KR930022855A

KR930022855A - Superimposed Display Method of Video Signal

Info

Publication number: KR930022855A
Application number: KR1019920006729A
Authority: KR
Inventors: 안진우
Original assignee: 강진구; 삼선전자 주식회사
Filing date: 1992-04-22
Publication date: 1993-11-24

Abstract

디지탈 영상신호를 중첩 디스플레이 하기위해 제안된 방법은 상기 디지탈 영상신호를 제1,2메모리에 프레임 단위로 저장하는 과정과, 상기 제1,2메모리에 각기 저장된 상기 디지탈 영상신호를 리드하여 프레임 단위로 비교하는 과정과, 상기 비교과정에서 현재프레임과 이전프레임의 변화가 있을 경우에 그 변화된 영상신호를 상기 제2메모리에 다시 프레임 단위로 저장하는 과정과, 상기 제2메모리에 저장된 영상신호를 리드후 상기 제1메모리에 저장된 영상신호와 중첩시켜 화면상에 디스플레이 하는 출력과정으로 이루어져 있다.The proposed method for superimposing a digital video signal includes storing the digital video signal in the first and second memories on a frame basis, and reading the digital video signals stored in the first and second memories on a frame basis. Comparing and storing the changed video signal in the second memory frame by frame in the case where there is a change in the current frame and the previous frame in the comparing process, and reading the video signal stored in the second memory. And an output process of displaying on the screen by overlapping the video signal stored in the first memory.

Description

Superimposed Display Method of Video Signal

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 종래의 중첩 디스플레이 수행을 위한 처리 수순도, 제2도는 본 발명에 적용되는 중첩 디스플레이 회로의 블럭도, 제3도는 제2도에 따른 동작 타이밍도, 제4도는 본 발명의 일실시예를 설명하기위해 적용된 제2도의 각부의 출력특성도.1 is a process flowchart for performing a conventional superimposed display, FIG. 2 is a block diagram of a superimposed display circuit applied to the present invention, FIG. 3 is an operation timing diagram according to FIG. 2, and FIG. 4 is an embodiment of the present invention. Output characteristic diagram of each part of FIG.

Claims

A method of superimposing a digital video signal, the method comprising: storing the digital video signal in frames of the first and second memories, and reading and storing the digital video signals stored in the first and second memories, respectively, in a frame unit. And storing the changed video signal in the second memory in the unit of frame if there is a change in the current frame and the previous frame in the comparing process, and reading the video signal stored in the second memory after the readout. 1. A superimposed display method comprising an output process of superimposing an image signal stored in a memory and displaying the same on a screen.

The superimposed display method of claim 1, further comprising adjusting a video signal to be displayed by time by coding a video signal change value between frames converted in the comparison process.

The superimposed display method according to claim 1, wherein the digital video signal is output from a video camera or an electrical video signal.

The superimposed display method of claim 1, wherein the storing process is stored in units of frames in accordance with a clock extracted from a burst clock generator.

※ Note: The disclosure is based on the initial application.