JPS55159639A - Transmission circuit - Google Patents

Transmission circuit

Info

Publication number
JPS55159639A
JPS55159639A JP6787679A JP6787679A JPS55159639A JP S55159639 A JPS55159639 A JP S55159639A JP 6787679 A JP6787679 A JP 6787679A JP 6787679 A JP6787679 A JP 6787679A JP S55159639 A JPS55159639 A JP S55159639A
Authority
JP
Japan
Prior art keywords
led1
lowering
extend
dynamic range
corrected
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
JP6787679A
Other languages
Japanese (ja)
Inventor
Keiichi Suzuki
Takao Kamai
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP6787679A priority Critical patent/JPS55159639A/en
Publication of JPS55159639A publication Critical patent/JPS55159639A/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
    • H04B10/50—Transmitters
    • H04B10/58—Compensation for non-linear transmitter output
    • 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
    • H04B10/50—Transmitters
    • H04B10/501—Structural aspects
    • H04B10/502—LED transmitters

Landscapes

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

Abstract

PURPOSE:To extend the dynamic range without lowering S/N, by correcting the reception input signal to an input electric current linearly, in an optical analog signal transmission circuit using LED for the conversion element at the transmission section. CONSTITUTION:The nonlinearity of LED1 is corrected by providing a logarithmic converter 4 at the prestage of LED1 at the transmission side. The effective radiation flux phiR of the LED1 gives an effective radiation flux phiT to a photodetector 3 through an optical transmission medium 2 and the detector 3 receives it and outputs an output current IC. Thus, the reception output current IC to the input current is corrected linearly, allowing to extend the dynamic range without lowering S/N.
JP6787679A 1979-05-31 1979-05-31 Transmission circuit Pending JPS55159639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6787679A JPS55159639A (en) 1979-05-31 1979-05-31 Transmission circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6787679A JPS55159639A (en) 1979-05-31 1979-05-31 Transmission circuit

Publications (1)

Publication Number Publication Date
JPS55159639A true JPS55159639A (en) 1980-12-11

Family

ID=13357546

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6787679A Pending JPS55159639A (en) 1979-05-31 1979-05-31 Transmission circuit

Country Status (1)

Country Link
JP (1) JPS55159639A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010068027A (en) * 2008-09-08 2010-03-25 Nippon Telegr & Teleph Corp <Ntt> Optical transmitter
JP2012185773A (en) * 2011-03-08 2012-09-27 Sumitomo Electric Ind Ltd Optical beacon, uplink reception position specification program, and method for specifying uplink reception position

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349978A (en) * 1976-10-18 1978-05-06 Nec Corp Electric light converter of non-linear distortion compensation type

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5349978A (en) * 1976-10-18 1978-05-06 Nec Corp Electric light converter of non-linear distortion compensation type

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010068027A (en) * 2008-09-08 2010-03-25 Nippon Telegr & Teleph Corp <Ntt> Optical transmitter
JP2012185773A (en) * 2011-03-08 2012-09-27 Sumitomo Electric Ind Ltd Optical beacon, uplink reception position specification program, and method for specifying uplink reception position

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