JPS56157145A - Optical receiver - Google Patents

Optical receiver

Info

Publication number
JPS56157145A
JPS56157145A JP6091480A JP6091480A JPS56157145A JP S56157145 A JPS56157145 A JP S56157145A JP 6091480 A JP6091480 A JP 6091480A JP 6091480 A JP6091480 A JP 6091480A JP S56157145 A JPS56157145 A JP S56157145A
Authority
JP
Japan
Prior art keywords
signal
circuit
binary
differentiated
converted
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
JP6091480A
Other languages
Japanese (ja)
Inventor
Takeshi Usui
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
NEC Corp
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP6091480A priority Critical patent/JPS56157145A/en
Publication of JPS56157145A publication Critical patent/JPS56157145A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To avoid a deterioration of characteristics caused by a fluctuation of DC level and thus to cope with a discontinuous signal as well as increase the receivable range of the optical input power, by performing a discrimination with a balanced code which is obtained by differentiating a binary pulse signal. CONSTITUTION:An optical reception signal 1 received of a binary intensity modulation is converted into an electric signal by an optical detector 11, amplified up to such a level as to cause no saturation through a preamplifier circuit 21 and differentiated by a differentiating circuit having a time constant smaller than the pulse duration of a reception signal to be converted into a bipolar balanced signal. This differentiated signal is amplified again by a main amplifier circuit 41 to be supplied to a discriminating circuit 51 having a hysteresis. The circuit 51 works like a Schmitt trigger, and accordingly a binary signal is reproduced.
JP6091480A 1980-05-08 1980-05-08 Optical receiver Pending JPS56157145A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6091480A JPS56157145A (en) 1980-05-08 1980-05-08 Optical receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6091480A JPS56157145A (en) 1980-05-08 1980-05-08 Optical receiver

Publications (1)

Publication Number Publication Date
JPS56157145A true JPS56157145A (en) 1981-12-04

Family

ID=13156118

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6091480A Pending JPS56157145A (en) 1980-05-08 1980-05-08 Optical receiver

Country Status (1)

Country Link
JP (1) JPS56157145A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348124A (en) * 2004-06-03 2005-12-15 Kawasaki Microelectronics Kk Digital signal input circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5127126A (en) * 1974-08-31 1976-03-06 Nippon Steel Corp Kanetsuro no nenshohoho
JPS52127703A (en) * 1976-04-19 1977-10-26 Fujitsu Ltd Light receiver circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5127126A (en) * 1974-08-31 1976-03-06 Nippon Steel Corp Kanetsuro no nenshohoho
JPS52127703A (en) * 1976-04-19 1977-10-26 Fujitsu Ltd Light receiver circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005348124A (en) * 2004-06-03 2005-12-15 Kawasaki Microelectronics Kk Digital signal input circuit

Similar Documents

Publication Publication Date Title
ES489554A1 (en) Waveform correction circuit.
JPS56157145A (en) Optical receiver
JPS5437403A (en) Automatic gain control method for light receiving circuit
JPS5434660A (en) Limiter circuit
JPS5564409A (en) Agc circuit of receiver
JPS6416036A (en) Automatic reception level control system for coherent light communication
JPS56169443A (en) Detecting circuit for input signal interruption
JPS5488704A (en) Automatic gain control system
JPS5580936A (en) Optical receiving circuit
JPS6416126A (en) S meter circuit for receiver
JPS6477307A (en) Automatic gain control circuit
JPS5775042A (en) Optical communication system
JPS574646A (en) Switch box system
EP0600091A4 (en) Digital signal receiver.
JPS57106208A (en) Ssb receiver
JPS5710472A (en) Ftc circuit in radar and similar device
JPS57208738A (en) Optical transmitter
JPS5639641A (en) Light communication system
JPS5591245A (en) Identification system for optical pcm signal reception
KR890007520A (en) Digital data transmission and reception circuit
JPS5665543A (en) Photoreceiver
JPS577645A (en) Optical receiving circuit
JPS6422122A (en) Light reception circuit
GB1010446A (en) Negative feedback phase detection receiving equipment
JPS56100539A (en) Light agc system