FR2143920A1 - - Google Patents

Info

Publication number
FR2143920A1
FR2143920A1 FR7223701A FR7223701A FR2143920A1 FR 2143920 A1 FR2143920 A1 FR 2143920A1 FR 7223701 A FR7223701 A FR 7223701A FR 7223701 A FR7223701 A FR 7223701A FR 2143920 A1 FR2143920 A1 FR 2143920A1
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.)
Withdrawn
Application number
FR7223701A
Other languages
French (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of FR2143920A1 publication Critical patent/FR2143920A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1411—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol conversion to or from pulse width coding
    • 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
    • G06K7/0166—Synchronisation of sensing process by means of clock-signals derived from the code marks, e.g. self-clocking code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Dc Digital Transmission (AREA)
FR7223701A 1971-07-01 1972-06-30 Withdrawn FR2143920A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15879971A 1971-07-01 1971-07-01
US23725672A 1972-03-23 1972-03-23

Publications (1)

Publication Number Publication Date
FR2143920A1 true FR2143920A1 (en) 1973-02-09

Family

ID=26855397

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7223701A Withdrawn FR2143920A1 (en) 1971-07-01 1972-06-30

Country Status (7)

Country Link
CA (1) CA955685A (en)
DE (1) DE2230067A1 (en)
ES (1) ES404459A1 (en)
FR (1) FR2143920A1 (en)
GB (1) GB1400561A (en)
NL (1) NL7209003A (en)
SE (1) SE383950B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443170A1 (en) * 1974-11-08 1980-06-27 Ibm METHOD FOR ENCODING DATA IN F2F CODE, AND METHOD AND APPARATUS FOR INTERPRETATION OF SUCH DATA
FR2446561A1 (en) * 1974-12-31 1980-08-08 Ibm Reader for distorted two-frequency bar code data - compensates for print speed and acceleration e.g. of hand-held probe
EP0329412A2 (en) * 1988-02-16 1989-08-23 M.R. Sensors Limited Reading and decoding recorded data at varying speeds using a magneto-resistive sensor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MY106779A (en) * 1990-09-07 1995-07-31 Mitsubishi Heavy Ind Ltd Magnetic recording method and circuit for toll road ticket.
US5708261A (en) * 1995-10-02 1998-01-13 Pitney Bowes Inc. Bar code decoding with speed compensation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443170A1 (en) * 1974-11-08 1980-06-27 Ibm METHOD FOR ENCODING DATA IN F2F CODE, AND METHOD AND APPARATUS FOR INTERPRETATION OF SUCH DATA
FR2446561A1 (en) * 1974-12-31 1980-08-08 Ibm Reader for distorted two-frequency bar code data - compensates for print speed and acceleration e.g. of hand-held probe
EP0329412A2 (en) * 1988-02-16 1989-08-23 M.R. Sensors Limited Reading and decoding recorded data at varying speeds using a magneto-resistive sensor
EP0329412A3 (en) * 1988-02-16 1990-05-16 Mr Sensors Ltd Reading and decoding recorded data

Also Published As

Publication number Publication date
DE2230067A1 (en) 1973-01-11
SE383950B (en) 1976-04-05
ES404459A1 (en) 1976-03-01
NL7209003A (en) 1973-01-03
GB1400561A (en) 1975-07-16
CA955685A (en) 1974-10-01

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Legal Events

Date Code Title Description
ST Notification of lapse