KR940001460B1 - Noise repeat playing system & method - Google Patents

Abstract

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Description

System and method for repetitive audio repetition

1 is a configuration of a video and audio playback system of conventional V-Cal.

2 is a block diagram of a closed caption audio repetition reproduction system of the present invention.

3 is an input / output control waveform diagram of a microcomputer.

4 is a block diagram of a caption signal for explaining the present invention.

5 is a signal flow diagram for the operation description of FIG.

* Explanation of symbols for main parts of the drawings

1: first signal selector 2: image recording processor

3: data slice part 4: micom

5: chroma image processing unit 6: audio recording processing unit

7: third signal selector 8: light receiver

The present invention relates to the repetition of subtitle audio repetition of V-Cal to detect the subtitle data in the 21st horizontal retrace period of the video signal during the subtitle broadcasting, and to repeatedly listen to the corresponding audio signal. The present invention relates to a closed caption audio repetition reproduction system and method for demodulating voice information corresponding to desired text information from a memory and repeatedly outputting a predetermined number of times.

In the conventional video and audio reproducing system, a signal reproducing unit scans a video tape of a deck and reproduces and outputs a video signal and a corresponding audio signal recorded on the tape, as shown in FIG. And a video signal processor 101 for signal-processing the video signal reproduced by the signal reproducing unit 100 and displaying the image on the screen through the video signal output unit 102, and from the signal reproducing unit 100. It is composed of a voice signal processing unit 103 for signal processing the output audio signal and outputs the sound through the voice signal output unit 104.

In the conventional video and audio reproduction system configured as described above, the signal reproduction unit 100 scans and reproduces the video signal recorded on the deck's video tape and the corresponding audio signal, and then outputs the signal. The video signal reproduced from the video signal is processed by the video signal processor 101 and then displayed on the screen by the video signal output unit 102. At the same time, the voice signal reproduced from the signal reproducing unit 100 is signal-processed through the voice signal processing unit 103 and then output through the voice signal output unit 104.

However, such a conventional video and audio reproducing system repeatedly performs a series of operations of rewinding a video tape to select and reproduce an arbitrary point of the tape. In other words, once the tape is read, the audio data is not saved. Therefore, if you want to listen to the audio signal recorded on the tape repeatedly, press the rewind, play, rewind key repeatedly, or use the repeater (repeat) function to transmit the audio and video. Accordingly, there is a problem that it takes a long time to repeat the loading of the tape, the mechanical noise of the rewind, inaccurate selection of the desired voice portion according to the rewind, and to watch again after transmitting the audio and video once.

Therefore, an object of the present invention is to detect the caption data carried in the 21st horizontal period of the TV video signal and to record the caption data and the corresponding audio data in the memory to watch through the color receiver and speaker according to the user's operation In addition, the present invention provides a system and method for repetitive voice recording and reproducing subtitle broadcasting by recording and reproducing text information and voice information of an artificially desired time during text subtitle broadcasting.

As described above, an object of the present invention is to provide a data slicing unit for detecting caption data in a composite video signal, an audio discriminating unit for discriminating an audio signal corresponding to the caption data, and a signal detected by the data slicing unit and the audio discriminating unit. According to the control of the microcomputer, a voice memory unit and a video memory unit storing subtitle data and audio data according to the control of the microcomputer upon inputting a repeat request signal, and data stored in the video memory unit and the audio memory unit. The present invention is described in detail with reference to the accompanying drawings, which is achieved by configuring a digital / analog converter for converting an analog signal and outputting video and audio.

2 is a block diagram of a closed caption audio repetition system of the present invention. As shown therein, a system for selectively diseased a composite video signal (VIF) of a TV and a composite video signal (CVI) of a V-Cal input from the outside is shown. A data slice unit 3 for detecting caption data from the composite video signal selected by the first signal selection unit 1 and generating a detection signal as a reference for the caption data; According to the detection signal output from the data slice unit 3 and the reception control signal input from the light receiving unit 8, the microcomputer 4 for controlling the entire operation of the system and the enable signal according to the control signal of the microcomputer 4 And a video recording processor 2 for signal processing and storing the subtitle data outputted from the data slice unit 3 and the video signal selected by the first signal selecting unit 1, and for processing the outputted data. A second signal selector 10 for selectively switching the video signal of the video recording processor 2, the first signal selector 1, the current video signal and the caption data of the data slice unit 3, and the second signal; A chroma image processing unit 5 for signal-processing and displaying a video signal selected from the signal selection unit 10 on a screen, and a TV corresponding to the composite video signal VIF of the TV and the composite video signal CVI of V-CAL. The third signal selector 7 for selectively switching between the voice signal SIF and the voice signal VSIF of the V-CAL, and the voice signal selected from the third signal selector 7 to the control signal of the microcomputer 4. According to the present invention, the audio recording processing unit 6 is configured to process and store the signal and to store the stored audio data through the audio output unit 9.

In this case, the image recording processing section 2 includes an analog / digital conversion section 2a for converting the caption data detected by the first signal selection section 1 video signal and the data slice section 3 into a digital signal, and the microcomputer. (4) an image memory section (2a) which is enabled in accordance with the control signal (E2) and stores the subtitle data and video signals converted from the analog / digital conversion section (2a) and outputs the stored data; The digital / analog converter is enabled according to the control signal E2 of 3) and converts the video data and the caption data output from the video memory section 2a into analog signals and outputs them to the second signal selector 10. (2c), wherein the voice recording processing section 6 is switched in accordance with the control signal C1 of the microcomputer 3 to switch off and pass the audio signal selected by the third signal selecting section 7. 6a) and through the switching unit 6a The voice discriminating unit 6b for discriminating the presence or absence of the sexual signal and inputting it to the microcomputer 4 and the control signal S1 of the microcomputer 4 are enabled to output the audio output signal of the audio discriminating unit 6b. The analog / digital converter 6c for converting the digital signal and the digital audio signal of the analog / digital converter 6c are converted into analog signals according to the control signal S1 of the microcomputer 3 to output the voice output unit ( 9) and a voice processing unit 6d for signal processing and outputting the signal, and the voice data processed by the voice processing unit 6d is stored, and the stored data is converted into an analog signal through the voice processing unit 6d. It consists of an audio memory section 6e outputted to the audio output section 9.

The operation and effects of the present invention configured as described above will be described in detail with reference to FIGS. 2 to 5.

First, when the composite video signal VIF of the TV and the composite video signal CVI of V-C are selected and input to the first signal selector 1, the data slice unit 3 receives the first signal selector ( 1) detects the caption data (CPD) contained in the 21st horizontal retrace period of the selected composite video signal and generates the detection signal which is the same or similar signal of the caption data, and the caption data (CPD) The output signal is output to the analog / digital conversion section 2a configured in the image recording processing section 2 and to the fixed terminal a of the second signal selection section 10, and the detection signal is output to the output terminal (a). It is applied to the input terminal D1 of the microcomputer 4 through FO. At this time, the microcomputer 4 checks whether the detection data is generated from the data slice unit 3 through its input terminal D1, and in the case of no input, continuously scans the data slice unit 3 and checks it. When the detection data is input as shown in (a) of FIG. 3, the microcomputer 3 outputs the control signal E1, which is a low signal as shown in (b) of FIG. 3, to output the analog / digital converter 2a. By disabling and outputting the control signal C3, which is a low signal as shown in (h) of FIG. 3, the movable terminal c of the second signal selector 10 is connected to the fixed terminal a. In addition, the control signal E2 (S1), which is a high signal such as (c) and (e) of FIG. 3, is output, so that the audio memory of the video memory unit 2b and the audio recording processor 6 of the video recording processor 2 is output. The part 6e is cleared.

Accordingly, the video signal selected by the first signal selection unit 1 and the caption data detected by the data slice unit 3 are signal-processed by the chroma image processing unit 5 through the second signal selection unit 10 to display captions on the screen. It is displayed with the signal. Meanwhile, the audio signal SIF and the video signal VSIF of the TV corresponding to the video signal VIF of the TV and the video signal CVI of the TV are selected through the third signal selector 7. It is input to the switching section 6a configured in the audio recording processing section 6.

At this time, the microcomputer 4 outputs the control signal C1, which is a low signal, as shown in FIG. 3 (f) to turn on the switching unit 6a to receive the audio signal selected from the third signal selection unit 7. The voice discriminator 6b is inputted to the voice discriminator 6b, and the voice discriminator 6b applies a high signal as shown in (d) of FIG. 3 when the voice signal input through the switch 6a is discriminated. . Therefore, the microcomputer 4 determines whether or not the voice signal according to the input of the detection data detected from the data slice unit 3 is determined by the voice discriminating unit 6b. The audio signal output from the sound discrimination section 6b is outputted by outputting the control signal S1, which is a high signal such as?), To enable the audio recording processing section 6c, the speech processing section 6d, and the voice memory section 6e. Is converted into a digital signal through the analog / digital conversion unit 6c, and the converted digital signal is signal-processed by the voice processing unit 6d and stored in the voice memory unit 6e. On the other hand, the voice processor 6d inputs a signal such as (g) of FIG. 3 to the microcomputer 4. In this state, the microcomputer 4 checks whether the repeat request control data is input from the light receiving unit 8, that is, the light receiving unit 8 receives the optical signal irradiated from the remote control unit, and the number of repetitions of the remote control unit is repeated. (N) is set. When no signal is input from the light receiving unit 8, the light receiving unit 8 is continuously scanned to check whether the repeat request control data is input. As shown in (i) of FIG. 3, the repeat request control data is inputted to the input terminal I. If input, the image processing routine is executed. That is, when the repetitive request control data is input from the light receiving unit 8, the microcomputer 4 outputs the control signals E1 and E2, which are high signals, as shown in FIG. The analog / digital conversion section 2a, the image memory section 2b, and the digital / analog conversion section 2c are enabled.

Accordingly, the video signal selected by the first signal selector 1 and the video signal and caption data of the data slice unit 3 are converted into digital signals through the analog / digital conversion unit 2a to be transferred to the video memory unit 2b. 1 frame is stored.

Thereafter, the microcomputer 4 checks whether one frame is stored in the image memory unit 2b and outputs the control signal E1, which is a low signal, as shown in (b) of FIG. 3 to output the analog / digital conversion unit 2a. ) Is disabled and the detection data detected previously and the current detection data detected by the current data slice unit 3 are equal, that is, the caption data previously detected from the data slice unit 30 and the current input data If the caption data is the same, the voice data is continuously stored in the voice memory unit 6e while performing the subsequent process of determining the presence or absence of the voice input, and if the previous detection data and the current detection data are not the same, that is, the previous subtitle data If the current subtitle data is not the same, the audio memory unit 6e and the image memory unit 2b are cleared if it is not checked by the light receiving unit 8 again. While the process of after repeated and thereby stop the voice storage operation of the speech memory unit (6e), if not equal to the two detected data from the repeat request control data is input and performs a voice repeat routine.

That is, when the two detection data are not the same and the repeat request control data is input, the microcomputer 4 outputs the control signal C3, which is a high signal, as shown in (h) of FIG. 3 to operate the second signal selector 10. The terminal (c) is connected to its fixed terminal (b), and as shown in (b) of FIG. 3, the control signal E1, which is a low signal, is output to disable the analog / digital converter 2a, and (c Outputs a control signal E2 that is a high signal to enable the image memory unit 2b and the digital / analog converter 2c to digitally store one frame of image data stored in the image memory unit 2b. The analog signal is converted into an analog signal through the analog converter 2c, and the converted video signal is displayed on the screen by the second signal selector 10 and the chroma image processor 5, and the voice of the audio recording processor 6 is also displayed. If the voice signal is terminated by checking the end state of the voice signal through the discriminating unit 6b, the microcomputer 4 Disables the analog / digital conversion section 6c and outputs a control signal C1 that is a high signal as shown in FIG. 3 (f) to turn off the switching section 6a and reset the counter.

In addition, as shown in FIG. 3E, the control signal S1, which is a high signal, is output to enable the voice processing section 6d and the voice memory section 6e.

As a result, the voice data stored in the voice memory unit 6e is converted into an analog voice signal through the voice processor 6d, and output through the voice output unit 9 by the number of repetitions. At this time, the voice processing unit 6d applies the control signal C2, which is a pulse signal, to the microcomputer 4 every time the audio output repetition frequency is repeatedly output as shown in FIG. 3 (g). If the control signal C2 input from the sound processor 6d is counted and the counted value is equal to the number of repetitions N set by the light receiver 8, and if it is not the same, the voice memory unit 6e is continuously controlled. The stored voice signal is output to the voice output unit 9, and if the count value and the repetition number N are the same, the movable terminal c of the second signal selection unit 10 is connected to its fixed terminal a. Then, the switching unit 6a is turned on, and the image memory unit 2b and the audio memory unit 6e are disabled to perform the initial operation.

As described in detail above, the present invention detects the caption data carried in the 21st horizontal period of the TV video signal, records the detected caption data and the corresponding audio data in the memory, and performs color correction according to the user's operation. And it can watch through the speaker, and during the text caption broadcasting, it can record the caption information and voice information artificially, and when the signal input that requires repetition at any time can be repeatedly listened to the corresponding voice a certain number of times, repeated learning is possible. In addition, it is possible to solve the noise and time required due to the rewinding, playing, and rewinding of the tape when the sound is repeated through V-Cal. It is effective in preventing vaporization.

Claims (7)

A data slice section 3 for detecting caption data from the composite video signal of TV and V-Cal selected by the first signal selecting section 1 and generating gum data as a reference for the caption data; and the data slice section 3 Microcomputer 4 for controlling the entire operation of the system in accordance with the detection data and the reception control signal input from the light-receiving unit 8, and is enabled in accordance with the control signal of the microcomputer 4 and output from the data slice unit (3) A video recording processing unit (2) for storing the subtitle data and the video signal selected by the first signal selecting unit (1) in units of frames, and processing and outputting the stored data; and the video signal and the video signal of the video recording processing unit (2). A second signal selector 10 for selectively switching the current video signal and subtitle data of the first signal selector 1 and the data slice unit 3 to the chroma image processor 5, and a third signal selector ( 7) Selected TV and Bro And a voice recording processing unit 6 for storing the voice signal of the seed according to the control signal of the microcomputer 4 and processing the stored voice data and outputting the stored voice data through the voice output unit 9. Subtitle audio repeat playback system. The video recording processing unit (2) according to claim 1, further comprising: an analog / digital conversion unit (2a) for converting the first signal selection unit (1) and the caption data of the data slice unit (3) into digital signals; An image memory unit 2a which stores the image signal which is enabled according to the control signal E2 of the microcomputer 4 and converted from the analog / digital conversion unit 2a, one frame, and the control of the microcomputer 3; And a digital / analog converter 2c which is enabled according to the signal E2 and converts the image data stored in the image memory unit 2a into an analog signal and outputs the analog signal to the second signal selector 10. Subtitle audio repeat playback system. The audio recording processing unit (6) according to claim 1, further comprising: a switching unit (6a) for blocking and passing the audio signal selected by the third signal selection unit (7) in accordance with the control signal (C1) of the microcomputer (3); The voice discriminating unit 6b for discriminating the presence or absence of the voice signal through the switching unit 6a and being input to the microcomputer 4 and the control unit S1 of the microcomputer 4 is enabled. The analog / digital converter 6c for converting the voice signal of 6b into a digital signal and the digital signal of the analog / digital converter 6c are converted into analog signals according to the control signal S1 of the microcomputer 3. And a voice processing unit 6d for outputting to the audio output unit 9 and outputting a pulse according to the voice repetition to the microcomputer 4, and storing the voice data processed from the voice processing unit 6d. Is composed of a voice memory unit 6e for outputting to the voice output unit 9 through a voice processor 6d. Subtitles voice repeat playback system of closed captioning. Extract the caption data and the detection data according to the caption data from the external video signal, and store the audio signal in the voice memory unit according to the presence or absence of the audio signal corresponding to the video signal and the received repeat request control data, and output the audio signal. In the first step of outputting the negative data, and when the repetition request control data is input in the first step, the image data is stored in the image memory unit, and the previous detection data is compared with the current detection data. And a third process of continuously storing the voice signal in the voice memory unit, reading the stored voice data, and repeatedly outputting the set number of repetitions according to the determination of the second process. How to play subtitle audio repeat of a subtitle broadcast. 5. The method of claim 4, wherein the first process comprises: a first step of setting a repetition frequency, a second step of determining detection data for caption data after setting the repetition frequency, and a voice memory unit and an image when the detection data is input; A third step of clearing the memory unit, a fourth step of determining whether or not the voice signal is input after the third step, a fifth step of enabling the voice memory unit to store and output the voice signal when the voice signal is input; And a sixth step of determining whether or not the repeat request control data is input after storing the voice signal. 5. The method of claim 4, wherein the second process comprises: a seventh step of enabling an image analog / digital conversion unit and an image memory unit when inputting repetition request control data; and an eighth step of starting storing image data in the image memory unit; And a ninth step of determining whether the stored image data is one frame, a tenth step of blocking an input image signal by disabling the video analog / digital converter when the one frame is stored, and the previous detection data after storing the one frame. Subtitle broadcasting of subtitle broadcasting, characterized in that the first step is to compare the current detection data with the first detection process and continue to perform the voice storage operation if it is the same, and if the difference is different, stopping the storage operation according to the repeated request control data. How to play the voice repeatedly. 5. The method of claim 4, wherein in the third process, the detection data is different in the second process, and when the repetitive request control data is input, the twelfth step of reading data from the image memory unit and outputting one frame to the second signal selector; A thirteenth step of determining whether the input of the voice data corresponding to one frame of data is finished; a fourteenth step of blocking the voice switching unit if the input of the voice data is terminated; and a reset of the count after the voice interruption; A fifteenth step of repeating the voice signal by repeatedly reading the voice memory unit after the count reset; and a seventeenth step of comparing the repeated number of times and the set count value with each other; 18th step of transmitting the subtitle, and if the comparison value is the same, the 19th step of disabling the video, audio memory unit, characterized in that the closed caption voice repeated playback system.