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    • 5. 发明授权
    • Multiprocessor system with reduced power mode and improved variation of
power demand
    • 具有降低功耗模式和改善功率需求变化的多处理器系统
    • US5724591A
    • 1998-03-03
    • US592236
    • 1996-01-26
    • Tsutomu HaraTakashi MaruyamaHitoshi YoshidomeRyuichi HattoriTsunehiro Tobita
    • Tsutomu HaraTakashi MaruyamaHitoshi YoshidomeRyuichi HattoriTsunehiro Tobita
    • G06F1/04G06F1/32G06F1/26
    • G06F1/3215G06F1/3237Y02B60/1221
    • A multiprocessor system is provided with processor units which are grouped beforehand into some groups, a system status monitoring unit for monitoring a key input operation of a keyboard, a power demand monitoring unit for calculating the difference between the total power demand of the processor units at the present time and the total power demand of the processor units in a low power-demand mode which is measured beforehand, when the key input operation is not carried out in a normal operation mode for a predetermined time, and an operation clock controller for successively reducing or stopping operation clocks supplied to the respective processor units for each group in turn to shift the current mode to the low power-demand mode. With this construction, a power variation which occurs at the time of the switching operation between the normal operation mode and the low power-demand mode or at the time of power supply/power shut-off can be reduced.
    • 多处理器系统设置有预先分组成一些组的处理器单元,用于监视键盘的键输入操作的系统状态监视单元,用于计算处理器单元的总功率需求之间的差异的功率需求监控单元 当在预定时间内在正常操作模式下执行键输入操作时,预先测量的低功率需求模式下的处理器单元的当前时间和总功率需求;以及连续地执行的操作时钟控制器 依次向每个组提供给相应的处理器单元的操作时钟或者停止操作时钟将当前模式转换到低功率需求模式。 利用这种结构,可以减少在正常操作模式和低功率需求模式之间或在电源/电源切断时的开关操作时发生的电力变化。
    • 9. 发明授权
    • Information processing system, bus arbiter, and bus controlling method
    • 信息处理系统,总线仲裁器和总线控制方法
    • US06425037B1
    • 2002-07-23
    • US09407064
    • 1999-09-28
    • Nobukazu KondoKoichi OkazawaYukihiro SekiRyuichi HattoriMasaya UmemuraShigemi AdachiKouichi NakaiTakashi Moriyama
    • Nobukazu KondoKoichi OkazawaYukihiro SekiRyuichi HattoriMasaya UmemuraShigemi AdachiKouichi NakaiTakashi Moriyama
    • G06F1300
    • G06F13/364
    • The present invention provides a means for preventing execution of a transaction such as main storage access from obstruction by bus competition with low-speed IO access and improving the bus occupation efficiency. The present invention includes a first bus, a second bus, a plurality of modules connected to both buses, a bus conversion means for performing protocol conversion of information between both buses, a bus arbiter for arbitrating a bus occupation right request of a bus master, and a storage means for storing access data up to a predetermined amount when the access destination is a predetermined module. Each bus master outputs access destination information and when the bus arbiter judges that one of the bus masters issues a bus occupation right request when it performs an access operation, the bus arbiter refers to the access destination information and the data storage status of the storage means and decides whether or not to give a bus occupation right to the bus master.
    • 本发明提供了一种用于防止诸如通过具有低速IO接入的总线竞争阻塞的主存储访问的事务的执行并提高总线占用效率的手段。本发明包括第一总线,第二总线,多个 连接到两个总线的模块,用于在两个总线之间执行信息的协议转换的总线转换装置,用于仲裁总线主机的总线占用权请求的总线仲裁器,以及用于当存储访问数据达到预定量时存储访问数据的存储装置 访问目的地是预定模块。 每个总线主机输出接入目的地信息,当总线仲裁器在执行访问操作时判断其中一个总线主机发出总线占用权请求时,总线仲裁器参考存取装置的访问目的地信息和数据存储状态 并决定是否给予巴士总线职业权。
    • 10. 发明授权
    • Interface switching apparatus and switching control method
    • 接口切换装置和切换控制方法
    • US06308239B1
    • 2001-10-23
    • US08964603
    • 1997-11-05
    • Hideyuki OsakadaRyuichi HattoriYukihiro Seki
    • Hideyuki OsakadaRyuichi HattoriYukihiro Seki
    • G06F1314
    • G06F13/4022G06F2213/4004
    • In order to share a device among a plurality of hosts, a switching section is adapted to select one of the hosts by switching and connect it to the device by a serial interface. The switching section can be controlled from the particular host through at least an interface cable. When the switching section switches the host to be connected with the device, power continues to be supplied to the device. Further, a connection recognition protocol to be transmitted from the device when beginning to supply power to the device is transmitted from the switching section. In this way, a quick switching operation free of protocol contradictions is made possible without causing any hardware resetting of the device.
    • 为了在多个主机之间共享设备,切换部分适于通过切换选择一个主机,并通过串行接口将其连接到设备。 可以通过至少一个接口电缆从特定主机控制切换部分。 当切换部分切换与设备连接的主机时,继续向设备供电。 此外,从切换部发送从开始向设备供电时从设备发送的连接识别协议。 以这种方式,可以实现没有协议矛盾的快速切换操作,而不会导致设备的任何硬件重置。