JPS52106252A - Light transmission automatic gain control unit - Google Patents

Light transmission automatic gain control unit

Info

Publication number
JPS52106252A
JPS52106252A JP2290876A JP2290876A JPS52106252A JP S52106252 A JPS52106252 A JP S52106252A JP 2290876 A JP2290876 A JP 2290876A JP 2290876 A JP2290876 A JP 2290876A JP S52106252 A JPS52106252 A JP S52106252A
Authority
JP
Japan
Prior art keywords
light transmission
control unit
gain control
automatic gain
transmission automatic
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
JP2290876A
Other languages
Japanese (ja)
Inventor
Ichiu Watabe
Kiyoharu Inao
Masahiro Otani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works Ltd
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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP2290876A priority Critical patent/JPS52106252A/en
Publication of JPS52106252A publication Critical patent/JPS52106252A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To obtain AGC unit which features excellent response property and wide variable gain duration by detecting DC element piled on by modulation wave of transmission side in the light transmission system at reception side and by varying the gain of amplifier in order to make constant the detected DC element.
JP2290876A 1976-03-03 1976-03-03 Light transmission automatic gain control unit Pending JPS52106252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2290876A JPS52106252A (en) 1976-03-03 1976-03-03 Light transmission automatic gain control unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2290876A JPS52106252A (en) 1976-03-03 1976-03-03 Light transmission automatic gain control unit

Publications (1)

Publication Number Publication Date
JPS52106252A true JPS52106252A (en) 1977-09-06

Family

ID=12095728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2290876A Pending JPS52106252A (en) 1976-03-03 1976-03-03 Light transmission automatic gain control unit

Country Status (1)

Country Link
JP (1) JPS52106252A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5533324A (en) * 1978-08-30 1980-03-08 Hitachi Ltd Remote control receiver
JPS5817738A (en) * 1981-07-24 1983-02-02 Sumitomo Electric Ind Ltd Optical communication system
JPS5923642A (en) * 1982-07-09 1984-02-07 モトロ−ラ・インコ−ポレ−テツド Front end circuit for infrared ray receiver
JPS5950632A (en) * 1982-09-14 1984-03-23 Nippon Telegr & Teleph Corp <Ntt> Photoelectric conversion circuit
JPS6159928A (en) * 1984-08-20 1986-03-27 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Photoelectric signal converter
FR2621753A1 (en) * 1987-10-13 1989-04-14 Thomson Csf Automatic gain-control device and receiver including such a device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122909A (en) * 1974-08-16 1976-02-24 Toyota Motor Sales Co Ltd Nainenkikanno untenjotaihyojisochi

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5122909A (en) * 1974-08-16 1976-02-24 Toyota Motor Sales Co Ltd Nainenkikanno untenjotaihyojisochi

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5533324A (en) * 1978-08-30 1980-03-08 Hitachi Ltd Remote control receiver
JPS5817738A (en) * 1981-07-24 1983-02-02 Sumitomo Electric Ind Ltd Optical communication system
JPS5923642A (en) * 1982-07-09 1984-02-07 モトロ−ラ・インコ−ポレ−テツド Front end circuit for infrared ray receiver
JPS5950632A (en) * 1982-09-14 1984-03-23 Nippon Telegr & Teleph Corp <Ntt> Photoelectric conversion circuit
JPS6159928A (en) * 1984-08-20 1986-03-27 フィリップス　エレクトロニクス　ネムローゼ　フェンノートシャップ Photoelectric signal converter
FR2621753A1 (en) * 1987-10-13 1989-04-14 Thomson Csf Automatic gain-control device and receiver including such a device

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