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    • 4. 发明授权
    • Communication bus system with protocol for detecting presence of slave device
    • 具有用于检测从设备存在的协议的通信总线系统
    • US06636923B1
    • 2003-10-21
    • US09561295
    • 2000-04-28
    • Daniel MeirsmanJohan K. J. Van Ginderdeuren
    • Daniel MeirsmanJohan K. J. Van Ginderdeuren
    • G06F1300
    • G06F13/4022
    • An apparatus can be used as a hub station in a communication bus system that contains a host station connected to a host connector of the apparatus and a slave station connected to a slave connector of the appara tus. In the communication bus system operates according to a communication protocol wherein the hub station generates a presence signal on the host connector upon incorporation of the hub station into the system via the host connector. The presence signal is dependent on whether the hub station detects a slave device connected to the slave connector. The apparatus comprises an alternative host port and a hub circuit operatively connected to the host connector, the slave connector, and the alternative host port. The hub circuit is arranged to pass communication between an alternative host processor and the slave device via the alternative host port and the slave connector, generating the presence signal to simulate absence of a connection to the slave connector when the hub station is incorporated into the system at a time when the alternative host processor uses the slave device connected to the slave connector.
    • 一种装置可以用作通信总线系统中的中心站,该通信总线系统包含连接到装置的主机连接器的主机站和连接到该装置的从属连接器的从站。 在通信总线系统中,根据通信协议进行操作,其中,当通过主机连接器将集线器站并入系统时,集线器站在主机连接器上产生存在信号。 存在信号取决于中心站是否检测到连接到从属连接器的从设备。 该装置包括可替换的主机端口和可操作地连接到主机连接器,从属连接器和替代主机端口的集线器电路。 集线器电路被布置成经由替代主机端口和从属连接器在替代主机处理器和从设备之间通过通信,产生存在信号,以在中心站被并入系统时模拟不存在与从属连接器的连接 在替代主机处理器使用连接到从属连接器的从设备的时候。