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    • 24. 发明授权
    • Data transfer system, computer system and active-line inserted/withdrawn
functional circuit board
    • 数据传输系统,计算机系统和有源线插拔功能电路板
    • US5787261A
    • 1998-07-28
    • US563106
    • 1995-11-27
    • Hideki OsakaAkira YamagiwaRyoichi KuriharaMasao Inoue
    • Hideki OsakaAkira YamagiwaRyoichi KuriharaMasao Inoue
    • G06F13/40G06F13/00
    • G06F13/4081
    • It is an object of the present invention to provide an active-line inserted/withdrawn functional circuit board, a data transfer system and a computer system which systems allow the functional circuit board to be inserted and withdrawn with signal lines remaining in an active state while achieving a high speed data-transfer of a bus, and the reliability to be enhanced by eliminating malfunctions which occur particularly during the insertion of a functional circuit board. The data transfer system or the computer system comprising: a functional circuit board having a functional circuit, a pre-charge resistor and a switching element connected in parallel to an input/output signal path of the functional circuit and a switching control means for controlling the conduction of the switching element through synchronization with a delayed clock signal resulting from delaying a bus clock signal for use in data transfers through the bus by a time shorter than a bus-clock cycle time of the bus clock signal; and a connector provided on an input/output end of the parallel connection of the pre-charge resistor and the switching element, whereby the functional circuit board can be inserted and withdrawn to and from the bus.
    • 本发明的目的是提供一种有源线插入/取出功能电路板,数据传输系统和计算机系统,其中系统允许功能电路板被插入和撤回,信号线保持在活动状态,同时 实现总线的高速数据传送,以及通过消除特别是在插入功能电路板期间发生的故障而增强的可靠性。 数据传送系统或计算机系统包括:功能电路板,具有与功能电路的输入/输出信号路径并联连接的功能电路,预充电电阻和开关元件;以及开关控制装置,用于控制功能电路 开关元件通过与延迟总线时钟信号的延迟时钟信号同步地传导,以用于通过总线的数据传输比总线时钟信号的总线时钟周期时间短的时间; 以及设置在预充电电阻器和开关元件的并联连接的输入/输出端上的连接器,由此功能电路板可以从总线插入和拔出。