专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明授权

US5623262A Multi-word variable length encoding and decoding 失效
标题翻译：多字可变长度编码和解码
公开(公告)号：US5623262A
公开(公告)日：1997-04-22
申请号：US291655
申请日：1994-08-17
申请人： James O. Normile , Katherine Shu-wei Wang , Ke-Chiang Chu , Dulce B. Ponceleon , Hsi-Jung Wu
发明人： James O. Normile , Katherine Shu-wei Wang , Ke-Chiang Chu , Dulce B. Ponceleon , Hsi-Jung Wu
IPC分类号： H03M7/42 , H03M7/40
CPC分类号： H03M7/425
摘要： Decoding and encoding of variable length data words and data strings is accelerated by testing for and processing more than one word or string per encoding or decoding cycle. In an encoding scheme wherein fixed length data words are encoded into variable length data strings, decoding is carried out by first receiving a data stream having a plurality of encoded data strings contained therein, and then testing at least a portion of the data stream to determine whether the portion contains one of a number of selected sets of multiple data strings. If the portion of the data stream contains one of the selected sets of multiple data strings, the multiple data strings are decoded into a corresponding set of multiple data words. This decoding procedure allows a plurality of encoded data strings to be decoded in a single decoding cycle. The procedure may be implemented using either a single lookup table or a set of split-level lookup tables. The above procedure may also be applied to an encoding scheme wherein variable length data words are transformed into fixed length encoded data strings to encode the variable length data words. Furthermore, the above procedure may be applied to an encoding scheme wherein variable length data words are transformed into variable length data strings to both encode and decode the variable length data words and data strings.
摘要翻译：可变长度数据字和数据串的解码和编码通过对每个编码或解码周期进行测试和处理多个字或字符串来加速。在将固定长度数据字编码为可变长度数据串的编码方案中，通过首先接收其中包含多个编码数据串的数据流，然后测试数据流的至少一部分来确定该部分是否包含多个选定的多个数据串集合中的一个。如果数据流的部分包含所选择的多个数据串集合中的一个，则将多个数据串解码成相应的多个数据字集合。该解码过程允许在单个解码周期中解码多个编码数据串。该过程可以使用单个查找表或一组拆分级查找表来实现。上述过程也可以应用于其中可变长度数据字被变换成固定长度编码数据串以对可变长度数据字进行编码的编码方案。此外，上述过程可以应用于编码方案，其中可变长度数据字被变换成可变长度数据串，以对可变长度数据字和数据串进行编码和解码。

IPRDB

热门服务

关于我们

友情链接

联系方式