JPS628980B2 - - Google Patents

Info

Publication number
JPS628980B2
JPS628980B2 JP56184506A JP18450681A JPS628980B2 JP S628980 B2 JPS628980 B2 JP S628980B2 JP 56184506 A JP56184506 A JP 56184506A JP 18450681 A JP18450681 A JP 18450681A JP S628980 B2 JPS628980 B2 JP S628980B2
Authority
JP
Japan
Prior art keywords
level
pulse
output
amplifier
image signal
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.)
Expired
Application number
JP56184506A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5887931A (ja
Inventor
Michuki Takemata
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.)
NEC Corp
Original Assignee
Nippon Electric Co 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 Nippon Electric Co Ltd filed Critical Nippon Electric Co Ltd
Priority to JP56184506A priority Critical patent/JPS5887931A/ja
Publication of JPS5887931A publication Critical patent/JPS5887931A/ja
Publication of JPS628980B2 publication Critical patent/JPS628980B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60Receivers
    • H04B10/66Non-coherent receivers, e.g. using direct detection
    • H04B10/69Electrical arrangements in the receiver
    • H04B10/691Arrangements for optimizing the photodetector in the receiver
    • H04B10/6911Photodiode bias control, e.g. for compensating temperature variations

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Optical Communication System (AREA)
JP56184506A 1981-11-19 1981-11-19 光受信レベル断検出方式 Granted JPS5887931A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56184506A JPS5887931A (ja) 1981-11-19 1981-11-19 光受信レベル断検出方式

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56184506A JPS5887931A (ja) 1981-11-19 1981-11-19 光受信レベル断検出方式

Publications (2)

Publication Number Publication Date
JPS5887931A JPS5887931A (ja) 1983-05-25
JPS628980B2 true JPS628980B2 (US07655688-20100202-C00010.png) 1987-02-25

Family

ID=16154378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56184506A Granted JPS5887931A (ja) 1981-11-19 1981-11-19 光受信レベル断検出方式

Country Status (1)

Country Link
JP (1) JPS5887931A (US07655688-20100202-C00010.png)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601938A (ja) * 1983-06-17 1985-01-08 Hitachi Cable Ltd 光受信回路
JPS60150338A (ja) * 1984-01-18 1985-08-08 Matsushita Electric Ind Co Ltd 光出力自動調整装置
JPH0746794B2 (ja) * 1984-05-18 1995-05-17 富士通株式会社 光通信方式

Also Published As

Publication number Publication date
JPS5887931A (ja) 1983-05-25

Similar Documents

Publication Publication Date Title
US4504976A (en) Device for regulating a laser diode
US3178515A (en) Plural modulation communication system
US5502810A (en) Optical transmission system
US5058103A (en) Bidirectional optical transmission system having a light-interruption detecting function
US5729373A (en) Reproducing circuit of monitor signal
JP2001045077A (ja) 振幅シフトキーイングデータ信号を復調する方法および装置
US5293260A (en) Optical repeater off-state supervisory method and device therefor
JPH08288916A (ja) 全光再生中継器の監視システム
JPS6331135B2 (US07655688-20100202-C00010.png)
JPS628980B2 (US07655688-20100202-C00010.png)
US4030034A (en) Overdrive protection circuit for power line carrier systems and the like
JP2626286B2 (ja) 光中継器監視制御信号伝送方式
US6034802A (en) Wireless communications systems with self threshold setting
JPS623623B2 (US07655688-20100202-C00010.png)
JP2616480B2 (ja) バースト光受信回路
JP2536178B2 (ja) 光送受信器
JPS6024606B2 (ja) 自動利得制御方式
JPS58164386A (ja) 光入力断検出回路
US3437750A (en) Automatic gain control circuit for facsimile recorder
JPH0340539A (ja) 光信号入力断検出装置
JPH0575543A (ja) 信号入力断検出回路
JPH0846568A (ja) 光受信装置
JPH05316159A (ja) 検波回路
JPH07212308A (ja) 信号断検出方式
JPS5814635A (ja) 光変復調装置