FR2298833A1 - Dispositif de detection de caracteres - Google Patents

Dispositif de detection de caracteres

Info

Publication number: FR2298833A1
Authority: FR; France
Prior art keywords: detection device; character detection; character; detection
Prior art date: 1975-01-22
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

FR7540214A

Other languages

English (en)

Other versions

FR2298833B1 (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.)

Xerox Corp

Original Assignee

Xerox 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.)

1975-01-22

Filing date

1975-12-31

Publication date

1976-08-20

1975-12-31 Application filed by Xerox Corp filed Critical Xerox Corp

1976-08-20 Publication of FR2298833A1 publication Critical patent/FR2298833A1/fr

1979-06-29 Application granted granted Critical

1979-06-29 Publication of FR2298833B1 publication Critical patent/FR2298833B1/fr

Status Granted legal-status Critical Current

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
- H04N1/403—Discrimination between the two tones in the picture signal of a two-tone original
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition
- G06V30/16—Image preprocessing
- G06V30/162—Quantising the image signal
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V30/00—Character recognition; Recognising digital ink; Document-oriented image-based pattern recognition
- G06V30/10—Character recognition

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Computer Vision & Pattern Recognition (AREA)
Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Theoretical Computer Science (AREA)
Signal Processing (AREA)
Character Input (AREA)
Facsimile Image Signal Circuits (AREA)
Length Measuring Devices By Optical Means (AREA)

FR7540214A 1975-01-22 1975-12-31 Dispositif de detection de caracteres Granted FR2298833A1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US05/543,024 US3987413A (en)	1975-01-22	1975-01-22	Detection system

Publications (2)

Publication Number	Publication Date
FR2298833A1 true FR2298833A1 (fr)	1976-08-20
FR2298833B1 FR2298833B1 (fr)	1979-06-29

Family

ID=24166275

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR7540214A Granted FR2298833A1 (fr)	1975-01-22	1975-12-31	Dispositif de detection de caracteres

Country Status (7)

Country	Link
US (1)	US3987413A (fr)
JP (1)	JPS5197940A (fr)
DE (1)	DE2553077A1 (fr)
FR (1)	FR2298833A1 (fr)
GB (1)	GB1524376A (fr)
NL (1)	NL7514285A (fr)
SE (1)	SE7514702L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2434532A1 (fr) *	1978-08-25	1980-03-21	Hell Rudolf Gmbh	Procede et dispositif pour l'empilage d'un signal video

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2437125A1 (fr) *	1978-09-21	1980-04-18	Cit Alcatel	Dispositif de traitement d'un signal d'analyse d'image
US4398221A (en) *	1980-09-01	1983-08-09	Ricoh Company, Ltd.	Facsimile apparatus
US4525747A (en) *	1981-08-06	1985-06-25	Toshiyuki Sakai	Analog-to-digital image signal conversion
JPH0719275B2 (ja) *	1986-07-08	1995-03-06	住友電気工業株式会社	二値化回路
JP2724006B2 (ja) *	1989-11-16	1998-03-09	オリンパス光学工業株式会社	２値化回路
KR980003918A (ko) *	1996-06-26	1998-03-30	김광호	화상 처리 장치에서 화상 데이타 스캔 장치 및 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3004224A (en) *	1956-10-04	1961-10-10	Sylvania Electric Prod	Variable gain circuit with outputs equal to product of selective inputs
US3187305A (en) *	1960-10-03	1965-06-01	Ibm	Character recognition systems
US3202042A (en) *	1962-08-06	1965-08-24	Jamieson Ballard	System for measuring separately background and average line luminance or density
USB420712I5 (fr) *	1964-12-23
GB1214153A (en) *	1967-07-31	1970-12-02	Nat Res Dev	Apparatus for analysing signals comprising excursions from a nominally constant background level
US3599148A (en) *	1969-04-22	1971-08-10	Burroughs Corp	Quantizing circuit correction for character recognition systems
US3660601A (en) *	1970-06-10	1972-05-02	Ibm	Frequency detection system
US3879707A (en) *	1972-12-20	1975-04-22	Ibm	Character recognition system for bar coded characters

1975
- 1975-01-22 US US05/543,024 patent/US3987413A/en not_active Expired - Lifetime
- 1975-10-20 GB GB42984/75A patent/GB1524376A/en not_active Expired
- 1975-11-26 DE DE19752553077 patent/DE2553077A1/de not_active Ceased
- 1975-12-08 NL NL7514285A patent/NL7514285A/xx not_active Application Discontinuation
- 1975-12-29 SE SE7514702A patent/SE7514702L/ not_active Application Discontinuation
- 1975-12-31 FR FR7540214A patent/FR2298833A1/fr active Granted
1976
- 1976-01-14 JP JP51003744A patent/JPS5197940A/ja active Pending

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2434532A1 (fr) *	1978-08-25	1980-03-21	Hell Rudolf Gmbh	Procede et dispositif pour l'empilage d'un signal video

Also Published As

Publication number	Publication date
NL7514285A (nl)	1976-07-26
JPS5197940A (fr)	1976-08-28
DE2553077A1 (de)	1976-07-29
FR2298833B1 (fr)	1979-06-29
SE7514702L (sv)	1976-07-23
GB1524376A (en)	1978-09-13
US3987413A (en)	1976-10-19

Publication	Publication Date	Title
FR2301851A1 (fr)	1976-09-17	Dispositif de traitem
FR2301416A1 (fr)	1976-09-17	Dispositif d
FR2331451A1 (fr)	1977-06-10	Dispositif graphique
BE843655A (fr)	1976-12-30	Dispositif de jonction
FR2330456A1 (fr)	1977-06-03	Dispositif de pipetage
FR2319891A1 (fr)	1977-02-25	Dispositif de detection de fuites su
FR2327681A1 (fr)	1977-05-06	Dispositif de correlation croisee
FR2313712A1 (fr)	1976-12-31	Dispositif logique de detection de sommes
FR2334870A1 (fr)	1977-07-08	Dispositif de raccordement
BE841702A (fr)	1976-09-01	Dispositif de securite
FR2323156A1 (fr)	1977-04-01	Dispositif detecteur de position
FR2326207A1 (fr)	1977-04-29	Dispositif de drainage
FR2302555A1 (fr)	1976-09-24	Dispositif de
FR2300419A1 (fr)	1976-09-03	Dispositif semi-cond
FR2301417A1 (fr)	1976-09-17	Dispositif an
RO69936A (fr)	1981-06-26	Dispositif de percement
FR2305784A1 (fr)	1976-10-22	Dispositif de multiplication
FR2329412A1 (fr)	1977-05-27	Dispositif de retenue
NL179027C (nl)	1986-07-01	Kleurdetectie-inrichting.
FR2300253A1 (fr)	1976-09-03	Dispositif
FR2325599A1 (fr)	1977-04-22	Dispositif de levage
FR2335820A1 (fr)	1977-07-15	Dispositif pyrotechnique
FR2307090A1 (fr)	1976-11-05	Dispositif de construction
FR2307994A1 (fr)	1976-11-12	Dispositif de pompage
BE849136A (fr)	1977-06-07	Dispositif de recurage

Legal Events

Date	Code	Title	Description
1979-09-28	ST	Notification of lapse

FR2298833A1 - Dispositif de detection de caracteres - Google Patents

Info

Links

Classifications

Landscapes

Applications Claiming Priority (1)

Publications (2)

Family

ID=24166275

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (6)

Family Cites Families (8)

Cited By (1)

Also Published As

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