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	LZ77 and LZ78 (algorithms) - Wikipedia, the free encyclopedia
		LZ77 and LZ78 are the names for the two lossless data compression algorithms published in papers by Abraham Lempel and Jacob Ziv in 1977 and 1978.
		Abraham Lempel, Jacob Ziv; A Universal Algorithm for Sequential Data Compression, IEEE Transactions on Information Theory, May 1977.
		Abraham Lempel, Jacob Ziv; Compression of Individual Sequences Via Variable-Rate Coding, IEEE Transactions on Information Theory, September 1978.
	en.wikipedia.org /wiki/LZ77 (1042 words)

	Encyclopedia: Abraham Lempel (Site not responding. Last check: 2007-10-08)
		Abraham Lempel is a computer scientist and one of the fathers of the LZ family of lossless data compression algorithms.
		The following algorithms point with their letter L towards Lempel: The following timeline outlines the development of algorithms since their inception.
		Jacob Ziv, along with Abraham Lempel, developed the lossless LZW compression algorithm.
	www.nationmaster.com /encyclopedia/Abraham-Lempel (539 words)

	LZW - Wikipedia, the free encyclopedia
		It was developed by Terry Welch in 1984 as an improved version of the LZ78 dictionary coding algorithm developed by Abraham Lempel and Jacob Ziv.
		LZ78 was covered by U.S. Patent 4,464,650 by Lempel, Ziv, Cohn, and Eastman, assigned to Sperry Corporation, later Unisys Corporation, filed on August 10, 1981, and presumably now expired.
		Although the LZW acronym obviously refers to the inventors as Lempel, Ziv and Welch, some people claim the intellectual property rights go to Ziv first, so the method must be called the Ziv-Lempel-Welch algorithm, and not the Lempel-Ziv-Welch algorithm.
	en.wikipedia.org /wiki/LZW (883 words)

	LZW - the free encyclopedia (Site not responding. Last check: 2007-10-08)
		The algorithm isderived from the LZ77algorithm presented by Abraham Lempel and Jacob Ziv in a paper entitled "A UniversalAlgorithm for Sequential Data Compression" in the IEEETransactions on Information Theory, May 1977.
		LZ78 was covered by U.S. Patent 4,464,650by Lempel, Ziv, Cohn, and Eastman, assigned to SperryCorporation, later Unisys Corporation, filed on August 10, 1981, and presumably now expired.
		TwoUS patents were issued for the LZW algorithm: U.S. Patent 4,814,746by Victor S. Miller and Mark N. Wegman and assigned to IBM, originally filed onJune 1, 1983, and U.S. Patent 4,558,302by Welch, assigned to Sperry Corporation, later Unisys Corporation,filed on June 20,1983.
	www.encyclopedia-of-knowledge.com /?t=LZW (782 words)

	LZW -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-08)
		The algorithm is derived from the (Click link for more info and facts about LZ77) LZ77 algorithm presented by Abraham Lempel and Jacob Ziv in a paper entitled "A Universal Algorithm for Sequential Data Compression" in the IEEE Transactions on Information Theory, May 1977.
		LZ78 was covered by by Lempel, Ziv, Cohn, and Eastman, assigned to (Click link for more info and facts about Sperry Corporation) Sperry Corporation, later (Click link for more info and facts about Unisys Corporation) Unisys Corporation, filed on August 10, 1981, and presumably now expired.
		Although the LZW (A word formed from the initial letters of a multi-word name) acronym obviously refers to the inventors as Lempel, Ziv and Welch, some people claim the intellectual property rights go to Ziv first, so the method must be called the Ziv-Lempel-Welch algorithm, and not the Lempel-Ziv-Welch algorithm.
	www.absoluteastronomy.com /encyclopedia/l/lz/lzw2.htm (1023 words)

	HP Labs : About HP Labs : HP Fellows : Abraham Lempel
		The next time you send a "zipped" file over the Internet, give a nod of appreciation to Abraham Lempel, one of the creators of the algorithm that allows data to be compressed and transmitted over the Net efficiently and without dropping one bit along the way.
		Abraham Lempel, director of HP Labs Israel, and Jacob Ziv, both professors at the Israel Institute of Technology at the time, invented the Lempel-Ziv algorithm back in computing's infancy in the late 1970s.
		Lempel laughs at how he and Ziv never considered the potential remunerative aspects of their invention.
	www.hpl.hp.com /about/honors/HPfellows/lempel.html (309 words)

	Class notes CS251B -- Winter 1997
		In order to obtain the necessary frequencies of symbols in the data to be compressed, these methods either had to rely on the ability to predict such occurrences or would require that the text be read in beforehand.
		In 1977, two Israeli information theorists, Abraham Lempel and Jacob Ziv, introduced a radically different way of compressing data - one which would avoid the uncertainty of making predictions or the wastefulness of pre-reading data.
		Lempel and Ziv's compression techniques of '77 and '78 gave rise to a series of variants which form part of the LZ family.
	www.cs.mcgill.ca /~cs251/OldCourses/1997/topic23 (1472 words)

	The LZW compression algorithm (Site not responding. Last check: 2007-10-08)
		LZW is named after Abraham Lempel, Jakob Ziv and Terry Welch, the scientists who developed this compression algorithm.
		Lempel and Ziv published a series of papers describing various compression algorithms.
		In 1978, Lempel and Ziv published a second paper outlining a similar algorithm that is now referred to as LZ78.
	www.prepressure.com /techno/compressionlzw.htm (546 words)

	HP Labs : Executive bios: Abraham Lempel
		Abraham Lempel is a Senior HP Fellow, director of the Advanced Studies Program at HP Labs and director of HP Labs Israel.
		Widely known for his pioneering work in data compression, Lempel is co-inventor of the Lempel-Ziv (LZ) data-compression algorithm, a universal noiseless source-coding technique.
		Lempel's association with HP Labs began in 1984 when he visited the Palo Alto headquarters during a sabbatical.
	www.hpl.hp.com /about/bios/abraham_lempel.html (266 words)

	DBLP: Abraham Lempel
		Marcelo J. Weinberger, Abraham Lempel, Jacob Ziv: A sequential algorithm for the universal coding of finite memory sources.
		Abraham Lempel, Jacob Ziv: Compression of two-dimensional data.
		Jacob Ziv, Abraham Lempel: A Universal Algorithm for Sequential Data Compression.
	informatik.uni-trier.de /~ley/db/indices/a-tree/l/Lempel:Abraham.html (697 words)

	Lempel-Ziv-Welch (LZW) Compression
		This lossless method of data compression is found in several image file formats, such as GIF and TIFF, and is also part of the V.42bis modem compression standard and PostScript Level 2.
		In 1977, Abraham Lempel and Jakob Ziv created the first of what we now call the LZ family of substitutional compressors.
		In 1977, Abraham Lempel and Jakob Ziv published a paper on a universal algorithm for data compression.
	www.fileformat.info /mirror/egff/ch09_04.htm (3391 words)

	Lempel-Ziv-Welch (LZW)
		The LZW compression method is derived from LZ78 as introduced by Jacob Ziv and Abraham Lempel.
		It was invented by Terry A. Welch in 1984 who had published his considerations in the article "A Technique for High-Performance Data Compression".
		The algorithm presented by Terry Welch defines mechanisms to create the dictionary and to ensure that it will be identical for both the encoding and decoding process.
	www.binaryessence.com /dct/en000141.htm (182 words)

	DB&LP: Abraham Lempel (Site not responding. Last check: 2007-10-08)
		Shimon Even, Abraham Lempel: Generation and Enumeration of All Solutions of the Characteristic Sum Condition.
		Abraham Lempel, Gadiel Seroussi, Shmuel Winograd: On the Complexity of Multiplication in Finite Fields.
		Dafna Sheinwald, Abraham Lempel, Jacob Ziv: On Encoding and Decoding with Two-Way Head Machines.
	researchsmp2.cc.vt.edu /DB/db/indices/a-tree/l/Lempel:Abraham.html (100 words)

	ipedia.com: LZW compression algorithm Article (Site not responding. Last check: 2007-10-08)
		The algorithm is derived from the LZ77 algorithm presented by Abraham Lempel and Jacob Ziv in a paper entitled "A Universal Algorithm for Sequential Data...
		The algorithm is derived from the LZ77 algorithm presented by Abraham Lempel and Jacob Ziv in a paper entitled "A Universal Algorithm for Sequential Data Compression" in the IEEE Transactions on Information Theory, May 1977.
		Two US patents were issued for the LZW algorithm: 4,814,746 by Victor S. Miller and Mark N. Wegman and assigned to IBM, originally filed on June 1, 1983, and 4,558,302 by Welch, assigned to Sperry Corporation, later Unisys Corporation, filed on June 20, 1983.
	www.ipedia.com /lzw_compression_algorithm.html (883 words)

	Digital Revolution (II) - Compression Codes and Technologies (Site not responding. Last check: 2007-10-08)
		Using other remarkably simple ideas Jakob Ziv, Abraham Lempel and Terry Welch developed other very valuable compression schemes.
		One of these was modified by Terry Welch into a widely used standard for compression, now known as LZW (Lempel, Ziv and Welch).
		In fact, the two papers of Ziv and Lempel spawned a whole family of compression schemes that are incorporated in a great variety of applications ranging from modems and archivers to databases.
	80-www.ams.org.library.uor.edu /featurecolumn/archive/compression6.html (617 words)

	Citations: Abraham Lempel: A Randomized Protocol for Signing Contracts; Communications of the ACM - Even, Goldreich ... (Site not responding. Last check: 2007-10-08)
		Shimon Even, Oded Goldreich, Abraham Lempel: A Randomized Protocol for Signing Contracts; Communications of the ACM 28/6 (1985) 637--647.
		If one signatory stops prematurely, both signatories have about the same fraction of the peer s signature, which means they can complete the contract offline by investing about the same amount of....
		Shimon Even, Oded Goldreich, Abraham Lempel: A Randomized Protocol for Signing Contracts; Communications of the ACM 28/6 (1985) 637-647.
	citeseer.ist.psu.edu /context/249038/0 (813 words)

	Mathematical Formula Recognized as Crucial Milestone in Development of Internet
		The Lempel-Ziv Data Compression Algorithm — a mathematical formula developed by the duo in 1977 -- became the basis for maximizing compression and transmission of information between computers.
		He is also a laureate of his country's most significant award -- the Israel Prize, as well as the IEEE Richard W. Hamming Medal.
		Abraham Lempel is a past recipient of the Golden Jubilee Award for Technological Innovation from the IEEE Information Theory Society.
	www.ats.org /news.php?id=96 (296 words)

	[Commons-Law] Sad day... GIF patent dead at 20 (Site not responding. Last check: 2007-10-08)
		Jean-Loup Gailly's opinion on compression patents given in interview References: [LZ77] Abraham Lempel, Jacob Ziv; A Universal Algorithm for Sequential Data Compression, IEEE Transactions on Information Theory May 1977.
		[LZ78] Abraham Lempel, Jacob Ziv; Compression of Individual Sequences Via Variable-Rate Coding, IEEE Transactions on Information Theory September 1978.
		[US4,464,650] Willard Eastman, Abraham Lempel, Jacob Ziv, Martin Cohn; Apparatus and Method for Compressing Data Signals and Restoring the Compressed Data Signals, US patent 4,464,650 filed August 10, 1981 -- Sunil Abraham, sunil at mahiti.org http://www.mahiti.org MAHITI Infotech Pvt.
	mail.sarai.net /pipermail/commons-law/2003-June/001337.html (934 words)

	A Universal Algorithm for Sequential Data Compression - Ziv, Lempel (ResearchIndex) (Site not responding. Last check: 2007-10-08)
		A Universal Algorithm for Sequential Data Compression - Ziv, Lempel (ResearchIndex)
		Ziv J., Lempel A., "A Universal Algorithm for Sequential Data Compression", IEEE Transactions on Information Theory, Vol.
		49 the complexity of finite sequences (context) - Lempel, Ziv - 1976
	citeseer.ist.psu.edu /ziv77universal.html (401 words)

	DUMP/DAT Enhancements [ COMMUNICATOR 3000 MPE MPE/iX RELEASE 4.0 ] (Site not responding. Last check: 2007-10-08)
		Beginning with this MPE/iX release, DUMP and DAT use a variation of the LZ data compression algorithm.
		LZ stands for the originators of this compression technique, Abraham Lempel and Jacob Ziv.
		This family is called Ziv-Lempel coding, abbreviated and transposed as LZ coding.
	docs.hp.com /cgi-bin/doc3k/B3021690104.11968/18 (313 words)

	LZW Compression: A Short Summary
		The essential principle is that each unique data string of characters is stored once in a "dictionary", after which all re-iterations are simply denoted by a code, thus eliminating repetitions and reducing size effectively.
		Lempel-Ziv Welch (LZW) first began its existence in 1977, with the publication of the theorems and algorithms of Jacob Ziv and Abraham Lempel, as Lempel-Ziv compression.
		It did not fully become LZW until 1984, when Terry A. Welch, then working for Unisys published the algorithm in "A Technique for High-Performance Data Compression" in IEEE Computer.
	www.cs.mcgill.ca /~jkelih/works/cs251.html (1151 words)

	Linux man pages : compress ()
		The compress utility shall attempt to reduce the size of the named files by using adaptive Lempel-Ziv coding algorithm.
		Note: Lempel-Ziv is US Patent 4464650, issued to William Eastman, Abraham Lempel, Jacob Ziv, Martin Cohn on August 7th, 1984, and assigned to Sperry Corporation.
		Lempel-Ziv-Welch compression is covered by US Patent 4558302, issued to Terry A. Welch on December 10th, 1985, and assigned to Sperry Cor- poration.
	www.cit.gu.edu.au /teaching/2105CIT/cgi-bin/man.cgi?compress (888 words)

	Information and Computation Bibliography (Site not responding. Last check: 2007-10-08)
		On encoding and decoding with two-way head machines.
		Ziv and Lempel (1978) investigated the encoding power of finite state machines with respect to given individual sequences.
		Motivated by the study of various kinds of machines as recognizers of formal languages (cf.
	theory.lcs.mit.edu /~iandc/References/sheinwaldlz1995:128.html (114 words)

	Lz77 by Arturo San Emeterio Campos
		In 1977 Abraham Lempel and Jacob Ziv presented their dictionary based scheme for text compression.
		In 1982 James Storer and Thomas Szymanski basing on the work of Lempel and Ziv, presented their scheme, Lzss.
		And that's what we actually use, but lzss it's commonly called lz77, so we'll call it lz77 from this point at on, but remember that it can also be named Lzss.
	www.arturocampos.com /ac_lz77.html (4613 words)

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