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热词
    • 10. 发明授权
    • Simultaneous communication method and system
    • 同时通信方法和系统
    • US4896151A
    • 1990-01-23
    • US112212
    • 1987-10-26
    • Shoubu KuranamiMasahiro Sakata
    • Shoubu KuranamiMasahiro Sakata
    • H04L1/18H04L12/403
    • H04L12/403
    • In a simultaneous communication as in a POS system in which the same data including a multiplicity of data blocks is transmitted from a controller to a multiplicity of terminals all at once, the controller transmits all of the data blocks to the terminals without receiving any acknowledgement from each of the terminals in the course of data transmission. Each time the data block is received, the terminals hold information concerning the acknowledgement of the data block. After the termination of transmission of the whole of the data, the controller receives the acknowledgement information from each terminal into a management table. Based on the contents of the mangement table, the controller retransmits the data to a terminal(s) indicative of a negative acknowledgement in a similar manner to the above-mentioned data transmission or while taking acknowledgement for each data block.
    • 在与包括多个数据块的相同数据从控制器一次发送到多个终端的POS系统中的同时通信中,控制器将所有数据块发送到终端,而不接收任何来自 每个终端在数据传输过程中。 每次接收到数据块时,终端保存关于数据块确认的信息。 在整个数据传输结束后,控制器从每个终端接收到确认信息到一个管理表中。 基于管理表的内容,控制器以与上述数据传输类似的方式或在对每个数据块进行确认时将数据重新发送到指示否定确认的终端。