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    • 1. 发明授权
    • Shared access control device for integrated system with multiple
functional units accessing external structures over multiple data buses
    • 用于具有多个功能单元的集成系统的共享访问控制设备通过多个数据总线访问外部结构
    • US6038630A
    • 2000-03-14
    • US47139
    • 1998-03-24
    • Eric M. FosterDennis E. FranklinStefan P. JackowskiDavid Wallach
    • Eric M. FosterDennis E. FranklinStefan P. JackowskiDavid Wallach
    • G06F13/16G06F13/40G06F13/00
    • G06F13/4022G06F13/1684
    • A multi-path access control device for an integrated system is presented which allows simultaneous access to multiple external devices coupled thereto by multiple functional units. The multiple functional units are coupled to the shared access control device across two or more high speed, shared data buses. The control device includes multiple bus ports, each coupled to a different data bus, and a non-blocking crossbar switch coupled to the bus ports for controlling forwarding, with zero cycle latency, of requests from the functional units. Multiple external device ports are coupled to the non-blocking crossbar switch for receiving requests forwarded by the crossbar switch, and each external device is coupled to a different external device port. The crossbar switch allows multiple requests at the bus ports directed to different external devices to be forwarded to different external device ports for simultaneous accessing of different external devices coupled thereto pursuant to the multiple requests.
    • 提出了一种用于集成系统的多路径访问控制装置,其允许通过多个功能单元同时访问与其耦合的多个外部设备。 多个功能单元通过两个或更多个高速共享数据总线耦合到共享访问控制设备。 控制设备包括多个总线端口,每个总线端口耦合到不同的数据总线,以及耦合到总线端口的非阻塞交叉开关,用于控制来自功能单元的请求的零周期等待时间的转发。 多个外部设备端口耦合到非阻塞交叉开关,用于接收由交叉开关转发的请求,并且每个外部设备耦合到不同的外部设备端口。 交叉开关允许在指向不同外部设备的总线端口上的多个请求被转发到不同的外部设备端口,以便根据多个请求同时访问与其耦合的不同外部设备。
    • 2. 发明授权
    • Hierarchical computer cache system
    • 分层计算机缓存系统
    • US5539895A
    • 1996-07-23
    • US241910
    • 1994-05-12
    • James W. BishopCharles E. Carmack, Jr.Patrick W. GallagherStefan P. JackowskiGregory R. KloudaRobert D. Siegl
    • James W. BishopCharles E. Carmack, Jr.Patrick W. GallagherStefan P. JackowskiGregory R. KloudaRobert D. Siegl
    • G06F12/08G06F12/00G06F12/12G06F13/00
    • G06F12/08G06F12/0811G06F12/0808
    • A hierarchical cache system comprises a plurality of first level cache subsystems for storing data or instructions of respective CPUs, a higher level cache subsystem containing data or instructions of the plurality of cache subsystems, and a main memory coupled to the higher level cache subsystem. A page mover is coupled to the higher level cache subsystem and main memory, and responds to a request from one of the CPUs to store data into the main memory, by storing the data into the main memory without copying previous contents of a store-to address of the request to the higher level cache subsystem in response to said request. Also, the page mover invalidates the previous contents in the higher level cache subsystem if already resident there when the CPU made the request. A buffering system within the page mover comprises request buffers and data segment buffers to store a segment of predetermined size of the data. When all of the request buffers have like priority and there are fewer request buffers that contain respective, outstanding requests than the number of data segment buffers, the page mover means allocates to the request buffers with outstanding requests use of the data segment buffers for which there are no outstanding requests.
    • 分级缓存系统包括用于存储相应CPU的数据或指令的多个第一级高速缓存子系统,包含多个高速缓存子系统的数据或指令的更高级高速缓存子系统以及耦合到较高级缓存子系统的主存储器。 页面移动器耦合到较高级缓存子系统和主存储器,并且通过将数据存储到主存储器中来响应来自一个CPU的请求以将数据存储到主存储器中,而不复制存储器的先前内容 响应于所述请求向高级缓存子系统发送请求的地址。 而且,当CPU发出请求时,页面移动器使上级缓存子系统中的先前内容无效。 页面移动器中的缓冲系统包括请求缓冲器和数据段缓冲器,以存储数据的预定大小的段。 当所有请求缓冲器都具有优先级,并且存在比数据段缓冲器数量多的请求缓冲器,该请求缓冲器包含与数据段缓冲器数目相对应的未完成请求时,页移动器装置向未请求的请求缓冲器分配请求使用数据段缓冲器 没有未完成的请求。
    • 3. 发明申请
    • Protecting Isolated Secret Data of Integrated Circuit Devices
    • 保护集成电路器件的隔离秘密数据
    • US20100132048A1
    • 2010-05-27
    • US12323670
    • 2008-11-26
    • William E. HallStefan P. Jackowski
    • William E. HallStefan P. Jackowski
    • G06F21/00
    • G06F21/554G06F21/78G06F21/81G06F2221/2143
    • A circuit arrangement, method, and design structure for controlling access to master secret data disposed in at least a portion of at least one persistent region of an integrated circuit device is disclosed. The circuit arrangement includes a clock circuit responsive to an external clock signal, a security state machine configured to control a security state of the integrated circuit device, and a master secret circuit in communication with the security state machine and configured to control access to the master secret data. The security state machine and master secret circuit are isolated from the clock circuit, and the master secret circuit is responsive to the security state machine to selectively erase at least a portion of the master secret data. The master secret circuit may be configured to erase the portion of the master secret data in response to a null or triggered security state.
    • 公开了一种用于控制对设置在集成电路装置的至少一个持续区域的至少一部分中的主秘密数据的访问的电路装置,方法和设计结构。 电路装置包括响应于外部时钟信号的时钟电路,被配置为控制集成电路装置的安全状态的安全状态机以及与安全状态机通信并被配置为控制对主机的访问的主秘密电路 秘密资料。 安全状态机和主秘密电路与时钟电路隔离,并且主秘密电路响应于安全状态机来选择性地擦除主秘密数据的至少一部分。 主秘密电路可以被配置为响应于空或触发的安全状态来擦除主秘密数据的部分。