JPS59117864A - System for controlling data compression and expansion - Google Patents

System for controlling data compression and expansion

Info

Publication number
JPS59117864A
JPS59117864A JP23469582A JP23469582A JPS59117864A JP S59117864 A JPS59117864 A JP S59117864A JP 23469582 A JP23469582 A JP 23469582A JP 23469582 A JP23469582 A JP 23469582A JP S59117864 A JPS59117864 A JP S59117864A
Authority
JP
Japan
Prior art keywords
data
compression
compressed data
non
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
JP23469582A
Inventor
Yoshiyuki Okada
Toru Sato
Shigeru Yoshida
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP23469582A priority Critical patent/JPS59117864A/en
Publication of JPS59117864A publication Critical patent/JPS59117864A/en
Application status is Pending legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/41Bandwidth or redundancy reduction

Abstract

PURPOSE:To discriminate easily compression and non-compression in the unit of one line by comparing amount of compressed data and non-compressed data to a picture data for one line share and adding selectively a tag bit for compression information depending on the result of comparison. CONSTITUTION:The picture data for one line share of input original is stored in a non-compression data buffer 2, a compressed data is formed by a data compression section 1 and the data is stored in a compression data buffer 3. This compressed data is compared with a constant L at a data amount comparing section 4. The comparison section 4 transmits the result of comparison to a code generating section 5 and a multiplexer MPX6. When it is decided that the compressed data is less by the constant L, the MPX6 transmits the compressed data of the buffer 3 in succession to a code EOL+*1*2 from the generating section 5 and when decided much, the non-compressed data of the buffer 2 is transmitted in succession to the code EOL+*1*2. The *1 is a tag bit representing the distinction of one-dimention and two-dimension and the *2 is a tag bit representing the distinction of compression and non-compression.
JP23469582A 1982-12-24 1982-12-24 System for controlling data compression and expansion Pending JPS59117864A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23469582A JPS59117864A (en) 1982-12-24 1982-12-24 System for controlling data compression and expansion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23469582A JPS59117864A (en) 1982-12-24 1982-12-24 System for controlling data compression and expansion

Publications (1)

Publication Number Publication Date
JPS59117864A true JPS59117864A (en) 1984-07-07

Family

ID=16974962

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23469582A Pending JPS59117864A (en) 1982-12-24 1982-12-24 System for controlling data compression and expansion

Country Status (1)

Country Link
JP (1) JPS59117864A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6359464U (en) * 1986-10-08 1988-04-20
JPH0222731A (en) * 1988-07-11 1990-01-25 Fujitsu Ltd Data compressing device
JPH0222732A (en) * 1988-07-11 1990-01-25 Fujitsu Ltd Data compressing device
JPH05207178A (en) * 1992-01-28 1993-08-13 Nec Corp Modem
JP2006505215A (en) * 2002-10-30 2006-02-09 リバーベッド テクノロジー インコーポレーティッド Client - transaction accelerator server communication system
US8856222B2 (en) 2002-10-30 2014-10-07 Riverbed Technology, Inc. Transaction acceleration for client-server communication systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6359464U (en) * 1986-10-08 1988-04-20
JPH0222731A (en) * 1988-07-11 1990-01-25 Fujitsu Ltd Data compressing device
JPH0222732A (en) * 1988-07-11 1990-01-25 Fujitsu Ltd Data compressing device
JPH05207178A (en) * 1992-01-28 1993-08-13 Nec Corp Modem
JP2006505215A (en) * 2002-10-30 2006-02-09 リバーベッド テクノロジー インコーポレーティッド Client - transaction accelerator server communication system
US8762455B2 (en) 2002-10-30 2014-06-24 Riverbed Technology, Inc. Transaction accelerator for client-server communications systems
US8856222B2 (en) 2002-10-30 2014-10-07 Riverbed Technology, Inc. Transaction acceleration for client-server communication systems

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