JPS56141668A - Read device - Google Patents

Read device

Info

Publication number
JPS56141668A
JPS56141668A JP4596180A JP4596180A JPS56141668A JP S56141668 A JPS56141668 A JP S56141668A JP 4596180 A JP4596180 A JP 4596180A JP 4596180 A JP4596180 A JP 4596180A JP S56141668 A JPS56141668 A JP S56141668A
Authority
JP
Japan
Prior art keywords
photodetecting
gates
transfer
sub
scanning direction
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
JP4596180A
Other languages
Japanese (ja)
Inventor
Yoshikazu Yokomizo
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 JP4596180A priority Critical patent/JPS56141668A/en
Publication of JPS56141668A publication Critical patent/JPS56141668A/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)
  • Fax Reproducing Arrangements (AREA)
  • Facsimile Heads (AREA)

Abstract

PURPOSE:To realize an emphasized contour in the sub-scanning direction without a video signal delaying circuit of 1 line portion, by utilizing a time required for moving an image in the distance of three photodetecting cells. CONSTITUTION:M and L show the main scanning direction and the sub-scanning direction, respectively. T1, T2, T3; S1, S2 and P1, P2, P3 show the photodetecting part shift gates, the stop gates and the transfer part shift gates, respectively, and the charge which has been stored in the photodetecting part 8 is shifted to the transfer part by these three kinds of gates. phi1, phi2, phi3 are transfer clocks, and transfer in the lateral direction the charge which has been shifted. When a time required for moving an image in the distance l of three photodetecting cells is made to be equal to a time of the main scanning 1 period, a delay time of 1 line portion is obtained from a difference of the optical read position in mechanical sub-scanning.
JP4596180A 1980-04-07 1980-04-07 Read device Pending JPS56141668A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4596180A JPS56141668A (en) 1980-04-07 1980-04-07 Read device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4596180A JPS56141668A (en) 1980-04-07 1980-04-07 Read device

Publications (1)

Publication Number Publication Date
JPS56141668A true JPS56141668A (en) 1981-11-05

Family

ID=12733841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4596180A Pending JPS56141668A (en) 1980-04-07 1980-04-07 Read device

Country Status (1)

Country Link
JP (1) JPS56141668A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144315A1 (en) * 1983-06-03 1985-06-19 Gravure Res Inst Screen gravure engraving method for electromechanical engravers.
JPS62179273A (en) * 1986-01-31 1987-08-06 Matsushita Electric Ind Co Ltd Image sensor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0144315A1 (en) * 1983-06-03 1985-06-19 Gravure Res Inst Screen gravure engraving method for electromechanical engravers.
JPS62179273A (en) * 1986-01-31 1987-08-06 Matsushita Electric Ind Co Ltd Image sensor

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