JPS6297079A - ビデオ信号の２値化回路 - Google Patents

ビデオ信号の２値化回路

Info

Publication number
JPS6297079A
JPS6297079A JP60236345A JP23634585A JPS6297079A JP S6297079 A JPS6297079 A JP S6297079A JP 60236345 A JP60236345 A JP 60236345A JP 23634585 A JP23634585 A JP 23634585A JP S6297079 A JPS6297079 A JP S6297079A
Authority
JP
Japan
Prior art keywords
video signal
signal
black
output
slice
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.)
Pending
Application number
JP60236345A
Other languages
English (en)
Japanese (ja)
Inventor
Minoru Oota
実 太田
Toshihiro Hananoi
花野井　歳弘
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
Priority to JP60236345A priority Critical patent/JPS6297079A/ja
Priority to DE19863636299 priority patent/DE3636299A1/de
Publication of JPS6297079A publication Critical patent/JPS6297079A/ja
Priority to US07/268,611 priority patent/US4896365A/en
Pending 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)
JP60236345A 1985-10-24 1985-10-24 ビデオ信号の２値化回路 Pending JPS6297079A (ja)

Priority Applications (3)

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
DE19863636299 DE3636299A1 (de) 1985-10-24 1986-10-24 Verfahren zur binaercodierung und binaercodierschaltung fuer videosignale
US07/268,611 US4896365A (en) 1985-10-24 1988-11-07 Video signal binary-coding apparatus and method

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 (1)

Publication Number Publication Date
JPS6297079A true JPS6297079A (ja) 1987-05-06

Family

ID=16999432

Family Applications (1)

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

Country Status (3)

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

Families Citing this family (2)

* 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
DE4130338A1 (de) * 1991-09-12 1993-03-18 Thomson Brandt Gmbh Schaltung mit einem a/d-wandler- oder d/a-wandler

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Family Cites Families (11)

* 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
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Also Published As

Publication number Publication date
DE3636299C2 (OSRAM) 1990-03-01
US4896365A (en) 1990-01-23
DE3636299A1 (de) 1987-04-30

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