JPS5754468A - Image scanner drive system in scanning speed varying type facsimile device - Google Patents

Image scanner drive system in scanning speed varying type facsimile device

Info

Publication number
JPS5754468A
JPS5754468A JP12950980A JP12950980A JPS5754468A JP S5754468 A JPS5754468 A JP S5754468A JP 12950980 A JP12950980 A JP 12950980A JP 12950980 A JP12950980 A JP 12950980A JP S5754468 A JPS5754468 A JP S5754468A
Authority
JP
Japan
Prior art keywords
output
image scanner
decoder
drive system
scanning speed
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.)
Granted
Application number
JP12950980A
Other languages
Japanese (ja)
Other versions
JPS6210467B2 (en
Inventor
Tetsuya Takahashi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12950980A priority Critical patent/JPS5754468A/en
Publication of JPS5754468A publication Critical patent/JPS5754468A/en
Publication of JPS6210467B2 publication Critical patent/JPS6210467B2/ja
Granted 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
    • H04N1/40056—Circuits for driving or energising particular reading heads or original illumination means

Landscapes

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

Abstract

PURPOSE:To drive an image scanner so that subscanning speed can change smoothly, by picking up a single effective video signal within one subscanning period among effective video signals. CONSTITUTION:An FF19 produces an output when an output is produced at a decoder point (n), and when an output is given at point P of a decoder, an output is reset via a differentiation circuit 13. When the output of this FF19 is applied to an analog gate 30, the output video signal of a CCD image scanner is passed during the period of H level. Next, the operation of count of a counter 11 progresses and an output is produced at a terminal (m) of a decoder 17, then an output is produced at a terminal 4 of a counter decoder 16, an AND gate 20 is closed to stop the count. Thus, one effective signal per one scanning period can be picked up out of effective video signals.
JP12950980A 1980-09-18 1980-09-18 Image scanner drive system in scanning speed varying type facsimile device Granted JPS5754468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12950980A JPS5754468A (en) 1980-09-18 1980-09-18 Image scanner drive system in scanning speed varying type facsimile device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12950980A JPS5754468A (en) 1980-09-18 1980-09-18 Image scanner drive system in scanning speed varying type facsimile device

Publications (2)

Publication Number Publication Date
JPS5754468A true JPS5754468A (en) 1982-03-31
JPS6210467B2 JPS6210467B2 (en) 1987-03-06

Family

ID=15011244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12950980A Granted JPS5754468A (en) 1980-09-18 1980-09-18 Image scanner drive system in scanning speed varying type facsimile device

Country Status (1)

Country Link
JP (1) JPS5754468A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105766A (en) * 1982-12-10 1984-06-19 Fujitsu Ltd Original reader
JPS61232291A (en) * 1985-04-05 1986-10-16 株式会社荏原製作所 Method of operating fermentation cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59105766A (en) * 1982-12-10 1984-06-19 Fujitsu Ltd Original reader
JPS61232291A (en) * 1985-04-05 1986-10-16 株式会社荏原製作所 Method of operating fermentation cell

Also Published As

Publication number Publication date
JPS6210467B2 (en) 1987-03-06

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