KR20000021637A - Method for recording audio/video signal of vcr - Google Patents

Abstract

PURPOSE: A method for recording audio/video signal of VCR is provided to decrease a unnecessary recording operation time by automatically stopping the operation of a recording deck and a reproducing deck when an audio/video signal is reproduced and recorded in a recording video tape. CONSTITUTION: An original video tape for reproduction is inserted into a first deck for an A/V reproduction and a magnetic recording medium is inserted into a second deck for an A/V recording(S101). It is judged as to whether a reproducing signal is inputted to the first deck for an A/V reproduction and a recording signal is inputted to the second deck for an A/V recording(S102). An audio signal and video signal recorded in the recording medium is reproduced when the first deck is converted into a reproducing mode and the second deck is converted into a recording mode(S103). A synchronization of the audio and video signal is detected(S104) and it is judged as to whether the synchronization is detected(S105). The reproduced audio and video signal is recorded in a video tape of the second deck when the synchronization is detected(S106). A recording operation is stopped when the synchronization is not detected(S107,S108).

Description

How to record V / R audio / video signal

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video cassette recorder (hereinafter referred to as a VCR). In particular, when a video tape of a VCR having a double deck is recorded, a sync is detected for a predetermined time by detecting a sync of an audio / video signal of a playback side. If not, the present invention relates to an audio / video signal recording method of a VCR which automatically stops driving a double deck to complete a recording operation.

In general, the VCR has a plurality of operation modes, and has respective function selection keys for performing the functions. These function selection keys are attached to the VCR main body or remote controller (Remore Controller).

For example, the operation of each function by the function selection key of the VCR is shown as a arrow.

First, in order to record and play back the video tape inserted into the VCR, the user inserts the video tape and selects the recording mode selection key to perform the video tape recording operation, and selects the play mode key for playback. Play the video tape. At this time, if the videotape has already been played back while the videotape is being played back by the operation of the play mode key, that is, the user wants to watch the video data viewed by the user, the play mode is switched to the stop mode. This mode switching is performed by the user selecting the stop mode key during playback of the video data.

Hereinafter, a recording operation of a VCR having a double deck according to the related art will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram schematically illustrating an audio / video signal recording apparatus of a VCR having a double deck according to the related art. Referring to FIG. 1, the audio / video signal recorded on one recording medium is described. A first deck 12 for reproduction, a second deck 14 having a recording medium for recording audio / video signals reproduced in the first deck 12, and a first deck 12 inserted in the first deck 12 A reproduction signal for reproducing the audio / video signal recorded on the recording medium and a recording signal for recording the audio / video signal reproduced on the first deck 12 on the recording medium inserted into the second deck 14, respectively. The first deck 12 switches the first deck 12 to the playback mode according to the key input section 10 and the playback signal provided from the key input section 10 so that the audio / video signal recorded on the recording medium is played back. Drive the key input unit (1). A control unit which drives the second deck 14 so that the audio / video signal reproduced by the first deck 12 can be recorded by switching the second deck 14 to the recording mode according to the recording signal inputted at 0). 11) and an A / V (Audio / Video) processing unit 13 for signal processing so that the audio / video signal reproduced by the first deck 12 can be recorded on the recording medium of the second deck 14. do. Here, the first deck 12 may be a recording deck, the second deck 14 may be a playback deck.

Let us look at the audio / video signal recording operation of a VCR having a double deck according to the prior art having such a configuration.

First, while the power of the VCR is turned on, the user inserts an original magnetic recording medium (video tape) on which the audio / video signal to be recorded is recorded into the first deck 12, and the second deck 14 has the first deck. A magnetic recording medium for recording audio / video signals reproduced from the magnetic recording medium inserted into the deck 12 is inserted.

In the state where the recording medium and the recording medium for recording are inserted in the first and second decks 12 and 14, respectively, the user inputs the playback key and the recording key of the key input unit 10, respectively. That is, a reproduction signal for reproducing the audio / video signal recorded on the recording medium inserted into the first deck 12 is input to the controller 11, and the audio / video signal reproduced by the first deck 12 is generated. The recording signal is inputted to the control unit 11 so that it can be recorded on the recording medium inserted in the two decks 14.

The control unit 11 provides a reproduction signal to the first deck 12 and a recording signal to the second deck 14 in response to input of a reproduction signal and a recording signal of the key input unit 10 to the recording medium for reproduction. The first deck 12 is switched to the playback mode so that the recorded audio and video signals can be reproduced, and the second deck 14 is switched to the recording mode for playback on the recording medium of the first deck 12. It switches to recording mode so that audio and video signals can be recorded.

The first deck 12 switched to the playback mode under the control of the controller 11 reproduces the audio and video signals recorded on the recording medium. The reproduced audio and video signals are A / V signals. The processor 13 outputs the signal to be processed on the recording medium inserted into the second deck 14 in the processing unit 13.

The audio and video signals that are processed and output by the A / V signal processor 13 are sequentially recorded on the recording medium of the second deck 14.

As described above, although the recording is completed during the recording of the audio and video signals of the VCR having the double deck according to the prior art, the playback tape and the recording tape perform the playback and recording operations to the end.

For example, suppose that audio and video signals are recorded only in a certain area of the playback tape, and the user wants to record the audio and video signals recorded on the playback tape on another recording medium. All of the signals are played back, and even though the recording is completed, it is not easy to determine whether the recording is completed.

Therefore, when the playback tape and the recording tape are all played back to the end and the playback is completed to the end, the deck drive is automatically stopped by the tension of the tape, and unnecessary recording time is required, and the deck is driven by the tension. There is a problem that can damage the tape because it is stopped.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems according to the prior art, and an object of the present invention is to detect a sync of an audio and video signal to be reproduced on a recording medium and to reproduce the sync when the sync is not detected for a predetermined time. The audio / video signal of the VCR which judges that all the audio and video signals recorded on the recording medium are recorded and recorded on the recording medium, and automatically stops the drive of the playback deck and the recording deck to complete the recording operation. A video signal recording method is provided.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic block diagram of an audio / video signal recording apparatus of V-Cal with a double deck according to the prior art.

2 is a schematic block diagram of an audio / video signal recording apparatus of V-Cal equipped with a double deck according to the present invention.

3 is a flowchart illustrating an operation of an audio / video signal recording method of V-seal according to the present invention.

♣ Explanation of symbols for main part of drawing ♣

20: key input unit 21: control unit

22, 24: 1st, 2nd deck 23: A / V signal processing unit

25: sink detection unit

An audio / video signal recording method of a VCR according to the present invention for achieving the above object is an audio and video signal recording method of a VCR having an A / V playback deck and an A / V recording deck. When a playback signal is input to the A / V playback deck and a recording signal is input to the A / V recording deck, the audio and video signals recorded on the recording medium of the A / V playback deck are reproduced to generate the A signal. Recording on a recording medium of the / V recording deck; Detecting a synch of audio and video signals reproduced on a recording medium of the A / V playback deck during the recording; As a result of the sync detection, when the sync is not detected for a predetermined time, it is determined that both the audio and video signals recorded on the recording recording medium are reproduced and recorded on the recording recording medium. The step of stopping the drive of the V-recording deck is made.

Hereinafter, an audio / video signal recording method of a VCR according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic block diagram of an audio / video signal recording apparatus of a VCR having a double deck applied to the present invention, and description thereof is omitted for the same components as those of the prior art shown in FIG. 2, a sink detector 25 and a sink detector 25 which detect a sync of audio and video signals reproduced by the first deck 22 and output a detection signal to the controller 21. As a result of the sink detection in the above), when the sink is not detected for a predetermined time or more, a driving stop control signal is provided to the first and second decks 22 and 24 to stop the first deck 22 and the second deck 24, respectively. The control unit 21 is additionally configured.

Looking at the operation of the recording device having such a configuration, when the power of the VCR is turned on, the user inserts the original magnetic recording medium (video tape) on which the audio / video signal to be recorded is recorded into the first deck 22. In the second deck 24, a magnetic recording medium for recording audio / video signals reproduced from the magnetic recording medium inserted into the first deck 22 is inserted.

In the state where the recording medium for recording and the recording medium are respectively inserted into the first and second decks 22 and 24, the user inputs the playback key and the recording key of the key input unit 20, respectively. That is, a reproduction signal for reproducing the audio / video signal recorded on the recording medium inserted into the first deck 22 is input to the control unit 21, and the audio / video signal reproduced by the first deck 22 is generated. The recording signal is inputted to the control unit 21 so that the recording medium can be recorded on the recording medium inserted in the two decks 24.

The control unit 21 provides a reproduction signal to the first deck 22 and a recording signal to the second deck 24 in response to the reproduction signal and the recording signal of the key input unit 20, respectively. The first deck 22 is switched to the playback mode so that the recorded audio and video signals can be reproduced, and the second deck 24 is switched to the recording mode for playback on the recording medium of the first deck 22. It switches to recording mode so that audio and video signals can be recorded.

The first deck 22 switched to the playback mode under the control of the controller 21 reproduces the audio and video signals recorded on the recording medium, and the reproduced audio and video signals are A / V signals. The processor 23 outputs the signal to be processed on the recording medium inserted into the second deck 24 in the processing unit 23.

The audio and video signals that are processed and output by the A / V signal processor 23 are sequentially recorded on the recording medium of the second deck 24.

At this time, the sync detection unit 25 detects the sync of the audio and video signals reproduced by the first deck 22 during recording, and the sync detection signal is applied to the control unit 21 to determine whether the sync is detected. do.

As a result of determination, when a sync is detected, it is determined that audio and video signals are continuously being reproduced by the first deck 22, and the audio and video signals reproduced are continuously recorded on the recording video tape of the second deck 24. On the contrary, if the sink is not continuously detected for a predetermined time, all audio and video signals recorded on the playback video tape of the first deck 22 are reproduced and recorded on the recording video tape of the second deck. The controller 21 determines that the recording has been performed, and provides the deck driving stop signal to the first and second decks 22 and 24. Accordingly, the first and second decks 22 and 24 are in the stop mode in the playback mode and the second deck 24 in the recording mode and in the stop mode according to the driving stop signal provided from the control unit 21. The recording operation is completed by switching to.

The audio / video signal recording method of the VCR according to the present invention corresponding to the above operation will be described step by step with reference to FIG. 3.

First, while the VCR is powered on, the user inserts the original video tape for reproduction in which the audio / video signal to be recorded is recorded in the first deck 22 for A / V reproduction, and the second A / V recording second. The deck 24 inserts a magnetic recording medium for recording audio / video signals reproduced from the magnetic recording medium inserted into the first deck 22 (S101).

Subsequently, a playback signal is inputted to the first deck 22 for A / V playback while the playback recording medium and the recording recording medium are inserted in the first and second decks 22 and 24, respectively, and A / V recording. It is determined whether or not a recording signal is input to the second deck 24 (S102).

As a result of the determination, when the reproduction signal and the recording signal are input to the first deck 22 and the second deck 24, respectively, when the first deck 22 is in the playback mode and the second deck 24 is switched to the recording mode, the first deck is input. The audio and video signals recorded on the recording medium inserted into the deck 22 are reproduced (S103).

Subsequently, the sync of the audio and video signals thus reproduced is detected (S104), and it is determined whether the sync is detected (S105).

As a result of the determination, when the sync is detected, the first deck 22 judges that the audio and video signals are continuously being reproduced and records the reproduced audio and video signals on the recording video tape of the second deck 24. On the contrary, if the sink is not continuously detected for a predetermined time (S107), both audio and video signals recorded on the playback video tape of the first deck 22 are reproduced to record the second deck. It is determined that the recording is recorded on the video tape, and the driving of the first and second decks 22 and 24 is stopped to complete the recording operation (S108). That is, the first deck 22 is in the stop mode and the second in the playback mode. The deck 24 switches from the recording mode to the stop mode to complete the recording operation.

Consequently, the present invention is inserted into the first deck 22 for A / V playback during audio and video signal recording of a VCR having an A / V playback deck 22 and an A / V recording deck 24. When the sync of audio and video signals reproduced on the video tape for playback is detected and the sync is not detected for a predetermined time, the audio and video signals recorded on the video tape for playback are all played back to the second deck for A / V recording. It is judged that the recording has been recorded on the recording video tape inserted in (24), and the driving of the reproduction deck and the recording deck is automatically stopped to complete the recording operation.

As described above, an audio / video signal recording method of a VCR according to the present invention is inserted into an A / V playback deck during recording of an audio and video signal of a VCR having an A / V playback deck and an A / V recording deck. When the sync of audio and video signals reproduced by the reproduced video tape is detected and the sync is not detected for a predetermined time, all audio and video signals recorded on the reproduced video tape are reproduced to the A / V recording deck. By judging that the recording is inserted in the inserted recording video tape and automatically stopping the drive of the playback deck and the recording deck, there is an advantage of reducing unnecessary recording operation time, and the user can easily determine whether or not recording is completed. It has an effect.

Claims (1)

In the audio and video signal recording method of a VCR having an A / V playback deck and an A / V recording deck, When a playback signal is input to the A / V playback deck and a recording signal is input to the A / V recording deck, the audio and video signals recorded on the recording medium of the A / V playback deck are reproduced and the Recording on the recording medium of the A / V recording deck; Detecting a synch of audio and video signals reproduced on a recording medium of the A / V playback deck during the recording; As a result of the sync detection, if a sync is detected, audio and video signals continuously reproduced are recorded on the recording medium. If the sync is not detected for a predetermined time, the audio and video signals recorded on the recording medium are recorded. And stopping driving of the A / V playback deck and the A / V recording deck by determining that all of them have been reproduced and recorded on the recording medium.