DE3176885D1 - Picture signal reading method - Google Patents

Picture signal reading method

Info

Publication number: DE3176885D1
Authority: DE; Germany
Prior art keywords: picture signal; reading method; signal reading; picture; signal
Prior art date: 1980-11-17
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

Application number

DE8181903064T

Other languages

English (en)

Inventor

Takeshi Amemiya

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.)

Panasonic System Solutions Japan Co Ltd

Original Assignee

Fujitsu Ltd

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.)

1980-11-17

Filing date

1981-11-11

Publication date

1988-10-27

1981-11-11 Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd

1988-10-27 Application granted granted Critical

1988-10-27 Publication of DE3176885D1 publication Critical patent/DE3176885D1/de

Status Expired 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
- H04N1/41—Bandwidth or redundancy reduction
- H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
- H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information
- H04N1/415—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which the picture-elements are subdivided or grouped into fixed one-dimensional or two-dimensional blocks
- 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

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Signal Processing (AREA)
Facsimile Image Signal Circuits (AREA)
Facsimile Scanning Arrangements (AREA)

DE8181903064T 1980-11-17 1981-11-11 Picture signal reading method Expired DE3176885D1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP55161740A JPS5784670A (en)	1980-11-17	1980-11-17	Video signal read-in system
PCT/JP1981/000329 WO1982001798A1 (en)	1980-11-17	1981-11-11	System for reading variable scanning picture signal while moving threshold level

Publications (1)

Publication Number	Publication Date
DE3176885D1 true DE3176885D1 (en)	1988-10-27

Family

ID=15740975

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8181903064T Expired DE3176885D1 (en)	1980-11-17	1981-11-11	Picture signal reading method

Country Status (5)

Country	Link
US (1)	US4482922A (de)
EP (1)	EP0064557B1 (de)
JP (1)	JPS5784670A (de)
DE (1)	DE3176885D1 (de)
WO (1)	WO1982001798A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ATE190177T1 (de) *	1982-10-08	2000-03-15	Canon Kk	Bildverarbeitungsgerät
JPS60230767A (ja) *	1984-04-28	1985-11-16	Toshiba Corp	画像信号の二値化方式
DE3676784D1 (de)	1985-10-18	1991-02-14	Matsushita Graphic Communic	Korrektur-/lesegeraet bezogen auf eine vorangegangene aufzeichnung.
US4876605A (en) *	1987-01-12	1989-10-24	Oki Electric Industry Co., Ltd.	Image reading device

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3947627A (en) *	1972-10-30	1976-03-30	Matsushita Electric Industrial Company, Limited	Facsimile system
JPS5222494B2 (de) *	1972-12-15	1977-06-17
JPS5421051B2 (de) *	1973-03-30	1979-07-27
JPS5050810A (de) *	1973-09-05	1975-05-07
JPS52151513A (en) *	1976-06-11	1977-12-16	Hitachi Ltd	Binary signal generation device
JPS5341920A (en) *	1976-09-29	1978-04-15	Ricoh Co Ltd	Telautograph information reading device
JPS6019708B2 (ja) *	1977-03-28	1985-05-17	株式会社リコー	画信号２値化回路
JPS53146522A (en) *	1977-05-16	1978-12-20	Ricoh Co Ltd	Telautogram information extracting system
FR2425780A1 (fr) *	1978-05-12	1979-12-07	Cit Alcatel	Convertisseur auto-adaptatif en tout ou rien d'un signal d'analyse d'image
FR2437125A1 (fr) *	1978-09-21	1980-04-18	Cit Alcatel	Dispositif de traitement d'un signal d'analyse d'image
JPS55118272A (en) *	1979-03-05	1980-09-11	Mitsubishi Electric Corp	Picture processing unit
JPH0550810A (ja) *	1991-08-22	1993-03-02	Bridgestone Corp	空気入りタイヤ
JPH05341920A (ja) *	1992-06-05	1993-12-24	Nec Corp	パラレルディスク装置

1980
- 1980-11-17 JP JP55161740A patent/JPS5784670A/ja active Granted
1981
- 1981-11-11 WO PCT/JP1981/000329 patent/WO1982001798A1/ja active IP Right Grant
- 1981-11-11 DE DE8181903064T patent/DE3176885D1/de not_active Expired
- 1981-11-11 EP EP81903064A patent/EP0064557B1/de not_active Expired
- 1981-11-11 US US06/403,495 patent/US4482922A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0064557A4 (de)	1985-11-07
WO1982001798A1 (en)	1982-05-27
JPS628064B2 (de)	1987-02-20
EP0064557B1 (de)	1988-09-21
JPS5784670A (en)	1982-05-27
EP0064557A1 (de)	1982-11-17
US4482922A (en)	1984-11-13

Publication	Publication Date	Title
GB2069794B (en)	1983-11-23	Picture signal pre-processing method
GB2154095B (en)	1986-02-05	Image recording system
DE3173439D1 (en)	1986-02-20	Picture recording apparatus
GB2087683B (en)	1985-06-26	Video signal processing
GB2097968B (en)	1984-08-01	Information signal reproducing apparatus
DE3174443D1 (en)	1986-05-28	Method for reading drawings
DE3171330D1 (en)	1985-08-14	System for recording picture information
GB2096429B (en)	1985-07-31	Original reading apparatus
EP0083976A3 (en)	1986-04-23	Picture information reading apparatus
JPS5788314A (en)	1982-06-02	Data recorder
GB2082335B (en)	1985-08-07	Image reading apparatus
GB2070842B (en)	1983-07-06	Video signal reproducing apparatus
JPS56159782A (en)	1981-12-09	Time recorder
GB2086171B (en)	1983-12-21	Video signal reproducing apparatus
JPS56159801A (en)	1981-12-09	Recorder/reproducer system
GB2112608B (en)	1986-03-19	Coding method for multilever-gradated picture signal
GB2080600B (en)	1984-10-31	Video signal reproducing apparatus
JPS56168375A (en)	1981-12-24	Signal trnasmitter
DE3174661D1 (en)	1986-06-26	Signal reproduction apparatus
JPS57109460A (en)	1982-07-07	Recorder
JPS56159781A (en)	1981-12-09	Time recorder
JPS57113461A (en)	1982-07-14	Flexible-disk recorder
PH18833A (en)	1985-10-09	Video signal reproducing apparatus
JPS57111151A (en)	1982-07-10	Digital signal transmittng method
DE3176885D1 (en)	1988-10-27	Picture signal reading method

Legal Events

Date	Code	Title	Description
1989-10-19	8364	No opposition during term of opposition
1997-01-02	8327	Change in the person/name/address of the patent owner	Owner name: MATSUSHITA GRAPHIC COMMUNICATION SYSTEMS, INC., TO
1998-12-10	8339	Ceased/non-payment of the annual fee