KR19990013599U - External device reproduction apparatus in television receiver - Google Patents

Abstract

The present invention relates to a TV system having an AV input unit 4 which receives data generated from an external AV device and delivers it into a TV system. In particular, the present invention receives image data received through the AV input unit 4 and receives image data. A pattern recognizing unit (5) for recognizing whether a subtitle exists in the image processing unit, and a video processor (8) for receiving and outputting data output through the pattern recognizing unit (5) to process and output the image signal to display an image on a monitor And a vertical size adjusting unit 7 controlling to change a period of a horizontal synchronization signal of an image currently input by the video processor 8 according to an input control signal, and a current input by the pattern recognizing unit 5. And a microcomputer 6 which recognizes a pattern of an image and provides a control signal to the vertical size adjusting unit 7. The external device reproducing apparatus described above.

Description

External device reproduction apparatus in television receiver

The present invention relates to a device for reproducing and displaying an image generated from an AV device during full-speed transmission of an AV device on a television receiver. In particular, when playing a videotape, the vertical synchronization of the horizontal synchronization is adjusted so that the subtitle is not displayed. A device for reproducing an external device in a television receiver.

In general, the configuration of a television broadcast receiver that receives a broadcast program and provides it to a user is as shown in FIG.

1 is a simplified block diagram of a general television broadcast receiver, in which reference numeral 1 denotes an antenna and 2 denotes an RF amplification for amplifying a radio frequency (RF) signal received through the antenna 1. 3 denotes an intermediate frequency (hereinafter referred to as IF) by mixing the radio frequency signal output from the RF amplifier 2 and the oscillation frequency signal output from the local oscillation circuit 17 to be described later. The first mixer outputs a signal.

Further, reference numeral 4 denotes an IF amplifier section for amplifying the intermediate frequency signal output from the first mixer 3, and 5 denotes an image intermediate frequency signal PIF in the intermediate frequency signal output from the IF amplifier section 4. And a P / S separator for separating the voice intermediate frequency signal SIF, and 6 represents a voice detector for detecting a voice signal from the voice intermediate frequency signal SIF output from the P / S separator 5. 7 denotes an image detector for detecting an image signal from an image intermediate frequency signal PIF output from the P / S separator 5.

In addition, reference numeral 8 denotes a remote control device that allows a viewer to select a desired channel or to select each mode of the television, that is, a TV / AV mode, and 9 denotes an infrared signal from the remote control device 8. 10 shows a receiver for converting a conventional code signal, 10 denotes a channel memory in which predetermined channel data is stored, and 11 denotes a microprocessor which controls the entire system in accordance with an input signal from the remote controller device 8.

In addition, reference numeral 12 denotes a screen display for overlapping and outputting a character or a picture on a screen on which a broadcast signal is output separately from the broadcast signal according to the control signal of the microprocessor 11 (On Screen Display). (Hereinafter referred to as OSD), and 13 denotes a PWM generator which generates a predetermined pulse width modulation (PWM) signal according to a control signal from the microprocessor 11, and 14 denotes the above. An integration circuit for integrating the PWM signal output from the PWM generator 13 to generate a predetermined level signal is shown.

In this case, when the viewer selects a predetermined channel using the remote controller device 8, the microprocessor 11 reads out channel data corresponding to the channel selected by the viewer from the channel memory 10 and then based on the selected channel. By controlling the PWM generator 13 to generate a predetermined PWM signal, the PWM signal is output as a voltage control signal corresponding to the channel selected by the viewer through the integrator circuit 14.

In addition, reference numeral 15 is provided for a precise tuning operation, and represents an Auto Fine Tunning circuit (hereinafter referred to as AFT) circuit 15, and 16 represents a voltage signal applied from the integrating circuit 14; An adder for adding a voltage signal applied from the AFT circuit 15 is shown, and 17 represents a local oscillating circuit for outputting a predetermined oscillation frequency.

In addition, reference numeral 18 controls the amplification degree of the above-described RF amplifier 102 and the IF amplifier 4 on the basis of the level of the image signal detected by the image detector 7, the image detector ( Figure 7 shows the Automatic Gain Control (AGC) circuit that controls the video signal output level from 7).

On the other hand, reference numeral 19 denotes an external AV device such as a VCR or a laser disc player, and 20 denotes the voice detector 6 and the image detector 7 according to the switching signal from the microprocessor 11 described above. A first switching section for selectively outputting audio and video signals from and external audio and video signals from the external AV device 19 is shown.

Although reference numeral 23 is not shown for the image signal output from the first switching unit 20, the color, tint, and brightness are in accordance with the control signal from the microprocessor 11. A video processing unit which processes (Brightness) and the like and outputs R (Red), G (Green), and B (Blue) signals corresponding to the video signal.

The RGB signal output from the image processor 23 is output by mixing RGB and OSD blanking signals Y ′, which are output signals of the OSD generator 12 described above, in the second mixer indicated by reference numeral 24. Reference numeral 25 denotes a CRT driving unit for driving the CRT based on the RGB signal output from the mixer 24.

In addition, reference numeral 21 denotes a base, treble, and volume according to a control signal from the microprocessor 11 although not shown for the voice signal output from the first switching unit 20. A voice processing unit for executing voice processing such as a volume), and 22 denotes a voice amplifying unit for amplifying and outputting the voice signal processed by the voice processing unit 21 to a speaker.

In a general TV configured as described above, when the viewer selects the AV mode using the remote controller 8, the microprocessor 11 controls the switching unit 20 to control the voice detector 6 and By selectively outputting the video and audio signals from the video detector 7 or the video and audio signals from the external AV device 19 to the video processor 23 and the audio processor 21, the viewer Video and audio can be viewed through the TV's CRT and speakers.

At this time, if the AV device selected by the user is a VCR, the user is provided with the sound and image of the program stored on the videotape. Is displayed.

Therefore, even if the user wants to study the language while listening to the original sound for foreign language study, because the Korean subtitles are displayed, there is a problem that the learning efficiency is lowered.

Disclosure of the Invention An object of the present invention for solving the above problems is to provide an external device reproducing apparatus in a television receiver for reproducing video captions so that subtitles are not visible by adjusting the vertical synchronization of the video sync when requested. There is.

1 is a block diagram illustrating a general television receiver.

2 is an exemplary configuration diagram of an external device reproducing apparatus of a television receiver in a television receiver according to the present invention;

A feature of the present invention for achieving the above object, in the TV system having an AV input unit 4 for receiving data generated from an external AV device and delivering it to the TV system, the AV input unit 4 A pattern recognizing unit 5 for recognizing whether there is a subtitle in the image data by receiving the data outputted through the data, and receiving the data output through the pattern recognizing unit 5 to display the image on the monitor. A video processor 8 for processing and outputting, a vertical size adjusting unit 7 controlling to change a period of a horizontal synchronization signal of an image currently input by the video processor 8 according to an input control signal, and the pattern The microcomputer 6 recognizes a pattern of an image currently input by the recognition unit 5 and provides a control signal to the vertical size adjusting unit 7. There is.

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

2 is an exemplary configuration diagram of an external device reproducing apparatus of a television receiver according to the present invention, and includes a tuner 1 for receiving a broadcast signal of a channel selected by an input tuning voltage from an antenna, and a tuner 1 to the tuner 1. The video detector 2 detects an intermediate frequency from the received broadcast signal and detects an intermediate frequency related to the video, and the CVBS converter 3 extracts a composite video signal from the video intermediate frequency detected by the video detector 2. ), An AV input unit 4 which receives data generated from an external AV device and delivers the same to a TV system, and data output from the CVBS conversion unit 3 or data output through the AV input unit 4 A pattern recognition unit 5 that recognizes whether a caption exists in the image data and data output through the pattern recognition unit 5 to display an image on a monitor (CRT). A video processor 8 for processing and outputting the image signal, an amplifying unit 9 for receiving and amplifying and outputting a signal output from the video processor 8, and the video processor according to the input control signal. The vertical size adjusting unit 7 controls to change the period of the horizontal synchronization signal of the image currently input in 8), and the vertical size adjusting unit 7 recognizes the pattern of the image currently input by the pattern recognizing unit 5. It is composed of a microcomputer (6) for providing a control signal.

Looking at the operation of the external device playback apparatus in the television receiver according to the present invention configured as described above are as follows.

When the viewer selects the AV mode using the remote control device 8, the video data generated from the VCR or the like is transmitted to the pattern recognition unit 5 through the AV input unit 4. The pattern recognizing unit 5 recognizes whether there is text data related to the subtitles in the current input image, and transfers the text captions to the microcomputer 6 when the text captions are present. In addition, the pattern recognition unit 5 transmits the input image data to the video processor 8 without specific signal processing.

At this time, if it is determined that the character caption exists according to the pattern recognition information output from the pattern recognition unit 5, the microcomputer 6 controls the vertical size adjustment unit 7 to adjust the period of horizontal synchronization.

Accordingly, the vertical size adjusting unit 7 controls the video processor 8 to adjust the horizontal synchronization of the image currently input through the pattern recognizing unit 5 so that the subtitle region existing at the lower end of the screen image is adjusted. It is moved out of the display area of the monitor CRT to prevent the user from viewing the area.

By providing an external device reproducing apparatus in a television receiver according to the present invention that operates as described above, Korean subtitles are displayed even when a user wants to study a language by studying the original sound for studying a foreign language. This falling problem can be solved.

Claims (1)

In a TV system having an AV input unit (4) for receiving data from an external AV device and delivering the data to a TV system, A pattern recognition unit 5 which receives data output through the AV input unit 4 and recognizes whether a caption exists in the image data; A video processor (8) which receives data output through the pattern recognition unit (5) and processes and outputs the image signal to display an image on a monitor; A vertical size adjusting unit (7) for controlling a period of a horizontal synchronization signal of an image currently input by the video processor (8) according to an input control signal; And And a microcomputer (6) for recognizing a pattern of an image currently input by the pattern recognizing unit (5) to provide a control signal to the vertical size adjusting unit (7).