JPH0575962A - Video signal recording and reproducing device - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to allow other video images to be viewed during recording or dubbing in a video signal recording / reproducing device such as a VTR or a video disc without using a switching device or the like. [Structure] First and second input changeover switches 31 and 32 for selecting either the output of the channel selection section 21 or the video signals from the input terminals 12 and 13, and the output of the first input changeover switch 31 are inputted and recorded. The recording / playback unit 22 to be played back and the playback output or the output of the second input selector switch 32 are independently selected and output for each of the two or more output terminals 14 and 15. During recording, it is possible to output signals other than the recorded signal, and even during reproduction, reproduction output and simultaneous output of other signals can be obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video signal recording / reproducing apparatus such as a VTR or a video disc.

[0002]

2. Description of the Related Art In recent years, video equipment has become widespread, and VT is available in one household.
Many video equipments such as several Rs, video disk players, satellite broadcast receivers, etc. are installed, and it has become common to switch between them for viewing.

Further, a video signal recording / reproducing apparatus such as a VTR can record / reproduce a television broadcast or reproduce a recorded tape as well as dubbing editing by combining two VTRs. It has become popular.

Conventionally, in such a case, the connection line is changed each time between viewing and listening by switching the video equipment and dubbing editing, or the connection state is changed by using a switch.

A conventional video signal recording / reproducing apparatus will be described below. FIG. 4 is a block diagram of this conventional video signal recording / reproducing apparatus. In FIG. 4, reference numeral 1 is a video signal recording / reproducing device. A broadcast wave signal guided by the antenna 2 connected to the antenna terminal 11 is converted into a video signal by the channel selection unit 21. The input selector switch 31 is used to output the channel selector 21 or input terminals 12, 13
Any of the signals from the above is selected and given to the recording / reproducing unit 22. The output changeover switch 35 selects the output of the recording / reproducing section 22 or the output of the input changeover switch 31 to select the output terminal 1
Output to 4 and 15. The input selector switch 31 and the output selector switch 35 are controlled by the controller 23.

The operation of the video signal recording / reproducing apparatus configured as described above will be described below.

First, the case of recording will be described. The signal to be recorded is guided to the recording / reproducing section 22 by switching the input selector switch 31 by a control signal from the control section 23, selecting an arbitrary signal. On the other hand, during recording, the control unit 23 switches the output selector switch 35 to the output side of the input selector switch 31, so that the same signal as the signal to be recorded is output from the output terminal 1.
It is output to 4, 15.

At the time of reproduction, the control unit 23 controls the output selector switch 3
Since 5 is switched to the output side of the recording / reproducing unit 22, the reproduced signal is output to the output terminal.

[0009]

However, in the above-mentioned conventional configuration, for example, when recording the signal of the tuning section 21, the recorded signal, that is, the output of the tuning section 21 is output to the output terminals 14 and 15. Input terminal 12
It is impossible to confirm the input signal by outputting the signal from the input terminal 13 or.

Further, since the same signal is output to the two output terminals 14 and 15, for example, at the time of reproduction, it is possible to obtain different outputs such that the reproduction signal is the output terminal 14 and the channel selection signal is the output terminal 15. It had a problem that it could not be done.

The present invention solves the above-mentioned conventional problems. When recording, it is possible to output a channel selection section or an input signal regardless of the signal to be recorded, and at the time of reproduction, in addition to the reproduction signal, the channel selection section or the input signal. It is an object of the present invention to provide a video signal recording / reproducing device capable of outputting a video signal.

[0012]

In order to achieve this object, a video signal recording / reproducing apparatus of the present invention comprises a channel selecting section for receiving a broadcast wave and outputting a video signal, one or more input terminals, and the above selection. A first input changeover switch and a second input changeover switch for selecting either the local output or the video signal from the input terminal, and the output of the first input changeover switch are input and recorded, and a reproduction signal is reproduced at the time of reproduction. A recording / playback unit for outputting
One of the two or more output terminals, the reproduction output of the recording / reproducing unit, or the output of the second input changeover switch is independently selected by an output changeover switch provided for each output terminal, and the output terminal is selected. Configure to output.

According to the present invention, a channel selecting section for receiving a broadcast wave and outputting a video signal, one or more input terminals, an output of the channel selecting section and a video signal from the input terminal are selected. A 1-input change-over switch and a second input change-over switch, a recording / reproducing section for inputting and recording the output of the first input change-over switch, and outputting a reproduction signal during reproduction, two or more output terminals, and the recording section. Either the reproduction output of the reproducing unit, the output of the input changeover switch, or no signal is independently selected by the output changeover switch provided for each output terminal and output to the output terminal.

According to the present invention, a channel selecting section for receiving a broadcast wave and outputting a video signal, one or more input terminals, an output of the channel selecting section and a video signal from the input terminal are selected. A 1-input change-over switch and a second input change-over switch, a recording / reproducing section for inputting and recording the output of the first input change-over switch, and outputting a reproduced signal during reproduction, two or more output terminals, and a video signal. Of the signal generating section for generating and outputting the signal, the reproduction output of the recording / reproducing section, the output of the input selecting switch, or the output of the signal generating section by an output selecting switch provided for each of the output terminals. It is configured to be selected and output to the output terminal.

[0015]

According to the present invention, since two sets of input signal changeover switches and an independent output changeover switch are provided for each output terminal according to the above-described structure, the channel selection section or the input signal is selected regardless of the signal to be recorded at the time of recording. It is possible to output, and at the time of reproduction, in addition to the reproduction signal, the reproduction signal or the signal of the channel selection unit, the input signal, the no signal, and the signal generation unit can be output.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A video signal recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of a video signal recording / reproducing apparatus according to the first embodiment of the present invention. Figure 1
4 is different from that shown in FIG. 4 in that a second input changeover switch 32 is provided in parallel with the input changeover switch 31, and output changeover switches 33 and 34 are provided for the output terminals 14 and 15 instead of the output changeover switch 35. That is.

The operation of the video signal recording / reproducing apparatus configured as described above will be described below. In a normal state in which neither recording nor reproducing is performed, the control unit which operates upon receiving an input selection command switches both the output changeover switches 33 and 34 to the output side of the input changeover switch 32, and the input changeover switch 3
1, 32 are interlocked and the same one is selected. As a result, the selected signal is output. When recording, keep all switches as they are. During reproduction, both output selector switches 33 and 34 are switched to the output side of the recording / reproducing unit 22. By doing so, first, the same operation as the conventional one can be performed. From that state, during recording, by operating only the input selector switch 32, regardless of the signal to be recorded selected by the input selector switch 31, the output of the channel selection unit 21 or the input terminals 12 and 13 are irrelevant.
It is possible to output the input signal from the output terminals 14 and 15 and monitor it. Output switch 33 during playback
By switching the input selector switch 32 and the input selector switch 32, it is possible to monitor the output terminal 14 by selecting the reproduction signal, the channel selection section or the input signal while outputting the reproduction signal to the output terminal 15.

FIG. 2 is a block diagram of a video signal recording / reproducing apparatus showing a second embodiment of the present invention. The difference from FIG. 1 is that the output changeover switches 33 and 34 are configured so that no signal can be selected. The operation is similar to that of FIG. 1, but as a typical example of use, the output terminal 14 is connected to the television 3
, And the output terminal 15 is connected to the input terminal 16 of the other video recording / reproducing apparatus 4 and the output terminal 17 of the video recording / reproducing apparatus 4 is connected to the input terminal 12 for use. When the input terminal 12 is selected by the changeover switch 32, the input / output terminal 15 changes from the output terminal 15 to the video recording / reproducing apparatus 4.
Since a positive feedback loop that returns to the input terminal 12 via the path is generated and oscillates, only in such a case, the output selector switch 34 can be switched to a non-signal so that the positive feedback loop does not occur. .. During reproduction, a reproduction signal is output to the output terminal 15 to perform dubbing from the recording / reproducing apparatus 1 to the recording / reproducing apparatus 4, while the output selector switch 3
3 is switched to the output of the input selector switch 32, and the input selector switch 32 is switched to the channel selecting section 21, so that the television 3 can see the image of the channel selecting section.

FIG. 3 is a block diagram of a video signal recording / reproducing apparatus showing a third embodiment of the present invention. The difference from FIG. 2 is that the output changeover switches 33 and 34 are configured so that the output signal of the signal generator can be selected instead of no signal. The operation is the same as that in FIG. 2, but in order to prevent the screen from becoming a noise screen when a frequency with no broadcast is selected by the channel selection unit, for example, a screen of solid blue can be output. This detects a noise signal at the output of the input changeover switch 32, and outputs the output changeover switch 33 to the signal generator 36.
It can be done by switching to. Further, instead of making the signal null in order not to generate a feedback loop, this signal generator 36
Can be used.

Although the signals to be recorded / reproduced in the above embodiments are video signals, the same applies to audio signals.

[0022]

As described above, according to the present invention, two sets of input signal changeover switches and an independent output changeover switch for each output terminal are provided. Therefore, at the time of recording, regardless of the signal to be recorded, the channel selection section or the input section is selected. It is possible to output a signal, and at the time of reproduction, in addition to the reproduction signal, it is possible to output a reproduction signal or a signal of a tuning section, an input signal, a no signal, a signal generation section, etc. You can watch,
Its practical effect is great.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a video signal recording / reproducing apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a video signal recording / reproducing apparatus according to a second embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a video signal recording / reproducing apparatus according to a third embodiment of the present invention.

FIG. 4 is a block diagram showing a configuration of a conventional video signal recording / reproducing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 video signal recording / reproducing apparatus 21 channel selection section 22 recording / reproducing section 23 control section 31 first input changeover switch 32 second input changeover switch 33, 34 output changeover switch 36 signal generation section

Claims (3)

[Claims] 1. A tuning unit that receives a broadcast wave and outputs a video signal, one or more input terminals, and a first input switch that selects one of the output of the tuning unit and the video signal from the input terminal. A switch and a second input selector switch, a recording / reproducing unit for inputting and recording the output of the first input selector switch, and outputting a reproduction signal during reproduction, two or more output terminals, and a recording / reproducing unit of the recording / reproducing unit. A video signal recording / reproducing apparatus characterized in that either the reproduction output or the output of the second input changeover switch is independently selected by an output changeover switch provided for each of the output terminals and output to the output terminal. 2. A channel selection unit that receives a broadcast wave and outputs a video signal, one or more input terminals, and a first input switch that selects one of the output of the channel selection unit and the video signal from the input terminal. A switch and a second input selector switch, a recording / reproducing unit for recording and reproducing the output of the first input selector switch, two or more output terminals, a reproduction output of the recording / reproducing unit, or the input selector switch. The video signal recording / reproducing apparatus is characterized in that either the output or the non-signal is independently selected by an output changeover switch provided for each of the output terminals and is output to the output terminal. 3. A channel selection unit that receives a broadcast wave and outputs a video signal, one or more input terminals, and a first input switch that selects one of the output of the channel selection unit and the video signal from the input terminal. A switch and a second input selector switch, a recording / reproducing unit for inputting and recording the output of the first input selector switch, and outputting a reproduction signal during reproduction, two or more output terminals, and a video signal generator. The signal generating section to be output, the reproduction output of the recording / reproducing section, the output of the input selecting switch, or the output of the signal generating section is independently selected by an output selecting switch provided for each output terminal. Then, the video signal recording / reproducing apparatus is characterized by outputting to the output terminal.