公开(公告)号：US5638064A

公开(公告)日：1997-06-10

申请号：US500274

申请日：1995-07-10

申请人： Takaro Mori ,  Kazunari Matsui ,  Takumi Hayashiyama

发明人： Takaro Mori ,  Kazunari Matsui ,  Takumi Hayashiyama

IPC分类号： G11B20/14 ,  H03M5/14 ,  H04L25/49 ,  H03M7/00

CPC分类号： H04L25/4915 ,  H03M5/145 ,  G11B20/1426

摘要： Digital modulating method and apparatus are provided which converts m-bit data codes, in sequence, into digital modulation codes each consisting of n channel bits (n>m) to form a modulation code sequence using connection codes. Bit patterns of portions of the modulation code sequence and the connection codes are changed or additional bit patterns are inserted into the modulation code sequence so as to meet given conditions of a minimum transition interval, a maximum transition interval, and a Digital Sum Value. Demodulating method and apparatus performing a reverse modulation operation are also described.

摘要翻译： 提供了数字调制方法和装置，其将m位数据代码依次转换为每个由n个通道位（n> m）组成的数字调制代码，以使用连接代码形成调制码序列。 改变调制码序列和连接码的部分的位模式，或者将附加位模式插入到调制码序列中，以满足最小转换间隔，最大转换间隔和数字和值的给定条件。 还描述了执行逆调制操作的解调方法和装置。