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JPS5724160A - Facsimile system - Google Patents

Facsimile system

Info

Publication number
JPS5724160A
JPS5724160A JP9756680A JP9756680A JPS5724160A JP S5724160 A JPS5724160 A JP S5724160A JP 9756680 A JP9756680 A JP 9756680A JP 9756680 A JP9756680 A JP 9756680A JP S5724160 A JPS5724160 A JP S5724160A
Authority
JP
Japan
Prior art keywords
fill bit
line unit
data compression
memory
facsimile system
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
JP9756680A
Other languages
Japanese (ja)
Other versions
JPS6358428B2 (en
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 JP9756680A priority Critical patent/JPS5724160A/en
Priority to US06/282,973 priority patent/US4386373A/en
Priority to DE3128414A priority patent/DE3128414C2/en
Publication of JPS5724160A publication Critical patent/JPS5724160A/en
Publication of JPS6358428B2 publication Critical patent/JPS6358428B2/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
    • H04N1/41—Bandwidth or redundancy reduction

Landscapes

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

Abstract

PURPOSE:To increase the transmission efficiency through decreased amount of insertion of the entire fill bit, by inserting the fill bit according to the data compression rate every a plurality of lines in which the minimum transmission time is decided, in a facsimile system performing data compression. CONSTITUTION:A facsimile system is provided with a buffer memory 5 having the storage capacity X2-block for a plurality of lines' share, e.g., 32-line's share. After the initial set of the memory 5 and compression/decoding device 6, the read-in operation in 32-line unit is started through the instruction of the mechanism controller 4 with a system controller 10, and when one block of the memory 5 is filled in with video data, a device 6 is started for operation. In this case, the minimum transmission time in 32-line unit is determined and the fill bit is inserted every 32-line unit according to the data compression rate. Thus, the amount of insertion of fill bit as a whole can be reduced and the transmission efficiency can be increased.
JP9756680A 1980-07-18 1980-07-18 Facsimile system Granted JPS5724160A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9756680A JPS5724160A (en) 1980-07-18 1980-07-18 Facsimile 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
JP9756680A JPS5724160A (en) 1980-07-18 1980-07-18 Facsimile system

Publications (2)

Publication Number Publication Date
JPS5724160A true JPS5724160A (en) 1982-02-08
JPS6358428B2 JPS6358428B2 (en) 1988-11-15

Family

ID=14195775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9756680A Granted JPS5724160A (en) 1980-07-18 1980-07-18 Facsimile system

Country Status (1)

Country Link
JP (1) JPS5724160A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61240776A (en) * 1985-04-18 1986-10-27 Matsushita Graphic Commun Syst Inc Facsimile equipment

Citations (1)

* 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

Patent Citations (1)

* 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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61240776A (en) * 1985-04-18 1986-10-27 Matsushita Graphic Commun Syst Inc Facsimile equipment
JPH0374993B2 (en) * 1985-04-18 1991-11-28

Also Published As

Publication number Publication date
JPS6358428B2 (en) 1988-11-15

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