FR2660462B1 - METHOD AND DEVICE FOR READING INVISIBLE CODES. - Google Patents
METHOD AND DEVICE FOR READING INVISIBLE CODES.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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9004562A FR2660462B1 (en) | 1990-03-30 | 1990-03-30 | METHOD AND DEVICE FOR READING INVISIBLE CODES. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9004562A FR2660462B1 (en) | 1990-03-30 | 1990-03-30 | METHOD AND DEVICE FOR READING INVISIBLE CODES. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2660462A1 FR2660462A1 (en) | 1991-10-04 |
FR2660462B1 true FR2660462B1 (en) | 1992-07-31 |
Family
ID=9395599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9004562A Expired - Fee Related FR2660462B1 (en) | 1990-03-30 | 1990-03-30 | METHOD AND DEVICE FOR READING INVISIBLE CODES. |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2660462B1 (en) |
Families Citing this family (1)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1034685B (en) * | 1955-09-13 | 1958-07-24 | Werner Kluge Dr Ing | Photoelectric scanning device with a scanning head composed of a plurality of photoelectric cells arranged next to one another |
CH622369A5 (en) * | 1978-04-18 | 1981-03-31 | Radioelectrique Comp Ind | |
JPH0650535B2 (en) * | 1985-02-19 | 1994-06-29 | 日本電装株式会社 | Optical information reader |
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 (en) * | 1987-10-15 | 1989-04-21 | Boivin Didier | Method of identifying an object and device for implementing it |
FR2622992B1 (en) * | 1987-11-06 | 1990-02-09 | Thomson Semiconducteurs | METHOD FOR READING BAR CODES |
-
1990
- 1990-03-30 FR FR9004562A patent/FR2660462B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2660462A1 (en) | 1991-10-04 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |