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    • 3. 发明授权
    • Method and apparatus to enable a securely provisioned computing environment
    • 实现安全提供计算环境的方法和装置
    • US07913295B2
    • 2011-03-22
    • US11696351
    • 2007-04-04
    • Mark MyersWilliam J. WesterinenTodd L. CarpenterShaun WileyDon Hyun
    • Mark MyersWilliam J. WesterinenTodd L. CarpenterShaun WileyDon Hyun
    • G06F21/22H04L9/32H04N7/16
    • G06F21/62G06F21/34G06F2221/2137
    • A form of removable memory, such as a universal serial bus (USB) flash device, may enable a subscription-based computing system from any PC. The device may include an execution unit including a processor, a private memory including an encrypted application, a computing system interface, a cryptographic unit including a secure storage with a number of metering units, and a computer-readable medium. The computer-readable medium may include instructions for routing messages and data from the execution unit through the computing system interface to a connected computing system. Further, encrypted application data may be routed through the cryptographic unit to the execution unit to thereby transform the encrypted application into executable data for use by the computing system. Also, the device may decrement a number of metering units stored at the device during execution of the encrypted application by the computer.
    • 诸如通用串行总线(USB)闪存设备的可移动存储器的形式可以实现来自任何PC的基于订阅的计算系统。 该设备可以包括执行单元,其包括处理器,包括加密应用的专用存储器,计算系统接口,包括具有多个计量单元的安全存储器的加密单元和计算机可读介质。 计算机可读介质可以包括用于将消息和数据从执行单元通过计算系统接口路由到连接的计算系统的指令。 此外,加密的应用数据可以通过加密单元被路由到执行单元,从而将加密的应用转换成可供计算系统使用的可执行数据。 而且,由计算机执行加密的应用程序期间,设备可以减少存储在设备处的多个计费单元。
    • 6. 发明授权
    • Multiprocessor computer backlane bus
    • 多处理器计算机背板总线
    • US5787095A
    • 1998-07-28
    • US823587
    • 1997-03-25
    • Mark MyersStacey LloydRichard StoutRobert TakasumiJohn Lynch
    • Mark MyersStacey LloydRichard StoutRobert TakasumiJohn Lynch
    • G06F13/364G06F13/40G06F15/40H04L1/00
    • G06F13/4068G06F13/364
    • A computer bus includes a first original signal line, a second redundant signal line, circuitry connected to the first original signal line and the second redundant signal line for driving the first original signal line and the second redundant signal line so as to convey on each identical information, circuitry for receiving signals on the first original signal line and the second redundant signal line, and error checking circuitry for comparing the signals on the first original signal line and the second redundant signal line and for indicating an error if the signals differ. By providing redundant signals for each signal that cannot be check with parity (for example wired-OR signals), the potential for single undetected points of failure is eliminated. In accordance with another embodiment of the invention, a computer having multiple modules connected by a backplane bus.
    • 计算机总线包括第一原始信号线,第二冗余信号线,连接到第一原始信号线的电路和用于驱动第一原始信号线和第二冗余信号线的第二冗余信号线,以便在每个相同的 信息,用于在第一原始信号线和第二冗余信号线上接收信号的电路,以及用于比较第一原始信号线和第二冗余信号线上的信号的差错检测电路,以及用于在信号不同时指示错误。 通过为不能用奇偶校验检查的每个信号(例如,有线或等信号)提供冗余信号,消除了单个未检测到的故障点的可能性。 根据本发明的另一实施例,具有通过背板总线连接的多个模块的计算机。
    • 10. 发明授权
    • Multiprocessor computer backplane bus in which bus transactions are
classified into different classes for arbitration
    • 多处理器计算机背板总线,其中总线事务被分类为不同的类进行仲裁
    • US5581713A
    • 1996-12-03
    • US559043
    • 1995-11-15
    • Mark MyersStacey LloydRichard StoutRobert TakasumiJohn Lynch
    • Mark MyersStacey LloydRichard StoutRobert TakasumiJohn Lynch
    • G06F13/364G06F13/40G06F13/36
    • G06F13/4068G06F13/364
    • A computer having multiple modules connected by a backplane bus includes multiple competition signal lines and multiple class signal lines. Access to the backplane bus to engage in one or more of multiple types of bus transactions is arbitrated between the modules by classifying the bus transactions into different classes and, during each of a succession of competition cycles, when a module wants access to the backplane bus to engage in a particular type of bus transaction, asserting a class signal line corresponding to a class in which the particular type of bus transaction has been classified. Based on information presented on the class signal lines, it is determined which modules are or are not eligible to compete for access to the backplane bus. When a module is eligible to compete for access to the backplane bus, it drives an identification code associated with the module on the competition signal lines. Then, based on information presented on the competition signal lines, a module is granted access to the backplane bus.
    • 具有通过背板总线连接的多个模块的计算机包括多个竞争信号线和多个类信号线。 通过将总线事务分类为不同的类别,并且在连续的竞赛周期中的每一个期间当模块想要访问背板总线时,通过对模块之间的一种或多种类型的总线事务的访问进行仲裁 参与特定类型的总线事务,断言对应于特定类型的总线交易已被分类的类的类信号线。 根据类信号线上提供的信息,确定哪些模块有资格竞争接入背板总线。 当模块有资格竞争访问背板总线时,它会在竞争信号线上驱动与模块相关的识别码。 然后,根据竞争信号线上提供的信息,允许模块访问背板总线。