JPS5773569A - Facimile transmission system - Google Patents

Facimile transmission system

Info

Publication number
JPS5773569A
JPS5773569A JP55149381A JP14938180A JPS5773569A JP S5773569 A JPS5773569 A JP S5773569A JP 55149381 A JP55149381 A JP 55149381A JP 14938180 A JP14938180 A JP 14938180A JP S5773569 A JPS5773569 A JP S5773569A
Authority
JP
Japan
Prior art keywords
line
fill bit
share
bit
transmission time
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
JP55149381A
Other languages
Japanese (ja)
Inventor
Mitsuru Kondo
Akira Konishi
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 JP55149381A priority Critical patent/JPS5773569A/en
Priority to US06/282,973 priority patent/US4386373A/en
Priority to DE3128414A priority patent/DE3128414C2/en
Publication of JPS5773569A publication Critical patent/JPS5773569A/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
    • H04N1/41—Bandwidth or redundancy reduction
    • H04N1/411—Bandwidth or redundancy reduction for the transmission or storage or reproduction of two-tone pictures, e.g. black and white pictures

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To increase the transmission efficiency and to enable mutual correspondence with different type of devices, by inserting fill bit in a plurality of line units and adopting the fill bit insertion system in every one line. CONSTITUTION:The video data in 32-bit toward the subscanning direction outputted from a reader 1 is stored in a memory block for M line's share in a buffer 5 and it is sequentially picked up from another memory block and outputted to a compression/decoding device 6. If the opposing set does not have buffer memory and the recording speed S is slow, the fill bit is inserted at one line each so that the transmission time per one line can be S. In case of the buffer memory for N line's share, the fill bit is inserted so that the transmission time per one line can be S and the fill bit is inserted for the time of[NXS-(N line's share of transmission time)]per N lines.
JP55149381A 1980-07-18 1980-10-27 Facimile transmission system Pending JPS5773569A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP55149381A JPS5773569A (en) 1980-10-27 1980-10-27 Facimile transmission system
US06/282,973 US4386373A (en) 1980-07-18 1981-07-13 Facsimile apparatus
DE3128414A DE3128414C2 (en) 1980-07-18 1981-07-17 Facsimile machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149381A JPS5773569A (en) 1980-10-27 1980-10-27 Facimile transmission system

Publications (1)

Publication Number Publication Date
JPS5773569A true JPS5773569A (en) 1982-05-08

Family

ID=15473880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149381A Pending JPS5773569A (en) 1980-07-18 1980-10-27 Facimile transmission system

Country Status (1)

Country Link
JP (1) JPS5773569A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219868A (en) * 1982-06-14 1983-12-21 Nec Corp Transmitting device of facsimile
JPS59115675A (en) * 1982-12-22 1984-07-04 Nec Corp Transmitter of picture signal
JPS59115674A (en) * 1982-12-22 1984-07-04 Nec Corp Picture signal receiver

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514767A (en) * 1978-07-18 1980-02-01 Nec Corp Facsimile transmission device
JPS5597566A (en) * 1978-09-22 1980-07-24 Norton Co Valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514767A (en) * 1978-07-18 1980-02-01 Nec Corp Facsimile transmission device
JPS5597566A (en) * 1978-09-22 1980-07-24 Norton Co Valve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58219868A (en) * 1982-06-14 1983-12-21 Nec Corp Transmitting device of facsimile
JPS59115675A (en) * 1982-12-22 1984-07-04 Nec Corp Transmitter of picture signal
JPS59115674A (en) * 1982-12-22 1984-07-04 Nec Corp Picture signal receiver

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