GB2135852B - Arrangement for converting an analog video signal into a two-level signal - Google Patents

Arrangement for converting an analog video signal into a two-level signal

Info

Publication number
GB2135852B
GB2135852B GB08404411A GB8404411A GB2135852B GB 2135852 B GB2135852 B GB 2135852B GB 08404411 A GB08404411 A GB 08404411A GB 8404411 A GB8404411 A GB 8404411A GB 2135852 B GB2135852 B GB 2135852B
Authority
GB
United Kingdom
Prior art keywords
converting
arrangement
analog video
signal
video signal
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
Application number
GB08404411A
Other languages
English (en)
Other versions
GB8404411D0 (en
GB2135852A (en
Inventor
Martinus Leonardus Gera Thoone
Roelof Hoekstra
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB8404411D0 publication Critical patent/GB8404411D0/en
Publication of GB2135852A publication Critical patent/GB2135852A/en
Application granted granted Critical
Publication of GB2135852B publication Critical patent/GB2135852B/en
Expired 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)
  • Collating Specific Patterns (AREA)
  • Picture Signal Circuits (AREA)
GB08404411A 1983-02-24 1984-02-20 Arrangement for converting an analog video signal into a two-level signal Expired GB2135852B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8300686A NL8300686A (nl) 1983-02-24 1983-02-24 Inrichting voor het omzetten van een analoog videosignaal in een tweewaardig signaal.

Publications (3)

Publication Number Publication Date
GB8404411D0 GB8404411D0 (en) 1984-03-28
GB2135852A GB2135852A (en) 1984-09-05
GB2135852B true GB2135852B (en) 1987-05-07

Family

ID=19841468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08404411A Expired GB2135852B (en) 1983-02-24 1984-02-20 Arrangement for converting an analog video signal into a two-level signal

Country Status (6)

Country Link
JP (1) JPS59161973A (ja)
BE (1) BE898990A (ja)
DE (1) DE3403792A1 (ja)
FR (1) FR2541838B1 (ja)
GB (1) GB2135852B (ja)
NL (1) NL8300686A (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0681258B2 (ja) * 1988-12-05 1994-10-12 三菱電機株式会社 イメージデータの二値化回路
JP2809447B2 (ja) * 1989-01-21 1998-10-08 株式会社リコー 画像処理装置
EP0548571A1 (en) * 1991-11-25 1993-06-30 Eastman Kodak Company System and method for bidirectional adaptive thresholding
FR2812985B1 (fr) * 2000-08-11 2003-08-22 Atmel Grenoble Sa Circuit de demodulation d'un signal logique transmis par des voies analogiques

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE323559C (de) * 1919-03-18 1920-07-29 Oscar Mey Vorrichtung zur willkuerlichen Auswahl der zu kontrollierenden Arbeiter und Angestellten in gewerblichen und kaufmaennischen Betrieben
US3500073A (en) * 1966-09-15 1970-03-10 Phonocopy Inc Analog to binary signal processor
US3566281A (en) * 1968-05-21 1971-02-23 Ibm Electric pulse wave clipping circuitry
CA974607A (en) * 1971-12-13 1975-09-16 Bendix Corporation (The) System for converting modulated signals to squarewave outputs
US3869698A (en) * 1973-11-29 1975-03-04 Mohawk Data Sciences Corp Optical character recognition video amplifier and digitizer
FR2437125A1 (fr) * 1978-09-21 1980-04-18 Cit Alcatel Dispositif de traitement d'un signal d'analyse d'image

Also Published As

Publication number Publication date
JPS59161973A (ja) 1984-09-12
FR2541838B1 (fr) 1987-10-09
JPH0439828B2 (ja) 1992-06-30
DE3403792A1 (de) 1984-08-30
BE898990A (fr) 1984-08-22
GB8404411D0 (en) 1984-03-28
FR2541838A1 (fr) 1984-08-31
NL8300686A (nl) 1984-09-17
GB2135852A (en) 1984-09-05

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee