KR970050071A

KR970050071A - Clamp pulse stabilization circuit

Info

Publication number: KR970050071A
Application number: KR1019950061401A
Authority: KR
Inventors: 이문걸
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-12-28
Filing date: 1995-12-28
Publication date: 1997-07-29

Abstract

본 발명에 따른 클램프 펄스 안정화회로(30)는 클램프 펄스 발생기(10)의 출력단에 연결되어 클램프 펄스의 폭을 조절할 수 있는 전압분배수단; 클램프 펄스 발생기(10)의 출력을 파형 정형하는 적분회로; 및 적분회로의 출력을 반전시켜 상기 비디오 프리앰프의 클램프입력단에 출력하는 반전회로로 구성되어 클램프 펄스 발생장치의 출력을 안정화시킨 후(즉, 노이즈를 제거한 후) 비디오 프리앰프에 인가함으로써 안정된 클램프 펄스에 의해 RGB 영상신호의 DC 레벨을 안정시켜 화질을 개선할 수 있는 효과가 있다.Clamp pulse stabilization circuit 30 according to the present invention is connected to the output terminal of the clamp pulse generator 10 voltage distribution means for adjusting the width of the clamp pulse; An integrating circuit for shaping the output of the clamp pulse generator 10; And an inverting circuit that inverts the output of the integrating circuit and outputs it to the clamp input terminal of the video preamplifier, which stabilizes the output of the clamp pulse generator (i.e., removes noise) and then applies a stable clamp pulse to the video preamplifier. This stabilizes the DC level of the RGB video signal, thereby improving the image quality.

Description

Clamp pulse stabilization circuit

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제4도는 본 발명에 따라 클램프 펄스를 비디오 프리앰프에 인가하는 것을 도시한 도면, 제5도는 본 발명에 따라 클램프 펄스의 펄스폭을 조정하는 것을 도시한 도면.4 illustrates the application of clamp pulses to a video preamp in accordance with the present invention, and FIG. 5 illustrates adjusting the pulse width of the clamp pulses in accordance with the present invention.

Claims

A monitor system for stabilizing a clamp pulse generated by a clamp pulse generator and supplying it to a video preamp, comprising: voltage distribution means connected to an output terminal of the clamp pulse generator to adjust a width of a clamp pulse; An integrating circuit for shaping the output of the clamp pulse generator; And an inverting circuit for inverting the output of the integrating circuit and outputting the inverting circuit to the clamp input terminal of the video preamplifier.

The clamp pulse stabilization circuit according to claim 1, wherein the voltage distribution means is implemented with a resistor (R1) and a variable resistor (VR) connected in series between Vcc and ground.

The clamp pulse stabilization circuit according to claim 1, wherein the integrating circuit is implemented by a capacitor (C1) and a resistor (RD) connected to an output terminal of the clamp pulse generator (10).

2. The clamp pulse stabilization circuit according to claim 1, wherein the inverting circuit is implemented as a transistor circuit (Q1) having a base connected to an integrating circuit and an emitter grounded (CE).

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