DE3887627T2 - Effizienzabhängige Rücksetzung eines Datenkomprimierungswörterbuches. - Google Patents
Effizienzabhängige Rücksetzung eines Datenkomprimierungswörterbuches.Info
- Publication number
- DE3887627T2 DE3887627T2 DE3887627T DE3887627T DE3887627T2 DE 3887627 T2 DE3887627 T2 DE 3887627T2 DE 3887627 T DE3887627 T DE 3887627T DE 3887627 T DE3887627 T DE 3887627T DE 3887627 T2 DE3887627 T2 DE 3887627T2
- Authority
- DE
- Germany
- Prior art keywords
- efficiency
- data compression
- compression dictionary
- dependent reset
- reset
- 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
- 238000013144 data compression Methods 0.000 title 1
- 230000001419 dependent effect Effects 0.000 title 1
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
- 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
- H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/109,970 US4847619A (en) | 1987-10-19 | 1987-10-19 | Performance-based reset of data compression dictionary |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3887627D1 DE3887627D1 (de) | 1994-03-17 |
DE3887627T2 true DE3887627T2 (de) | 1994-08-18 |
Family
ID=22330571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3887627T Expired - Fee Related DE3887627T2 (de) | 1987-10-19 | 1988-08-03 | Effizienzabhängige Rücksetzung eines Datenkomprimierungswörterbuches. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4847619A (de) |
EP (1) | EP0313190B1 (de) |
JP (1) | JP2785913B2 (de) |
DE (1) | DE3887627T2 (de) |
Families Citing this family (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4899148A (en) * | 1987-02-25 | 1990-02-06 | Oki Electric Industry Co., Ltd. | Data compression method |
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 |
US4929946A (en) * | 1989-02-09 | 1990-05-29 | Storage Technology Corporation | Adaptive data compression apparatus including run length encoding for a tape drive system |
US5124791A (en) * | 1989-05-31 | 1992-06-23 | Utah State University Foundation | Frame-to-frame compression of vector quantized signals and other post-processing |
US5010345A (en) | 1989-12-28 | 1991-04-23 | International Business Machines Corporation | Data compression method |
US5010344A (en) * | 1989-12-28 | 1991-04-23 | International Business Machines Corporation | Method of decoding compressed data |
US5001478A (en) | 1989-12-28 | 1991-03-19 | International Business Machines Corporation | Method of encoding compressed data |
US5184126A (en) | 1989-12-28 | 1993-02-02 | International Business Machines Corporation | Method of decompressing compressed data |
EP0464191B1 (de) * | 1990-01-19 | 1996-03-27 | Hewlett-Packard Limited | Zugriff für komprimierte daten |
US5410671A (en) * | 1990-05-01 | 1995-04-25 | Cyrix Corporation | Data compression/decompression processor |
EP0688104A2 (de) * | 1990-08-13 | 1995-12-20 | Fujitsu Limited | Verfahren und Vorrichtung zur Datenkomprimierung |
JPH0495878A (ja) * | 1990-08-14 | 1992-03-27 | Sony Corp | ピーク値検出回路 |
US5151697A (en) * | 1990-10-15 | 1992-09-29 | Board Of Regents Of The University Of Washington | Data structure management tagging system |
US5142282A (en) * | 1990-11-07 | 1992-08-25 | Hewlett-Packard Company | Data compression dictionary access minimization |
GB2251097B (en) * | 1990-12-08 | 1995-05-10 | Dowty Information Systems | An adaptive data compression system |
US5490260A (en) * | 1990-12-14 | 1996-02-06 | Ceram, Inc. | Solid-state RAM data storage for virtual memory computer using fixed-sized swap pages with selective compressed/uncompressed data store according to each data size |
US5237460A (en) * | 1990-12-14 | 1993-08-17 | Ceram, Inc. | Storage of compressed data on random access storage devices |
CA2065578C (en) * | 1991-04-22 | 1999-02-23 | David W. Carr | Packet-based data compression method |
US5245614A (en) * | 1991-04-29 | 1993-09-14 | Codex Corporation | Vocabulary memory allocation for adaptive data compression of frame-multiplexed traffic |
US5159336A (en) * | 1991-08-13 | 1992-10-27 | Iomega Corporation | Tape controller with data compression and error correction sharing a common buffer |
US5175543A (en) * | 1991-09-25 | 1992-12-29 | Hewlett-Packard Company | Dictionary reset performance enhancement for data compression applications |
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 |
US5243341A (en) * | 1992-06-01 | 1993-09-07 | Hewlett Packard Company | Lempel-Ziv compression scheme with enhanced adapation |
US5229768A (en) * | 1992-01-29 | 1993-07-20 | Traveling Software, Inc. | Adaptive data compression system |
US5379036A (en) * | 1992-04-01 | 1995-01-03 | Storer; James A. | Method and apparatus for data compression |
US5485526A (en) * | 1992-06-02 | 1996-01-16 | Hewlett-Packard Corporation | Memory circuit for lossless data compression/decompression dictionary storage |
US5537551A (en) * | 1992-11-18 | 1996-07-16 | Denenberg; Jeffrey N. | Data compression method for use in a computerized informational and transactional network |
US5424732A (en) * | 1992-12-04 | 1995-06-13 | International Business Machines Corporation | Transmission compatibility using custom compression method and hardware |
US5323155A (en) * | 1992-12-04 | 1994-06-21 | International Business Machines Corporation | Semi-static data compression/expansion method |
JP3522331B2 (ja) * | 1994-04-22 | 2004-04-26 | 株式会社セタ | データ圧縮方法 |
US5486826A (en) * | 1994-05-19 | 1996-01-23 | Ps Venture 1 Llc | Method and apparatus for iterative compression of digital data |
JPH088842A (ja) * | 1994-06-15 | 1996-01-12 | Philips Electron Nv | データ圧縮伝送システム |
US5561421A (en) * | 1994-07-28 | 1996-10-01 | International Business Machines Corporation | Access method data compression with system-built generic dictionaries |
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 |
US5758257A (en) | 1994-11-29 | 1998-05-26 | Herz; Frederick | System and method for scheduling broadcast of and access to video programs and other data using customer profiles |
US6460036B1 (en) * | 1994-11-29 | 2002-10-01 | Pinpoint Incorporated | System and method for providing customized electronic newspapers and target advertisements |
US5686912A (en) * | 1995-05-08 | 1997-11-11 | Hewlett-Packard Company | Data compression method and apparatus with optimized transitions between compressed and uncompressed modes |
US6069573A (en) * | 1996-06-17 | 2000-05-30 | Hewlett-Packard Company | Match and match address signal prioritization in a content addressable memory encoder |
US5828324A (en) * | 1996-06-17 | 1998-10-27 | Hewlett-Packard Company | Match and match address signal generation in a content addressable memory encoder |
US5978885A (en) * | 1996-06-17 | 1999-11-02 | Hewlett Packard Co. | Method and apparatus for self-timing associative data memory |
US5654703A (en) * | 1996-06-17 | 1997-08-05 | Hewlett-Packard Company | Parallel data compression and decompression |
US5771011A (en) * | 1996-07-15 | 1998-06-23 | International Business Machines Corporation | Match detect logic for multi-byte per cycle hardware data compression |
US5951623A (en) * | 1996-08-06 | 1999-09-14 | Reynar; Jeffrey C. | Lempel- Ziv data compression technique utilizing a dictionary pre-filled with frequent letter combinations, words and/or phrases |
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 |
US7898442B1 (en) * | 1997-05-30 | 2011-03-01 | International Business Machines Corporation | On-line data compression analysis and regulation |
JP3337633B2 (ja) | 1997-12-03 | 2002-10-21 | 富士通株式会社 | データ圧縮方法及びデータ復元方法並びにデータ圧縮プログラム又はデータ復元プログラムを記録したコンピュータ読み取り可能な記録媒体 |
US7630986B1 (en) * | 1999-10-27 | 2009-12-08 | Pinpoint, Incorporated | Secure data interchange |
US6883087B1 (en) | 2000-12-15 | 2005-04-19 | Palm, Inc. | Processing of binary data for compression |
DE10117194B4 (de) * | 2001-04-05 | 2013-09-19 | Anton Rodi | Winkel- oder Wegmessgeber |
US6650261B2 (en) * | 2001-09-06 | 2003-11-18 | Xerox Corporation | Sliding window compression method utilizing defined match locations |
US9576570B2 (en) * | 2010-07-30 | 2017-02-21 | Sri International | Method and apparatus for adding new vocabulary to interactive translation and dialogue systems |
US9455864B2 (en) * | 2012-06-25 | 2016-09-27 | Radware, Ltd. | System and method for creation, distribution, application, and management of shared compression dictionaries for use in symmetric HTTP networks |
US8612402B1 (en) * | 2012-10-26 | 2013-12-17 | Stec, Inc. | Systems and methods for managing key-value stores |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1249924B (de) * | 1962-07-17 | |||
US3394352A (en) * | 1965-07-22 | 1968-07-23 | Electronic Image Systems Corp | Method of and apparatus for code communication |
US3906485A (en) * | 1973-06-13 | 1975-09-16 | Ibm | Data coding circuits for encoded waveform with constrained charge accumulation |
JPS5619506A (en) * | 1979-07-23 | 1981-02-24 | Sony Corp | Code converting method |
US4386416A (en) * | 1980-06-02 | 1983-05-31 | Mostek Corporation | Data compression, encryption, and in-line transmission system |
US4464650A (en) * | 1981-08-10 | 1984-08-07 | Sperry Corporation | Apparatus and method for compressing data signals and restoring the compressed data signals |
US4558302A (en) * | 1983-06-20 | 1985-12-10 | Sperry Corporation | High speed data compression and decompression apparatus and method |
JPH0828053B2 (ja) * | 1983-08-08 | 1996-03-21 | 株式会社日立製作所 | データ記録方法 |
US4609907A (en) * | 1984-10-31 | 1986-09-02 | International Business Machines Corporation | Dual channel partial response system |
US4646061A (en) * | 1985-03-13 | 1987-02-24 | Racal Data Communications Inc. | Data communication with modified Huffman coding |
US4626829A (en) * | 1985-08-19 | 1986-12-02 | Intelligent Storage Inc. | Data compression using run length encoding and statistical encoding |
-
1987
- 1987-10-19 US US07/109,970 patent/US4847619A/en not_active Expired - Lifetime
-
1988
- 1988-08-03 DE DE3887627T patent/DE3887627T2/de not_active Expired - Fee Related
- 1988-08-03 EP EP88307152A patent/EP0313190B1/de not_active Expired - Lifetime
- 1988-10-19 JP JP63263801A patent/JP2785913B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH01132222A (ja) | 1989-05-24 |
DE3887627D1 (de) | 1994-03-17 |
EP0313190A3 (en) | 1990-07-04 |
US4847619A (en) | 1989-07-11 |
EP0313190A2 (de) | 1989-04-26 |
JP2785913B2 (ja) | 1998-08-13 |
EP0313190B1 (de) | 1994-02-02 |
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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 |
|
8339 | Ceased/non-payment of the annual fee |