公开(公告)号：US5818877A

公开(公告)日：1998-10-06

申请号：US622659

申请日：1996-03-26

申请人： Min-Jen Tsai ,  John D. Villasenor ,  Feng Chen

发明人： Min-Jen Tsai ,  John D. Villasenor ,  Feng Chen

IPC分类号： H03M7/40 ,  H03M7/46 ,  H04M7/46

CPC分类号： H03M7/4006 ,  H03M7/40 ,  H03M7/46

摘要： A method generates a reduced number of values representing a sequence of grouped data values and partitions the reduced number of values by first mapping data values into groups of symbols and then partitioning the resulting stream of symbols. The digits representing the first data value in each group are replaced with symbols from a first alphabet. The most significant digit of the second data value in each group and the sign of that second data value are also represented by a symbol from the first symbol set, while the remaining significant bits of the second data value in each group are represented by symbols from a second symbol set. A stream of symbols which represent a sequence of grouped data values is partitioned into first partition symbol groups and second partition symbol groups. Each first partition symbol group comprises the symbols representing the first data value in each group and also the symbol representing the least significant bit of the second data value which follows. Each second partition symbol group comprises the symbols representing all digits of a second data value excluding the symbol which represented the least significant digits.

摘要翻译： 一种方法生成表示分组数据值序列的减少数量的值，并且通过首先将数据值映射到符号组，然后划分所得到的符号流，来分割减少数量的值。 表示每组中第一个数据值的数字将被替换为来自第一个字母表的符号。 每个组中的第二数据值的最高有效位和该第二数据值的符号也由来自第一符号集的符号表示，而每组中的第二数据值的剩余有效位由 第二个符号集。 表示分组数据值序列的符号流被划分成第一分区符号组和第二分区符号组。 每个第一分区符号组包括表示每个组中的第一数据值的符号，以及表示随后的第二数据值的最低有效位的符号。 每个第二分区符号组包括表示不包括表示最低有效数字的符号的第二数据值的全部数字的符号。