KR980006812A - Variable gain adjustment circuit - Google Patents

Variable gain adjustment circuit Download PDF

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Publication number
KR980006812A
KR980006812A KR1019960019666A KR19960019666A KR980006812A KR 980006812 A KR980006812 A KR 980006812A KR 1019960019666 A KR1019960019666 A KR 1019960019666A KR 19960019666 A KR19960019666 A KR 19960019666A KR 980006812 A KR980006812 A KR 980006812A
Authority
KR
South Korea
Prior art keywords
saturation
gain adjustment
stage
amplifier
variable gain
Prior art date
Application number
KR1019960019666A
Other languages
Korean (ko)
Inventor
허서원
Original Assignee
구자홍
엘지전자 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 구자홍, 엘지전자 주식회사 filed Critical 구자홍
Priority to KR1019960019666A priority Critical patent/KR980006812A/en
Publication of KR980006812A publication Critical patent/KR980006812A/en

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Abstract

본 발명은 다단으로 구성된 자동이득 조정(AGC) 회로에서 각 단의 포화를 검출하는 가변 이득 조정 회로에 관한 것으로서, 특히 다단으로 직렬 연결된 다수개의 증폭기가, 상기 각 증폭기의 출력과 미리 설정된 임계값을 비교하여 각 증폭기의 포화를 검출하는 다수개의 포화 검출부와, 상기 포화 검출부의 출력에 따라 앞단의 증폭기부터 순차적으로 이득을 조정하는 AGC 제어부로 구성되어, 지연 양을 결정할 필요가 없으면서 초단의 증폭율을 최대로 유지할 수 있고, 또한, 각 단의 포화 왜곡도 최대한 줄일 수 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable gain adjustment circuit for detecting saturation of each stage in a multi-stage automatic gain adjustment (AGC) circuit. Comparing a plurality of saturation detection unit for detecting the saturation of each amplifier and an AGC control unit for adjusting the gain sequentially from the amplifier in front of the output according to the output of the saturation detection unit, the amplification rate of the first stage without the need to determine the amount of delay It is possible to maintain the maximum and to reduce the saturation distortion of each stage as much as possible.

Description

가변 이득조정 회로Variable gain adjustment circuit

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

제3도는 본 발명에 따른 가변 이득조정 회로의 단순 블럭도.3 is a simple block diagram of a variable gain adjustment circuit according to the present invention.

제4도는 상기 제3도의 포화 검출부의 상세 블럭도.4 is a detailed block diagram of the saturation detector of FIG. 3;

Claims (1)

다단으로 직렬 연결된 다수개의 증폭기와, 상기 각 증폭기의 출력과 미리 설정된 임계값을 비교하여 각 증폭기의 포화를 검출하는 다수개의 포화 검출부와, 상기 포화 검출부의 출력에 따라 앞단의 증폭기부터 순차적으로 이득을 조정하는 자동이득조정(AGC) 제어부를 포함하여 구성됨을 특징으로 하는 가변 이득조정 회로.A plurality of amplifiers connected in series in multiple stages, a plurality of saturation detectors for detecting the saturation of each amplifier by comparing the output of each amplifier with a preset threshold value, and gains sequentially from the preceding amplifier according to the output of the saturation detector; A variable gain adjustment circuit comprising an automatic gain adjustment (AGC) control unit for adjusting. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019960019666A 1996-06-03 1996-06-03 Variable gain adjustment circuit KR980006812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019960019666A KR980006812A (en) 1996-06-03 1996-06-03 Variable gain adjustment circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960019666A KR980006812A (en) 1996-06-03 1996-06-03 Variable gain adjustment circuit

Publications (1)

Publication Number Publication Date
KR980006812A true KR980006812A (en) 1998-03-30

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ID=66284173

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019960019666A KR980006812A (en) 1996-06-03 1996-06-03 Variable gain adjustment circuit

Country Status (1)

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KR (1) KR980006812A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100740500B1 (en) * 2003-07-03 2007-07-19 후지필름 가부시키가이샤 Image forming device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100740500B1 (en) * 2003-07-03 2007-07-19 후지필름 가부시키가이샤 Image forming device

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