Ross Williams

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Ross Williams
Ross Neil Williams.jpg
Born (1962-10-15) October 15, 1962 (age 60)[1]

Ross Neil Williams is an Australian computer scientist and entrepreneur who has made significant contributions to data compression and data deduplication technologies. He is best known as the inventor of the U.S. Patent 5,990,810 and the founder of Rocksoft Pty Ltd.

Ross Williams gained his PhD in data compression from the University of Adelaide in 1991 and his thesis was subsequently published as Adaptive Data Compression.[2] Williams conducted research into Lempel–Ziv lossless compression techniques during which he developed the SAKDC algorithm, the LZRW range of algorithms, and created the newsgroups comp.compression and comp.compression.research.

In 1996 Williams submitted a patent, U.S. Patent 5,990,810, for a variable-length data partitioning system that has since become the basis for data deduplication technology in the computer data storage industry.

In 2001, Williams founded the data integrity and data storage company Rocksoft Pty Ltd. With Williams as chairman and chief architect, Rocksoft developed the deduplication technology to a commercial product. In 2006, Rocksoft was sold to ADIC[3] which was in turn immediately acquired by Quantum Corporation.[4]

In 2007, Williams' patent became the subject of legal action between Quantum Corporation and Riverbed Technology.[5]

Since exiting Rocksoft, Williams founded, along with associate David Sag, Carbon Planet Pty Ltd, a carbon credits auditing, origination, and retailing company.


  1. ^ "Williams, Ross N. (Ross Neil), 1962-". LC Name Authority File (LCNAF). LC Linked Data Service. Library of Congress. Retrieved 21 May 2020.
  2. ^ Williams, Ross N. (1991). Adaptive Data Compression. Springer. ISBN 9780792390855.
  3. ^ "ADIC Acquires Data De-Deplication Vendor". Network World. 15 March 2006. Archived from the original on 10 June 2008. Retrieved 19 September 2008.
  4. ^ "Rocksoft Now Part of Quantum". Quantum Corporation. Retrieved 19 September 2008.
  5. ^ "Quantum Sues Riverbed". Byte and Switch. 9 October 2007. Retrieved 19 September 2008.

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