发明授权
US4866440A Method for compressing and restoring data series and apparatus for
realizing same
失效
用于压缩和恢复数据系列的方法及其实现方法
- 专利标题： Method for compressing and restoring data series and apparatus for realizing same
- 专利标题（中）： 用于压缩和恢复数据系列的方法及其实现方法
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申请号： US129185申请日： 1987-12-07
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公开(公告)号： US4866440A公开(公告)日： 1989-09-12
- 发明人: Tokuhiro Tsukiyama , Yasunori Sagara , Kazumi Miyazawa
- 申请人： Tokuhiro Tsukiyama , Yasunori Sagara , Kazumi Miyazawa
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-294821 19861212
- 主分类号： G06F5/00
- IPC分类号： G06F5/00 ; G06T9/00 ; G11B20/10 ; H03M7/30 ; H03M7/46 ; H04L23/00
摘要：
A data compression and restoration method and an apparatus for realizing same, by which, when identical data patterns appear successively in data information, which may be recorded in a magnetic tape, etc., the data patterns are subjected to a compression operation, the data thus compressed is recorded, and it is restored at the reproduction. When the data patterns appear successively, they are compressed, and the data patterns generated by the compression are subjected to a second compression, after they have been rearranged for the purpose of the second compression. In this way it is possible to record data significantly compressed.
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