GB1113206A - A system for scanning a coded scale - Google Patents

A system for scanning a coded scale

Info

Publication number
GB1113206A
GB1113206A GB34756/65A GB3475665A GB1113206A GB 1113206 A GB1113206 A GB 1113206A GB 34756/65 A GB34756/65 A GB 34756/65A GB 3475665 A GB3475665 A GB 3475665A GB 1113206 A GB1113206 A GB 1113206A
Authority
GB
United Kingdom
Prior art keywords
scale
logic circuit
sensing elements
coded
gates
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.)
Expired
Application number
GB34756/65A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1113206A publication Critical patent/GB1113206A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01D5/347—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 using displacement encoding scales
    • G01D5/34776—Absolute encoders with analogue or digital scales
    • G01D5/34792—Absolute encoders with analogue or digital scales with only digital scales or both digital and incremental scales
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L17/00—Apparatus or local circuits for transmitting or receiving codes wherein each character is represented by the same number of equal-length code elements, e.g. Baudot code
    • H04L17/16—Apparatus or circuits at the receiving end
    • H04L17/30—Apparatus or circuits at the receiving end using electric or electronic translation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Optical Transform (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

1,113,206. Selective signalling. LICENTIA PATENT - VERWALTUNGS - G.m.b.H. 13 Aug., 1965 [17 Aug., 1964], No. 34756/65. Heading G4H. A coded-scale shaft-position digitizing system of the type in which sensing elements feed a logic circuit so as to produce the desired coded signals (e.g. pure binary from either lead/lag sensing elements or a Graz coded scale) is modified in that a store is interposed between the sensing elements and the logic circuit and in that the output of the logic circuit is fed to a set of gates, the store and gates being strobed by staggered clock-pulses produced independently of the motion of the scale. In this way spurious output combinations which might arise each time the scale moves because of the time taken by the logic circuit to recode correctly signals received from the sensing elements, are prevented.
GB34756/65A 1964-08-17 1965-08-13 A system for scanning a coded scale Expired GB1113206A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL48558A DE1224970B (en) 1964-08-17 1964-08-17 Arrangement for scanning a coded grid scale

Publications (1)

Publication Number Publication Date
GB1113206A true GB1113206A (en) 1968-05-08

Family

ID=7272532

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34756/65A Expired GB1113206A (en) 1964-08-17 1965-08-13 A system for scanning a coded scale

Country Status (4)

Country Link
CH (1) CH422361A (en)
DE (1) DE1224970B (en)
GB (1) GB1113206A (en)
NL (1) NL6510512A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0203897A1 (en) * 1985-04-26 1986-12-03 SiTek Lab AB Position-determining apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2382251A (en) * 1943-08-25 1945-08-14 Bell Telephone Labor Inc Telegraph perforator-transmitter
BE505508A (en) * 1950-08-30
BE529142A (en) * 1953-05-28
NL192674A (en) * 1953-11-27
NL104624C (en) * 1957-04-18
DE1102211B (en) * 1959-05-14 1961-03-16 Siemens Ag Method for recording and playing back pulse-coded messages on magnetic tapes
US3627990A (en) * 1960-02-29 1971-12-14 Addressograph Multigraph Sensing mechanisms

Also Published As

Publication number Publication date
NL6510512A (en) 1966-02-18
CH422361A (en) 1966-10-15
DE1224970B (en) 1966-09-15

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