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    • 8. 发明授权
    • Serial data communication system and serial data communication method
    • 串行数据通信系统和串行数据通信方式
    • US08972638B2
    • 2015-03-03
    • US12678318
    • 2008-09-17
    • Hiroyuki Koide
    • Hiroyuki Koide
    • G06F13/00H04L1/00H04L7/00H04L7/04
    • H04L1/0079H04L7/0008H04L7/041
    • When transmitting serial data from a master device to a slave device, it is possible to promptly detect a communication error if any occurs. Serial data transmitted from the master device to the slave device has two or more continuous bytes of dummy data having an identical structure. When the slave device recognizes the dummy data, communication error processing is executed. Assume that the serial data is shifted by an affect of a noise. In this case, “a text end control code (ETX)” is also shifted and the serial data cannot be recognized and no data reception end process is executed. However, during a period after this, a part of the first dummy data and a part of the second dummy data are received and one dummy data is recognized. Thus, the slave device can promptly execute the communication error processing.
    • 当从主设备向从设备发送串行数据时,如果发生任何异常,可以及时检测通信错误。 从主设备发送到从设备的串行数据具有两个或更多个具有相同结构的连续字节的虚拟数据。 当从设备识别出虚拟数据时,执行通信错误处理。 假设串行数据被噪声的影响移位。 在这种情况下,“文本结束控制码(ETX)”也被移位,串行数据不能被识别,并且不执行数据接收结束处理。 然而,在此之后的一段时间中,接收到第一伪数据的一部分和第二伪数据的一部分,并且识别出一个伪数据。 因此,从设备可以迅速地执行通信错误处理。