DE3850035T2 - Datenkomprimierungssystem mit Expandierungsschutz. - Google Patents

Datenkomprimierungssystem mit Expandierungsschutz.

Info

Publication number
DE3850035T2
DE3850035T2 DE3850035T DE3850035T DE3850035T2 DE 3850035 T2 DE3850035 T2 DE 3850035T2 DE 3850035 T DE3850035 T DE 3850035T DE 3850035 T DE3850035 T DE 3850035T DE 3850035 T2 DE3850035 T2 DE 3850035T2
Authority
DE
Germany
Prior art keywords
data compression
compression system
expansion protection
expansion
protection
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.)
Expired - Lifetime
Application number
DE3850035T
Other languages
English (en)
Other versions
DE3850035D1 (de
Inventor
Maren David J Van
Jeff J Kato
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.)
Hewlett Packard Development Co LP
Original Assignee
Hewlett Packard Co
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 Hewlett Packard Co filed Critical Hewlett Packard Co
Publication of DE3850035D1 publication Critical patent/DE3850035D1/de
Application granted granted Critical
Publication of DE3850035T2 publication Critical patent/DE3850035T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F40/00—Handling natural language data
    • G06F40/10—Text processing
    • G06F40/12—Use of codes for handling textual entities
    • 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
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H03M7/42—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code using table look-up for the coding or decoding process, e.g. using read-only memory
    • 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
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H03M7/48—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficientlylong runs of digits of the same kind are present
DE3850035T 1987-10-19 1988-08-03 Datenkomprimierungssystem mit Expandierungsschutz. Expired - Lifetime DE3850035T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/109,969 US4870415A (en) 1987-10-19 1987-10-19 Data compression system with expansion protection

Publications (2)

Publication Number Publication Date
DE3850035D1 DE3850035D1 (de) 1994-07-14
DE3850035T2 true DE3850035T2 (de) 1995-02-02

Family

ID=22330563

Family Applications (1)

Application Number Title Priority Date Filing Date
DE3850035T Expired - Lifetime DE3850035T2 (de) 1987-10-19 1988-08-03 Datenkomprimierungssystem mit Expandierungsschutz.

Country Status (4)

Country Link
US (1) US4870415A (de)
EP (1) EP0313191B1 (de)
JP (1) JP3095222B2 (de)
DE (1) DE3850035T2 (de)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5532694A (en) * 1989-01-13 1996-07-02 Stac Electronics, Inc. Data compression apparatus and method using matching string searching and Huffman encoding
US5146221A (en) * 1989-01-13 1992-09-08 Stac, Inc. Data compression apparatus and method
US5396587A (en) * 1990-04-11 1995-03-07 501 Lotus Development Corp. Asynchronous, minimal update display system
US5410671A (en) * 1990-05-01 1995-04-25 Cyrix Corporation Data compression/decompression processor
US5023610A (en) * 1990-06-13 1991-06-11 Cordell Manufacturing, Inc. Data compression method using textual substitution
US5151697A (en) * 1990-10-15 1992-09-29 Board Of Regents Of The University Of Washington Data structure management tagging system
US5423010A (en) * 1992-01-24 1995-06-06 C-Cube Microsystems Structure and method for packing and unpacking a stream of N-bit data to and from a stream of N-bit data words
US5229768A (en) * 1992-01-29 1993-07-20 Traveling Software, Inc. Adaptive data compression system
JP3522331B2 (ja) * 1994-04-22 2004-04-26 株式会社セタ データ圧縮方法
CN1157653C (zh) * 1994-04-22 2004-07-14 索尼公司 数据传输和接收装置及方法和数据记录和再现装置及方法
US6356961B1 (en) * 1994-06-03 2002-03-12 Motorola, Inc. Method and apparatus for minimizing an amount of data communicated between devices and necessary to modify stored electronic documents
US5627533A (en) * 1994-08-05 1997-05-06 Hayes Microcomputer Products, Inc. Adjusting encoding table size and memory allocation for data compression in response to input data
US5686912A (en) * 1995-05-08 1997-11-11 Hewlett-Packard Company Data compression method and apparatus with optimized transitions between compressed and uncompressed modes
US5832490A (en) * 1996-05-31 1998-11-03 Siemens Medical Systems, Inc. Lossless data compression technique that also facilitates signal analysis
US5946354A (en) * 1996-10-18 1999-08-31 International Business Machines Corporation Hard disk drive read channel with half speed timing
JP3540109B2 (ja) * 1996-12-24 2004-07-07 富士通株式会社 データ圧縮方法及び装置
US6624761B2 (en) 1998-12-11 2003-09-23 Realtime Data, Llc Content independent data compression method and system
US6604158B1 (en) 1999-03-11 2003-08-05 Realtime Data, Llc System and methods for accelerated data storage and retrieval
US6601104B1 (en) 1999-03-11 2003-07-29 Realtime Data Llc System and methods for accelerated data storage and retrieval
JP4776050B2 (ja) 1999-07-13 2011-09-21 ソニー株式会社 配信コンテンツ生成方法、コンテンツ配信方法および装置、並びに、コード変換方法
US6271775B1 (en) * 1999-08-24 2001-08-07 International Business Machines Corporation Method for reducing data expansion during data compression
US6281816B1 (en) * 1999-08-24 2001-08-28 International Business Machines Corporation Method and apparatus for reducing data expansion during data compression
US7181608B2 (en) 2000-02-03 2007-02-20 Realtime Data Llc Systems and methods for accelerated loading of operating systems and application programs
US20030191876A1 (en) 2000-02-03 2003-10-09 Fallon James J. Data storewidth accelerator
US7417568B2 (en) 2000-10-03 2008-08-26 Realtime Data Llc System and method for data feed acceleration and encryption
US9143546B2 (en) 2000-10-03 2015-09-22 Realtime Data Llc System and method for data feed acceleration and encryption
US8692695B2 (en) 2000-10-03 2014-04-08 Realtime Data, Llc Methods for encoding and decoding data
US7386046B2 (en) 2001-02-13 2008-06-10 Realtime Data Llc Bandwidth sensitive data compression and decompression
US8626726B2 (en) 2006-05-31 2014-01-07 International Business Machines Corporation Method and system for transformation of logical data objects for storage
US8769311B2 (en) 2006-05-31 2014-07-01 International Business Machines Corporation Systems and methods for transformation of logical data objects for storage
KR101810676B1 (ko) 2016-08-11 2017-12-19 이용원 전자파를 이용한 말벌 퇴치기

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3394352A (en) * 1965-07-22 1968-07-23 Electronic Image Systems Corp Method of and apparatus for code communication
US4145686A (en) * 1977-06-27 1979-03-20 Recognition Equipment Incorporated Data compressor
US4486784A (en) * 1982-12-27 1984-12-04 International Business Machines Corporation Image compression systems
JPS59228419A (ja) * 1983-06-09 1984-12-21 Alps Electric Co Ltd 情報圧縮処理方式
US4654877A (en) * 1984-08-28 1987-03-31 Elscint Ltd. Data compression system
US4772955A (en) * 1985-01-31 1988-09-20 Canon Kabushiki Kaisha Data communication apparatus
US4719514A (en) * 1985-03-01 1988-01-12 Canon Kabushiki Kaisha Method and apparatus for image transmission
US4646061A (en) * 1985-03-13 1987-02-24 Racal Data Communications Inc. Data communication with modified Huffman coding

Also Published As

Publication number Publication date
JPH01131935A (ja) 1989-05-24
EP0313191A3 (en) 1990-07-11
US4870415A (en) 1989-09-26
DE3850035D1 (de) 1994-07-14
EP0313191A2 (de) 1989-04-26
JP3095222B2 (ja) 2000-10-03
EP0313191B1 (de) 1994-06-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD CO. (N.D.GES.D.STAATES DELAWARE),

8327 Change in the person/name/address of the patent owner

Owner name: HEWLETT-PACKARD DEVELOPMENT CO., L.P., HOUSTON, TE