公开(公告)号：US5640158A

公开(公告)日：1997-06-17

申请号：US527904

申请日：1995-09-14

申请人： Toshiaki Okayama ,  Noboru Kitazawa

发明人： Toshiaki Okayama ,  Noboru Kitazawa

IPC分类号： G06F5/00 ,  G06T9/00 ,  H03M7/30 ,  H03M7/46 ,  H03M7/38

CPC分类号： G06T9/005 ,  H03M7/3086

摘要： A method of reversible data compression is disclosed. The method is an improvement on the Lempel-Ziv data compression method that does not require a prefix for every noncompressed data unit in the encoded data stream. A code is inserted at the beginning of each string of consecutive noncompressed data bytes to indicate that the string is of noncompressed data and the number of bytes in the string. By eliminating the requirement for a separate prefix for each noncompressed data, a higher compression ratio is achieved over conventional Lempel-Ziv encoding methods.

摘要翻译： 公开了一种可逆数据压缩的方法。 该方法是对编码数据流中的每个非压缩数据单元不需要前缀的Lempel-Ziv数据压缩方法的改进。 在每个连续的非压缩数据字节串的开始处插入一个代码，以指示该字符串是非压缩数据和字符串中的字节数。 通过消除对每个非压缩数据的单独前缀的要求，通过传统的Lempel-Ziv编码方法实现了更高的压缩比。