JPS5745773A - Facsimile device - Google Patents

Facsimile device

Info

Publication number
JPS5745773A
JPS5745773A JP55119820A JP11982080A JPS5745773A JP S5745773 A JPS5745773 A JP S5745773A JP 55119820 A JP55119820 A JP 55119820A JP 11982080 A JP11982080 A JP 11982080A JP S5745773 A JPS5745773 A JP S5745773A
Authority
JP
Japan
Prior art keywords
outputted
threshold value
signal
cpu
parallel
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
JP55119820A
Other languages
Japanese (ja)
Inventor
Shingo Yamaguchi
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 JP55119820A priority Critical patent/JPS5745773A/en
Priority to US06/296,034 priority patent/US4398221A/en
Priority to DE3134542A priority patent/DE3134542C2/en
Publication of JPS5745773A publication Critical patent/JPS5745773A/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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures
    • H04N1/413—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information

Landscapes

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

Abstract

PURPOSE:To store a binary data with fidelity to an original at all times to an RAM through serial parallel conversion, by producing a threshold value with a video signal for a prescribed period outputted from a solidstate image sensor. CONSTITUTION:A timing counter 15 counts a clock (a) inputted usually, opens a gate G1 every prescribed value, produces an output c and outputs a corresponding signal d from a line synchronizing flag 18 to a slidstate scanning element 11 and gives interruption to a CPU. The video signal outputted from the element 11 is outputted to a binary circuit 12 according to a shift lock. After this signal binarized at a comparison circuit 122 based on the threshold value from a threshold value generating circuit 121, it is converted into a parallel 8-bit data via a serial parallel conversion register 13 and a tri-state buffer 14, and the video data for one line's share is stored in an RAM5 in parallel every 8-bit according to the read strobe signal g outputted from the CPU.
JP55119820A 1980-09-01 1980-09-01 Facsimile device Pending JPS5745773A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55119820A JPS5745773A (en) 1980-09-01 1980-09-01 Facsimile device
US06/296,034 US4398221A (en) 1980-09-01 1981-08-25 Facsimile apparatus
DE3134542A DE3134542C2 (en) 1980-09-01 1981-09-01 Facsimile machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55119820A JPS5745773A (en) 1980-09-01 1980-09-01 Facsimile device

Publications (1)

Publication Number Publication Date
JPS5745773A true JPS5745773A (en) 1982-03-15

Family

ID=14771050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55119820A Pending JPS5745773A (en) 1980-09-01 1980-09-01 Facsimile device

Country Status (1)

Country Link
JP (1) JPS5745773A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02244984A (en) * 1989-03-17 1990-09-28 Omron Tateisi Electron Co Ccd picture element interpolating device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02244984A (en) * 1989-03-17 1990-09-28 Omron Tateisi Electron Co Ccd picture element interpolating device

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