发明名称 METHOD FOR PROVIDING IMPROVED DATA COMPRESSION EFFICIENCY AND PRE-COMPRESSOR
摘要 PROBLEM TO BE SOLVED: To provide improved method and device for compressing data. SOLUTION: This method for providing improved data compression efficiency is disclosed for a data compressor. Before a non-compressed data stream is transmitted to a data compression unit, first an incoming data byte from the non-compressed data stream is compared with a preceding data byte from the non-compressed data stream. In response to the coincidence of incoming data byte and preceding data byte, a first counter value is incremented. After the first counter value reaches a preset value, in response to the following matching of incoming data byte and preceding data byte, a second counter value is incremented. When the incoming data byte is completely run, in place of that run part, the second counter value is finally transmitted to the data compression unit. Thus, after the generation of run inside the non-compressed data stream, the data compression unit can speedily restart the optimum compressibility.
申请公布号 JPH11145848(A) 申请公布日期 1999.05.28
申请号 JP19980228812 申请日期 1998.08.13
申请人 INTERNATL BUSINESS MACH CORP <IBM> 发明人 CRAFT DAVID JOHN
分类号 G06F5/00;H03M7/30;H03M7/40;H03M7/46;(IPC1-7):H03M7/40 主分类号 G06F5/00
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