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FR2660462B1 - Procede et dispositif de lecture de codes invisibles. - Google Patents

Procede et dispositif de lecture de codes invisibles.

Info

Publication number
FR2660462B1
FR2660462B1 FR9004562A FR9004562A FR2660462B1 FR 2660462 B1 FR2660462 B1 FR 2660462B1 FR 9004562 A FR9004562 A FR 9004562A FR 9004562 A FR9004562 A FR 9004562A FR 2660462 B1 FR2660462 B1 FR 2660462B1
Authority
FR
France
Prior art keywords
invisible codes
reading invisible
reading
codes
invisible
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
FR9004562A
Other languages
English (en)
Other versions
FR2660462A1 (fr
Inventor
Frixon Pierre
De Roux Christian
Ortega Camille
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.)
IXEA
Original Assignee
IXEA
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 IXEA filed Critical IXEA
Priority to FR9004562A priority Critical patent/FR2660462B1/fr
Publication of FR2660462A1 publication Critical patent/FR2660462A1/fr
Application granted granted Critical
Publication of FR2660462B1 publication Critical patent/FR2660462B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
    • G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
    • G06K7/10851—Circuits for pulse shaping, amplifying, eliminating noise signals, checking the function of the sensing device
    • 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
    • G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
    • G06K7/12—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation using a selected wavelength, e.g. to sense red marks and ignore blue marks

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Character Input (AREA)
FR9004562A 1990-03-30 1990-03-30 Procede et dispositif de lecture de codes invisibles. Expired - Fee Related FR2660462B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9004562A FR2660462B1 (fr) 1990-03-30 1990-03-30 Procede et dispositif de lecture de codes invisibles.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9004562A FR2660462B1 (fr) 1990-03-30 1990-03-30 Procede et dispositif de lecture de codes invisibles.

Publications (2)

Publication Number Publication Date
FR2660462A1 FR2660462A1 (fr) 1991-10-04
FR2660462B1 true FR2660462B1 (fr) 1992-07-31

Family

ID=9395599

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9004562A Expired - Fee Related FR2660462B1 (fr) 1990-03-30 1990-03-30 Procede et dispositif de lecture de codes invisibles.

Country Status (1)

Country Link
FR (1) FR2660462B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5418855A (en) * 1993-09-27 1995-05-23 Angstrom Technologies, Inc. Authentication system and method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1034685B (de) * 1955-09-13 1958-07-24 Werner Kluge Dr Ing Lichtelektrische Abtasteinrichtung mit einem Abtastkopf aus einer Vielzahl von nebeneinander angeordneten lichtelektrischen Zellen
CH622369A5 (fr) * 1978-04-18 1981-03-31 Radioelectrique Comp Ind
JPH0650535B2 (ja) * 1985-02-19 1994-06-29 日本電装株式会社 光学的情報読取装置
US4877949A (en) * 1986-08-08 1989-10-31 Norand Corporation Hand-held instant bar code reader system with automated focus based on distance measurements
FR2622031A1 (fr) * 1987-10-15 1989-04-21 Boivin Didier Procede d'identification d'un objet et dispositif pour la mise en oeuvre de celui-ci
FR2622992B1 (fr) * 1987-11-06 1990-02-09 Thomson Semiconducteurs Procede de lecture de codes a barres

Also Published As

Publication number Publication date
FR2660462A1 (fr) 1991-10-04

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Legal Events

Date Code Title Description
ST Notification of lapse