JPS5758462A - Video pattern converter - Google Patents

Video pattern converter

Info

Publication number
JPS5758462A
JPS5758462A JP55132980A JP13298080A JPS5758462A JP S5758462 A JPS5758462 A JP S5758462A JP 55132980 A JP55132980 A JP 55132980A JP 13298080 A JP13298080 A JP 13298080A JP S5758462 A JPS5758462 A JP S5758462A
Authority
JP
Japan
Prior art keywords
pattern
bit
video
roms
rom
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
JP55132980A
Other languages
Japanese (ja)
Inventor
Takashi Takeda
Minoru Ogata
Asao Watanabe
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP55132980A priority Critical patent/JPS5758462A/en
Publication of JPS5758462A publication Critical patent/JPS5758462A/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
    • H04N1/40068—Modification of image resolution, i.e. determining the values of picture elements at new relative positions

Landscapes

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

Abstract

PURPOSE:To keep linking of original pattern, by accessing ROMs through taking the video pattern as an address signal and taking the output signal as a shrinked conversion pattern. CONSTITUTION:A serial video pattern is converted into a parallel pattern, and for example, white/black arrangement of five consecutive video elements are taken as arrangement of 1 and 0, and the binary pattern in 5-bit is taken as the address signal to access the ROMs. The output of the ROM is in 4-bit pattern and the shrinking of the pattern is made. For example, when the ROM is accessed with 5-bit pattern of a10, 4-bit pattern of R10 is outputted.
JP55132980A 1980-09-26 1980-09-26 Video pattern converter Pending JPS5758462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55132980A JPS5758462A (en) 1980-09-26 1980-09-26 Video pattern converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55132980A JPS5758462A (en) 1980-09-26 1980-09-26 Video pattern converter

Publications (1)

Publication Number Publication Date
JPS5758462A true JPS5758462A (en) 1982-04-08

Family

ID=15093971

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55132980A Pending JPS5758462A (en) 1980-09-26 1980-09-26 Video pattern converter

Country Status (1)

Country Link
JP (1) JPS5758462A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102550A2 (en) * 1982-08-10 1984-03-14 Siemens Aktiengesellschaft Circuit for adapting two picture processing systems having different resolutions
US4556918A (en) * 1982-12-27 1985-12-03 Kabushiki Kaisha Sakata Shokai Method and apparatus for generating screened halftone images

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102550A2 (en) * 1982-08-10 1984-03-14 Siemens Aktiengesellschaft Circuit for adapting two picture processing systems having different resolutions
EP0102550A3 (en) * 1982-08-10 1987-03-25 Siemens Aktiengesellschaft Circuit for adapting two picture processing systems having different resolutions
US4556918A (en) * 1982-12-27 1985-12-03 Kabushiki Kaisha Sakata Shokai Method and apparatus for generating screened halftone images

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