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JPS5617568A - Facsimile secondary scanning method - Google Patents

Facsimile secondary scanning method

Info

Publication number
JPS5617568A
JPS5617568A JP9265179A JP9265179A JPS5617568A JP S5617568 A JPS5617568 A JP S5617568A JP 9265179 A JP9265179 A JP 9265179A JP 9265179 A JP9265179 A JP 9265179A JP S5617568 A JPS5617568 A JP S5617568A
Authority
JP
Japan
Prior art keywords
secondary scanning
bit number
velocity
memory
stored bit
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
JP9265179A
Other languages
Japanese (ja)
Other versions
JPS5919663B2 (en
Inventor
Ryota Suzuki
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 JP54092651A priority Critical patent/JPS5919663B2/en
Publication of JPS5617568A publication Critical patent/JPS5617568A/en
Publication of JPS5919663B2 publication Critical patent/JPS5919663B2/en
Expired 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
    • H04N1/17—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa the scanning speed being dependent on content of picture

Landscapes

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

Abstract

PURPOSE:To ensure a smooth operation without stopping the secondary scanning and with the transmission variance kept at a fixed level or less, by setting previously N units of secondary scanning velocities and then selecting successively one of the set velocities according to the stored bit number of the buffer memoy. CONSTITUTION:Reference levels M1 and M2 are set at buffer memory 9, and the stored bit number of memory 9 is detected through memory stored bit number detecting circuit 11 at the time point when the secondary scanning of the preceding line is over. And the memory stored bit number signal is sent to secondary scanning control circuit 12. The scheduled secondary scanning velocity pattern is stored in circuit 12, and secondary scanning velocity V1 of the preceding line is maintained as it is with the bit number M of M1<=M<=M2. Then the velocity is increased more than V1 with O<M<M1; while the velocity slower than V1 is selected with M2< M respectively. Thus the driving control is given to secondary scanning motor 13.
JP54092651A 1979-07-23 1979-07-23 Facsimile sub-scanning method Expired JPS5919663B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54092651A JPS5919663B2 (en) 1979-07-23 1979-07-23 Facsimile sub-scanning method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54092651A JPS5919663B2 (en) 1979-07-23 1979-07-23 Facsimile sub-scanning method

Publications (2)

Publication Number Publication Date
JPS5617568A true JPS5617568A (en) 1981-02-19
JPS5919663B2 JPS5919663B2 (en) 1984-05-08

Family

ID=14060357

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54092651A Expired JPS5919663B2 (en) 1979-07-23 1979-07-23 Facsimile sub-scanning method

Country Status (1)

Country Link
JP (1) JPS5919663B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5878029A (en) * 1981-11-04 1983-05-11 Kajima Corp Air supplying and exhausting unit in outer wall of building
JPS5916462A (en) * 1982-07-20 1984-01-27 Toshiba Corp Subscanning system in band compression system facsimile device
US7550045B2 (en) * 2001-09-29 2009-06-23 Tamagawa Seiki Co., Ltd. Metal surface coating treatment device and surface coated metal manufacturing method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5878029A (en) * 1981-11-04 1983-05-11 Kajima Corp Air supplying and exhausting unit in outer wall of building
JPS6154143B2 (en) * 1981-11-04 1986-11-20 Kajima Corp
JPS5916462A (en) * 1982-07-20 1984-01-27 Toshiba Corp Subscanning system in band compression system facsimile device
US7550045B2 (en) * 2001-09-29 2009-06-23 Tamagawa Seiki Co., Ltd. Metal surface coating treatment device and surface coated metal manufacturing method

Also Published As

Publication number Publication date
JPS5919663B2 (en) 1984-05-08

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