FR2176556B1 - - Google Patents

Info

Publication number
FR2176556B1
FR2176556B1 FR7210224A FR7210224A FR2176556B1 FR 2176556 B1 FR2176556 B1 FR 2176556B1 FR 7210224 A FR7210224 A FR 7210224A FR 7210224 A FR7210224 A FR 7210224A FR 2176556 B1 FR2176556 B1 FR 2176556B1
Authority
FR
France
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
FR7210224A
Other versions
FR2176556A1 (fr
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.)
Radiotechnique Compelec RTC SA
Original Assignee
Radiotechnique Compelec RTC SA
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 Radiotechnique Compelec RTC SA filed Critical Radiotechnique Compelec RTC SA
Priority to FR7210224A priority Critical patent/FR2176556B1/fr
Priority to DE2313036A priority patent/DE2313036A1/de
Priority to NL7303772A priority patent/NL7303772A/xx
Priority to IT48947/73A priority patent/IT979945B/it
Priority to JP48033412A priority patent/JPS498263A/ja
Publication of FR2176556A1 publication Critical patent/FR2176556A1/fr
Application granted granted Critical
Publication of FR2176556B1 publication Critical patent/FR2176556B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/10—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage by converting frequency into a train of pulses, which are then counted, i.e. converting the signal into a square wave
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/40—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect
    • G01R13/404—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for discontinuous display, i.e. display of discrete values
    • G01R13/407—Arrangements for displaying electric variables or waveforms using modulation of a light beam otherwise than by mechanical displacement, e.g. by Kerr effect for discontinuous display, i.e. display of discrete values using a plurality of passive display elements, e.g. liquid crystal or Kerr-effect display elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
    • G01R19/255—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with counting of pulses during a period of time proportional to voltage or current, delivered by a pulse generator with fixed frequency
    • 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
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G9/00—Visual time or date indication means
    • G04G9/02—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques
    • G04G9/06—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals
    • G04G9/062—Visual time or date indication means by selecting desired characters out of a number of characters or by selecting indicating elements the position of which represent the time, e.g. by using multiplexing techniques using light valves, e.g. liquid crystals using multiplexing techniques
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K21/00—Details of pulse counters or frequency dividers
    • H03K21/08—Output circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/50—Analogue/digital converters with intermediate conversion to time interval

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
FR7210224A 1972-03-23 1972-03-23 Expired FR2176556B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR7210224A FR2176556B1 (fr) 1972-03-23 1972-03-23
DE2313036A DE2313036A1 (de) 1972-03-23 1973-03-16 Semianaloge darstellungsvorrichtung
NL7303772A NL7303772A (fr) 1972-03-23 1973-03-19
IT48947/73A IT979945B (it) 1972-03-23 1973-03-21 Dispositivo semianalogico di presentazione di dati
JP48033412A JPS498263A (fr) 1972-03-23 1973-03-23

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7210224A FR2176556B1 (fr) 1972-03-23 1972-03-23

Publications (2)

Publication Number Publication Date
FR2176556A1 FR2176556A1 (fr) 1973-11-02
FR2176556B1 true FR2176556B1 (fr) 1977-09-02

Family

ID=9095698

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7210224A Expired FR2176556B1 (fr) 1972-03-23 1972-03-23

Country Status (2)

Country Link
DE (1) DE2313036A1 (fr)
FR (1) FR2176556B1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932860A (en) * 1974-04-25 1976-01-13 Timex Corporation Electro-optical display with circuitry for applying predetermined potentials to all display segments to effect activation of a selected segment only
GB1577921A (en) * 1976-04-06 1980-10-29 Smiths Industries Ltd Display apparatus
FR2365174A1 (fr) * 1976-09-17 1978-04-14 Commissariat Energie Atomique Procede de commande d'un dispositif d'affichage analogique a bande discontinue de cristal liquide et circuit pour la mise en oeuvre de ce procede
CH601826A5 (fr) * 1976-12-24 1978-07-14 Bbc Brown Boveri & Cie
JPS6044621B2 (ja) * 1977-03-18 1985-10-04 ソニー株式会社 ピ−クホ−ルド回路
DE3034454A1 (de) * 1980-09-12 1982-04-15 Eurosil GmbH, 8000 München Quasi-analoge anzeigeeinrichtung
GB2166899B (en) * 1984-11-09 1987-12-16 Hitachi Ltd Liquid crystal display device

Also Published As

Publication number Publication date
DE2313036A1 (de) 1973-10-04
FR2176556A1 (fr) 1973-11-02

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Legal Events

Date Code Title Description
ST Notification of lapse