JPS5728471A - Subscanning speed controller for facsimile - Google Patents

Subscanning speed controller for facsimile

Info

Publication number
JPS5728471A
JPS5728471A JP10347680A JP10347680A JPS5728471A JP S5728471 A JPS5728471 A JP S5728471A JP 10347680 A JP10347680 A JP 10347680A JP 10347680 A JP10347680 A JP 10347680A JP S5728471 A JPS5728471 A JP S5728471A
Authority
JP
Japan
Prior art keywords
memory
amount
speed
subscanning
buffer
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
JP10347680A
Other languages
Japanese (ja)
Inventor
Yasuharu Tomita
Takashi Mitsuoka
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 JP10347680A priority Critical patent/JPS5728471A/en
Publication of JPS5728471A publication Critical patent/JPS5728471A/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
    • H04N1/17—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 quickly and suitably perform the matching between the amount of production of a video signal and a transmission speed, by controlling the subscanning speed in response to the amount of storage of a buffer mimory. CONSTITUTION:A subscanning speed controller consists of a buffer memory 1, memory amount discriminating circuit 2, up/down counter 3, speed conversion read only memory 4, frequency dividing counter 5, and motor drive circuit 6. The buffer memory 1 stores a coded video signal and the memory content is transmitted to a transmission line with a transmitter. The data storage amount of the buffer memory 1 is discriminated at a memory amount discrimination circuit 2, and the signal according to the result of discrimination is given to the motor drive circuit 6 via the up/down counter 3, speed conversion read only memory 4 and the frequency dividing counter 5 for the control of subscanning speed.
JP10347680A 1980-07-28 1980-07-28 Subscanning speed controller for facsimile Pending JPS5728471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10347680A JPS5728471A (en) 1980-07-28 1980-07-28 Subscanning speed controller for facsimile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10347680A JPS5728471A (en) 1980-07-28 1980-07-28 Subscanning speed controller for facsimile

Publications (1)

Publication Number Publication Date
JPS5728471A true JPS5728471A (en) 1982-02-16

Family

ID=14355054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10347680A Pending JPS5728471A (en) 1980-07-28 1980-07-28 Subscanning speed controller for facsimile

Country Status (1)

Country Link
JP (1) JPS5728471A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63173458A (en) * 1986-12-22 1988-07-18 ゼロツクス　コーポレーシヨン Method and apparatus for variable speed scanning control
JPS63299672A (en) * 1987-05-29 1988-12-07 Matsushita Graphic Commun Syst Inc Facsimile equipment
JPH0584978A (en) * 1991-09-30 1993-04-06 Tokyo Electric Co Ltd Recording device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63173458A (en) * 1986-12-22 1988-07-18 ゼロツクス　コーポレーシヨン Method and apparatus for variable speed scanning control
JPS63299672A (en) * 1987-05-29 1988-12-07 Matsushita Graphic Commun Syst Inc Facsimile equipment
JPH0584978A (en) * 1991-09-30 1993-04-06 Tokyo Electric Co Ltd Recording device

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