JPS58161319U - AGC amplifier circuit - Google Patents

AGC amplifier circuit

Info

Publication number
JPS58161319U
JPS58161319U JP5842082U JP5842082U JPS58161319U JP S58161319 U JPS58161319 U JP S58161319U JP 5842082 U JP5842082 U JP 5842082U JP 5842082 U JP5842082 U JP 5842082U JP S58161319 U JPS58161319 U JP S58161319U
Authority
JP
Japan
Prior art keywords
amplifier circuit
agc amplifier
output
circuit
peak level
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP5842082U
Other languages
Japanese (ja)
Inventor
「かげ」山　賢一
Original Assignee
株式会社東芝
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 株式会社東芝 filed Critical 株式会社東芝
Priority to JP5842082U priority Critical patent/JPS58161319U/en
Publication of JPS58161319U publication Critical patent/JPS58161319U/en
Pending legal-status Critical Current

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Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はＡＧＣ回路の従来例を示す回路図、第２図は本
考案に係るＡＧＣ増幅回路の一実施例を示す回路図であ
る。 １・・・光電変換部、２・・・可変利得増幅回路、３・
・・ホールド回路、４．７・・・コンパレータ、５．８
・・・レベル設定器、６・・・フォトアイソレータ、Ｐ
Ｂ・・・光電池。FIG. 1 is a circuit diagram showing a conventional example of an AGC circuit, and FIG. 2 is a circuit diagram showing an embodiment of an AGC amplifier circuit according to the present invention. DESCRIPTION OF SYMBOLS 1... Photoelectric conversion unit, 2... Variable gain amplifier circuit, 3...
...Hold circuit, 4.7...Comparator, 5.8
... Level setter, 6... Photo isolator, P
B...Photovoltaic cell.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）光電変換により読みとった画信号を受入するＡＧ
Ｃ増幅回路において、該回路の出力ピークレベルを検出
保持するピークレベル検出回路と、光電変換部の光源光
量を検出する光量検出部とを具え、前記ピークレベル検
出回路の出力を制御信号とするとともに前記光量検出部
の出力によって該制御信号にバイアスをかけたことを特
徴とするＡＧＣ増幅回路。(1) AG that accepts image signals read by photoelectric conversion
The C amplifier circuit includes a peak level detection circuit that detects and holds an output peak level of the circuit, and a light amount detection section that detects the amount of light from the light source of the photoelectric conversion section, and uses the output of the peak level detection circuit as a control signal. An AGC amplifier circuit characterized in that the control signal is biased by the output of the light amount detection section. （２）前記光量検出部は、光起電素子からなる実用新案
登録請求の範囲第（１）項記載のＡＧＣ増幅回路。(2) The AGC amplifier circuit according to claim (1), in which the light amount detection section includes a photovoltaic element.
JP5842082U 1982-04-23 1982-04-23 AGC amplifier circuit Pending JPS58161319U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5842082U JPS58161319U (en) 1982-04-23 1982-04-23 AGC amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5842082U JPS58161319U (en) 1982-04-23 1982-04-23 AGC amplifier circuit

Publications (1)

Publication Number Publication Date
JPS58161319U true JPS58161319U (en) 1983-10-27

Family

ID=30068810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5842082U Pending JPS58161319U (en) 1982-04-23 1982-04-23 AGC amplifier circuit

Country Status (1)

Country Link
JP (1) JPS58161319U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6490605A (en) * 1987-09-30 1989-04-07 Matsushita Electric Ind Co Ltd Agc circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6490605A (en) * 1987-09-30 1989-04-07 Matsushita Electric Ind Co Ltd Agc circuit

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