公开(公告)号：US3754217A

公开(公告)日：1973-08-21

申请号：US3754217D

申请日：1971-12-20

申请人： IBM

发明人： BELL N ,  COOPER R ,  NAGLE F ,  NEWLIN F ,  STADLER W

IPC分类号： H03M7/02 ,  G06F5/00 ,  G06F13/00 ,  H03M5/00 ,  H04L13/06 ,  H04L17/30 ,  G06F3/00 ,  H03K13/00

CPC分类号： H04L17/30 ,  H03M5/00

摘要： The described apparatus is interposed between the modem or line adapter of a synchronous transmission line and the data processor and will identify for the processor, the code in which data is being received. The discriminator is particularly useful in a system where any one of a number of data terminals using different transmission codes can be connected to one of the ports of the processor. In use, the discriminator examines, at each bit time, the last grouping of bits it has received to detect the presence of a code identifying character. When it detects one such character, the system waits until another character is received to determine if the second character is consistent with the tentatively identified code. If not, the system resets to continue looking for a new identification character. The system continues hunting until a transmission code is fully identified. The discriminator then notifies the processor of the code in which the data is being received.

摘要翻译： 所描述的装置插入在同步传输线的调制解调器或线路适配器和数据处理器之间，并且将为处理器识别正在接收数据的代码。 鉴别器在使用不同传输代码的多个数据终端中的任何一个可以连接到处理器的一个端口的系统中特别有用。 在使用中，鉴别器在每个位时间检查其接收的用于检测代码识别字符的存在的最后一组位。 当它检测到一个这样的字符时，系统等待直到另一个字符被接收以确定第二个字符是否与暂时识别的代码一致。 如果没有，则系统重置以继续寻找新的识别字符。 系统继续搜索，直到传输代码被完全识别为止。 鉴别器然后通知处理器其中正在接收数据的代码。