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KR940017706A - Supply voltage control circuit of multi-mode monitor - Google Patents

Supply voltage control circuit of multi-mode monitor Download PDF

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KR940017706A
KR940017706A KR1019920026567A KR920026567A KR940017706A KR 940017706 A KR940017706 A KR 940017706A KR 1019920026567 A KR1019920026567 A KR 1019920026567A KR 920026567 A KR920026567 A KR 920026567A KR 940017706 A KR940017706 A KR 940017706A
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duty
power supply
signal
power
detection signal
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KR960007921B1 (en
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전일진
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이헌조
주식회사 금성사
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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)
  • Dc-Dc Converters (AREA)

Abstract

본 발명은 멀티모드(Multi Sync Mode)모니터에서 다양한 수평주파수에 따라 모니터에 공급되는 전원(애노우드 공급 고압)을 각 모드에 맞게 가변시켜 안정화 전원으로 공급해주는 멀티모드 모니터의 전원전압 제어회로에 관한 것이다.The present invention relates to a power supply voltage control circuit of a multi-mode monitor that supplies a stabilized power supply by varying the power supplied to the monitor (anode supply high voltage) according to various horizontal frequencies in a multi-sync mode monitor. will be.

종래의 모니터 고압 인가회로는 수평주파수 변화에 대응할 수 없으므로 수평주파수가 높아졌을때 고압이 낮아지게 되어 화상의 왜곡이 발생되는 문제점이 있다.Since the conventional monitor high voltage application circuit cannot cope with the change in the horizontal frequency, when the horizontal frequency is increased, the high voltage is lowered, which causes distortion of the image.

본 발명은 멀티모드 모니터의 수평주파수 변화를 검출하고 이 검출결과에 따라 플라이백 트랜스에 인가되는 전원레벨을 다양하게 가변시켜 공급해 주므로서 플라이백 트랜스 2차측에서 모니터 애노우드에 공급되는 고압을 수평주파수 변화에 관계없이 안정화시켜 공급해줄 수 있고, 이에따른 균일한 수평편향의 확보와 화면왜곡 방지를 기할 수 있도록한 것으로, 멀티싱크 모니터에 적용한다.The present invention detects a change in the horizontal frequency of a multi-mode monitor and varies the power level applied to the flyback transformer according to the detection result, thereby supplying the high voltage supplied to the monitor anode from the secondary side of the flyback transformer. It can be stabilized and supplied regardless of changes, and it is possible to secure a uniform horizontal deflection and prevent distortion of the screen. It is applied to a multi-sync monitor.

Description

멀티모드 모니터의 전원전압 제어회로Supply voltage control circuit of multi-mode monitor

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

제2도는 본 발명의 멀티모드 모니터의 전원전압 제어회로의 블록구성도, 제3도는 본 발명의 멀티모드 모니터의 전원전압 제어회로의 실시예 블록구성도, 제4도는 본 발명의 멀티모드 모니터의 전원전압 제어회로의 실시예 회로도, 제5도는 각 모드에 따른 본 발명 회로의 동작관계를 나타낸 신호파형도.2 is a block diagram of a power supply voltage control circuit of a multimode monitor of the present invention, and FIG. 3 is a block diagram of an embodiment of a power supply voltage control circuit of a multimode monitor of the present invention, and FIG. 4 is a block diagram of a multimode monitor of the present invention. 5 is a signal waveform diagram showing an operation relationship of a circuit of the present invention according to each mode.

Claims (6)

수평구동펄스의 펄스폭에 대응하는 검출신호를 수평주파수 변화에 대응하는 듀티정보로 출력하는 듀티/타임 검출신호(4)과, 상기 듀티/타임 검출수단(4)의 출력신호를 플라이백 트랜스(FBT)의 2차측 전원검출신호(H/V Det)와 비교하여 변동된 수평주파수에 알맞게 전원듀티를 가변시키는 듀티제어수단(5)과, 상기 듀티/타임 검출수단(4)의 출력신호를 동작초기에 감지하여 듀티제어수단(5)의 초기스타트 동작을 제어하는 초기스타트수단(6)과, 상기 듀티제어수단(5)에서 듀티비가변되어 출력된 전원으로 플라이백 트랜스(FBT)의 공급전원(B+)레벨을 변환시켜 출력하는 전원변환수단(7)으로 구성된 멀티모드 모니터의 전원전압 제어회로.A duty / time detection signal 4 for outputting a detection signal corresponding to the pulse width of the horizontal driving pulse as duty information corresponding to the horizontal frequency change, and an output signal of the duty / time detection means 4 as a flyback transformer ( A duty control means (5) for varying the power duty to suit the horizontal horizontal frequency which is varied compared to the secondary power supply detection signal (H / V Det) of the FBT) and an output signal of the duty / time detection means (4) Supplying power of the flyback transformer (FBT) to the initial start means 6 for detecting the initial start and controlling the initial start operation of the duty control means 5 and the power output of the duty ratio being changed by the duty control means 5. A power supply voltage control circuit of a multi-mode monitor, comprising power conversion means (7) for converting and outputting (B +) levels. 제1항에 있어서, 상기 듀티/타임 검출신호(4)은, 수평구동펄스를 미분하는 미분기(4A)와, 미분신호에 안정화 정전류 전원을 공급해주기 위한 정전류원(4B)과, 상기 미분신호와 상기 정전류 전원을 합성하는 합성부(4C)와, 합성된 신호를 적분하는 적분기(4D)와, 적분된 신호의 최고 상한레벨을 제한하는 레벨제한부(4E)로 구성된 멀티모드 모니터의 전원전압 제어회로.The differential / time detection signal (4) according to claim 1, characterized in that the duty / time detection signal (4) comprises: a differentiator (4A) for differentiating a horizontal drive pulse, a constant current source (4B) for supplying a stable constant current power to the differential signal, Power supply voltage control of a multi-mode monitor comprising a synthesis section 4C for synthesizing the constant current power supply, an integrator 4D for integrating the synthesized signal, and a level limiting section 4E for limiting the highest upper limit level of the integrated signal. Circuit. 제1항에 있어서, 상기 듀티제어수단(5)은, 듀티/타임 검출신호와 전원검출신호(H/V Det)를 비교하는 비교부(5A)와, 비교결과로 출력된 신호를 증폭하는 증폭부(5B)와, 증폭된 신호를 후단에 출력해주는 출력부(5C)로 구성된 멀티모드 모니터의 전원전압 제어회로.The amplification unit as claimed in claim 1, wherein the duty control means (5) comprises: a comparison unit (5A) for comparing the duty / time detection signal and the power detection signal (H / V Det), and amplifying the signal output as a result of the comparison. A power supply voltage control circuit of a multi-mode monitor comprising a section (5B) and an output section (5C) for outputting an amplified signal to a rear stage. 제1항에 있어서, 상기 초기스타트수단(6)은, 듀티/타임 검출신호를 소정시간 지연시키는 지연부(6A)와, 상기 지연된 신호에 의하여 듀티제어수단(5)의 전원검출신호(H/V Det)입력을 통제하는 스위칭부(6B)로 구성된 멀티모드 모니터의 전원전압 제어회로.2. The power supply detection signal (H /) of the duty control means (5) according to claim 1, wherein the initial start means (6) comprises: a delay portion (6A) for delaying the duty / time detection signal by a predetermined time; V Det) The power supply voltage control circuit of the multi-mode monitor consisting of a switching unit 6B for controlling the input. 제1항에 있어서, 상기 전원변환수단(7)은, 입력된 전원듀티 제어신호에 대응하는 듀티비의 전원공급신호를 변환처리 출력하는 DC/DC변환부(7A)와, 변환된 전원공급신호를 직류로 평활하여 플라이백 트랜스(FBT) 공급전원(B+)으로출력하는 평활부(7B)로 구성된 멀티모드 모니터의 전원전압 제어회로.The power supply conversion unit (7) according to claim 1, wherein the power conversion unit (7) includes a DC / DC conversion unit (7A) for converting and outputting a power supply signal having a duty ratio corresponding to the input power duty control signal, and the converted power supply signal. Voltage control circuit of a multi-mode monitor consisting of a smoothing part (7B) which outputs a flyback transformer (FBT) to a power supply (B + ) by smoothing DC to DC. 제2항에 있어서, 상기 미분기(4A)는 입력신호의 미분을 위한 콘덴서(C2) 및 저항(R4)으로 구성되고, 상기정전류원(4B)은 일정한 전원공급을 위한 제너다이오드(ZD1) 및 다이오드(D2)와 상기 제너다이오드(ZD1) 및 다이오드(D2)로 설정된 전압에 의하여 정전류를 흘려주는 트랜지스터(Q2)로 구성되고, 상기 합성부(4C)는 상기 정전류 전원을 공급받아 미분신호에 의하여 스위칭되는 트랜지스터(Q3)로 구성되고, 상기 적분기(4D)는 트랜지스터(Q3)에 의하여 충/방전되는콘덴서(C3)로 구성되고, 상기 레벨제한부(4E)는 콘덴서(C3) 충전의 상한 레벨을 설정해주는 제너다이오드(ZD2)로 구성된 멀티모드 모니터의 전원전압 제어회로.3. The method of claim 2, wherein the differentiator 4A is composed of a capacitor C2 and a resistor R4 for differentiation of an input signal, and the constant current source 4B is a zener diode ZD1 and a diode for constant power supply. (D2) and a transistor (Q2) for flowing a constant current according to the voltage set by the zener diode (ZD1) and diode (D2), and the synthesis section (4C) is supplied by the constant current power is switched by the differential signal The integrator 4D is composed of a capacitor C3 charged / discharged by the transistor Q3, and the level limiter 4E sets the upper limit level of charging of the capacitor C3. Power supply voltage control circuit of multi-mode monitor composed of Zener diode (ZD2). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019920026567A 1992-12-30 1992-12-30 Supply voltage control circuit of multi-mode monitor Expired - Fee Related KR960007921B1 (en)

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KR1019920026567A KR960007921B1 (en) 1992-12-30 1992-12-30 Supply voltage control circuit of multi-mode monitor

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KR1019920026567A KR960007921B1 (en) 1992-12-30 1992-12-30 Supply voltage control circuit of multi-mode monitor

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KR940017706A true KR940017706A (en) 1994-07-27
KR960007921B1 KR960007921B1 (en) 1996-06-15

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010035721A (en) * 1999-10-01 2001-05-07 박종섭 Power supply circuit for switching voltage
KR100385994B1 (en) * 2001-07-04 2003-06-02 삼성전자주식회사 Display apparatus having function of correcting deflection force and method for correcting deflection force thereof
KR100418902B1 (en) * 2001-09-06 2004-02-14 엘지전자 주식회사 Apparatus for controlling power
KR100464164B1 (en) * 1997-12-27 2005-04-06 현대 이미지퀘스트(주) Resonant Power Supply for Multi Sync Monitor
KR100587543B1 (en) * 1998-08-07 2006-06-08 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 A power supply for a deflection circuit operating at multi-scan frequencies
KR100865033B1 (en) * 2007-01-05 2008-10-23 주식회사 대우일렉트로닉스 Power frequency correction device and method for preventing screen shaking

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100464164B1 (en) * 1997-12-27 2005-04-06 현대 이미지퀘스트(주) Resonant Power Supply for Multi Sync Monitor
KR100587543B1 (en) * 1998-08-07 2006-06-08 톰슨 콘슈머 일렉트로닉스, 인코포레이티드 A power supply for a deflection circuit operating at multi-scan frequencies
KR20010035721A (en) * 1999-10-01 2001-05-07 박종섭 Power supply circuit for switching voltage
KR100385994B1 (en) * 2001-07-04 2003-06-02 삼성전자주식회사 Display apparatus having function of correcting deflection force and method for correcting deflection force thereof
KR100418902B1 (en) * 2001-09-06 2004-02-14 엘지전자 주식회사 Apparatus for controlling power
KR100865033B1 (en) * 2007-01-05 2008-10-23 주식회사 대우일렉트로닉스 Power frequency correction device and method for preventing screen shaking

Also Published As

Publication number Publication date
KR960007921B1 (en) 1996-06-15

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