WO2000067382A3 - Method and apparatus for data compression - Google Patents

Method and apparatus for data compression Download PDF

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Publication number
WO2000067382A3
WO2000067382A3 PCT/US2000/009585 US0009585W WO0067382A3 WO 2000067382 A3 WO2000067382 A3 WO 2000067382A3 US 0009585 W US0009585 W US 0009585W WO 0067382 A3 WO0067382 A3 WO 0067382A3
Authority
WO
WIPO (PCT)
Prior art keywords
codewords
data
http
message
messages
Prior art date
Application number
PCT/US2000/009585
Other languages
French (fr)
Other versions
WO2000067382A2 (en
Inventor
Robert Charles Booth
Original Assignee
Gen Instrument Corp
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 Gen Instrument Corp filed Critical Gen Instrument Corp
Priority to CA002372899A priority Critical patent/CA2372899C/en
Priority to AU42268/00A priority patent/AU4226800A/en
Publication of WO2000067382A2 publication Critical patent/WO2000067382A2/en
Publication of WO2000067382A3 publication Critical patent/WO2000067382A3/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/04—Protocols for data compression, e.g. ROHC

Abstract

A method and apparatus for compressing Internet protocol messages, such as HyperText Transport Protocol (HTTP) messages. Codewords (225) are provided for commonly occurring HTTP data elements, such as request lines, header lines, status lines, or portions thereof, such as method fields, URL fields, version fields, and status codes or messages. The codewords are used to provide a compressed HTTP message with a reduced amount of data relative to ASCII coding. If other data is included with the message, such as an entity body (e.g., a requested object such as an HTML page), the other data can be coded separately (215) and recombined (230) with the codewords for the HTTP data elements. The codewords may have reserved bits for providing specific information about the message. The amount of data that must be communicated, e.g., to or from a subscriber terminal (150), is thereby reduced. A message handler (340) decodes and processes the codewords. A compressed message handler (410) can be provided that processes/renders the compressed HTTP data (e.g., codewords) directly without decompressing them. The system is compatible with other compression techniques to provide even greater compression.
PCT/US2000/009585 1999-04-30 2000-04-10 Method and apparatus for data compression WO2000067382A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002372899A CA2372899C (en) 1999-04-30 2000-04-10 Method and apparatus for data compression
AU42268/00A AU4226800A (en) 1999-04-30 2000-04-10 Method and apparatus for compressing hypertext transfer protocol (http) messages

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13180799P 1999-04-30 1999-04-30
US60/131,807 1999-04-30
US09/439,026 1999-11-12
US09/439,026 US6345307B1 (en) 1999-04-30 1999-11-12 Method and apparatus for compressing hypertext transfer protocol (HTTP) messages

Publications (2)

Publication Number Publication Date
WO2000067382A2 WO2000067382A2 (en) 2000-11-09
WO2000067382A3 true WO2000067382A3 (en) 2001-03-01

Family

ID=26829816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/009585 WO2000067382A2 (en) 1999-04-30 2000-04-10 Method and apparatus for data compression

Country Status (4)

Country Link
US (1) US6345307B1 (en)
AU (1) AU4226800A (en)
CA (1) CA2372899C (en)
WO (1) WO2000067382A2 (en)

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Also Published As

Publication number Publication date
AU4226800A (en) 2000-11-17
WO2000067382A2 (en) 2000-11-09
CA2372899C (en) 2009-06-23
CA2372899A1 (en) 2000-11-09
US6345307B1 (en) 2002-02-05

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