KR950010507A

KR950010507A - Horizontal frequency automatic regulation circuit

Info

Publication number: KR950010507A
Application number: KR1019930019261A
Authority: KR
Inventors: 여종현
Original assignee: 김광호; 삼성전자 주식회사
Priority date: 1993-09-22
Filing date: 1993-09-22
Publication date: 1995-04-28

Abstract

이 발명은 수평 주파수 자동조절회로에 관한 것으러서, 롬과 디지탈/아닐로그 변환기를 제거하고, 컴퓨터내에서 출력하는 수평동기신호와 모니터에서 발진하는 수평발진신호의 주기를 동기시키기 위하여 입력되는 신호에 따라 입력되어 있는 프로그램에 준하여 스위칭 작용을 하는 마이크로 컴퓨터와, 상기 마이프로 컴퓨터에 의해 선택된 포트의 저항값에 따라 인가된 전압을 증폭하는 증폭부와, 상기 증폭부에서 증폭된 전압을 충전 및 방전하여 수평발진회로에 의히여 수평동기신호와 동기된 수평발진신호를 발진하기 위한 전압을 인가하는 발진용 컨덴서를 구비하였다. 따라서, 회로가 간단해지고, 비용이 절감되는 효과가 있다. 이 발명은 모든 디스플레이 장치에 사용 가능하다.The present invention relates to a horizontal frequency automatic control circuit, which removes a ROM and a digital / analog converter, and inputs a signal for synchronizing a period of a horizontal synchronization signal output from a computer and a horizontal oscillation signal generated from a monitor. Charging and discharging the amplified voltage amplified by the microcomputer for switching according to a program inputted according to the program, an amplifier for amplifying a voltage applied according to a resistance value of a port selected by the mipro computer. Thus, an oscillation capacitor is provided which applies a voltage for oscillating the horizontal oscillation signal synchronized with the horizontal synchronizing signal by the horizontal oscillation circuit. Therefore, there is an effect that the circuit is simplified and the cost is reduced. This invention can be used for all display devices.

Description

Horizontal frequency automatic regulation circuit

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

제2도는 이 발명에 따른 수평 주파수 자동조절회로를 나타내는 블럭도,2 is a block diagram showing a horizontal frequency automatic adjustment circuit according to the present invention;

제3도는 제2도의 상세 회로도,3 is a detailed circuit diagram of FIG.

제4도는 수평 동기 펄스와 증폭부의 출력 전압간의 관계를 나타내는 도표이다.4 is a diagram showing the relationship between the horizontal sync pulse and the output voltage of the amplifier.

Claims

A synchronous processor for converting input horizontal and vertical synchronous signals into horizontal and vertical synchronous signals and horizontal and vertical polarity signals; A microcomputer that switches to each port in a pre-programmed order according to a signal applied from the synchronous processor; An amplifier for amplifying a voltage corresponding to a port selected by a switching action of the microcomputer to a predetermined value; The oscillation capacitor is configured to charge and discharge the voltage amplified by the amplification unit to apply the amplified voltage to the horizontal oscillation circuit at a later stage so as to automatically adjust the horizontal frequency input and the horizontal oscillation frequency output from the horizontal oscillation circuit. Horizontal frequency automatic regulation circuit.

The method of claim 1, wherein the microcomputer is composed of at least one or more speech, and according to a state that is pre-programmed according to the input signal to operate at least one of each switch to select the corresponding port, characterized in that Horizontal frequency automatic regulation circuit.

The apparatus of claim 1, wherein the amplifier comprises: at least one resistor group connected to respective ports of the microcomputer and having different resistance values from each other; And a constant voltage source for supplying a constant voltage to the amplifier, and an amplifier connected to the resistor group and the constant voltage source to amplify the voltage applied from the microcomputer.

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