DE69517852T2 - Datenkompressionsverfahren und System - Google Patents
Datenkompressionsverfahren und SystemInfo
- Publication number
- DE69517852T2 DE69517852T2 DE69517852T DE69517852T DE69517852T2 DE 69517852 T2 DE69517852 T2 DE 69517852T2 DE 69517852 T DE69517852 T DE 69517852T DE 69517852 T DE69517852 T DE 69517852T DE 69517852 T2 DE69517852 T2 DE 69517852T2
- Authority
- DE
- Germany
- Prior art keywords
- data compression
- compression method
- data
- compression
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/005—Statistical coding, e.g. Huffman, run length coding
-
- 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
- H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
- H03M7/3088—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method employing the use of a dictionary, e.g. LZ78
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10783794A JP3522331B2 (ja) | 1994-04-22 | 1994-04-22 | データ圧縮方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69517852D1 DE69517852D1 (de) | 2000-08-17 |
DE69517852T2 true DE69517852T2 (de) | 2001-01-11 |
Family
ID=14469308
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69517852T Expired - Fee Related DE69517852T2 (de) | 1994-04-22 | 1995-04-21 | Datenkompressionsverfahren und System |
Country Status (4)
Country | Link |
---|---|
US (1) | US5604495A (de) |
EP (1) | EP0678986B1 (de) |
JP (1) | JP3522331B2 (de) |
DE (1) | DE69517852T2 (de) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000201080A (ja) * | 1999-01-07 | 2000-07-18 | Fujitsu Ltd | 付加コ―ドを用いたデ―タ圧縮/復元装置および方法 |
US7197491B1 (en) | 1999-09-21 | 2007-03-27 | International Business Machines Corporation | Architecture and implementation of a dynamic RMI server configuration hierarchy to support federated search and update across heterogeneous datastores |
US6466933B1 (en) | 1999-09-21 | 2002-10-15 | International Business Machines Corporation | Delayed delivery of query results or other data from a federated server to a federated client until such information is needed |
US6370541B1 (en) | 1999-09-21 | 2002-04-09 | International Business Machines Corporation | Design and implementation of a client/server framework for federated multi-search and update across heterogeneous datastores |
US7113939B2 (en) | 1999-09-21 | 2006-09-26 | International Business Machines Corporation | Architecture to enable search gateways as part of federated search |
US6792416B2 (en) | 1999-09-21 | 2004-09-14 | International Business Machines Corporation | Managing results of federated searches across heterogeneous datastores with a federated result set cursor object |
US7162713B2 (en) * | 2000-03-14 | 2007-01-09 | Arc International | Difference engine method and apparatus |
US6552672B1 (en) * | 2002-03-18 | 2003-04-22 | Hewlett-Packard Company | Method, system and program storage device for providing a backup of data of a memory to at least one storage medium |
US7307552B2 (en) * | 2005-11-16 | 2007-12-11 | Cisco Technology, Inc. | Method and apparatus for efficient hardware based deflate |
US7283072B1 (en) * | 2006-03-30 | 2007-10-16 | International Business Machines Corporation | Methods of creating a dictionary for data compression |
US20080001790A1 (en) * | 2006-06-30 | 2008-01-03 | Kyle Kirby | Method and system for enhancing data compression |
WO2008078390A1 (ja) * | 2006-12-26 | 2008-07-03 | Fujitsu Limited | データ圧縮装置およびデータ復元装置 |
NL2001597C2 (nl) * | 2008-05-21 | 2009-11-24 | Ipo Paulus Willem Marinus Boom | Werkwijze en inrichting voor coderen en decoderen van data in unieke getalswaarden. |
US9020262B2 (en) | 2012-07-31 | 2015-04-28 | Hewlett-Packard Development Company, L.P. | Symbol compression using conditional entropy estimation |
CA2936485C (en) * | 2014-01-29 | 2020-09-01 | Relican Analytics, Inc. | Optimized data condenser and method |
JP6256883B2 (ja) * | 2015-03-25 | 2018-01-10 | 国立大学法人 筑波大学 | データ圧縮・解凍システム、データ圧縮方法及びデータ解凍方法、並びにデータ圧縮器及びデータ解凍器 |
US11122095B2 (en) * | 2019-09-23 | 2021-09-14 | Netapp, Inc. | Methods for dictionary-based compression and devices thereof |
CN115002465A (zh) * | 2022-05-30 | 2022-09-02 | 深圳市吉迩科技有限公司 | 基于嵌入式系统图片的无损压缩算法、装置、计算机设备及存储介质 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4021782A (en) * | 1974-01-07 | 1977-05-03 | Hoerning John S | Data compaction system and apparatus |
US4814746A (en) | 1983-06-01 | 1989-03-21 | International Business Machines Corporation | Data compression method |
US4558302A (en) * | 1983-06-20 | 1985-12-10 | Sperry Corporation | High speed data compression and decompression apparatus and method |
US4612532A (en) * | 1984-06-19 | 1986-09-16 | Telebyte Corportion | Data compression apparatus and method |
US4876541A (en) * | 1987-10-15 | 1989-10-24 | Data Compression Corporation | Stem for dynamically compressing and decompressing electronic data |
US4847619A (en) * | 1987-10-19 | 1989-07-11 | Hewlett-Packard Company | Performance-based reset of data compression dictionary |
US4870415A (en) * | 1987-10-19 | 1989-09-26 | Hewlett-Packard Company | Data compression system with expansion protection |
GB8815978D0 (en) * | 1988-07-05 | 1988-08-10 | British Telecomm | Method & apparatus for encoding decoding & transmitting data in compressed form |
GB8828796D0 (en) * | 1988-12-09 | 1989-01-18 | British Telecomm | Data compression |
US5016009A (en) | 1989-01-13 | 1991-05-14 | Stac, Inc. | Data compression apparatus and method |
US5003307A (en) * | 1989-01-13 | 1991-03-26 | Stac, Inc. | Data compression apparatus with shift register search means |
US5254990A (en) * | 1990-02-26 | 1993-10-19 | Fujitsu Limited | Method and apparatus for compression and decompression of data |
US5049881A (en) * | 1990-06-18 | 1991-09-17 | Intersecting Concepts, Inc. | Apparatus and method for very high data rate-compression incorporating lossless data compression and expansion utilizing a hashing technique |
EP0688104A2 (de) * | 1990-08-13 | 1995-12-20 | Fujitsu Limited | Verfahren und Vorrichtung zur Datenkomprimierung |
US5142282A (en) * | 1990-11-07 | 1992-08-25 | Hewlett-Packard Company | Data compression dictionary access minimization |
US5140321A (en) * | 1991-09-04 | 1992-08-18 | Prime Computer, Inc. | Data compression/decompression method and apparatus |
US5243341A (en) * | 1992-06-01 | 1993-09-07 | Hewlett Packard Company | Lempel-Ziv compression scheme with enhanced adapation |
US5373290A (en) * | 1991-09-25 | 1994-12-13 | Hewlett-Packard Corporation | Apparatus and method for managing multiple dictionaries in content addressable memory based data compression |
US5175543A (en) * | 1991-09-25 | 1992-12-29 | Hewlett-Packard Company | Dictionary reset performance enhancement for data compression applications |
-
1994
- 1994-04-22 JP JP10783794A patent/JP3522331B2/ja not_active Expired - Lifetime
-
1995
- 1995-04-21 DE DE69517852T patent/DE69517852T2/de not_active Expired - Fee Related
- 1995-04-21 US US08/426,620 patent/US5604495A/en not_active Expired - Fee Related
- 1995-04-21 EP EP95106020A patent/EP0678986B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH07295785A (ja) | 1995-11-10 |
EP0678986A1 (de) | 1995-10-25 |
JP3522331B2 (ja) | 2004-04-26 |
DE69517852D1 (de) | 2000-08-17 |
US5604495A (en) | 1997-02-18 |
EP0678986B1 (de) | 2000-07-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |