JPS56165123A - Analog to digital converter - Google Patents

Analog to digital converter

Info

Publication number
JPS56165123A
JPS56165123A JP6874080A JP6874080A JPS56165123A JP S56165123 A JPS56165123 A JP S56165123A JP 6874080 A JP6874080 A JP 6874080A JP 6874080 A JP6874080 A JP 6874080A JP S56165123 A JPS56165123 A JP S56165123A
Authority
JP
Japan
Prior art keywords
modulator
light
input
rays
increase
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
JP6874080A
Other languages
Japanese (ja)
Inventor
Takao Matsumoto
Kiyoshi Nosu
Koichi Asatani
Tetsuya Miki
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6874080A priority Critical patent/JPS56165123A/en
Publication of JPS56165123A publication Critical patent/JPS56165123A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F7/00—Optical analogue/digital converters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

PURPOSE:To make it high-speed and to covert it to low power consumption by utilizing a light as a medium in a A/D converter. CONSTITUTION:A rays 3 from a light source 2 is divided with a beam splitter 4, and divided rays 5-8 are made incident to optical modulators 9-12. Each of the optical modulators 9-12 has input-output characteristics where a light output (a quantity of transmitted light) repeats its increase the decrease with an increase of an electric input level applied to an input terminal for the modulator, but each of half-wavelength voltage V1-V4 of the repetitive period is different and has a relation of Vi+1/Vi=2. Therefore, since during the modulator changes from off- state to on-state the modulators 10, 11, 12 repeat by 2, 4, 8 times respectively by converting outputs from each modulator into electrical signals to a detector 18 to be identified with a discriminator 19 at output terminals 20-23 the signal to which an input analog signal applied to a terminal 13 is digital-converted is provided.
JP6874080A 1980-05-23 1980-05-23 Analog to digital converter Pending JPS56165123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6874080A JPS56165123A (en) 1980-05-23 1980-05-23 Analog to digital converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6874080A JPS56165123A (en) 1980-05-23 1980-05-23 Analog to digital converter

Publications (1)

Publication Number Publication Date
JPS56165123A true JPS56165123A (en) 1981-12-18

Family

ID=13382477

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6874080A Pending JPS56165123A (en) 1980-05-23 1980-05-23 Analog to digital converter

Country Status (1)

Country Link
JP (1) JPS56165123A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587128A (en) * 1981-06-26 1983-01-14 トムソン−セエスエフ Optical analog/digital conversion method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587128A (en) * 1981-06-26 1983-01-14 トムソン−セエスエフ Optical analog/digital conversion method and apparatus

Similar Documents

Publication Publication Date Title
US5039988A (en) Optoelectronic digital to analog converter
AU469993B2 (en) Devise for converting an input voltage into an output signal current or visa versa
JPS56165123A (en) Analog to digital converter
JPS56135344A (en) Load controller for vehicle
EP0614074A4 (en) Optical wavelength measuring instrument.
JPS5769228A (en) Deterioration detection system for optical transmitting circuit
JPS5762573A (en) Multiple wavelength photoelectric converter
JPS56145534A (en) Semiconductor laser
JPS56162011A (en) Conversion system for mechanical displacement to electric signal and converting device
JPS5614926A (en) Photoelectric conversion circuit
JPS5480002A (en) Optical transmission/reception system
SU930712A1 (en) Frequency-distributing device
JPS56111678A (en) Laser recording device
SU930639A1 (en) Block of phase threshold elements
SU729838A1 (en) Converter
SU660493A1 (en) Multichannel electronic optical system
JPS54155709A (en) Corrector for quantity of light for photoelectric conversion
JPS5494291A (en) Modulating system
JPS5580937A (en) Wavelength multiple optical communication device
JPS5415686A (en) Photoelectric converting device
JPS644347A (en) Modulator
JPS56154632A (en) Photoelectric conversion circuit
SU688899A1 (en) Light flux regulator
SU966858A1 (en) Device for switching-on light emitting diode
SU659973A1 (en) Power factor- to-code converter