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1. 发明授权

US6115424A Coding method of dividing information block serving as conversion unit into a plurality of sub-blocks to perform coding for each sub-block, and coding apparatus 失效
标题翻译：将用作转换单元的信息块划分成多个子块以对每个子块进行编码的编码方法，以及编码装置
公开(公告)号：US6115424A
公开(公告)日：2000-09-05
申请号：US436240
申请日：1999-11-09
申请人： Yoshinori Nakatsugawa , Kenji Takemoto
发明人： Yoshinori Nakatsugawa , Kenji Takemoto
IPC分类号： H03M7/14 , H03M7/30 , H03M7/46 , H03M7/48 , H04L25/49 , H04B14/04
CPC分类号： H03M7/3053 , H03M7/46 , H03M7/48
摘要： The information block that is sequentially extracted from an information sequence and that serves as a conversion unit is divided into a plurality of sub-blocks, Then, counting is performed of the information items number of at least one of "0" and "1" that is contained in each sub-block for each sub-block of a plurality of the thus-divided sub-blocks. Then, there is performed, according to the counted result that has been thus obtained, inversion yes/no determination of whether the original information contained in each sub-block should be inverted under the consideration of minimizing the difference between the number of codes "0", and the number of codes "1", contained in the code block as a whole. Then, there is performed, regarding the sub-block, with respect to which a determination of that the original information should be inverted has been made, coding of inverting the original information contained in this sub-block and there is added, with respect to this sub-block, an inversion identification code that represents the effect that the original information has been inverted, while, regarding the sub-block, with respect to which a determination of that the original information should not be inverted has been made, there is performed coding of leaving intact the original information contained in this sub-block without inverting the same and, with respect to this sub-block there is added a maintenance identification code that represents the effect that the original information has been left intact. And by unifying a plurality of code sub-blocks, each of which has had either one of the inversion identification code or maintenance identification code added thereto, the information block is converted into a code block.
摘要翻译：从信息序列中依次提取并作为转换单元的信息块被划分为多个子块。然后，对“0”和“1”中的至少一个的信息项目编号进行计数，被包含在多个这样划分的子块中的每个子块的每个子块中。然后，根据如此获得的计数结果，进行反转是/否确定在考虑到最小化代码数“0”之间的差异的情况下，是否应该将包含在每个子块中的原始信息反转 “，以及包含在代码块中的代码”1“的数量。然后，关于子块，进行关于原始信息应该被反转的确定的编码，对包含在该子块中的原始信息进行反转的编码，并且相对于该子块，表示原始信息已经被反转的效果的反转识别码，而关于子块，关于原始信息的确定不应该被反转，则存在执行完整地保留包含在该子块中的原始信息而不反相，并且相对于该子块，添加了表示原始信息已被保留的效果的维护标识码。并且通过统一多个代码子块，其中每个代码子块已经具有添加到其中的反转识别码或维护识别码中的任一个，将信息块转换为码块。

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