JPS5714253A - Video signal processing system - Google Patents

Video signal processing system

Info

Publication number
JPS5714253A
JPS5714253A JP8848280A JP8848280A JPS5714253A JP S5714253 A JPS5714253 A JP S5714253A JP 8848280 A JP8848280 A JP 8848280A JP 8848280 A JP8848280 A JP 8848280A JP S5714253 A JPS5714253 A JP S5714253A
Authority
JP
Japan
Prior art keywords
video signal
information
black
signal processing
white
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.)
Granted
Application number
JP8848280A
Other languages
Japanese (ja)
Other versions
JPS6031420B2 (en
Inventor
Kunio Yasumi
Shigeru Katsuragi
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP55088482A priority Critical patent/JPS6031420B2/en
Publication of JPS5714253A publication Critical patent/JPS5714253A/en
Publication of JPS6031420B2 publication Critical patent/JPS6031420B2/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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Image Generation (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To avoid the power consumption required for recording from being increased more even if an original includes much black information, by converting a part of black information in which the number of video elements consecutive in one dimensional serial video signal exceeds a given number into white information. CONSTITUTION:In case of a facsimile device, a digital video signal S1 in white and black binary value is picked up by comparing a primary dimensional serial analog video signal from a photo electric converter scanning the original with a voltage from a comparison voltage generator 6 at a comparator 5. This video signal S1 is applied to a transmission system 7 via a video signal processing circuit 11 consisting of shift registers 12, 14 and NAND gate 13, and a part of black information exceeding the number of consecutive video elements exceeds a given number (for example, a part excluding the beginning and end part of the black information) is converted into white information. The said video signal processing circuit 11 can be provided between the transmission system and a recording driver 8 at the reception side.
JP55088482A 1980-07-01 1980-07-01 Image signal processing method Expired JPS6031420B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55088482A JPS6031420B2 (en) 1980-07-01 1980-07-01 Image signal processing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55088482A JPS6031420B2 (en) 1980-07-01 1980-07-01 Image signal processing method

Publications (2)

Publication Number Publication Date
JPS5714253A true JPS5714253A (en) 1982-01-25
JPS6031420B2 JPS6031420B2 (en) 1985-07-22

Family

ID=13944005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55088482A Expired JPS6031420B2 (en) 1980-07-01 1980-07-01 Image signal processing method

Country Status (1)

Country Link
JP (1) JPS6031420B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62108409U (en) * 1985-12-27 1987-07-10

Also Published As

Publication number Publication date
JPS6031420B2 (en) 1985-07-22

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