发明名称 |
Apparatus and method for managing multiple dictionaries in content addressable based data compression. |
摘要 |
<p>A class of lossless data compression algorithms use a memory-based dictionary of finite size to facilitate the compression and decompression of data. To reduce the loss in data compression caused by dictionary resets, a standby dictionary is used to store a subset of encoded data entries previously stored in a current dictionary. In a second aspect data is compressed/decompressed according to the address location of data entries contained within a dictionary built in a content addressable memory (CAM). In a third aspect the minimum memory/high compression capacity of the standby dictionary scheme is combined with the fast single-cycle per character encoding/decoding capacity of the CAM circuit. The circuit uses multiple dictionaries within the storage locations of a CAM to reduce the amount of memory required to provide a high data compression ratio. <IMAGE></p> |
申请公布号 |
EP0573208(A1) |
申请公布日期 |
1993.12.08 |
申请号 |
EP19930304094 |
申请日期 |
1993.05.26 |
申请人 |
HEWLETT-PACKARD COMPANY |
发明人 |
LEMPEL, ABRAHAM;SEROUSSI, GADIEL;TOBIN, JEFFREY P.;LANTZ, CARL B. |
分类号 |
G06T9/00;H03M7/30;(IPC1-7):H03M7/30 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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