JPS5724162A - Optical scanning device - Google Patents

Optical scanning device

Info

Publication number
JPS5724162A
JPS5724162A JP9905480A JP9905480A JPS5724162A JP S5724162 A JPS5724162 A JP S5724162A JP 9905480 A JP9905480 A JP 9905480A JP 9905480 A JP9905480 A JP 9905480A JP S5724162 A JPS5724162 A JP S5724162A
Authority
JP
Japan
Prior art keywords
mirror surface
circuit
frequency
signals
synchronizing
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
JP9905480A
Other languages
Japanese (ja)
Other versions
JPS647717B2 (en
Inventor
Naotoshi Ito
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.)
KIKAI SYST SHINKO KYOKAI
KIKAI SYSTEM SHINKO KOKAI
Panasonic System Solutions Japan Co Ltd
Original Assignee
KIKAI SYST SHINKO KYOKAI
KIKAI SYSTEM SHINKO KOKAI
Matsushita Graphic Communication Systems 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 KIKAI SYST SHINKO KYOKAI, KIKAI SYSTEM SHINKO KOKAI, Matsushita Graphic Communication Systems Inc filed Critical KIKAI SYST SHINKO KYOKAI
Priority to JP9905480A priority Critical patent/JPS5724162A/en
Publication of JPS5724162A publication Critical patent/JPS5724162A/en
Publication of JPS647717B2 publication Critical patent/JPS647717B2/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
    • H04N1/04—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
    • H04N1/053—Detection, control or error compensation of scanning velocity or position in main scanning direction, e.g. synchronisation of line start or picture elements in a line

Landscapes

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

Abstract

PURPOSE:To correct the uneven scanning speed, by presetting the scanning speed unevenness corresponding to a split angle error of a rotating polygonal mirror after being converted into an electric quantity every mirror surface. CONSTITUTION:A frequency to correct the scanning speed unevenness every mirror surface at the final stage storage circuit 12, is obtained, and this frequency is divided by a frequency multiplier of a phase locked oscillation circuit 11 of the pre-stage, resulting that a voltage level where a voltage variable oscillation circuit 10 can be operated is obtained, and the outputs are taken as e1-en through a preset 8. On the other hand, mirror surface synchronizing signals f1-fn in synchronizing with the rotation of the rotating polygonal mirror 1 are obtained at a mirror surface synchronizing with the rotation of the rotating polygonal mirror 1 are obtained at a mirror surface synchronizing circuit 7. Next, the signals e1-en are automatically switched with the signals f1-fn sequentially at a mirror surface switching circuit 9, and the frequency corresponding to the signals e1-en is sequentially oscillated 10, and the inputted frequency at the circuit 11 is multiplied. Further, it is used when a video signal is written in or read out at a storage circuit 12.
JP9905480A 1980-07-18 1980-07-18 Optical scanning device Granted JPS5724162A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9905480A JPS5724162A (en) 1980-07-18 1980-07-18 Optical scanning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9905480A JPS5724162A (en) 1980-07-18 1980-07-18 Optical scanning device

Publications (2)

Publication Number Publication Date
JPS5724162A true JPS5724162A (en) 1982-02-08
JPS647717B2 JPS647717B2 (en) 1989-02-09

Family

ID=14236911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9905480A Granted JPS5724162A (en) 1980-07-18 1980-07-18 Optical scanning device

Country Status (1)

Country Link
JP (1) JPS5724162A (en)

Also Published As

Publication number Publication date
JPS647717B2 (en) 1989-02-09

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