KR960028188A - Gamma correction circuit - Google Patents

Gamma correction circuit

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Publication number
KR960028188A
KR960028188A KR1019940051786A KR19940051786A KR960028188A KR 960028188 A KR960028188 A KR 960028188A KR 1019940051786 A KR1019940051786 A KR 1019940051786A KR 19940051786 A KR19940051786 A KR 19940051786A KR 960028188 A KR960028188 A KR 960028188A
Authority
KR
South Korea
Prior art keywords
transistor
collector
differential
differential amplifiers
terminal
Prior art date
Application number
KR1019940051786A
Other languages
Korean (ko)
Inventor
고로 우에다
히로시 시바
Original Assignee
가네코 히사시
닛폰 덴키 주식회사
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 가네코 히사시, 닛폰 덴키 주식회사 filed Critical 가네코 히사시
Priority to KR1019940051786A priority Critical patent/KR960028188A/en
Publication of KR960028188A publication Critical patent/KR960028188A/en

Links

Abstract

감마 보정회로는 비디오 신호가 공급되는 각각의 입력 단자 및 공통 접속된 각각의 출력단자를 갖고 있는 복수의 차동증폭기를 가지고 있다. 상기 차동증폭기 중 적어도 하나는 그 베이스가 입력단자에 연결되지 않고, 에미터가 각각의 저항에 연결되며, 컬렉터가 공통 접속인 트랜지스터를 포함하는 트랜지스터의 차동쌍으로 구성되어 있다. 복수의 독립적 활성화 및 비활성화 외부 기준전압은 그 베이스가 입력단자에 연결되지 않은 트랜지스터의 베이스에 접속된다.The gamma correction circuit has a plurality of differential amplifiers having respective input terminals to which video signals are supplied and respective output terminals connected in common. At least one of the differential amplifiers consists of a differential pair of transistors including a transistor whose base is not connected to the input terminal, the emitter is connected to each resistor, and the collector is a common connection. A plurality of independent activation and deactivation external reference voltages are connected to the base of a transistor whose base is not connected to the input terminal.

Description

감마 보정 회로Gamma correction circuit

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

제5도는 본 발명의 제1실시예에 따른 감마 보정회로의 회로도.5 is a circuit diagram of a gamma correction circuit according to a first embodiment of the present invention.

Claims (3)

비디오 신호가 공급되는 각각의 입력 단자 및 공통 접속된 각각의 출력단자를 갖는 복수의 차동증폭기를 포함하는 데, 상기 차동증폭기중 적어도 하나는 트랜지스터의 베이스가 입력단자에 접속되지 않고, 에미터가 각각의 저항에 접속되며, 컬렉터가 공통 접속된 에미터를 포함하는 트랜지스터의 차동쌍으로 구성되며; 베이스가 입력단자에 접속되지 않은 상기 트랜지스터의 베이스에 접속된 복수의 독립적 활성화 및 비활성화 외부 기준전압원을 포함한 것을 특징으로 하는 감마 보정회로.And a plurality of differential amplifiers having respective input terminals to which a video signal is supplied and respective output terminals connected in common, wherein at least one of the differential amplifiers has no base of a transistor connected to the input terminal, and an emitter of each Connected to a resistance of the collector, the collector consisting of a differential pair of transistors comprising a commonly connected emitter; A gamma correction circuit, characterized in that it comprises a plurality of independent activation and deactivation external reference voltage sources connected to the base of the transistor whose base is not connected to the input terminal. 제1항에 있어서, 상기 모든 차동증폭기중에서 차동쌍으로 구성된 트랜지스터는 그 베이스가 입력단자에 접속되고, 컬렉터가 공통 저항을 통해 전원공급 단자에 접속되는 트랜지스터를 포함하고, 상기 컬렉터와 상기 공통 저항 사이의 결합부에 접속되는 출력단자를 추가로 포함하며, 상기 모든 차동증폭기중 차동쌍으로 구성된 트랜지스터는 각각의 저항을 통해 접지, 단자를 가지고 있는 정전류원에 접속되는 각각의 에미터를 가지는 것을 특징으로 하는 감마 보정회로.The transistor of claim 1, wherein a transistor configured as a differential pair among all the differential amplifiers includes a transistor whose base is connected to an input terminal, and a collector is connected to a power supply terminal through a common resistor, and between the collector and the common resistor. And further comprising an output terminal connected to a coupling portion of the transistor, wherein a transistor composed of a differential pair of all the differential amplifiers has a respective emitter connected to a constant current source having a ground and a terminal through respective resistors. Gamma correction circuit. 제1항에 있어서, 상기 모든 차동증폭기중에서 차동쌍으로 구성된 트랜지스터는 그 베이스가 입력단자에 연결되지 않고, 컬렉터가 공통 저항을 통해 전원공급 단자에 접속되는 트랜지스터를 포함하고, 상기 컬렉터와 상기 공통 저항 사이의 결합부에 접속되는 출력단자를 추가로 포함하며, 상기 모든 차동증폭기중 차동쌍으로 구성된 트랜지스터는 각각의 저항을 통해 접지 단자를 가지고 있는 정전류원에 접속되는 각각의 에미터를 가지는 것을 특징으로 하는 감마 보정회로.The transistor of claim 1, wherein a transistor configured as a differential pair among all the differential amplifiers includes a transistor whose base is not connected to an input terminal, and a collector is connected to a power supply terminal through a common resistor, wherein the collector and the common resistor are used. And further comprising an output terminal connected to a coupling portion therebetween, wherein the transistors constituted by differential pairs of all the differential amplifiers have respective emitters connected to a constant current source having a ground terminal through respective resistors. Gamma correction circuit. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940051786A 1994-12-19 1994-12-19 Gamma correction circuit KR960028188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940051786A KR960028188A (en) 1994-12-19 1994-12-19 Gamma correction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940051786A KR960028188A (en) 1994-12-19 1994-12-19 Gamma correction circuit

Publications (1)

Publication Number Publication Date
KR960028188A true KR960028188A (en) 1996-07-22

Family

ID=66649132

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940051786A KR960028188A (en) 1994-12-19 1994-12-19 Gamma correction circuit

Country Status (1)

Country Link
KR (1) KR960028188A (en)

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