KR970022917A

KR970022917A - Horizontal malfunction prevention circuit by micom in video display device

Info

Publication number: KR970022917A
Application number: KR1019950038903A
Authority: KR
Inventors: 오권일
Original assignee: 배순훈; 대우전자 주식회사
Priority date: 1995-10-31
Filing date: 1995-10-31
Publication date: 1997-05-30

Abstract

본 발명에 따라 귀선 커패시터와 S보정 커패시터의 파라메터를 설정하는 회로는, 수직 및 수평동기신호를 입력받아 모드를 판별한 후 귀선 커패시터의 파라메터를 설정하기 위한 제1입출력 명령과 S보정 커패시터의 파라메터를 설정하기 위한 제2입출력 명령을 출력하는 마이콤(31); 상기 마이콤(31)의 제1입출력 명령을 지연시켜 안정화시키는 제1안정화부(32-1); 상기 제1안정화부(30-1)의 출력을 반전시키는 제1인버터(35-1); 상기 제1인버터(35-1)의 출력에 따라 보조 커패시터(ReC2)를 귀선 커패시터(ReC1)에 연결 혹은 차단시켜 귀선 커패시터의 파라메터를 설정하도록 된 제1스위칭부(36-1); 상기 마이콤(31)의 제2입출력 명령을 지연시켜 안정화시키는 제2안정화부(32-2); 상기 제2안정화부(32-2)의 출력을 반전시키는 제2인버터(35-2); 및 상기 제2인버터(35-2)의 출력에 따라 보조 커패시터(Cs2)를 S보정 커패시터(Cs1)에 연결 혹은 차단시켜 S보정 커패시의 파라메터를 설정하도록 된 스위칭부(36-2)로 구성되어 수평회로의 파라메터를 안정되게 설정하도록 되어 있다.According to the present invention, the circuit for setting the parameters of the retrace capacitor and the S correction capacitor is configured to receive the vertical and horizontal synchronous signals, determine the mode, and then use the first input / output command and the parameters of the S correction capacitor to set the parameters of the retrace capacitor. A microcomputer 31 for outputting a second input / output command for setting; A first stabilizing unit (32-1) for delaying and stabilizing a first input / output command of the microcomputer (31); A first inverter (35-1) for inverting the output of the first stabilizing unit (30-1); A first switching unit 36-1 configured to set a parameter of the retrace capacitor by connecting or disconnecting the auxiliary capacitor ReC2 to the retrace capacitor ReC1 according to the output of the first inverter 35-1; A second stabilizing unit (32-2) for delaying and stabilizing a second input / output command of the microcomputer (31); A second inverter (35-2) for inverting the output of the second stabilizing unit (32-2); And a switching unit 36-2 configured to set the parameter of the S correction capacitor by connecting or disconnecting the auxiliary capacitor Cs2 to the S correction capacitor Cs1 according to the output of the second inverter 35-2. Thus, the horizontal circuit parameters can be set stably.

Description

Horizontal malfunction prevention circuit by micom in video display device

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

제2도는 본 발명에 따른 영상표시장치에 있어서 마이콤에 의한 수평 오동작 방지회로를 도시한 블럭도.2 is a block diagram showing a horizontal malfunction prevention circuit by a microcomputer in the image display device according to the present invention.

제3도는 제2도에 도시된 수평 오동작 방지회로의 실시예.3 is an embodiment of the horizontal malfunction prevention circuit shown in FIG.

Claims

A microcomputer 31 that receives the vertical and horizontal synchronization signals and determines a mode, and outputs a first input / output command for setting parameters of the capacitors; A first stabilizing unit (32-1) for delaying and stabilizing the first input / output command of the microcomputer; A first inverter (35-1) for inverting the output of the first stabilizer; And a first switching unit (36-1) configured to connect or disconnect an auxiliary capacitor to a retrace capacitor according to the output of the first inverter to set a parameter of the capacitor. Prevention circuit.

2. The first stabilizing unit (32-1) is composed of an integrating circuit (33-1) for delaying an input signal by a predetermined time and a zener diode (34-1) which is conducted above a predetermined reference voltage. A video display device comprising: a horizontal malfunction preventing circuit by a microcomputer.

A microcomputer 31 for receiving the vertical and horizontal synchronization signals and determining a mode, and outputting a second input / output command for setting parameters of the S correction capacitor; A second stabilizing unit (32-2) for delaying and stabilizing a second input / output command of the micom; A second inverter 35-2 for inverting the output of the second stabilizing unit; And a second switching unit 36-2 configured to connect or disconnect an auxiliary capacitor to an S correction capacitor according to the output of the second inverter to set a parameter of the S correction capacitor. Horizontal malfunction prevention circuit.

4. The second stabilization circuit (32-2) is composed of an integrating circuit (33-2) for delaying an input signal by a predetermined time and a zener diode (34-2) which is conducted above a predetermined reference voltage. A horizontal malfunction preventing circuit due to a microcomputer in a video display device.

※ Note; Disclosure based on original application.