JPS57115077A - Facsimile data transmission system - Google Patents

Facsimile data transmission system

Info

Publication number
JPS57115077A
JPS57115077A JP56000916A JP91681A JPS57115077A JP S57115077 A JPS57115077 A JP S57115077A JP 56000916 A JP56000916 A JP 56000916A JP 91681 A JP91681 A JP 91681A JP S57115077 A JPS57115077 A JP S57115077A
Authority
JP
Japan
Prior art keywords
data
compression system
compression
transmission procedure
data transmission
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
JP56000916A
Other languages
Japanese (ja)
Inventor
Toshiharu Naito
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56000916A priority Critical patent/JPS57115077A/en
Publication of JPS57115077A publication Critical patent/JPS57115077A/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
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device

Abstract

PURPOSE:To easily deal with plural data compression systems, by providing a promise for transmission procedure, and informing in advance a central computer of the compression system and the data quantity, when transmitting a facsimile data. CONSTITUTION:2 facsimile terminal equipments 1A, and 1B have each different data compression system, and a central computer 3 is capable of dealing with each data compression system. Also, the switching network is constituted of a telephone/data switchboard 2, a terminal subscriber line 4, a switching network junction circuit 5 and a computer subscriber line 6. Moreover, the data transmission procedure is constituted of a discriminating data of the data compression system, the quantity of a data before compression and the quantity of a data after compression. In this regard, the upper stage of the data transmission procedure uses a procedure stated in the advice of the International Telegraph and Telephone Consultative Committee.
JP56000916A 1981-01-07 1981-01-07 Facsimile data transmission system Pending JPS57115077A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56000916A JPS57115077A (en) 1981-01-07 1981-01-07 Facsimile data transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56000916A JPS57115077A (en) 1981-01-07 1981-01-07 Facsimile data transmission system

Publications (1)

Publication Number Publication Date
JPS57115077A true JPS57115077A (en) 1982-07-17

Family

ID=11487001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56000916A Pending JPS57115077A (en) 1981-01-07 1981-01-07 Facsimile data transmission system

Country Status (1)

Country Link
JP (1) JPS57115077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032476A (en) * 1983-08-03 1985-02-19 Nippon Telegr & Teleph Corp <Ntt> Method of changing expression level parameter in picture information transmission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6032476A (en) * 1983-08-03 1985-02-19 Nippon Telegr & Teleph Corp <Ntt> Method of changing expression level parameter in picture information transmission

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