JPS5738068A - Video processing system - Google Patents

Video processing system

Info

Publication number
JPS5738068A
JPS5738068A JP11362480A JP11362480A JPS5738068A JP S5738068 A JPS5738068 A JP S5738068A JP 11362480 A JP11362480 A JP 11362480A JP 11362480 A JP11362480 A JP 11362480A JP S5738068 A JPS5738068 A JP S5738068A
Authority
JP
Japan
Prior art keywords
signal
lines
line
scanning
compared
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
JP11362480A
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 JP11362480A priority Critical patent/JPS5738068A/en
Publication of JPS5738068A publication Critical patent/JPS5738068A/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)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Image Input (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To increase the reproduced picture quality through binarization, by detecting the video information of line read in through scanning and sampling in video element unit if it is a character row or a part between lines, and outputting the line in white level if the part is between lines. CONSTITUTION:An input video signal BS read in through scanning and sampling toward main scanning direction x and sub-scanning direction y for an original picture G in video element unit is compared with a fixed threshold value S1 at an analog comparator 1 of a character low detection section A and converted into a binary signal. The integrated output of the synchronized signal with the scanning of one line toward x is obtained, this output is compared with a fixed threshold value S2 at a digital comparator 3 to detect if the line is on the character row and a signal D being 1 at character rows a1... and being 0 at part between lines b1... is outputted. At an analog comparator 13 of a binary processing section C, the threshold level signals Sl are compared with the signal D for the set section B, and the part between lines are outputted compulsively with white level according to the determined reference to increase the quality of playback picture.
JP11362480A 1980-08-19 1980-08-19 Video processing system Pending JPS5738068A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11362480A JPS5738068A (en) 1980-08-19 1980-08-19 Video processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11362480A JPS5738068A (en) 1980-08-19 1980-08-19 Video processing system

Publications (1)

Publication Number Publication Date
JPS5738068A true JPS5738068A (en) 1982-03-02

Family

ID=14616927

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11362480A Pending JPS5738068A (en) 1980-08-19 1980-08-19 Video processing system

Country Status (1)

Country Link
JP (1) JPS5738068A (en)

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