FR2717572B1 - Codeur absolu produisant des formes d'ondes triangulaires déphasées pour la production de signaux à bits multiples. - Google Patents

Codeur absolu produisant des formes d'ondes triangulaires déphasées pour la production de signaux à bits multiples.

Info

Publication number
FR2717572B1
FR2717572B1 FR9503149A FR9503149A FR2717572B1 FR 2717572 B1 FR2717572 B1 FR 2717572B1 FR 9503149 A FR9503149 A FR 9503149A FR 9503149 A FR9503149 A FR 9503149A FR 2717572 B1 FR2717572 B1 FR 2717572B1
Authority
FR
France
Prior art keywords
production
phase shifted
bit signals
absolute encoder
producing phase
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 - Fee Related
Application number
FR9503149A
Other languages
English (en)
Other versions
FR2717572A1 (fr
Inventor
Mitsuru C O Copal C Yanagisawa
Takumi C O Copal Compan Fukuda
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.)
Nidec Copal Corp
Original Assignee
Nidec Copal 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
Priority claimed from JP07278094A external-priority patent/JP3479549B2/ja
Priority claimed from JP07277994A external-priority patent/JP3459113B2/ja
Application filed by Nidec Copal Corp filed Critical Nidec Copal Corp
Publication of FR2717572A1 publication Critical patent/FR2717572A1/fr
Application granted granted Critical
Publication of FR2717572B1 publication Critical patent/FR2717572B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03M1/12—Analogue/digital converters
    • H03M1/14—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
    • H03M1/143—Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit in pattern-reading type converters, e.g. having both absolute and incremental tracks on one disc or strip
    • 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
    • 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
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/26—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with weighted coding, i.e. the weight given to a digit depends on the position of the digit within the block or code word, e.g. there is a given radix and the weights are powers of this radix
    • 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
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/285—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding of the unit Hamming distance type, e.g. Gray code
    • 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
    • H03M1/22—Analogue/digital converters pattern-reading type
    • H03M1/24—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip
    • H03M1/28—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding
    • H03M1/30—Analogue/digital converters pattern-reading type using relatively movable reader and disc or strip with non-weighted coding incremental
    • H03M1/303—Circuits or methods for processing the quadrature signals

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Optical Transform (AREA)
FR9503149A 1994-03-17 1995-03-17 Codeur absolu produisant des formes d'ondes triangulaires déphasées pour la production de signaux à bits multiples. Expired - Fee Related FR2717572B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP07278094A JP3479549B2 (ja) 1994-03-17 1994-03-17 アブソリュートエンコーダ
JP07277994A JP3459113B2 (ja) 1994-03-17 1994-03-17 アブソリュートエンコーダ

Publications (2)

Publication Number Publication Date
FR2717572A1 FR2717572A1 (fr) 1995-09-22
FR2717572B1 true FR2717572B1 (fr) 1998-11-27

Family

ID=26413915

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9503149A Expired - Fee Related FR2717572B1 (fr) 1994-03-17 1995-03-17 Codeur absolu produisant des formes d'ondes triangulaires déphasées pour la production de signaux à bits multiples.

Country Status (3)

Country Link
US (1) US5699058A (fr)
DE (1) DE19509420B4 (fr)
FR (1) FR2717572B1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE458985T1 (de) * 2000-03-28 2010-03-15 Aim Controls Inc Drehgeber
FR2846492B1 (fr) * 2002-10-25 2005-01-14 Thales Sa Codeur angulaire optique double
JP4253501B2 (ja) * 2002-12-27 2009-04-15 オークマ株式会社 アブソリュート位置検出装置
US7046014B2 (en) * 2004-02-27 2006-05-16 Broadcom Corporation ATE measurement technique for comparator threshold voltage
FR2880682B1 (fr) * 2005-01-12 2007-04-20 Electricfil Automotive Soc Par Capteur de position a rapport cyclique desequilibre
US7521669B2 (en) * 2006-06-02 2009-04-21 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. Multi-bit absolute position optical encoder with reduced number of tracks
JP6032924B2 (ja) 2011-04-13 2016-11-30 キヤノン株式会社 エンコーダ
JP5755009B2 (ja) * 2011-04-14 2015-07-29 キヤノン株式会社 エンコーダ
JP5755010B2 (ja) 2011-04-14 2015-07-29 キヤノン株式会社 エンコーダ
JP5791340B2 (ja) 2011-04-14 2015-10-07 キヤノン株式会社 エンコーダ

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1169698A (en) * 1965-12-02 1969-11-05 Nat Res Dev Improvements in or relating to Positional Displacement Transducer Arrangements
US3487400A (en) * 1966-06-30 1969-12-30 Gen Electric System for extended resolution of a binary coded pattern device
US4870559A (en) * 1969-11-24 1989-09-26 Hyatt Gilbert P Intelligent transducer
GB2076147B (en) * 1980-05-15 1984-07-11 Ferranti Ltd Position encoder
JPS576994A (en) * 1980-06-17 1982-01-13 Tokyo Optical Coding board for encoder
JPS5980186A (ja) * 1982-10-26 1984-05-09 Fanuc Ltd モ−タのロ−タ位置検出回路
SU1107148A1 (ru) * 1983-04-11 1984-08-07 Институт радиофизики и электроники АН АрмССР Преобразователь угла поворота вала в код
DE3342940A1 (de) * 1983-11-26 1985-06-05 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Mehrstufiger winkelkodierer
US4978654A (en) * 1984-04-16 1990-12-18 Board Of Regents, The University Of Texas System Composition and method for treatment of disseminated fungal infections in mammals
ES2022272B3 (es) * 1986-12-22 1991-12-01 Siemens Ag Indicador de posicion de angulo de gran exactitud con trazas palpables de forma fotoelectrica
US4942394A (en) * 1987-12-21 1990-07-17 Pitney Bowes Inc. Hall effect encoder apparatus
US4893121A (en) * 1987-12-21 1990-01-09 Pitney Bowes Inc. Printwheel and encoder assembly
US5068529A (en) * 1988-12-22 1991-11-26 Nikon Corporation Absolute position detection encoder
US4970511A (en) * 1989-12-04 1990-11-13 Bei Electronics, Inc. Method and apparatus for n/(n-x) resolver encoder
JP3179493B2 (ja) * 1992-04-22 2001-06-25 日本電産コパル株式会社 アブソリュートエンコーダ

Also Published As

Publication number Publication date
DE19509420B4 (de) 2006-11-30
US5699058A (en) 1997-12-16
FR2717572A1 (fr) 1995-09-22
DE19509420A1 (de) 1995-09-21

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Legal Events

Date Code Title Description
ST Notification of lapse