JPH0478047A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To make a recording and reproducing device in which reproducing is not performed in a low power consumption state where a power source is turned off by providing an output signal changeover switch which follows turning on/off the power source. CONSTITUTION:At the end of a video or at the end of a tape after a reproducing state is kept, a control signal is outputted to an external control signal output terminal 12 and a VTR 17 is rewound after it is stopped. When the beginning of the tape comes, the power source of the VTR 17 is turned off after the VTR 17 is stopped. Then, the switches 18 and 19 are switched by turning on/off the power source of the VTR 17. When the power source is turned on, output signals from a video circuit 9 and a sound circuit 10 are respectively outputted from signal output terminals 13 and 15 and when the power source is turned off, input signals to a video signal input terminal 14 and a sound signal input terminal 16 are respectively outputted from the output terminals 13 and 15. Thus, the VTR 17 in a standby state is made in the low power consumption state by turning off the power source.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a magnetic recording and reproducing device that uses a plurality of decks and has a continuous playback function that automatically puts the other decks into the playback state after one deck has finished playing. Regarding.

2. Description of the Related Art In recent years, there has been an increasing demand for continuous reproduction of audio or video and audio for a long period of time.

An example of a video tape recorder (hereinafter abbreviated as VTR) will be explained below.

Conventional recording and reproducing devices with continuous playback function include the one shown in Figure 2. In the figure, 1 is a power supply circuit that supplies power to the VTR main body, 2 is a power supply circuit that supplies power to the VTR main body, and 2 is a
A timer playback control circuit that outputs a playback command to the travel control circuit, 3 is a ○N10FF switch for operating the timer playback function, 4 is a detection circuit for the control signal stored on the video tape, and 6 is a control circuit that detects the output signal of the detection circuit 4. A circuit for detecting the end of the video tape, 6 a circuit for detecting the end of the videotape, 7 a running control circuit for controlling the running of the VTR, and 8 a running control circuit based on the output signal from the video end detecting circuit 5 or the tape end detecting circuit 6. A VTR control signal output circuit outputs commands such as playback, stop, rewind, etc. to circuit 7, 9 is a video circuit, 1o is an audio circuit, 11 is a control signal input terminal from outside the VTR, and 12 is a control signal to the outside of the VTR. Output terminal, 13
is a video signal output terminal, 14 is a video signal input terminal, 1
5 is an audio signal output terminal, 16 is an audio signal input terminal,
17 is the main body of the VTR.

Consisting of the above components, the mutual relationship and operation of each component will be explained below according to the diagram. First, the VTR 17 is connected to an AC power source (hereinafter referred to as a dedicated power source such as a DC power source for DC operating equipment). When the VTR 17 is put into the playback state while the power is turned on, the playback signal from the video circuit 9 is output from the video signal output terminal 13.
The reproduction signal of the audio circuit 10 is output from the audio signal output terminal 15.

During playback, the control signal recorded on the videotape is detected by the control signal detection circuit 4 at any time.
A control signal (for example, normally a high level changes to a low level) is output from the control detection circuit 4.

Then, the video end detection circuit 5 detects that the video is at the end based on the control signal from the control signal detection circuit 4, and outputs a control signal similar to the above (binary level of High and Low) to the VTR control signal output circuit 8. do. At the same time, a similar control signal is outputted from the external control signal output terminal 12 as one of the termination detection signals.

When the end of the video tape is reached, the tape end detection circuit 6 detects the end and outputs a control signal to the VTR control signal output circuit 8 and the control signal output terminal 12 as one of the end detection signal outputs to the outside. .

In the VTR control signal output circuit 8, a video end detection circuit 5.
Based on the control signal from the tape end detection circuit 6, a stop command is output to a travel control circuit 7 that controls the travel of the VTR, and then a rewind command is output.

It is possible to select whether to detect either or both of the output 'of the video end detection circuit 5 and the output of the tape end detection circuit 6.

The rewinding state continues, and when the beginning of the tape is reached, the VTR stops and enters standby.

Next, when a control signal is input through the control signal input terminal 11 while the VTR 17 is in a stopped state, first the VTR 17
If the VTR 17 is in the power-off state, the power supply circuit 1 automatically turns on the power to the VTR 17. Next VT
A reproduction command is output from the R control signal output circuit 8 to the traveling control circuit 7 of the -VTR 17, and the VTR 17 automatically enters the reproduction state.

This is one operation of the automatic regeneration means.

Note that when the VTR is in a stopped state, the video and audio signal output terminals 13.15 are connected to the respective signal input terminals 14.15.
16 signals are outputted through the video circuit 9 and the audio circuit 1o.

Next, when the VTR 17 is not connected to the AC power source and the function ○N10FF switch 3 is on,
When the power is connected, the timer regeneration control circuit 2 operates to automatically supply power to the VTR main body, and then outputs a regeneration command to the travel control circuit 7, and the VTR 17 enters the regeneration state. This is another operation of the automatic regeneration means.

When the function ○N/○FF switch 3 is OFF, the VTR 17 remains powered off even when the AC power is turned on.

Next, the operation when operating a plurality of VTRs will be explained using FIG. 3. In the figure, 20 is a monitor, and VTRs 1 and 2 are VTRs having the above configuration. The video and audio signal output terminals 13 and 15 of VTR1 are connected to the monitor.
The control signal output terminal 12 of VTR1 is connected to the control signal input terminal 11 of VTR2, and the control signal output terminal 12 of VTR2 is connected to VTR2.
The control signal input terminal 11 of the TI (+) is connected to the video and audio signal output terminals 13 and 15 of the VTR2, and the video and audio signal input terminals 14 and 16 of the VTR1 are respectively connected to the components having the same functions as in FIG. are given the same reference numerals.

VTRs 1 and 2 are each inserted with a continuous playback function, and the function ON/○FF switch 3 of VTR 1 is set to ON, the switch 3 of VTR 2 is set to OFF, and the VT
Both R1 and R2 are connected to a common AC power source and connected to an external AC timer, etc. First of all, AC? When the fi source is turned on, VTR2 remains powered off because switch 3 is off, but VTR1 is powered off due to the above operation.
At the same time as the power is turned on, power is supplied to the VTR main body and playback operation begins automatically. At this time, the video circuit 9 and the audio circuit 10 in FIG. 2 output playback signals to the monitor 20 through output terminals 13 and 15, respectively.

When the playback continues and the end of the video or tape is reached,
As described above, the VTR 1 enters a rewinding state after stopping playback, and outputs a control signal from the control signal output terminal 12. Since the output terminal 12 is input to the control signal input terminal 11 of the VTR 2, the VTR 2 automatically turns on and enters the playback state, and the playback signal is output from the video and audio signal output terminals 13 and 15. Once outputted to the monitor 20 via the VTR 1.

During playback, when the video or tape ends, the VTR2
After stopping, it enters the rewind state and outputs a control signal.
Output from Then, VTR1 first rewinds the tape, then
Since it is in the stopped state, it will be in the playback state again.

The above operation enables continuous playback operation with two VTRs.

Furthermore, the control signal output terminal of VTR2 is connected to the control signal input terminal of VTR3. The video and audio signal output terminal of VTR3 is connected to the signal input terminal of VTR2. The control signal output terminal of VTR3 is connected to the control signal input terminal of VTR4. By connecting the audio signal output terminals to the signal input terminals of the VTRs 3 in series one after another, continuous playback operation is possible with a plurality of VTRs.

Problems to be Solved by the Invention However, with the above configuration, during continuous playback operation -
When one VTR is playing, the other VTRs are powered on and stopped, which has the problem of wasting power.

In order to improve this problem, it is an object of the present invention to provide a recording and reproducing apparatus that has a continuous reproducing function that turns off the power and enters a low power consumption state at the beginning of the tape after rewinding.

Means for Solving the Problems In order to achieve the above object, the recording and reproducing apparatus of the present invention includes an automatic reproduction start means, an end detection signal output, and a low power consumption state in which the power is turned off when the main body operation is stopped. The external video and audio output signals are provided with switching means for switching the respective input signals to be directly output, and are configured to be capable of continuous reproduction.

The present invention has the configuration described above, in which the power of the VTR is turned off while it is on standby during continuous playback operation, and the input video and audio signals are switched by a switch and sent to the monitor, so that they can be played continuously with low power consumption. Enables playback operation.

Embodiment FIG. 1 shows an embodiment of the present invention. In the figure, the output signal to the video signal output terminal 13 is outputted from the video circuit 9, or input from the video signal input terminal 14. a switch 18 for switching whether to output the signal as is;
A switch 1 for switching between outputting the output signal from the audio signal output terminal 15 as the signal from the video circuit 1o, or outputting the input signal from the video signal input terminal 16 in its sweet form.
9, the switching state changes according to whether the power of the VTR 17 is turned on or off, as will be described later. Components having the same functions as those of the conventional example will be designated by the same reference numerals and descriptions will be omitted.

To explain its operation according to the diagram, as in the explanation of the conventional example, when a control signal is input through the control signal input terminal 11 while the VTR is in a stopped state, if the VTR 17 is in the power-off state, The power supply circuit 1 automatically turns on the power to the VTR, and the VTR control signal output circuit 8 outputs a reproduction command to the running control circuit 7 of the VTR 17, so that the VTR 17 automatically enters the reproduction state.

At this time, the reproduction signal of the video circuit e is transmitted to the video signal output terminal 13.
, the reproduction signal of the audio circuit 1o is input to the audio signal input terminal 15.
is output from.

When the playback continues and the end of the video or tape is reached,
As in the conventional example, a control signal is output to the external control signal output terminal 12, and after the VTR 17 is stopped, it enters a rewinding state.

When the rewinding state continues and the beginning of the tape is reached, the VTR 17 is automatically turned off after stopping.

Here, the switches 18 and 19 are switched to the side shown in the figure when the power of the VTR 17 is on, and to the side opposite to that shown when the power is off, so that when the power is on, the output signals of the video circuit 9 and the audio circuit 1o are are output from the signal output terminals 13 and 15, respectively, and when the power is off, power is not supplied to the video circuit 9 and the audio circuit 1o, so the output signals are not output. As a result, the input signals to the video signal input terminal 14 and the audio signal input terminal 16 are respectively output to the output terminal 13.
．． 16.

Next, when the VTR 17 is not connected to an AC power source and the function 0N10FF switch is in the on state,
When the power supply or dedicated power supply is connected, the VTR1
7 enters the playback state after the power is turned on.

When the function ON/○FFz switch is off, the operation after the AC power is turned on remains in the stopped state with the power turned off.

Next, to explain the operation using Fig. 3, the VTRI,
The cassette tape you want to play continuously is inserted in 2, turn on/○FF Nui 7f-3 on VTR1,
V T R2 (7) ON10FF Switch 3 BA OF
F, and make the AC power supply common to both VTR1 and 2.
Connect it to a timer. First, when the AC power is turned on, switch 3 of VTR 2 turns OFF, as in the conventional case.
Therefore, although the power remains in the off state, power is supplied to the main body of the VTR 1 and the VTR 1 automatically enters the playback state.

When the playback continues and the end of the video or tape is reached,
The VTR 1 outputs a control signal to the external control signal output terminal 12 in accordance with the above operation description, and enters the rewind state. When the beginning of the tape is reached, the VTR is automatically turned off after stopping.

At this time, the switches 18 and 19 that follow the power off are switched to the side shown in the figure during playback, so the output signals of the video circuit 9 and the audio circuit 10 are output from the output terminals 13 and 15, respectively. ing. In this way, turn off the power supply of the VTR after the operation is completed, and then switch 1 accordingly.
The function of switching between 8 and 19 is used as a switching means.

After the VTR1 has finished playing, follow the above operating instructions to
Since the control signal is output to 2, the receiver in turn outputs the control signal to V
After TR2 is automatically powered on, it enters the playback state. VTR
The video and audio output signals of VTR1 are input to the signal input terminals 14 and 16 of vTR1, respectively, and the input signals are input to the video fI! of VTR1. Circuit 9 and audio circuit 1
Even if power is not supplied to o, switch 18.19
is switched to the opposite side from that shown, so that each input evening signal is output directly to the monitor 20 through the terminals 13 and 15. In addition, in this case, as in the conventional example, VTRs 3 and 4
By connecting them in series, it is possible to perform continuous playback on multiple devices.

As described above, according to the present invention, by providing a switch that switches the video and audio output signals according to the on/off of the power supply, each input signal can be switched without supplying power to the VTR main body. You can directly output 100 numbers. This enables a continuous playback device that turns off the power and consumes less power when the VTR is in standby mode.

Although the above explanation has been given using the example of a VTR, it can also be implemented in a video recorder player, and if the video termination aspect ratio circuit 5 is replaced with an audio termination checker circuit, it can also be applied to an audio tape recorder and an audio recorder player. .

Also, there is no problem even if it is a reproduction-only machine.

Effects of the Invention As explained above, according to the invention, by providing an enclosure signal changeover switch that turns on and off the power, it is possible to connect multiple recording and reproducing devices with just a few cables. , without the user directly operating the deck, A
C-den? The start of the continuous playback function can be controlled by turning on and off the source, and the recording and playback device that is not playing can be turned off and put into a low power consumption state, avoiding unnecessary operations for four transfers of the device. The practical effect Di is large.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram of a conventional H self-recording and reproducing apparatus, and FIG. FIG. 3 is an explanatory diagram of continuous playback operation using a playback device. 1...Power supply circuit, 2...Timer regeneration control circuit, 3...Function ○N10FF Nuisochi, 4
...Control signal inspection circuit, 5...Video end detection concave path, 6...Tape end inspection circuit, 7...
...Travel control circuit, 8--VTR control signal Earth force circuit, 9--Video circuit, Otokichi circuit, 18 Image (elephant, force inertia C switching circuit, 19 Otonan output f ≦ Bow switching Sui Suino sheep i Burinto's name Masu Rishi and others 1

Claims (4)

[Claims] (1) Automatic playback start means that automatically supplies power to the main unit and starts playback by inputting an external control signal or connecting a power supply, and detects either the end of the video or the end of the tape, or both. When the circuit and its termination detection signal are output, and when the main unit stops operating, the power is turned off in a low power consumption state, and a selector switch that follows the power supply outputs each input signal to the outside as one or both of the video and audio signals to the amplifier. A recording/reproducing device comprising a switching means for switching to directly output without going through the. (2) The recording and reproducing apparatus according to claim 1, wherein the end detection signal output is an input of a control signal from the outside of another recording and reproducing apparatus. (3) The recording and reproducing apparatus according to claim 1, wherein one or both of the video and audio output signals are input signals to another recording and reproducing apparatus. (4) The recording/reproducing apparatus according to claim 1, wherein the tape is rewound after the end detection signal is output, and the power is turned off after the rewinding is completed.