared with the specific example shown in FIG. 2, and the tuning control of the tuner can be simplified. The effect described above can be achieved.

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 console (that is, a remote controller, so-called remote controller), 71 is a transmission window, and 72, 73, 74, and 75 are operation buttons.

The operation buttons 72 and 73 are used to switch between the two systems of recording and reproduction. The operation of channel selection, recording and reproduction on the remote control console 70 is performed by pressing the operation button 72. 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 systems of recording and reproduction. However, a method of sequentially switching these with one button and a method of switching these with a switch instead of a button are provided. There may be.

The operation buttons 74 and 75 perform recording and reproduction simultaneously and alternately in two systems. For example, as described above,
This button is used to start recording from an arbitrary time while viewing a certain program being received, and to view the program from a point in time when the recording is started after an elapse of an arbitrary time. That is, by pressing the operation button 74, recording is started in one recording system from that point in time. Thereafter, by pressing the operation button 75, recording is terminated at that point in time, and at the same time, continuous recording is performed in the other recording system. After that, the video tape on which recording has been completed is rewound to the time when the operation button 74 is pressed, and playback is started on one of the playback systems. At the same time that recording on the recording system ends, recording starts on the other recording system.
The video tape on which the recording has been completed is rewound to the point where the recording is started, the reproduction is started by the other reproduction system, and the same operation is repeated thereafter.

In this specific example, 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 and playback systems of the system, and furthermore, start recording from an arbitrary time while watching a certain program being received with a simple operation, and start recording after an arbitrary time has elapsed. You can watch the program.

FIG. 5 is a block diagram showing a multi-channel recording / reproducing apparatus according to 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 performing the same operations as in the first embodiment shown in FIG. 1 are assigned the same reference numerals as those in FIG. 1 and their explanation is omitted. In addition, 16 is a signal processing unit for synchronizing and outputting two signals inputted asynchronously, and 17 is a mechanism system for controlling mounting and running of one video tape.

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

In the selecting section 5, the 2 output from the receiving section 4
One signal (that is, two selected programs) and a signal (one program) input from the external signal input terminal 3 are input, respectively. The two programs are selected according to the control signal output from the control unit 14 based on the channel selection information input from the input unit 15 as desired by the user, and are respectively output to the signal processing unit 16 as signals.

Then, the signal processing section 16 synchronizes the two input signals and inputs them to the recording sections 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 a single video tape mounted and running by the mechanism 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, as described above, two signals are recorded on each track by two recording magnetic heads on one video tape.

Accordingly, as described above, a certain program of terrestrial TV broadcasting or CATV broadcasting and a certain program of satellite broadcasting can be simultaneously recorded on one video tape, and further, a certain program of terrestrial TV broadcasting or CATV broadcasting can be recorded. A program and another program can be simultaneously recorded on one video tape, or a certain program and another program of a satellite broadcast program can be simultaneously recorded on one video tape.

Here, the signal processing section 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 and 162 input terminals, 163 and 164 are output terminals, 165 and 166 are synchronization extraction circuits, 167 is a memory,
168 is a memory write timing generation circuit;
Reference numeral 9 denotes a circuit for generating a read timing from the memory.

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

Next, a case where two programs are reproduced simultaneously will be described. 2 recorded on one running video tape mounted by the mechanism system 17
The two signals are simultaneously reproduced by the reproducing magnetic heads of the reproducing units 10 and 11, respectively, and input to the output control unit 12.

The output control unit 12 controls the control unit 1 based on output information input from the input unit 15 as desired by the viewer.
The image and audio signals are output from the signal output terminal 13 in accordance with the control signal output from the control signal 4.

Accordingly, two programs recorded on one video tape can be simultaneously reproduced.

Next, a case where recording and external display are performed simultaneously will be described. The selection unit 5 receives two signals output from the reception unit 4 (that is, the two selected programs) and a signal input from the external signal input terminal 3 (one program). From the three programs corresponding to each signal, one program is selected according to a control signal output from the control unit 14 based on channel selection information input from the input unit 15 as desired by the viewer, For example, the program is output to the recording unit 6 as a signal, and one program is separately selected and output to the output control unit 12 as a signal.

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

Accordingly, as described above, while a certain program of the terrestrial TV broadcast or the CATV broadcast is displayed on an external television receiver or the like, simultaneously, the terrestrial TV broadcast or the CTV broadcast is displayed.
Record other programs of ATV broadcasting, or
While displaying a certain program of satellite broadcasting on an external television receiver or the like, it is possible to simultaneously record another program of satellite broadcasting.

As described above, according to this embodiment,
It can receive terrestrial TV broadcasts, CATV broadcasts and satellite broadcasts, and simultaneously records multiple channels on a single video tape, reproduces them simultaneously, and records and displays externally as desired by the viewer. Or at the same time. Also, since it has only one mechanism system, the number of components is small and the mechanism scale is small. Further, since two input signals are recorded in synchronization, two signals are reproduced during reproduction. The common servo control can be used for the mechanism system 17, and there is also an effect that the reproducing unit can be simplified.

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

A television receiver 8 with a built-in recording / reproducing device
0 has the same configuration as that of the embodiment shown in FIG.
Then, 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.

When the operation button 82 corresponding to the operation button 74 is pressed, recording is started in one of the recording systems from that point in time. After that 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 recording / reproducing apparatus built-in television receiver 80 performs recording. Power supplies other than necessary parts may be cut off.

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

As described above, the power consumption during this operation can be reduced. Note that the above-described configuration and operation can be applied not only to the case where the recording / reproducing device is incorporated in the television receiver but also to the case where the recording / reproducing device and the television receiver are independent. That is, from the time the operation button 82 is pressed to the time the next operation button 83 is pressed, the power supply of the recording / reproducing apparatus is kept on, 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 configuration as the conventional recording / reproducing apparatus (that is, only one recording / reproducing system).
In the case of, when the operation button 82 is pressed, recording is started in the recording system from that point in time, and then, when the operation button 83 is pressed, the recording is terminated at that point in time, and the video tape on which the recording has been completed. Is rewound to the point in time when 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 point when the operation button 83 is pressed can be viewed.
Pressing the record button to start recording, stopping recording with the stop button, pressing the rewind button, pressing the stop button again, and pressing the play button, or recording operation to set the start and end time of recording Operation) is significantly simpler than the above.

In the operation described above, when the video tape is rewound to the point at which the operation button 82 is pressed, the detection of the point at which the operation button 82 is pressed is performed in advance when recording the video tape. The index signal is recorded when the button 82 is pressed, and the index signal is detected by detecting the index signal when rewinding.

In the above operation, when the operation button 83 is pressed, the recording is terminated at the time when the operation button 83 is pressed, and
The video tape whose recording has been completed is rewound to the point in time when the operation button 82 is pressed, and playback is started in the playback system. Alternatively, the operation button 83 is pressed one or more times in succession. Then, the recording is stopped, and the video tape on which the recording is stopped is rewound by 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, if it is rewound for 5 seconds, if it is pressed N times, it will be rewound for 5N seconds. ), Reproduction may be started in the reproduction system.

In the case where the operation is performed in this manner, for example, when the viewer presses the operation button 82 to record a certain program on a videotape and simultaneously watch the program, the user is watching the program. If the viewer desires to immediately watch the scene again, the viewer stops pressing the operation button 83, for example, three times.
The video tape is rewound for 15 ([5 seconds] × [3 times]) seconds, the reproduction is started, and the viewer can see the scene that was being viewed immediately before pressing the operation button 83 again. Then, when the viewer presses the operation button 82 again, the recording is started again from that point in time, and the above operation can be performed again.

Therefore, as described above, when watching,
Only the desired time (but less than the pre-recorded time) makes it possible to re-view the previous part.

The recording / reproducing apparatus in the television receiver 80 with a built-in recording / reproducing apparatus shown in FIG. 8 is not the same in configuration as the conventional recording / reproducing apparatus, but has the same configuration as the embodiment shown in FIG. In this case, even after the operation button 83 is pressed once or more, the program can be continuously recorded in another recording system. Therefore, the stopped videotape is proportional to the number of times the operation button 83 is pressed. While rewinding for hours, and during subsequent playback,
Continuous recording can be performed without interruption.

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

FIG. 9 is an explanatory diagram showing an example in which the remote control console shown in FIG. 4 is used as an input section of a recording / reproducing apparatus and a CATV home terminal linked therewith. In the figure, 84 is a television receiver, 85 is a recording / reproducing device, 86 is a CATV home terminal, 8
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 control console 87.

In this example, a recording / reproducing device 85 having the same configuration as the embodiment shown in FIG. 1 or the same configuration as the conventional recording / reproducing device, and a CATV home terminal 86 are connected by a control line. Both are linked with each other, and the remote control console 87 functions as an input unit of any of the recording / reproducing device 85 and the CATV home terminal 86.

The CATV home terminal 86 generally stores information such as the channel, start time, and end time for 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
6, the recording / reproducing device 85 is configured to
The information stored in the ATV home terminal 86 can be used.

That is, when the operation button 82 is pressed, the recording / reproducing device 85 starts recording from that point in time, and then presses the operation button 83 to end recording at that point in time. The tape is rewound to the point where the operation button 82 is pressed, and playback is started.
If the operation button 83 is not pressed even though the program to be recorded has already been completed, a program that does not need to be recorded will also be recorded.

In this example, since the CATV home terminal 86 recognizes the program being received, pressing the operation button 82 causes the CATV home terminal 86 to record on the recording / reproducing device 85. Is derived based on the stored information, and if the operation button 83 is not pressed by the derived end time, the time at which the end time is reached (that is, the recording time is reached) At the end of your program)
The recording / reproducing device 85 is instructed to end the recording via the control line, and the recording / reproducing device 85 ends the recording according to the instruction, and rewinds the video tape on which the recording is completed until the operation button 82 is pressed. It works to wait.

As a method of causing the recording / reproducing device 85 to recognize that the recording program has ended from the CATV home terminal 86, as described above,
The CATV home terminal 86 may instruct the recording / reproducing device 85 via the control line, or a signal to be recorded from the CATV home terminal 86 to the recording / reproducing device 85 without providing a control line. (Video and audio signals) are input, so that the CATV home terminal 86 is provided with a function of interrupting the signal input to the recording / reproducing device 85 when the received program ends, and the 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 interlocking with the CATV home terminal 86.
Only the desired program can be recorded with a simple operation.

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

In each of the embodiments described above, the number of signals that can be simultaneously recorded or reproduced has been described as two, but the same effect can be obtained in the case of two or more.

[0089]

According to the present invention, in a recording / reproducing apparatus such as a video tape recorder, various broadcasts can be received.
In addition, a plurality of channels can be simultaneously recorded or reproduced at the same time as desired by the viewer. Also, recording and external display can be performed simultaneously. That is, for example, while a certain program of terrestrial TV broadcast or CATV broadcast is displayed on an external television receiver or the like, another program of terrestrial TV broadcast or CATV broadcast is simultaneously recorded, or a certain program of satellite broadcast is reproduced. While displaying the program on an external television receiver or the like, other programs of satellite broadcasting can be recorded at the same time.

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

Further, 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 tuning control of the tuner can be simplified.

[Brief description of the 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 an input unit shown in FIG. 1;

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 a signal is recorded in the second embodiment.

FIG. 7 is a block diagram illustrating a specific example of a signal processing unit 16 illustrated in FIG. 5;

8 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 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 section of a recording / reproducing apparatus and a CATV home terminal interlocked 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 ... reproduction unit, 12 ... output control unit, 13 ... signal output terminal, 14 ... control unit, 15 ...
Input unit, 40, 41: Tuner shared by BS, TV and CATV, 70, 81, 87: Remote console.

Continued on the front page (72) Inventor Toshinori Murata 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Pref.Hitachi, Ltd.Image Media Research Laboratory (72) Inventor Kenji Katsumata 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi, Ltd. Video Media Research Laboratory (72) Inventor Hisanori Tajima 292 Yoshidacho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Hitachi, Ltd. Video Media Research Laboratory (56) References JP-A-3-21179 (JP, A) JP-A Heisei 6-245157 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04N 5/44 H04N 5/91-5/956

Claims (4)

(57) [Claims] At least two recording media mounted on each of the recording media
A mechanism means, during recording, enter at least two signals, these signals
At least two of a plurality of programs constituting
Select one program and output each as a signal
The selection means and the mechanism means correspond one-to-one with each other, and at the time of recording.
The recording medium mounted on the corresponding mechanism means,
Recording at least the signals output from the means
The two recording means and the mechanism means correspond one-to-one with each other, and at the time of reproduction.
At the same time, the recorded
At least 2 for reproducing and outputting each of the signals
One of the reproducing means, output from each of said at least two reproducing means
Output means for generating and outputting one signal from the signal;
Comprising a, by a first control signal from a user, said at least two
One of the two recording means starts recording,
Then, at the same time when the recording is terminated by the second control signal,
Start the subsequent recording with the other recording means, and
Return the completed recording medium to the point when the first control signal is pressed.
To reproduce one of the at least two reproducing means.
Playback is started by live means, and then playback ends for the recorded amount.
When the recording is completed, the recording by the other recording means is terminated.
At the same time, when recording is started by the one recording means,
The recording medium on which recording has been completed is
And start playback by the playback means.
The same operation is performed until the third control signal to be terminated is applied.
Multi-channel recording / reproducing device characterized by repeating work
Place . 2. At least two recording media mounted respectively.
A mechanism means, during recording, enter at least two signals, these signals
At least two of a plurality of programs constituting
Select one program and output each as a signal
The recording means corresponds to the selecting means and the mechanism means one by one,
The recording medium mounted on the corresponding mechanism means,
Least for recording outputted from the means signal, respectively
The two recording means and the mechanism means correspond one-to-one with each other, and at the time of reproduction.
At the same time, the recorded
At least 2 for reproducing and outputting each of the signals
One of the reproducing means, output from each of said at least two reproducing means
Output means for generating and outputting one signal from the signal;
Comprising a, by a first control signal from a user, said at least two
One of the two recording means
After recording the recording start index signal,
Start recording, and then end recording with the second control signal
At the same time as recording the index signal at the end of recording.
And record the index signal of the recording start with the other recording means
After that, start recording the program continuously,
The recording medium on which recording has been completed is indexed to the recording start.
Return to the point at which the signal was recorded and
Start playback with one of the playback means,
Later, when the recording end index signal is detected
To end the recording by the other recording means and
A dex signal, and the one recording means
After recording the recording start index signal with
Recording of the recording medium is started, and the recording medium on which recording has been completed is recorded on the recording medium.
Return to the time when the start index signal was recorded and
The reproduction is started by the raw means, and thereafter, the operation is terminated.
Repeat the same operation until the control signal of 3 is applied.
And a multi-channel recording / reproducing apparatus. 3. At least two recording media mounted respectively.
A mechanism means, during recording, enter at least two signals, these signals
At least two of a plurality of programs constituting
Select one program and output each as a signal
The selection means and the mechanism means correspond one-to-one with each other, and at the time of recording.
The recording medium mounted on the corresponding mechanism means,
Recording at least the signals output from the means
The two recording means and the mechanism means correspond one-to-one with each other, and at the time of reproduction.
At the same time, the recorded
At least 2 is to reproduce and output respective signals are
One of the reproducing means, output from each of said at least two reproducing means
Output means for generating and outputting one signal from the signal;
Comprising a, by a first control signal from a user, said at least two
One of the two recording means starts recording,
Then, at the same time when the recording is terminated by the second control signal,
Start continuous recording of the program with the other recording means
At the same time, the returned recording medium is
According to the fourth control signal to be controlled, any of the recorded portions
Move it back to the desired position,
Playback is started by one of the playback means, and
After playback of the recorded data is completed,
At the same time when the recording by the means is completed,
Start recording at
Return to the point where recording started and start playback with the playback means
Thereafter, a third control signal for ending this operation is applied.
The same operation is repeated until the
Channel recording and playback device . 4. A mechanism for mounting a recording medium , and at least two signals are inputted at the time of recording, and these signals are inputted.
At least two of a plurality of programs constituting
Selection means for selecting one program and outputting it as a signal
And a phase of at least two signals output from the selection means.
A signal processor that can control the timing relationship
And the recording medium mounted on the mechanism means at the time of recording.
At least two signals output from the selector means.
After aligning the timing between signals by signal processing means,
At least two recording means for recording simultaneously;
At least two that reproduce and output at least two signals
And at least two signals output from the reproducing means.
Output means for generating and outputting one signal.
And the signal processing means inputs at least two signals output from the selection means.
Synchronization extraction circuit for extracting the synchronization signal from each of them
One of the at least two signals being input
A memory for temporarily storing the input signal of
From the synchronization signal extracted from the force signal,
A circuit for generating a write timing of one of the input signals;
The other of the at least two signals being input;
From the synchronization signal extracted from the force signal,
A circuit that generates the read timing of one input signal
And a multi-channel recording / reproducing apparatus .