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    • 4. 发明授权
    • System and method for serial data communications between host and communications devices, and communications device employed in the system and method
    • 用于主机和通信设备之间串行数据通信的系统和方法,以及系统和方法中使用的通信设备
    • US08069274B2
    • 2011-11-29
    • US12510390
    • 2009-07-28
    • Yohsuke FukudaKazuhiko Hara
    • Yohsuke FukudaKazuhiko Hara
    • G06F3/00G06F13/00
    • G06F13/161
    • A communications device includes a communications circuit, a memory, an identifier generator, and a latency controller. The communications circuit exchanges serial data with a host computer and a downstream device, and includes a first input, a first output, a second input, and a second output. The first input receives data from the host computer. The first output transmits data to the host computer. The second input receives data from the downstream device. The second output transmits data to the downstream device. The memory is accessible through the communications circuit. The identifier generator generates an identifier number unique to the communications device in response to an identifier setup request received at the first input. The latency controller determines, based on the generated identifier number, a period of latency required to access the memory through the communications circuit.
    • 通信设备包括通信电路,存储器,标识符发生器和等待时间控制器。 通信电路与主机和下游设备交换串行数据,并且包括第一输入,第一输出,第二输入和第二输出。 第一个输入从主机接收数据。 第一个输出将数据传输到主机。 第二个输入从下游设备接收数据。 第二个输出将数据发送到下游设备。 存储器可通过通信电路访问。 响应于在第一输入处接收到的标识符建立请求,标识符生成器生成通信设备唯一的标识符号。 等待时间控制器基于生成的标识符号确定通过通信电路访问存储器所需的等待时间。