KR970075829A

KR970075829A - Television receiver with video mixing function

Info

Publication number: KR970075829A
Application number: KR1019960016855A
Authority: KR
Inventors: 홍성준
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1996-05-18
Filing date: 1996-05-18
Publication date: 1997-12-10

Abstract

본 발명은 두 개의 채널의 영상을 믹스시켜 화면에 출력시킬 수 있도록 된 영상 믹싱기능을 갖춘 텔레비전 수상기에 관한 것으로, 공중파 방송신호중 한 채널의 영상신호중에서 동기신호를 분리하여 제거하는 동기신호 제거부, 상기 동기신호 제거부에서 출력되는 신호를 입력받아 색조신호의 위상을 복원하여 색차신호를 출력하는 색조신호 복조부, 상기 색차신호를 합성하여 R(Red), G(Green), B(Blue) 신호를 출력하는 매트릭스 회로부, 상기 제2영상신호 추출부가 출력하는 복합영상신호에서 흑백상을 나타나게 할 수 있는 휘도신호(Y)를 추출하는 휘도신호 추출부, 및 상기 휘도신호 추출부가 출력하는 휘도신호(Y)와 매트릭스 회로부가 출력하는 R, G, B 신호 및 상기 영상 처리부가 출력하는 Y, R, G, B 신호를 믹싱하는 믹싱부를 포함하여 구성되고, 제어부는 시청자로부터 영상 믹싱기능이 설정되면 상기 동기신호 제거부와 휘도신호 추출부 및 믹싱부를 구동하여 제1 및 제2영상신호 추출부에서 추출되는 영상을 믹싱하여 CRT로 출력하도록 하는 것을 특징으로 한다.The present invention relates to a television receiver having an image mixing function capable of mixing images of two channels and outputting them to a screen, and more particularly, to a television receiver that includes a synchronous signal removing unit for separating and removing a synchronous signal from a video signal of one channel, A color signal demodulator for receiving a signal output from the synchronizing signal remover and restoring a phase of a color signal to output a color difference signal; A luminance signal extracting unit for extracting a luminance signal Y that can display a monochrome image in a composite video signal output from the second video signal extracting unit, and a luminance signal extracting unit for extracting a luminance signal Y, R, G, and B signals output from the matrix circuit unit and Y, R, G, and B signals output from the image processing unit, and the control unit When the image mixing function is set from the viewer, the synchronizing signal removing unit, the luminance signal extracting unit, and the mixing unit are driven to mix the images extracted by the first and second image signal extracting units and output to the CRT.

Description

Television receiver with video mixing function

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제1도는 일반적인 TV 수상기의 요부구성을 나타낸 블록 구성도, 제2도는 본 발명의 1실시예에 따른 영상 믹싱기능을 갖춘 TV 수상기의 내부구성을 나타낸 기는 블럭도.FIG. 2 is a block diagram showing an internal configuration of a television receiver having a video mixing function according to an embodiment of the present invention; FIG. 2 is a block diagram showing a main configuration of a general TV receiver;

Claims

A first and a second video signal extracting unit for selecting a channel from a terrestrial broadcast signal received through an antenna and extracting a composite video signal, a control unit for controlling operations of the entire apparatus by operation of the viewer, And a video processor for outputting R (Red), G (Green), and B (Blue) signals by performing image processing on the composite video signal extracted by the first video signal extracting unit, A sync signal demodulating unit for receiving a signal output from the sync signal removing unit and restoring a phase of the color signal to output a color difference signal; A matrix circuit for synthesizing color difference signals output from the color tone signal demodulation unit and outputting R (Red), G (Green) and B (Blue) A luminance signal extracting unit for extracting a luminance signal Y capable of displaying a monochrome image in a composite video signal, and a luminance signal extracting unit for extracting a luminance signal Y output from the luminance signal extracting unit and an R, G, B signal And a mixing unit for mixing the Y, R, G, and B signals output from the image processing unit. When the image mixing function is set by the viewer, the controller controls the synchronizing signal removing unit, the luminance signal extracting unit, and the mixing unit And mixes the images extracted by the first and second image signal extracting units and outputs the mixed images to the CRT.

※ Note: It is disclosed by the contents of the first application.