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Data compression and decompression methods, data compression device, and data decompression device 実績あり

Foreign code F210010557
Posted date 2021年10月18日
Country 世界知的所有権機関(WIPO)
International application number 2020JP018146
International publication number WO2020226105
Date of international filing 令和2年4月28日(2020.4.28)
Date of international publication 令和2年11月12日(2020.11.12)
Title Data compression and decompression methods, data compression device, and data decompression device 実績あり
Abstract A compression device performs: a process in which, if a symbol that has been input is not registered in a first table having a plurality of entries, the symbol is registered in a predetermined entry among the plurality of entries, and indicator data indicating non-compression and the symbol are output; a process in which, if the symbol is registered in the table, indicator data indicating compression and position information are output, the position information indicating the position of an entry in which the symbol is registered and having a size smaller than that of the symbol; and a process in which the size of the position information is changed in accordance with the status of use of the plurality of entries.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • UNIVERSITY OF TSUKUBA
  • Inventor
  • YAMAGIWA Shinichi
  • MARUMO Kouichi
  • HAYAKAWA Eisaku
IPC(International Patent Classification)
Reference ( R and D project ) Parallel and Distributed Computing Lab.
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