KR20000003825A - Apparatus for controlling a play speed of a video and a sound signals by using a clock timing control - Google Patents

Abstract

PURPOSE: An apparatus for controlling a play speed of a video and a sound signals is provided to easily control the play speed by using a clock timing control. CONSTITUTION: An A/V switching unit(30) switches a video signal and an audio signal received from a tuner(2). A memory(40) stores the video signal and the audio signal provided from the A/V switching unit(30). A clock controller(50) controls the play clock time so as to control the speed of play. A main IC(20) processes the video signal and the audio signal provided from A/V switching unit(30) or the clock controller(50) to provide to a CRT or a speaker. A microcomputer(60) is connected to the main IC(20), the memory(40) and the clock controller(50) to control the speed of the play using the clock timing. Thereby, it is possible to easily control the play speed.

Description

Device for controlling playback speed of video and sound by clock timing control.

The present invention relates to an apparatus for controlling the speed of video and sound by clock timing control. More particularly, the present invention relates to a clock for storing video and sound of a certain time in a memory and reproducing the stored video and sound by a user's operation during a television broadcast. The present invention relates to a speed control apparatus for an image and a sound by clock timing control, which makes it possible to control a reproduction speed of an image and a sound by adjusting timing.

In line with the recent era of internationalization, many TV programs are being broadcasted in various languages such as English and Japanese as well as Korean, and as movies are broadcast on TV, they are recorded and replayed or only necessary parts There is a lot of interest in playing again.

An example of the internal configuration of a general television receiver shown in FIG. 1 is shown as a block diagram.

As shown in FIG. 1, the TV receiver includes an antenna 1, a tuner 2, a data decoder 2 ′, a main ICIF amplifier 3, a P / S separation unit 4, and a voice detector ( 5) an image detector 6, an audio processor 10, an OSD generator 13, an image processor 14 and a mixer 15, a remote controller 7, a receiver 8, a microcomputer 9, The memory means includes an E ² PROM 9 ', an audio amplifier 11, a speaker 12, a CRT driver 16, and a CRT 17. As shown in FIG.

The broadcast signal of the airwave is received by the antenna 1, and the broadcast signal received by the tuner 2 controlled by the microcomputer 9 is tuned. The IF amplifier 3 amplifies an intermediate frequency (IF) signal output from the tuner 2, and the P / S separation unit 4 includes a surface acoustic wave filter to convert the intermediate frequency (IF) into an image intermediate frequency ( PIF) and voice intermediate frequency (SIF).

The voice detector 5 detects a voice signal from the voice intermediate frequency (SIF), and the voice processor 10 detects the detected voice signal based on the control signal of the microcomputer 9 (Base) and Treble. Voice processing such as volume, volume, etc. is performed, and the processed voice signal is amplified by the voice amplifier 11 and output to the speaker 12.

The image intermediate frequency PIF is detected by an image signal in the image detector 6, and the image processor 14 detects the color, tint, brightness, etc. according to the control signal of the microcomputer 9. Processing to output R (Red), G (Green), B (Blue) and luminance (Y) signals corresponding to the image signal, and the R, G, B and luminance (Y) signals are displayed on the OSD in the mixer 15. By mixing and outputting the R ', G', B 'and OSD blanking signals Y' generated from the generator 13, the CRT 17 is driven through the CRT driver 16, and the OSD generator 13 is The image is displayed along with the predetermined OSD pattern data from.

In addition, the remote control device 7 is a device for the viewer to control the output volume, channel switching, etc., or to remotely control the overall device, and transmits an infrared signal and receives it from the receiving unit 8 of the television to convert it into an electrical code signal. By converting and outputting to the microcomputer 9, the overall apparatus is controlled by the microcomputer 9 in accordance with the electrical code signal.

2 schematically shows only the components related to the processing of video and sound in the configuration of the television receiver of FIG. 1. The main IC 20, the microcomputer 9, and the memory 9 ′, which mainly process the broadcast signal received through the antenna 1, the tuner 2, and the tuner as video and sound signals, are illustrated. Description of each component is as above-mentioned.

If there is a part of a program that is to be watched or listened to in a program broadcast through the general television receiver shown in FIG. 1, conventionally, the program is stored by videotape when the program is broadcasted, and then played again by changing the speed of the videotape. I used to control the speed.

But. In the conventional video and sound control apparatus configured and performed as described above, there is a problem that a separate video tape must be provided and the recording must be performed one by one. If you want to watch again or broadcast in a foreign language, if you just pass by, you may be very upset. Alternatively, there is a problem that the number of video tapes is burdened in the case of continuous recording.

Accordingly, the present invention is a playback speed control apparatus for video and sound by the clock timing control that can reproduce the contents stored for a certain time when the user wants to watch again or when watching slowly or listening to the TV when watching slowly The purpose is to provide.

1 is a block diagram showing an example of a circuit configuration of a general television receiver;

FIG. 2 is a block diagram showing an example of a circuit configuration related to controlling the speed of video and sound in the television receiver of FIG. 1;

Figure 3 is a block diagram showing the configuration of an embodiment of a speed control device for video and sound by the clock timing control according to the present invention.

* Explanation of symbols on the main parts of the drawings

1: Anna 2: Tuner 2 ': Data Decoder

3: IF amplifier 4: P / S separation part 5: negative detector

6: video detector 7: remote controller 8: receiver

9: Micom 9 ': E ² PROM 10: Voice processing unit

11: audio amplifier 12: speaker 13: OSD generator

14: image processing unit 15: mixer 16: CRT drive unit

17: CRT 20: Main IC 30: A / V Switching IC

40: memory 50: clock controller 60: microcomputer

In order to achieve the above object, the apparatus for controlling video and sound playback speed by clock timing control according to an embodiment of the present invention stores the video and sound signals of a television received from a broadcasting station, and then plays back the video and sound signals. A device for controlling to change the speed of: A device for controlling to change the playback speed of video and sound when storing and reproducing a video and sound signal of a television received from a broadcasting station: A tuner (2) when broadcasting a television A / V switching means 30 for switching the image and sound signals received through; Memory means (40) for storing video and sound signals input from said A / V switching means (30); A clock controller (50) for controlling a reproduction clock time of the image and sound signals to change the reproduction speed of the image and sound signals stored in the memory means (50); A main IC (20) for processing video and sound signals input from the A / V switching means (30) or input through the clock controller (50) and outputting them to a CRT and a speaker; Normally, the image and sound signals received through the tuner 2 are output to the real time and the speaker by the reference clock in real time, and the same contents are stored in the memory 40 at regular intervals. When there is a change request for the reproduction speed, the tuner 2 and the main IC 20 are blocked, and the image and sound stored in the memory 40 are reproduced by the reproduction clock changed in the main IC 20. The main IC 20, the A / V switching IC 30, the memory 40, and the microcomputer 60 for controlling the clock controller 50 may be configured.

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

As shown in Figure 3 the speed control apparatus of the image and sound according to the present invention

It is largely comprised of the A / V switching IC 30, the memory 40, the clock controller 50, the main IC 20, and the microcomputer 60. As shown in FIG.

The A / V switching means 30 normally passes the image and sound signals received through the tuner 2 when the television is broadcasted to the main IC 20. At the same time, the same contents are stored in the memory 40. Therefore, the video and sound signals of the broadcasted contents are stored in the memory 40 while the television is broadcasted. The amount of data stored in the memory greatly depends on the capacity and speed of the memory. Accordingly, the period in which the memory is latched by the operation of the regeneration mode is determined according to the capacity of the memory. The larger the memory capacity, the longer the signal of video and sound stored in the memory. The clock controller 50 is for changing the reproduction speed when the image and sound signals stored in the memory means 50 are reproduced. By varying the clock for data reproduction, the speed at which the image and sound signals are reproduced is changed. In order to change the clock, the stage of the reproduction speed can be widened by arranging a combination of multiple frequency division circuits. The main IC 20 processes an image and sound signal input from the A / V switching IC 30 or an image and sound signal input through the clock controller 50 and outputs the image and sound signals to the STI and the speaker. The microcomputer 60 normally outputs the image and sound signals received through the tuner 2 to the CALTI and the speaker in real time by the reference clock, and stores the same contents in the memory 40 at regular intervals. The A / V switching IC 30 is controlled. If there is a change request for the playback speed of the image and sound from the user, if the change request for the playback speed is input mainly by the user's remote control, the tuner 2 is controlled by controlling the A / V switching IC 30. ) And the main IC 20, and outputs the video and sound signals stored in the memory 40 to the main IC 20. At this time, the playback speed of the video and sound signals is changed and reproduced by the changed playback clock.

Operation of one embodiment by the configuration as described above is as follows.

In general, the image and sound signals received through the tuner 2 are stored in the memory 40 and output to the speaker and the CRT in real time through the main IC 20 through the A / V switching IC 30. . If the user selects a scene to be played by changing the speed of the video and sound while watching a television, and selects the playback speed by remote control operation, the microcomputer 60 controls the A / V switching IC 30. Therefore, the image and sound signals received through the tuner 2 are blocked from being directly input to the main IC 20, and the image and sound signals stored in the memory 40 are output to the main IC 20. Of course, the microcomputer 60 controls the clock controller 50 to control the clock corresponding to the playback speed set by the user. Accordingly, the user can play and watch the image and sound at a desired playback speed.

According to the configuration and operation of the speed control apparatus of the image and sound by the clock timing control according to the embodiment of the present invention described above, since the playback speed of the image and sound signal can be changed to a desired speed, You can observe detailed information through fast playback, and it provides a very convenient viewing effect even when watching a professional broadcast in a foreign language.

While the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited thereto, and the present invention may be variously modified and changed without departing from the spirit or the field of the present invention. It will be readily apparent to those of ordinary skill in the art.

Claims (1)

A device for controlling to change the playback speed of video and sound when storing and playing back video and sound signals of a television received from a broadcasting station: A / V switching means 30 for switching the image and sound signals received through the tuner 2 when the television is broadcast; Memory means (40) for storing video and sound signals input from said A / V switching means (30); A clock controller (50) for controlling a reproduction clock time of the image and sound signals to change the reproduction speed of the image and sound signals stored in the memory means (50); A main IC (20) for processing video and sound signals input from the A / V switching means (30) or input through the clock controller (50) and outputting them to a CRT and a speaker; Normally, the image and sound signals received through the tuner 2 are output to the real time and the speaker by the reference clock in real time, and the same contents are stored in the memory 40 at regular intervals. When there is a change request for the reproduction speed, the tuner 2 and the main IC 20 are blocked, and the image and sound stored in the memory 40 are reproduced by the reproduction clock changed in the main IC 20. Speed of video and sound by clock timing control, comprising a microcomputer 60 for controlling the main IC 20, the A / V switching IC 30, the memory 40, and the clock controller 50 controller.