DE3636299C2 - - Google Patents

Info

Publication number
DE3636299C2
DE3636299C2 DE3636299A DE3636299A DE3636299C2 DE 3636299 C2 DE3636299 C2 DE 3636299C2 DE 3636299 A DE3636299 A DE 3636299A DE 3636299 A DE3636299 A DE 3636299A DE 3636299 C2 DE3636299 C2 DE 3636299C2
Authority
DE
Germany
Prior art keywords
signal
binary
level
video signal
level selection
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 - Lifetime
Application number
DE3636299A
Other languages
German (de)
English (en)
Other versions
DE3636299A1 (de
Inventor
Minoru Odawara Kanagawa Jp Oota
Toshihiro Kanagawa Jp Hananoi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3636299A1 publication Critical patent/DE3636299A1/de
Application granted granted Critical
Publication of DE3636299C2 publication Critical patent/DE3636299C2/de
Granted legal-status Critical Current

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Character Input (AREA)
DE19863636299 1985-10-24 1986-10-24 Verfahren zur binaercodierung und binaercodierschaltung fuer videosignale Granted DE3636299A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60236345A JPS6297079A (ja) 1985-10-24 1985-10-24 ビデオ信号の２値化回路

Publications (2)

Publication Number Publication Date
DE3636299A1 DE3636299A1 (de) 1987-04-30
DE3636299C2 true DE3636299C2 (OSRAM) 1990-03-01

Family

ID=16999432

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863636299 Granted DE3636299A1 (de) 1985-10-24 1986-10-24 Verfahren zur binaercodierung und binaercodierschaltung fuer videosignale

Country Status (3)

Country Link
US (1) US4896365A (OSRAM)
JP (1) JPS6297079A (OSRAM)
DE (1) DE3636299A1 (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130338A1 (de) * 1991-09-12 1993-03-18 Thomson Brandt Gmbh Schaltung mit einem a/d-wandler- oder d/a-wandler

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5065443A (en) * 1989-12-04 1991-11-12 Allen-Bradley Company, Inc. Image processor with illumination variation compensation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5218132A (en) * 1975-08-01 1977-02-10 Hitachi Ltd Binary circuit
DE2800759C3 (de) * 1978-01-09 1984-08-23 Dr.-Ing. Rudolf Hell Gmbh, 2300 Kiel Verfahren zur Umwandlung eines Videosignals in ein Zwei-Pegel-Signal
FR2437125A1 (fr) * 1978-09-21 1980-04-18 Cit Alcatel Dispositif de traitement d'un signal d'analyse d'image
JPS55105775A (en) * 1979-02-07 1980-08-13 Hitachi Ltd Binary coding system
JPS569879A (en) * 1979-07-04 1981-01-31 Fujitsu Ltd Binary-coding circuit control system
JPS5727376A (en) * 1980-07-24 1982-02-13 Ricoh Co Ltd Setting method for binary-coded threshold level
JPS5781687A (en) * 1980-11-08 1982-05-21 Fuji Electric Co Ltd Optimum binary-coding system
GB2103449B (en) * 1981-06-29 1985-05-30 Nippon Telegraph & Telephone Method and apparatus for gray level signal processing
JPS58109979A (ja) * 1981-12-23 1983-06-30 Mitsubishi Electric Corp 文字読取装置
DE3203559C2 (de) * 1982-02-03 1984-04-19 Siemens AG, 1000 Berlin und 8000 München Verfahren und Schaltungsanordnung zum Umsetzen von analogen Abtastsignalen in binäre Rechtecksignale
JPS58155481A (ja) * 1982-03-10 1983-09-16 Ricoh Co Ltd 画像２値化処理方式
US4674126A (en) * 1983-09-12 1987-06-16 Canon Kabushiki Kaisha Image signal processing apparatus
JPH0632072B2 (ja) * 1984-02-09 1994-04-27 日本電気株式会社 多値パタ−ン信号のスライス回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130338A1 (de) * 1991-09-12 1993-03-18 Thomson Brandt Gmbh Schaltung mit einem a/d-wandler- oder d/a-wandler

Also Published As

Publication number Publication date
JPS6297079A (ja) 1987-05-06
US4896365A (en) 1990-01-23
DE3636299A1 (de) 1987-04-30

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition