Title:
DATA COMPRESSION METHOD AND DATA COMPRESSION SYSTEM
Document Type and Number:
Japanese Patent JP2000068857
Kind Code:
A
Abstract:
To provide the data compression system adopting the LZW coding system where coding processing is conducted at a high speed by reducing coding processing quantity by all compressed data and all expert dictionaries having been made by a conventional method.
In the data compression system adopting the LZW coding system, a learning dictionary 12-1 and one expert dictionary or over 12-2-12-4 are provided, part of coded compressed data is learned and compressed by using all the dictionaries, the expert dictionaries of a closest field are selected and fixed based on compressed data contents and the remaining compressed data are compressed by using the selected and fixed expert dictionaries.
Inventors:
YAMANAKA HISAYUKI
Application Number:
JP23552098A
Publication Date:
March 03, 2000
Filing Date:
August 21, 1998
Export Citation:
Assignee:
NIPPON ELECTRIC IC MICROCOMPUT
International Classes:
G06F5/00; H03M7/40; (IPC1-7): H03M7/40; G06F5/00
Attorney, Agent or Firm:
Kiyoshi Inagaki