Method and apparatus for coding a data flow carrying binary information
    1.
    发明授权
    Method and apparatus for coding a data flow carrying binary information 失效
    用于编码携带二进制信息的数据流的方法和装置

    公开(公告)号:US3810155A

    公开(公告)日:1974-05-07

    申请号:US21761072

    申请日:1972-01-13

    Inventor: WIDL W KARLSSON S

    CPC classification number: H04L25/4908

    Abstract: The present invention relates to a method of coding a data flow carrying binary information in a local transmission equipment. The data flow comprises two kinds of data signal elements and control signal elements, whereby an optional polarity on the line terminal of the transmission can be selected. The coding method uses four different binary code words 0101, 1010, 0011 and 1100, so that the first kind of the data elements corresponds to one of the code words 0101 or 1010 and the other kind of the code words corresponds to one of the code words 0011 and 1100. One or the other of the code words is selected so that more than two of the code words will not follow one another upon the coding of more than two data elements of the same kind.

    Abstract translation: 本发明涉及在本地传输设备中编码携带二进制信息的数据流的方法。 数据流包括两种数据信号元件和控制信号元件,由此可以选择传输线路终端上的可选极性。 编码方法使用四个不同的二进制码字0101,1010,0011和1100,使得第一类数据元素对应于代码字0101或1010中的一个,并且另一种类型的码字对应于码中的一个 单词0011和1100.选择一个或另一个代码字,使得在编码多于两个相同类型的数据元素时,两个以上的代码字将不会彼此跟随。

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