KR960015186A - Free running frequency control circuit of monitor - Google Patents

Free running frequency control circuit of monitor Download PDF

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Publication number
KR960015186A
KR960015186A KR1019940027904A KR19940027904A KR960015186A KR 960015186 A KR960015186 A KR 960015186A KR 1019940027904 A KR1019940027904 A KR 1019940027904A KR 19940027904 A KR19940027904 A KR 19940027904A KR 960015186 A KR960015186 A KR 960015186A
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KR
South Korea
Prior art keywords
running frequency
free running
resistor
voltage
switching
Prior art date
Application number
KR1019940027904A
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Korean (ko)
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KR0130157B1 (en
Inventor
김도헌
Original Assignee
배순훈
대우전자 주식회사
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Application filed by 배순훈, 대우전자 주식회사 filed Critical 배순훈
Priority to KR1019940027904A priority Critical patent/KR0130157B1/en
Publication of KR960015186A publication Critical patent/KR960015186A/en
Application granted granted Critical
Publication of KR0130157B1 publication Critical patent/KR0130157B1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/18—Generation of supply voltages, in combination with electron beam deflecting

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)

Abstract

본 발명은 모니터에 관한 것으로서, 특히 모드 절환시 입력되는 수평 동기 신호가 없는 동안 발생되는 프리 런닝(Free-Running)주파수를 변경함으로써, 고화질을 구현할 수 있는 모니터의 프리 런닝 주파수 제어 회로에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor, and more particularly, to a free running frequency control circuit of a monitor capable of realizing high image quality by changing a free-running frequency generated while there is no horizontal sync signal inputted during mode switching.

이와같은 본 발명은 입력되는 수직 동기 신호를 스위칭하는 스위칭 수단과, 상기 스위칭 수단에서 출력되는 전압을 적분시키는 정형 수단과, 상기 정형 수단에서 출력되는 전압과 출력 전압의 차를 증폭시켜 프리 런닝 주파수를 높히는 프리런닝 주파수 증폭 수단으로 구성된다.As described above, the present invention provides switching means for switching an input vertical synchronizing signal, shaping means for integrating the voltage output from the switching means, and amplifying a difference between the voltage output from the shaping means and the output voltage to increase the free running frequency. It consists of free running frequency amplification means.

Description

모니터의 프리 런닝 주파스 제어 회로Free running frequency control circuit of monitor

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

제2도는 본 발명에 따른 모니터의 수직 편향 회로의 구성을 보인 도면.2 is a view showing the configuration of the vertical deflection circuit of the monitor according to the present invention.

Claims (4)

모드 절환시 입력되는 펄스 형태의 수직 동기 신호가 수직 주파수에 따라 삼각 파형의 수직 편향 신호로 변환시켜 출력되는 모니터의 수직 편향 회로에 있어서, 입력되는 수직 동기 신호를 스위칭하는 스위칭 수단과, 상기 스위칭 수단에서 출력되는 전압을 적분시키는 정형 수단과, 상기 정형 수단에서 출력되는 전압과 출력전압의 차를 증폭시켜 프리 런닝 주파수를 높히는 프리 런닝 주파수 증폭 수단으로 구성됨을 특징으로 하는 모니터의 프리 런닝 주파수 제어 회로.A vertical deflection circuit of a monitor, in which a pulse-type vertical synchronization signal input at the time of mode switching is converted into a vertical deflection signal of a triangular waveform according to a vertical frequency and outputted, the switching means for switching an input vertical synchronization signal, and the switching means. A free running frequency control circuit comprising a shaping means for integrating the voltage output from the free running frequency and a free running frequency amplifying means for amplifying the difference between the voltage output from the shaping means and the output voltage to increase the free running frequency. . 제1항에 있어서, 스위칭 수단은 입력되는 전원(Vcc)를 분배시키는 저항(R11)(R12)와, 상기 저항(R11)(R12)의 분배된 전압에 의해 스위칭되어 입력되는 수직 동기 신호가 출력되는 트랜지스터(Q11)와, 상기 트랜지스터(Q11)의 전류를 제어하는 저항(R13)로 구성됨을 특징으로 하는 모니터의 프리 런닝 주파수 제어 회로.2. The switching means according to claim 1, wherein the switching means outputs a vertical synchronizing signal which is switched and input by a resistor (R11) R12 for distributing the input power Vcc and a divided voltage of the resistors R11 (R12). And a transistor (Q11) and a resistor (R13) for controlling the current of the transistor (Q11). 제2항에 있어서, 상기 정형 수단은 상기 스위칭 수단의 트랜지스터(Q11)의 출력 전압을 적분시키는 저항(R21) 및 콘덴서(C21)으로 구성됨을 특징으로 하는 모니터의 프리 런닝 주파수 제어 회로.3. The free running frequency control circuit of claim 2, wherein the shaping means comprises a resistor (R21) and a capacitor (C21) for integrating the output voltage of the transistor (Q11) of the switching means. 제3항에 있어서, 상기 프리 런닝 주파수 증폭 수단은 상기 정형 수단에서 출력되는 전압을 바이패스 시키는 저항(R31)과, 출력되는 프리 런닝 주파수를 분배시키는 저항(R32)(R33)과, 상기 저항(R32)(R33)에서 분배된 전압(V1)가 저항(R31)에서 출력되는 전압(Vs)의 차를 증폭시키는 증폭기(OP31)로 구성됨을 특징으로 하는 모니터의 프리런닝 주파수 제어 회로.The method of claim 3, wherein the free running frequency amplifying means comprises: a resistor (R31) for bypassing the voltage output from the shaping means, a resistor (R32) (R33) for distributing the free running frequency, and the resistor ( And an amplifier (OP31) for amplifying the difference between the voltage (Vs) output from the resistor (R31) and the voltage (V1) distributed at R32 (R33). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임※ Note: The disclosure is based on the initial application.
KR1019940027904A 1994-10-28 1994-10-28 Free running frequency control circuit of a monitor KR0130157B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940027904A KR0130157B1 (en) 1994-10-28 1994-10-28 Free running frequency control circuit of a monitor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940027904A KR0130157B1 (en) 1994-10-28 1994-10-28 Free running frequency control circuit of a monitor

Publications (2)

Publication Number Publication Date
KR960015186A true KR960015186A (en) 1996-05-22
KR0130157B1 KR0130157B1 (en) 1998-04-09

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Application Number Title Priority Date Filing Date
KR1019940027904A KR0130157B1 (en) 1994-10-28 1994-10-28 Free running frequency control circuit of a monitor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100391580B1 (en) * 1997-07-12 2003-10-22 삼성전자주식회사 Apparatus for generating vertical synchronous signal of complex signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100391580B1 (en) * 1997-07-12 2003-10-22 삼성전자주식회사 Apparatus for generating vertical synchronous signal of complex signal

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Publication number Publication date
KR0130157B1 (en) 1998-04-09

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