FR2394928A1 - Procede de controle de validite des informations fournies par les capteurs numeriques de deplacement et capteurs utilisant ce procede - Google Patents

Procede de controle de validite des informations fournies par les capteurs numeriques de deplacement et capteurs utilisant ce procede

Info

Publication number
FR2394928A1
FR2394928A1 FR7718200A FR7718200A FR2394928A1 FR 2394928 A1 FR2394928 A1 FR 2394928A1 FR 7718200 A FR7718200 A FR 7718200A FR 7718200 A FR7718200 A FR 7718200A FR 2394928 A1 FR2394928 A1 FR 2394928A1
Authority
FR
France
Prior art keywords
sensors
digital
checking
validity
procedure
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
FR7718200A
Other languages
English (en)
Other versions
FR2394928B1 (fr
Inventor
Jacques Andre Josep Taillebois
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.)
MCB
Original Assignee
MCB
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 MCB filed Critical MCB
Priority to FR7718200A priority Critical patent/FR2394928A1/fr
Priority to US05/912,183 priority patent/US4311987A/en
Priority to GB7826774A priority patent/GB2000652B/en
Priority to DE2825842A priority patent/DE2825842C3/de
Publication of FR2394928A1 publication Critical patent/FR2394928A1/fr
Application granted granted Critical
Publication of FR2394928B1 publication Critical patent/FR2394928B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/14—Conversion to or from non-weighted codes
    • H03M7/16—Conversion to or from unit-distance codes, e.g. Gray code, reflected binary code
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1423—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code
    • G11B20/1426—Code representation depending on subsequent bits, e.g. delay modulation, double density code, Miller code conversion to or from block codes or representations thereof
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/18—Error detection or correction; Testing, e.g. of drop-outs
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Error Detection And Correction (AREA)

Abstract

L'invention concerne les capteurs numériques de déplacement. Elle a pour objet un procédé de contrôle des informations fournies par un capteur numérique à pistes codées. Celui-ci est conçu pour délivrer deux mots de même format, un mot A en code Gray et un mot D en code Gray complémenté et décalé en retard d'un demi-point de codage. On vérifie que l'écart numérique des deux mots délivrés par le capteur 40 correspond au décalage géométrique prévu à l'intérieur de celui-ci, au moyen d'étages de conversion en binaire naturel 41, 44 et de complémentation 42, 43, d'un additionneur 45 et d'une porte à coïncidence 46 délivrant un signal de validation V. Application à la détection d'erreurs dans les informations issues d'un capteur numérique.
FR7718200A 1977-06-14 1977-06-14 Procede de controle de validite des informations fournies par les capteurs numeriques de deplacement et capteurs utilisant ce procede Granted FR2394928A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7718200A FR2394928A1 (fr) 1977-06-14 1977-06-14 Procede de controle de validite des informations fournies par les capteurs numeriques de deplacement et capteurs utilisant ce procede
US05/912,183 US4311987A (en) 1977-06-14 1978-06-05 Validity check process for data supplied by digital displacement detectors and detectors using this process
GB7826774A GB2000652B (en) 1977-06-14 1978-06-13 Validity check method for a digital displacement detector and a detector having a validity check system
DE2825842A DE2825842C3 (de) 1977-06-14 1978-06-13 Verfahren zur Überwachung der Richtigkeit der von numerischen Schrittgebern gelieferten Informationen sowie Schrittgeber zur Durchführung des Verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7718200A FR2394928A1 (fr) 1977-06-14 1977-06-14 Procede de controle de validite des informations fournies par les capteurs numeriques de deplacement et capteurs utilisant ce procede

Publications (2)

Publication Number Publication Date
FR2394928A1 true FR2394928A1 (fr) 1979-01-12
FR2394928B1 FR2394928B1 (fr) 1982-10-22

Family

ID=9192075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7718200A Granted FR2394928A1 (fr) 1977-06-14 1977-06-14 Procede de controle de validite des informations fournies par les capteurs numeriques de deplacement et capteurs utilisant ce procede

Country Status (4)

Country Link
US (1) US4311987A (fr)
DE (1) DE2825842C3 (fr)
FR (1) FR2394928A1 (fr)
GB (1) GB2000652B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447117A2 (fr) * 1990-03-15 1991-09-18 AT&T Corp. Auto-test incorporé pour convertisseurs analogique-numérique

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3125383A1 (de) * 1981-06-27 1983-05-26 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Winkelcodierer
JPS5871726A (ja) * 1981-10-26 1983-04-28 Nec Corp アナログ−デジタル変換器
FR2583544B1 (fr) * 1985-06-14 1987-09-04 Mcb Dispositif de lecture de code optique, notamment du type entierement integre
DE3901535C1 (fr) * 1989-01-20 1990-07-26 Aeg Olympia Office Gmbh, 2940 Wilhelmshaven, De
DE19506019C2 (de) * 1995-02-22 2000-04-13 Telefunken Microelectron Verfahren zum Betrieb eines optischen Lenkwinkelsensors
US7031031B1 (en) * 2000-12-06 2006-04-18 Dr. Johannes Heidenhain Gmbh Position measuring system
DE10104373B4 (de) * 2000-12-06 2008-06-26 Dr. Johannes Heidenhain Gmbh Verfahren zur Funktionskontrolle einer Positionsmesseinrichtung und Positionsmesseinrichtung zur Durchführung des Verfahrens
US9178531B1 (en) 2013-04-24 2015-11-03 Seagate Technology Llc Servo gray code check bits
TWI680648B (zh) 2018-12-26 2019-12-21 財團法人工業技術研究院 編碼盤、檢光器、光學絕對式旋轉編碼器及編碼值輸出、偵錯與除錯的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2793807A (en) * 1952-10-18 1957-05-28 Bell Telephone Labor Inc Pulse code resolution
US2986726A (en) * 1957-04-08 1961-05-30 Baldwin Piano Co Analog to digital encoder
US3143730A (en) * 1959-08-27 1964-08-04 Gen Precision Inc Analog-digital converter
US3156911A (en) * 1959-11-27 1964-11-10 United Aircraft Corp Multiple-disk reflected binary encoder
DE1549265C3 (de) 1967-01-30 1973-11-15 August Sauter Kg, 7470 Ebingen Waage mit am Meßglied angeordnetem Merkmalstrager
US3913094A (en) * 1974-03-20 1975-10-14 Us Navy Count sequence test set for a disc type digital encoder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0447117A2 (fr) * 1990-03-15 1991-09-18 AT&T Corp. Auto-test incorporé pour convertisseurs analogique-numérique
EP0447117A3 (en) * 1990-03-15 1993-07-28 American Telephone And Telegraph Company Built-in self test for analog to digital converters

Also Published As

Publication number Publication date
DE2825842C3 (de) 1980-04-17
FR2394928B1 (fr) 1982-10-22
DE2825842A1 (de) 1978-12-21
GB2000652B (en) 1982-02-03
DE2825842B2 (de) 1979-08-09
GB2000652A (en) 1979-01-10
US4311987A (en) 1982-01-19

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Legal Events

Date Code Title Description
ST Notification of lapse