KR0138286B1 - Video cassette tape recorder with auto repeat reproducing apparatus for audio signal - Google Patents

Abstract

Disclosed is a video tape recorder which displays an image during a pause operation and repeatedly outputs a corresponding audio signal or a caption signal.

The video tape recorder according to the present invention stores a voice signal corresponding to a video signal and repeatedly outputs the stored voice signal during the pause operation period, and selects and outputs a demodulated voice signal during the non-pause operation period. And a switch for selecting and outputting a voice signal output from the voice memory section during the pause operation period.

The video tape recorder according to the present invention obtains a voice memory unit for storing an audio signal or a caption memory for storing caption data, and repeatedly outputs an audio signal or a subtitle during a pause operation to recognize a paused image and a voice. It has the effect of making it possible.

Description

Video tape recorder outputs audio signal or caption signal repeatedly during pause

1 is a block diagram showing an embodiment of a video tape recorder according to the present invention.

2 is a block diagram showing the detailed configuration of the voice memory shown in FIG.

3 is a waveform diagram showing angular waveforms of the apparatus shown in FIG.

4 is a block diagram showing another embodiment of a video tape recorder according to the present invention.

5 is a diagram showing the configuration of a caption signal.

6 is a block diagram showing another embodiment of a video tape recorder according to the present invention.

The present invention relates to a video tape recorder, and more particularly, to a video tape recorder which displays an image at a pause and repeatedly outputs a corresponding audio signal or a caption signal.

The pause function of the video tape recorder is a function to stop the progress of the tape in the scene of interest during the playback of the video tape to show the still image.

In the pause operation, the tape stops and the audio signal recorded on the linear track cannot be reproduced normally. Therefore, the conventional video tape recorder interrupts the output of the audio signal.

In the case where the video tape recorder is used for language learning, it is preferable that a sound signal is provided along with the still operation. However, the conventional video tape recorder has a problem in that it is inconvenient to use for language learning because the audio signal is not output during the pause operation.

An object of the present invention is to provide a video tape recorder which repeatedly generates an audio signal corresponding to a video signal during a pause operation period.

Another object of the present invention is to provide a video tape recorder which outputs a caption signal corresponding to a production signal superimposed on a video signal during a pause operation.

According to an aspect of the present invention, a video tape recorder includes: a voice memory unit for storing a voice signal corresponding to an associative signal and repeatedly outputting a stored voice signal during a pause operation period; And

And a switch for selecting and outputting the demodulated voice signal during the non-pause operation period, and selecting and outputting the voice signal output from the voice memory during the pause operation period.

The video tape recorder according to the present invention for achieving the above another object is

A caption decoder for decoding a caption signal included in a reproduced video signal;

A caption memory connected to the caption decoder and storing decoded caption data corresponding to a video signal;

A recording / reproducing control section which writes decoded caption data into the caption memory and repeatedly reads out the frame period during the pause operation period;

A character generator for generating a caption signal corresponding to caption data read from the caption memory; And

And a mixer unit for synthesizing the caption signal generated by the character generator with a video signal and outputting the synthesized video signal.

As is well known, in a video tape, an image signal is recorded on an inclined video track and an audio signal is recorded on a linear track. In the pause operation, an image signal is reproduced by scanning a video track of a tape on which the image head is stopped. On the other hand, the audio head cannot reproduce the audio signal because the tape is stopped.

In the present invention, in order to output the audio signal corresponding to the video signal, the audio signal reproduced immediately before the pause operation is performed is stored, and the audio signal stored in the pause operation period is repeatedly output. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing the configuration of the audio repeating output device according to the present invention. In the apparatus shown in FIG. 1, reference numeral 10 is a voice memory section, and 12 is a switch.

The audio memory unit 10 stores the audio signal corresponding to the video signal and repeatedly outputs the stored audio signal during the pause operation period.

The switch 12 selects and outputs the demodulated response signal during the non-pause operation period, and selects and outputs the audio signal output from the voice memory unit 10 or during the pause operation period.

FIG. 2 is a block diagram showing the detailed configuration of the voice memory section shown in FIG. In the apparatus shown in FIG. 2, 20 is a sound section detector 20, an analog / digital converter (hereinafter referred to as an A / D converter) 22, a voice memory 24, a recording / playback control unit 26, and a digital / analog. The transducer 28 and the question 29 are provided.

The sound section section 20 detects the first sound section of the demodulated speech signal after the pause command is applied.

The A / D converter 22 is connected to the sound section section 20, and samples the demodulated speech signal during the sound section and outputs digitally encoded speech data.

The voice memory 24 stores digitally encoded voice data through the A / D converter 22.

The recording / playback control section 26 interlocks with the A / D converter 22 to generate a writing address of the voice memory 24, and generates a read address for repeatedly reading the stored voice data after the writing is completed. .

In addition, the recording / playback control section 26 includes a first latch 26a for storing the leading write address in which the audio data is recorded, and a second latch 26b for storing the finish write address, and the first latch 26a and the first latch. The address stored in the second latch 26b is referred to when a read address occurs.

The D / A converter 28 converts the audio data read out from the audio memory 24 into an analog audio signal and outputs it.

The question gate 29 delays the pause operation of the video signal until the end of the sound section, so that the timing of the video signal and the audio signal can be set appropriately.

3 is a timing diagram for showing the operation of the apparatus shown in FIG. FIG. 3A is a diagram showing a pause signal PAUSE designating a pause operation. FIG. 3B is a diagram showing a demodulated audio signal flowing into the A / D converter 22 of FIG. 2, and FIG. FIG. 3 is a diagram showing a sound section signal output from the sound section section 20 of FIG. 3, FIG. 3D is a diagram showing a digitally converted speech signal output from the A / D converter 22 of FIG. 2, and FIG. 3E is a view of FIG. FIG. 3 shows a voice signal output from the A / D converter 28, and FIG. 3F shows a delayed pause signal PAUSE 'output from the question 29 of FIG.

The operation of the apparatus shown in FIG. 2 will be described in detail with reference to the timing diagram shown in FIG. When a pause command is input through the command input unit 16 including the pause key 16a, the controller 14 recognizes this and sets the pause signal to a high level. When the pause signal is set to the high level, the sound-period discrimination section 20 determines the first sound-period section of the reproduced voice signal as shown in Fig. 3B and outputs the sound-period discrimination signal shown in Fig. 3C.

The A / D converter 22 digitally converts and outputs an audio signal applied thereto during the period during which the sound section determination signal output from the sound section section 20 is high level. That is, the digital conversion operation is performed from the point A to the point B of FIG. 3C.

The recording / playback control section 26 also operates in the sound section like the A / D converter 22 to generate the write address of the audio memory 24. FIG. Here, the start write address and the end write address are latched in the first latch 26a and the second latch 26b, respectively.

Accordingly, the digital voice data as shown in FIG. 3D is stored in the voice memory 24.

When the response section ends, that is, when the response section determination signal generated by the sound section determination unit 20 falls from the high level to the low level, the recording / playback control section 26 performs the first latch 26a and the second latch 26b. The repetitive read address is generated by referring to the start write address and the end write address which are latched in the.

In other words, sequential and repetitive read addresses are generated from the first write address latched in the first latch 26a to the end write address latched in the second latch 26b. Since the video signal is still, the synchronization relationship with the audio signal may not be considered.

On the other hand, the delayed pause signal PAUSE 'is output from the AND gate 29. The delayed pause signal is a signal in which the pause signal PAUSE shown in FIG. 3A is delayed by the sound section shown in FIG. 3C. . The pause operation is performed by this delayed pause signal.

The reason for delaying the pause operation of the video signal is to provide an opportunity to store an audio signal corresponding to the video signal as described above.

In the embodiment shown in FIG. 2, it is assumed that the pause operation of the video signal is performed at the same time as the application of the pause signal. Otherwise, it is not necessary to provide an AND gate. For example, if a slight delay occurs after the pause signal is actually applied until the pause is actually performed, the object of the present invention can be sufficiently achieved by storing the voice signal during the delay period and providing the pause signal. will be.

The voice data repeatedly read out from the voice memory 24 is converted into an analog voice signal as shown in FIG. 3F through the D / A converter 28 and provided to a voice output device such as a speaker. Accordingly, the user may view the video signal and repeatedly listen to the corresponding audio signal.

4 is a block diagram showing another embodiment of the present invention. The apparatus shown in FIG. 4 includes a caption decoder 40, a caption memory 42, a recording / playback control section 44, a character generator 46, and a mixer section 48. As shown in FIG.

The caption decoder 40 decodes the caption signal included in the reproduced video signal.

When the caption memory 42 is connected to the caption decoder 40, the caption memory 42 stores one frame of decoded caption data.

The recording / playback control section 44 writes the decoded caption data into the caption memory, and controls to read out repeatedly at the frame period during the pause operation. The recording / playback control section 44 controls the caption data for one screen to be recorded. Here, the caption data for one screen refers to the caption data until the subtitle erasing signal is generated.

The character generator 46 generates a caption signal corresponding to the caption data read out from the caption memory 42.

The mixer unit 48 combines the caption signal generated by the character generator 46 with the video signal and outputs the synthesized video signal.

5 is a diagram showing the configuration of a caption signal inserted in the blanking period of the video signal. The caption data is encoded by the conversation contents of the program and inserted into the horizontal scan line in the blanking period and transmitted. Caption data includes control data and actual data for display control. This control data includes data for erasing the currently displayed subtitle. As long as this erasing data does not occur, the subtitles are displayed in the same contents.

The operation of the apparatus shown in FIG. 4 will be described in detail. When a pause command is applied through the command input unit 50 including the pause key 50a, the controller 52 recognizes this and sets the pause signal PAUSE to a high level. By the pause signal set to the high level, the caption decoder 40 is disabled to no longer perform the decoding operation, and the caption data stored in the caption memory 42 is repeatedly read in the frame period so that the character generator 46 Is provided. Here, instead of disabling the caption decoder 40 by the pause signal, a switch may be provided to block the video signal from flowing into the caption decoder.

The caption signal generated by the character generator 46 is combined with the video signal through the mixer 48 and output.

Accordingly, the user can watch the caption superimposed on the video signal representing the conversation content.

FIG. 6 is a block diagram showing another embodiment of the present invention, in which the apparatus shown in FIG. 1 and FIG. Since the operation of the apparatus shown in FIG. 6 is the same as the operation of the apparatus shown in FIGS. 1 and 5, detailed description thereof will be omitted.

As described above, the video tape recorder according to the present invention uses a voice memory unit for storing a voice signal or a caption memory for storing caption data and repeatedly outputs a voice signal or a subtitle during a pause operation to generate a voice along with an image. It has the effect of making it recognizable.

The audio memory disclosed in FIG. 2 may store audio signals corresponding to a plurality of video signals. The plurality of voice signals stored in the voice memory may be stored. The plurality of voice signals stored in the voice memory may be selectively read out by the recording / playback control unit. This can facilitate voice editing, catalog creation, and the like.

Accordingly, what is disclosed in the embodiments of the invention is not intended to limit the scope of the invention, the spirit of the invention should be judged by the appended claims and their equivalents.

Claims (5)

A voice memory means for storing an audio signal corresponding to the video signal and repeatedly outputting the stored audio signal during the pause operation period, and selecting and outputting a demodulated audio signal during the non-pause operation period, and outputting the audio signal during the pause operation period. A video tape recorder comprising a switch for selecting and outputting an audio signal output from the memory means, wherein the audio memory means comprises: A sounding section detector for detecting a first sounding section of the demodulated speech signal after a pause command is applied; An analog / digital converter connected to the sound section, for outputting a digitally encoded sound data by sampling a demodulated sound signal during the sound section; A voice memory for storing the digitally encoded voice data; A recording / playback control unit which interlocks with the analog / digital converter to generate a write address of the voice memory, and generates a read address for repeatedly reading stored voice data after writing is completed; And a digital / analog converter configured to convert the read voice data into an analog voice signal and output the analog voice signal. The method of claim 1, And the recording and reproducing control unit stores the first writing address and the ending writing address in which the voice data is recorded, and refers to this when the reading address occurs. 2. The audio signal repeating output device according to claim 1, further comprising delay means for delaying the pause operation of the video signal until the end of the sound section. Voice memory means for storing the audio signal corresponding to the video signal and repeatedly outputting the stored audio signal during the pause operation period, and selecting and outputting the demodulated audio signal during the non-pause operation period, during the pause operation period or the A video tape recorder comprising a switch for selecting and outputting audio signals output from audio memory means, A caption decoder for decoding a caption signal included in a reproduced video signal; A caption memory connected to the caption decoder and storing one frame of decoded caption data corresponding to a video signal; A recording / playback control unit for writing the decoded caption data into the caption memory at a frame period and repeatedly reading the frame at the frame period during a pause operation; A character generator for generating a caption signal corresponding to caption data read from the caption memory; And a mixer for synthesizing the caption signal generated by the character generator with a video signal and outputting the synthesized video signal. A video tape recorder which repeatedly outputs a caption signal corresponding to a video signal during a pause operation. A caption decoder for decoding a caption signal included in a reproduced video signal; A caption memory connected to the caption decoder and storing decoded caption data corresponding to a video signal; A recording / playback control section for writing decoded caption data into the caption memory and repeatedly reading out the frame caption data at a frame period during a pause operation period; A character generator for generating a caption signal corresponding to caption data read from the caption memory; And a mixer configured to synthesize a caption signal generated by the character generator with a video signal and output the synthesized video signal.