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    • 1. 发明授权
    • Bus ring-back and voltage over-shoot reduction techniques coupled with
hot-pluggability
    • 总线回铃和电压过拍减少技术加上热插拔
    • US5938751A
    • 1999-08-17
    • US912092
    • 1997-08-15
    • Siamak TavallaeiJoseph P. Miller
    • Siamak TavallaeiJoseph P. Miller
    • G06F3/00G06F13/00G06F13/40
    • G06F13/4081
    • A bus ring-back and voltage over-shoot reduction apparatus with capability for rendering an expansion slot of a computer system hot-pluggable, wherein a logic gate controls a switching element so that when the element is turned on, the input and output (I/O) nodes of the element are in a low ohmic conductive relationship. One of the I/O nodes is coupled to an expansion card whereas the other node is coupled to a bus to which the expansion slot is connected. The apparatus operates as a level shifter wherein the output node voltage follows the input node voltage until pinch-off such that the output voltage remains substantially stable thereafter. The apparatus also isolates the expansion card from the bus when the system is running or during the powering up of the card.
    • 一种具有能够呈现计算机系统的可插拔的计算机系统的扩展槽的总线环回和电压过拍还原装置,其中逻辑门控制开关元件,使得当元件被接通时,输入和输出(I / O)节点处于低欧姆导电关系。 I / O节点中的一个耦合到扩展卡,而另一个节点耦合到扩展槽连接到的总线。 该装置作为电平转换器工作,其中输出节点电压跟随输入节点电压直到夹断,使得输出电压在此之后保持基本稳定。 当系统运行或卡上电时,该设备还将扩展卡与总线隔离开来。
    • 3. 发明授权
    • Method and apparatus for diagnosing fault states in a computer system
    • 用于诊断计算机系统中的故障状态的方法和装置
    • US6000040A
    • 1999-12-07
    • US739687
    • 1996-10-29
    • Paul R. CulleyJoseph P. MillerDaniel S. HullSiamak Tavallaei
    • Paul R. CulleyJoseph P. MillerDaniel S. HullSiamak Tavallaei
    • G06F11/22G06F11/07G06F11/00
    • G06F11/0745G06F11/0748G06F11/079
    • Faults in a computer system having circuits are managed by fault detectors connected to detect fault states of respective circuits. A fault manager associates the fault states with the respective circuits. The fault manager includes a system manager connected to identify which of the circuits is causing faulty operation in the computer system. The fault detectors associated with the respective circuits are configured to detect faulty operation of and to generate fault state information for the respective circuits. A central manager is connected to accumulate fault state information from the fault detectors. One of the circuits includes a bus, and the fault state includes a bus error condition. The bus is connected to multiple devices, and the fault manager identifies which of the multiple devices causes the bus error condition. One of the circuits includes multiple modules, and the fault manager identifies fault states of the multiple modules. The modules include state machines. One of the circuits includes an internal clock, and the fault state of the circuit includes the internal clock not functioning properly. One of the circuits includes a temperature sensor, and the fault state of the circuit includes a high temperature condition detected by the temperature sensor.
    • 具有电路的计算机系统中的故障由连接的故障检测器来管理,以检测各个电路的故障状态。 故障管理器将故障状态与相应的电路相关联。 故障管理器包括连接到系统管理器以识别哪些电路在计算机系统中导致故障的操作。 与相应电路相关联的故障检测器被配置为检测各个电路的故障操作并产生故障状态信息。 连接中央管理器,从故障检测器累积故障状态信息。 其中一个电路包括总线,故障状态包括总线错误状况。 总线连接到多个设备,故障管理器识别多个设备中的哪一个引起总线错误状况。 其中一个电路包括多个模块,故障管理器识别多个模块的故障状态。 模块包括状态机。 其中一个电路包括内部时钟,并且电路的故障状态包括内部时钟不能正常工作。 其中一个电路包括温度传感器,并且电路的故障状态包括由温度传感器检测的高温条件。
    • 4. 发明授权
    • Apparatus and method of preventing a deadlock condition in a computer
system
    • 防止计算机系统中的死锁状况的装置和方法
    • US5797018A
    • 1998-08-18
    • US568478
    • 1995-12-07
    • Siamak TavallaeiJoseph P. Miller
    • Siamak TavallaeiJoseph P. Miller
    • G06F13/362G06F13/14
    • G06F13/362
    • Circuitry for tristating the address and data outputs of a processor to prevent a deadlock condition when the processor and another bus master is accessing a shared resource. The processor is located on a local bus and the other bus master is located on a PCI bus. Bi-directional tristate buffers are placed between the address and data output pins of the processor and the address and data portions of the first bus. If the processor is requesting a local-bus-to-PCI-bus cycle, and the PCI bus master is asserting a request for a local bus shared resource, the processor address and data output pins are tristated by the tristate buffers to allow the PCI bus master cycle to proceed. After the PCI bus master cycle completes, the tristate buffers are reenabled to allow the processor cycle to complete.
    • 用于调整处理器的地址和数据输出的电路,以防止处理器和另一个总线主机访问共享资源时出现死锁状况。 处理器位于本地总线上,另一个总线主机位于PCI总线上。 双向三态缓冲器被放置在处理器的地址和数据输出引脚与第一总线的地址和数据部分之间。 如果处理器正在请求本地总线到PCI总线周期,并且PCI总线主机正在确定对本地总线共享资源的请求,则处理器地址和数据输出引脚由三态缓冲器三态以允许PCI 总线主站周期进行。 PCI总线主机周期完成后,三态缓冲区将重新启用,以使处理器周期完成。