JPS5738069A - Video processing system - Google Patents

Video processing system

Info

Publication number
JPS5738069A
JPS5738069A JP11362580A JP11362580A JPS5738069A JP S5738069 A JPS5738069 A JP S5738069A JP 11362580 A JP11362580 A JP 11362580A JP 11362580 A JP11362580 A JP 11362580A JP S5738069 A JPS5738069 A JP S5738069A
Authority
JP
Japan
Prior art keywords
lines
line
signal
character
character line
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
JP11362580A
Other languages
Japanese (ja)
Inventor
Hirokawa Hayashi
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 JP11362580A priority Critical patent/JPS5738069A/en
Publication of JPS5738069A publication Critical patent/JPS5738069A/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
    • H04N1/409—Edge or detail enhancement; Noise or error suppression
    • H04N1/4092—Edge or detail enhancement

Landscapes

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

Abstract

PURPOSE:To increase the playback video quality by binarization, by detecting the video information of lines read-in through scanning and sampling in video element unit if it is a character row or not, comparing and discriminating it with the result of detection of the lines before and after, and outputting the line if it is between lines in white level. CONSTITUTION:An input video signal BS of an original picture G is compared with a fixed threshold value S1 at an analog comparator 1 of a character line detection section A and converted into a binary signal, and an integrated output having the period of signal in synchronizing with the scanning of one line toward the main scanning direction x is obtained at an integration circuit 2. It is compared with a fixed threshold value S2 at a digital comparator 3 to output a signal d0 being 1 when the line is at character line a1... and being 0 when between lines b1.... Logical discrimination based on the result of detection of the present line and lines before and after is made with a character line/between lines informaion storage circuit 4 and a character line/between lines logical judging circuit 5, and the quality of playback picture can be increased by making the part between lines into white level compulsively with the reference according to the signal D.
JP11362580A 1980-08-19 1980-08-19 Video processing system Pending JPS5738069A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11362580A JPS5738069A (en) 1980-08-19 1980-08-19 Video processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11362580A JPS5738069A (en) 1980-08-19 1980-08-19 Video processing system

Publications (1)

Publication Number Publication Date
JPS5738069A true JPS5738069A (en) 1982-03-02

Family

ID=14616955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11362580A Pending JPS5738069A (en) 1980-08-19 1980-08-19 Video processing system

Country Status (1)

Country Link
JP (1) JPS5738069A (en)

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