JPS5753177A - Picture signal reader - Google Patents

Picture signal reader

Info

Publication number
JPS5753177A
JPS5753177A JP12824880A JP12824880A JPS5753177A JP S5753177 A JPS5753177 A JP S5753177A JP 12824880 A JP12824880 A JP 12824880A JP 12824880 A JP12824880 A JP 12824880A JP S5753177 A JPS5753177 A JP S5753177A
Authority
JP
Japan
Prior art keywords
signal
picture signal
picture
processing
clock pulse
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
JP12824880A
Other languages
Japanese (ja)
Inventor
Hideaki Kanayama
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP12824880A priority Critical patent/JPS5753177A/en
Publication of JPS5753177A publication Critical patent/JPS5753177A/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
    • H04N1/419—Systems or arrangements allowing the picture to be reproduced without loss or modification of picture-information in which encoding of the length of a succession of picture-elements of the same value along a scanning line is the only encoding step

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

PURPOSE:To transfer a signal without a buffer, by transferring the picture signal synchronously with the progress of the processing in a signal processing part. CONSTITUTION:A picture 1 is sent to a photoelectric converting part 3 as optical signal by a light source 2 and is conveted to a picture signal. When the processing of a processing unit for the picture signal is completed, a signal processing part 5 sends a signal 20 to a readout control part 6 to instruct the readout of the picture signal. The readout control part 6 sends a clock pulse 21 of a variable period, which is synchronized with the timing of the signal 20, to the photoelectric converting part as a readout signal. The converting part 3 which receives the clock pulse transfers a picture signal 22 of a processing unit to the signal processing part 5 synchronously with the clock pulse 21. The control part 6 transfers a signal which indicates the timing of driving for scanning, to a scanning control part 7 in parallel with the clock pulse, and a driving signal 16 of a motor 8 for scanning the original is generated to scan the original. Thus, the picture signal is transferred without a buffer.
JP12824880A 1980-09-16 1980-09-16 Picture signal reader Pending JPS5753177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12824880A JPS5753177A (en) 1980-09-16 1980-09-16 Picture signal reader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12824880A JPS5753177A (en) 1980-09-16 1980-09-16 Picture signal reader

Publications (1)

Publication Number Publication Date
JPS5753177A true JPS5753177A (en) 1982-03-30

Family

ID=14980152

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12824880A Pending JPS5753177A (en) 1980-09-16 1980-09-16 Picture signal reader

Country Status (1)

Country Link
JP (1) JPS5753177A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997268A (en) * 1982-11-27 1984-06-05 Minolta Camera Co Ltd Picture reader

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5997268A (en) * 1982-11-27 1984-06-05 Minolta Camera Co Ltd Picture reader
JPH0230625B2 (en) * 1982-11-27 1990-07-09 Minolta Camera Kk

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