FR2427578A1 - Punched card locating appts. - includes array of photodiodes supplying secondary light sources via optical fibres to produce light beams across path of card - Google Patents

Punched card locating appts. - includes array of photodiodes supplying secondary light sources via optical fibres to produce light beams across path of card

Info

Publication number
FR2427578A1
FR2427578A1 FR7816017A FR7816017A FR2427578A1 FR 2427578 A1 FR2427578 A1 FR 2427578A1 FR 7816017 A FR7816017 A FR 7816017A FR 7816017 A FR7816017 A FR 7816017A FR 2427578 A1 FR2427578 A1 FR 2427578A1
Authority
FR
France
Prior art keywords
card
fibres
light sources
appts
photodiodes
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.)
Granted
Application number
FR7816017A
Other languages
French (fr)
Other versions
FR2427578B1 (en
Inventor
Alexandre Bourdariat
Maurice Gaude
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.)
OPTION SA
Original Assignee
OPTION 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 OPTION SA filed Critical OPTION SA
Priority to FR7816017A priority Critical patent/FR2427578A1/en
Publication of FR2427578A1 publication Critical patent/FR2427578A1/en
Application granted granted Critical
Publication of FR2427578B1 publication Critical patent/FR2427578B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/04—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness specially adapted for measuring length or width of objects while moving
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/342—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells the sensed object being the obturating part
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/42—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using fluid means
    • G01D5/44—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using fluid means using jets of fluid
    • G01D5/46—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using fluid means using jets of fluid by deflecting or throttling the flow
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/01—Details
    • G06K7/016—Synchronisation of sensing process
    • 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
    • H03M1/34—Analogue value compared with reference values

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Optical Couplings Of Light Guides (AREA)

Abstract

The digital positioning device includes a number of light emitting sources which may be light emitting diodes. A source supplies these light with an excitation signal having a binary level of 0 or 1. Each light source is at one end of a bundle of p opical fibres, the second ends of the fibres being spaced apart. The ends of the fibres are arranged so that in order along the array of secondary light sources are the first fibres from each source in turn, then the second fibre from each source in turn. The light sources are arranged opposite phototransistors. There are p groups of n primary light receivers connected to p secondary receivers comprising phototransistors. The array is used to locate the position of a punched card in a punched card reader.
FR7816017A 1978-05-30 1978-05-30 Punched card locating appts. - includes array of photodiodes supplying secondary light sources via optical fibres to produce light beams across path of card Granted FR2427578A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7816017A FR2427578A1 (en) 1978-05-30 1978-05-30 Punched card locating appts. - includes array of photodiodes supplying secondary light sources via optical fibres to produce light beams across path of card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7816017A FR2427578A1 (en) 1978-05-30 1978-05-30 Punched card locating appts. - includes array of photodiodes supplying secondary light sources via optical fibres to produce light beams across path of card

Publications (2)

Publication Number Publication Date
FR2427578A1 true FR2427578A1 (en) 1979-12-28
FR2427578B1 FR2427578B1 (en) 1980-11-07

Family

ID=9208827

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816017A Granted FR2427578A1 (en) 1978-05-30 1978-05-30 Punched card locating appts. - includes array of photodiodes supplying secondary light sources via optical fibres to produce light beams across path of card

Country Status (1)

Country Link
FR (1) FR2427578A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054385A (en) * 1975-08-27 1977-10-18 Bell & Howell Limited Apparatus for determining the position of a spot of light on a plane surface

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4054385A (en) * 1975-08-27 1977-10-18 Bell & Howell Limited Apparatus for determining the position of a spot of light on a plane surface

Also Published As

Publication number Publication date
FR2427578B1 (en) 1980-11-07

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Legal Events

Date Code Title Description
ST Notification of lapse