KR19990056454A - Audio dubbing device of video cassette recorder - Google Patents

Abstract

The present invention relates to an audio dubbing apparatus of a video cassette recorder for performing a dubbing operation of an audio signal output from another external device during reservation recording.

To this end, the present invention provides a video cassette recorder having a plurality of DC supply outlets on a top surface thereof, in which a plurality of external devices are connected to the DC supply outlets in a state in which a plurality of external devices having different voltages and different reservation recording functions are connected. It is a dubbing mode for recording audio signal of the device, and if the type of audio signal to record by time is different, it is configured to supply the required voltage to the corresponding external device to record the audio signal of the corresponding external device according to the preset time. do.

Therefore, the present invention has the effect of selectively recording a desired audio signal among audio signals of a plurality of external devices.

Description

Audio dubbing device of video cassette recorder

The present invention relates to a reservation recording apparatus of a video cassette recorder, and more particularly, to an audio dubbing apparatus of a video cassette recorder for performing a dubbing operation of an audio signal output from another external device during reservation recording. will be.

In general, the dubbing operation refers to an operation of recording only an audio signal after recording an image signal once, in which the video processing system performs a playback mode and the audio processing system performs a recording mode. At this time, the audio processing system records the audio track while erasing only the audio track.

The video cassette recorder records a composite video signal applied from a tuner that tunes the broadcast signal received through the antenna to a desired channel on a magnetic tape, and reproduces the composite video signal recorded on the magnetic tape. Has a playback function to display on the monitor.

In addition, the video cassette recorder has a reserved recording function, which is an advantageous function of automatically recording a broadcast program desired by the user in the absence of the user so that the user can play and watch it at a desired time.

However, in the case of an electronic device such as a recorder which is automatically played when only power is input, there is no reservation recording function as described above.

Meanwhile, as shown in FIG. 1, there is a video cassette recorder configured to be connected to a plurality of external devices by attaching a plurality of DC supply outlets to a predetermined portion of the body.

The present invention has been made as described above, an object of the present invention is to connect to an electronic device without a reservation recording function and a video cassette recorder having a plurality of direct current (DC) supply outlets to perform a reservation recording function, The present invention relates to an audio dubbing apparatus of a video cassette recorder for selecting and recording an audio signal of an external device desired by a user among external devices connected to a plurality of DC supply outlets.

The present invention for achieving the above object is a video cassette recorder having a plurality of direct current (DC) supply outlets in a predetermined portion of the audio signal of the plurality of external devices connected to the plurality of DC supply outlets, respectively, the desired audio An audio dubbing apparatus for selectively dubbing a signal, the audio dubbing apparatus comprising: a power supply unit which regularly supplies DC power required at a load end; If the mode for dubbing audio signals of the plurality of external devices and the type of audio signal to be recorded for each preset time is set, the audio signal of the corresponding external device among the plurality of external devices can be recorded for each preset time. A control unit which controls to supply a required voltage to a corresponding external device, and records the corresponding audio signal among the audio signals of the plurality of external devices on a magnetic tape; A relay switch configured to provide a voltage of an output terminal corresponding to a control of the controller among DC voltages supplied from a plurality of output terminals of the power supply unit to a corresponding DC supply outlet of a plurality of DC supply outlets; And an audio signal recorder that selects and records an audio signal provided through a line from the external device under the control of the controller when the DC power is supplied to the external device by the DC supply outlet.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

1 is a perspective view of a video cassette recorder having a plurality of DC supply outlets attached to an upper surface thereof;

2 is a block diagram showing the configuration of an audio dubbing apparatus of a video cassette recorder according to the present invention.

<Description of the symbols for the main parts of the drawings>

10: power supply 20: relay switch

30: DC supply outlet 40: control unit

50: audio signal recorder 100: external device

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

1 is a perspective view of a video cassette recorder having a plurality of DC supply outlets attached to an upper surface according to the present invention. In the present invention, a plurality of DC supply outlets and external devices attached to the upper surface thereof, for example, are automatically input when only power is input. Connect the power cords of multiple external devices without a scheduled recording function such as a cassette player or compact disc player to be played, and connect the audio input terminal of the video cassette recorder and the output terminal of the external device via a line, and then make a reservation. When the recording start time comes, the video cassette recorder supplies power required by each external device to the corresponding external device using a DC supply outlet so that the audio signal of the desired external device can be selected and dubbed to the video cassette recorder.

At this time, as shown in the figure, a line is connected between the video cassette recorder and each external device, so that when the external device is powered, the audio signal of the external device can be supplied to the video cassette recorder.

Fig. 2 is a block diagram showing the configuration of an apparatus for dubbing audio signals of a plurality of external devices without a reservation recording function to a video cassette recorder according to the present invention, wherein the power supply unit 10, the relay switch 20, The DC supply outlet 30, the control part 40, and the audio signal recorder 50 are comprised.

At this time, the audio signal recorder 50 includes a broadcast audio signal processor 51, a first line audio signal processor 52, a second line audio signal processor 53, a switch 54, a head amplifier 55, It consists of a head 56.

As is well known, the power supply unit 10 is configured to regularly supply the power required at the load stage by selectively transferring the power accumulated on the primary side of the transformer 11 to the secondary side using the switching unit. .

The controller 40 performs a reservation recording function and an audio dubbing operation according to the reservation recording information input through a key input unit (not shown). That is, the controller 40 performs a dubbing mode for recording the scheduled recording start time of the reserved recording information and records an audio signal of the external device, and the dubbing mode is one of the plurality of external devices depending on the time of the audio signals of the plurality of external devices. If a mode for selecting an audio signal of the corresponding external device is set, a control is performed to supply a voltage required by a plurality of external devices.

For example, when the dubbing mode setting according to the reserved recording information is a total recording time of 1 hour 30 minutes, the audio signal of the first external device 110 is selected and recorded from the scheduled recording start time until 30 minutes, and then the If the time is set to record broadcast audio signals from time to 30 minutes, and then select and record the audio signal of the second external device 120 from the time after that until the reserved recording end time, the controller 40 reserves the scheduled recording start time. To 30 minutes, the relay switch 20 is controlled to supply the voltage required by the first external device 110, and from that time on until 30 minutes, the voltage is not supplied, and the last 30 of the total recording time The minute controls the relay switch 20 to supply the corresponding voltage to the second external device 110.

At this time, the relay switch 20 is switched to the corresponding output terminal of the plurality of output terminals of the power supply unit 10 to supply the voltage required for the current recording time under the control of the control unit 40 as described above, The voltage is provided to a corresponding DC supply outlet of the plurality of DC supply outlets 30.

Therefore, the DC supply outlet 30 supplies power to the connected external device 400 when DC power is supplied through the relay switch 20.

For example, when the first DC supply outlet 31 is a 6V voltage outlet and the first external device 110 connected to the first DC supply outlet 31 requires a voltage of 6V, the relay switch 20 When a voltage of 6V is provided to the first DC supply outlet 31 through the first DC supply outlet 31 is supplied to the first external device 110, as described above, the audio input terminal and the first input of the video cassette recorder. Since a line is connected between the audio output terminals of the external device 110, the first external device 110 provides an audio signal to the first line audio signal processor 52 of the audio signal recorder 50.

Then, the first line audio signal processor 52 processes and provides an audio signal of an external device provided through the line under the control of the controller 40.

At this time, since the operation of the second external device 120 connected to the second DC supply outlet 32 is also the same as the operation of the first external device 110 described above, a description thereof will be omitted.

As described above, the control unit 40 switches the switching terminal of the switching unit 54 for each preset time unit when the dubbing mode is set to record an audio signal of the corresponding external device among the plurality of external devices as described above. Let's do it.

For example, as described above, if the dubbing mode is set for recording the audio signal of the first external device from the scheduled recording start time to 30 minutes, the controller 40 controls the audio signal of the first line audio signal processor 52. Switch the switching terminal (d) of the switching unit 54 to the (b) terminal side so that the audio signal of the first line audio signal processing unit 52 is provided to the head amplifier 55 so that In the last 30 minutes, the switching terminal d of the switching unit 54 is switched to the terminal (a) so that the audio signal of the broadcast signal of the reserved channel can be recorded, and the second line audio signal processing unit ( The switching terminal d of the switching section 54 is switched to the (c) terminal side so as to record the audio signal of 53).

In this way, the switching unit 54 is switched to switch under the control of the control unit 40 to provide the corresponding audio signal to the head amplifier 55, the head amplifier 55 is an audio signal output through the switching unit 54 Is amplified and provided to the head 56, and the head 56 records the line audio signal provided by being amplified by the head amplifier 55 on the magnetic tape.

As described above, the audio dubbing apparatus of the video cassette recorder according to the present invention is a video cassette recorder having a plurality of DC supply outlets on its upper surface, and each of the DC supply outlets has a plurality of required voltages different from each other and does not have a reserved recording function. When the external device is connected, the dubbing mode for recording the audio signal of the external device and if the type of audio signal to record by time is different, the audio signal of the external device can be recorded according to the preset time. By supplying the required voltage to the corresponding external device, the user can selectively record the desired audio signal among the audio signals of the plurality of external devices.

While the invention has been shown and described with respect to certain preferred embodiments, it will be apparent to those skilled in the art that various modifications, changes and omissions can be made without departing from the spirit and scope of the invention.

Claims (2)

An audio dubbing apparatus for selectively dubbing a desired audio signal among audio signals of a plurality of external devices respectively connected to the plurality of DC supply outlets in a video cassette recorder having a plurality of DC supply outlets attached to a predetermined portion. , A power supply unit which regularly supplies the DC power required at the load end; If the mode for dubbing audio signals of the plurality of external devices and the type of audio signal to be recorded for each preset time is set, the audio signal of the corresponding external device among the plurality of external devices can be recorded for each preset time. A control unit which controls to supply a required voltage to a corresponding external device, and records the corresponding audio signal among the audio signals of the plurality of external devices on a magnetic tape; A relay switch configured to provide a voltage of an output terminal corresponding to a control of the controller among DC voltages supplied from a plurality of output terminals of the power supply unit to a corresponding DC supply outlet of a plurality of DC supply outlets; An audio dubbing apparatus of a video cassette recorder including an audio signal recorder for selecting and recording an audio signal provided through a line from an external device when the DC power is supplied to the corresponding external device by the DC supply outlet; . The audio signal recorder of claim 1, A broadcast audio signal processor configured to process and provide an audio signal among broadcast signals of a channel for reserved recording; A first line audio signal processor configured to process and provide an audio signal output from the first external device through a first line; A second line audio signal processor configured to process and provide an audio signal output from the second external device through a second line; A switching unit selectively switching switching under the control of the controller to provide a corresponding audio signal; A head amplifier for amplifying and providing an audio signal provided through the second switching unit; And a head for recording an audio signal provided through the head amplifier.