JPS5714983A - Control device for starting position of picture recording - Google Patents

Control device for starting position of picture recording

Info

Publication number
JPS5714983A
JPS5714983A JP8932280A JP8932280A JPS5714983A JP S5714983 A JPS5714983 A JP S5714983A JP 8932280 A JP8932280 A JP 8932280A JP 8932280 A JP8932280 A JP 8932280A JP S5714983 A JPS5714983 A JP S5714983A
Authority
JP
Japan
Prior art keywords
picture recording
detector
produced
frequency
output
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
JP8932280A
Other languages
Japanese (ja)
Inventor
Isamu Shibata
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 JP8932280A priority Critical patent/JPS5714983A/en
Publication of JPS5714983A publication Critical patent/JPS5714983A/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
    • H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
    • H04N1/047—Detection, control or error compensation of scanning velocity or position
    • H04N1/0473—Detection, control or error compensation of scanning velocity or position in subscanning direction, e.g. picture start or line-to-line synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Laser Beam Printer (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Fax Reproducing Arrangements (AREA)

Abstract

PURPOSE:To keep a constant starting position of picture recording in high accuracy, by counting the signals having the frequency and phase coinciding with the output of a beam position detector incorporating a slit pattern and then deciding the starting position of picture recording. CONSTITUTION:The repetitive signal having a frequency proportional to the speed of scan that scans the receiving surface of laser beam is produced by a beam position detector 9, and both the frequency and phase of the output of the detector 9 are stored at 20. Then the repetitive pulse having the frequency and phase coinciding with those of the output of the detector 9 is produced from a voltage control oscillator 21. The signal indicating the start of picture recording is produced for scanning when the output pulses of the oscillator 21 are counted by a counter 13 up to a prescribed value. Thus the video clock begins to emerge to start the picture recording based on the time point when the laser beam passes through the detector 9 and then when the PLL22 is produced in the number equal to the number of presets of the counter 13.
JP8932280A 1980-07-01 1980-07-01 Control device for starting position of picture recording Pending JPS5714983A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8932280A JPS5714983A (en) 1980-07-01 1980-07-01 Control device for starting position of picture recording

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8932280A JPS5714983A (en) 1980-07-01 1980-07-01 Control device for starting position of picture recording

Publications (1)

Publication Number Publication Date
JPS5714983A true JPS5714983A (en) 1982-01-26

Family

ID=13967426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8932280A Pending JPS5714983A (en) 1980-07-01 1980-07-01 Control device for starting position of picture recording

Country Status (1)

Country Link
JP (1) JPS5714983A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195362A (en) * 1982-05-11 1983-11-14 Toshiba Corp Recorder
JPS61167277A (en) * 1985-01-18 1986-07-28 Matsushita Electric Ind Co Ltd Upper margin setting circuit
JPS61232159A (en) * 1984-12-28 1986-10-16 アメリカン・ナショナル・キャン・カンパニー Tube vessel for distribution
JPS62246010A (en) * 1986-04-18 1987-10-27 Fuji Photo Film Co Ltd Light beam scanning device
JPS63180242U (en) * 1987-05-13 1988-11-21
JPS6467066A (en) * 1987-09-07 1989-03-13 Fuji Photo Film Co Ltd Optical beam scanning device
JPH03110512A (en) * 1989-09-26 1991-05-10 Canon Inc Light beam scanning device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58195362A (en) * 1982-05-11 1983-11-14 Toshiba Corp Recorder
JPS61232159A (en) * 1984-12-28 1986-10-16 アメリカン・ナショナル・キャン・カンパニー Tube vessel for distribution
JPS61167277A (en) * 1985-01-18 1986-07-28 Matsushita Electric Ind Co Ltd Upper margin setting circuit
JPS62246010A (en) * 1986-04-18 1987-10-27 Fuji Photo Film Co Ltd Light beam scanning device
JPS63180242U (en) * 1987-05-13 1988-11-21
JPS6467066A (en) * 1987-09-07 1989-03-13 Fuji Photo Film Co Ltd Optical beam scanning device
JPH03110512A (en) * 1989-09-26 1991-05-10 Canon Inc Light beam scanning device

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