KR930015659A - Frequency discrimination vertical center correction circuit - Google Patents

Frequency discrimination vertical center correction circuit Download PDF

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Publication number
KR930015659A
KR930015659A KR1019910023679A KR910023679A KR930015659A KR 930015659 A KR930015659 A KR 930015659A KR 1019910023679 A KR1019910023679 A KR 1019910023679A KR 910023679 A KR910023679 A KR 910023679A KR 930015659 A KR930015659 A KR 930015659A
Authority
KR
South Korea
Prior art keywords
vertical
vertical center
voltage
frequency
center correction
Prior art date
Application number
KR1019910023679A
Other languages
Korean (ko)
Other versions
KR940005261B1 (en
Inventor
최종룡
Original Assignee
이헌조
주식회사 금성사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이헌조, 주식회사 금성사 filed Critical 이헌조
Priority to KR1019910023679A priority Critical patent/KR940005261B1/en
Publication of KR930015659A publication Critical patent/KR930015659A/en
Application granted granted Critical
Publication of KR940005261B1 publication Critical patent/KR940005261B1/en

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Classifications

    • 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
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/227—Centering
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2231/00—Applications
    • H01H2231/004—CRT

Abstract

본 발명은 멀티모드 모니터에 주파수 판별 수직센터 보정회로에 관한 것으로, 종래에서는 수직센터 보정을 가변저항 한개로 보정하기 때문에 수직주파수가 다를 경우 칼라브라운관 화면의 수직센터 보정을 모두 만족시켜 줄 수가 없어서 주식주파수가 다른 모드에서 수직센터 위치가 다르게 된다.The present invention relates to a frequency discrimination vertical center correction circuit in a multi-mode monitor. In the related art, since vertical center correction is corrected with a single variable resistor, when the vertical frequency is different, the vertical center correction of the color CRT screen cannot be satisfied. In different modes, the vertical center position will be different.

본 발명은 이와같은 종래의 문제점을 해결하기 위하여 수직주파수를 전압으로 변환시킨 다음 그 출력전압으로 각각 설정되는 전압과 비교출력하여 그 출력된 신호에 의해 아날로그 스위치의 채널연결을 동작시키고, 가변저항(VR2-VR4)과 수직주파수(50Hz, 60Hz, 70Hz)를 각각 연결하여 저항(R3)과 같이 분배되어 조정된 전압레벨을 인가되게 하므로서, 수직주파수별로 수직센터를 보정할 수 있어 칼라브라운관 화면 품질을 높이는 잇점이 있게 된다.In order to solve the conventional problems, the present invention converts a vertical frequency into a voltage, and then outputs the voltage by comparing the voltage set to the output voltage and operating the channel connection of the analog switch by the output signal. VR2-VR4) and vertical frequency (50Hz, 60Hz, 70Hz) are connected to each other so that the adjusted voltage level is applied like resistor (R3), so that the vertical center can be corrected for each vertical frequency. Height has advantages.

Description

주파수 판별 수직센터 보정회로Frequency discrimination vertical center correction circuit

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

제3도는 본 발명의 주파수 판별 수직센터 보정 회로도, 제4도는 본 발명에 따른 수직주파수/전압의 특성 그래프, 제5도는 본 발명에 따른 아날로그 스위치 연결 특성표.3 is a frequency discrimination vertical center correction circuit diagram of the present invention, FIG. 4 is a characteristic graph of vertical frequency / voltage according to the present invention, and FIG. 5 is an analog switch connection table according to the present invention.

Claims (1)

수직출력부(1)의 수직편향 전류에 인가되는 직류전류(11), (12)를 수직주파수별로 조정하여 수직센터를 보정시키는 수직센터 보정부(2)와, 수직주파수를 전압으로 변환시켜 출력하는 주파수/전압 변환기(3)와, 상기 주파수/전압 변환기(3)에서출력된 전압을 각각 설정된 전압(Va), (Vb)과 비교하여 출력되게 하는 제1, 2비교부(4), (5)와, 상기 제1, 2비교부(4),(5)에서 비교된 출력전압(Ao), (A1)에 의해 수직주파수를 판별하여 각각 설정된 가변저항(VR2-VR4)을 동작시켜서 상기 수직센터 보정부(3)에 조정된 전압레벨이 인가되게 하는 아날로그 스위치부(6)로 구성함을 특징으로 하는 주파수 판별 수직센터 보정회로.Vertical center correction unit (2) for correcting the vertical center by adjusting the DC current (11), (12) applied to the vertical deflection current of the vertical output unit (1) for each vertical frequency, and converts the vertical frequency into voltage and outputs The first and second comparison units 4 and (4) for comparing the voltage / voltage converter 3 and the voltage output from the frequency / voltage converter 3 with the set voltages Va and Vb, respectively. 5), the vertical frequency is determined by the output voltages Ao and A1 compared in the first and second comparison units 4 and 5, and the variable resistors VR2-VR4 respectively set are operated. And an analog switch unit (6) for applying the adjusted voltage level to the vertical center corrector (3). ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019910023679A 1991-12-20 1991-12-20 Frequency vertical control compensating circuit KR940005261B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910023679A KR940005261B1 (en) 1991-12-20 1991-12-20 Frequency vertical control compensating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910023679A KR940005261B1 (en) 1991-12-20 1991-12-20 Frequency vertical control compensating circuit

Publications (2)

Publication Number Publication Date
KR930015659A true KR930015659A (en) 1993-07-24
KR940005261B1 KR940005261B1 (en) 1994-06-15

Family

ID=19325373

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910023679A KR940005261B1 (en) 1991-12-20 1991-12-20 Frequency vertical control compensating circuit

Country Status (1)

Country Link
KR (1) KR940005261B1 (en)

Also Published As

Publication number Publication date
KR940005261B1 (en) 1994-06-15

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