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    • 9. 发明授权
    • System and method for dynamic alignment of associated portions of a code
word from a plurality of asynchronous sources
    • 用于从多个异步源的代码字的关联部分的动态对齐的系统和方法
    • US5956524A
    • 1999-09-21
    • US891213
    • 1997-07-10
    • Kumar GajjarLarry P. Henson
    • Kumar GajjarLarry P. Henson
    • G06F11/10G06F11/00
    • G06F11/1008
    • The present invention is directed to a novel apparatus for "on-the-fly" data correction and regeneration of a plurality of data read from and stored to a plurality of storage devices. A control circuit is provided for control of data flow to and from the storage devices. The control circuit establishes and maintains a relatively simple semaphore between itself and an interface circuit controlling a FIFO buffer. A mask register is provided as a type of programmable logic AND gate to assert a master ready signal when each of a selected plurality of the interface circuits, one interface circuit per FIFO buffer, indicates that its respective FIFO buffer is ready, either to output or input an entire block. When each is ready, routing and correction commences under control of the control circuit until an entire block has been processed. Each interface circuit includes an associated flip/flop having an output which provides an indication of the ready status. When the flip/flop is set by the interface circuit, the FIFO buffer is ready. When the control circuit resets the flip/flop, the interface circuit establishes that an entire block has been processed.
    • 本发明涉及一种用于对从多个存储装置读取并存储的多个数据进行“即时”数据校正和再生的新装置。 提供控制电路用于控制往返于存储设备的数据流。 控制电路在其自身和控制FIFO缓冲器的接口电路之间建立并维持相对简单的信号量。 当选择的多个接口电路(每个FIFO缓冲器的一个接口电路)中的每个接口电路指示其各自的FIFO缓冲器准备就绪时,提供屏蔽寄存器作为一种类型的可编程逻辑与门来断言主准备信号,以输出或 输入整个块。 当每个都准备就绪时,路由和校正在控制电路的控制下开始,直到整个块被处理。 每个接口电路包括具有提供就绪状态指示的输出的相关联的触发器。 当触发器由接口电路设置时,FIFO缓冲器就绪。 当控制电路复位触发器时,接口电路确定整个块已被处理。
    • 10. 发明授权
    • Bridge for direct data storage device access
    • 用于直接访问数据存储设备的桥
    • US5941969A
    • 1999-08-24
    • US956186
    • 1997-10-22
    • Tamir RamJohn V. VincenetKumar GajjarSara AbrahamSyang Edward SyuPaul Lester Popelka
    • Tamir RamJohn V. VincenetKumar GajjarSara AbrahamSyang Edward SyuPaul Lester Popelka
    • G06F13/40G06F15/16
    • G06F13/4004
    • A bridge in a file server provides a direct link to data storage devices in satisfaction of data requests. The file server has one or more function-specific processors, including network processors (NPs) and file storage processors (FSPs), all operating in parallel and communicating over an interconnect bus. Each FSP is also connected to one or more disk controllers which in turn manage one or more data storage devices. To minimize local bus contention between data storage devices and network communications, separate internal buses are provided in the FSP, one internal bus connected to the interconnect bus for network communications and one internal bus connected to disk controllers for performing I/O operations on data storage devices. The bridge provides a path between the FSP's internal buses so that, for disk access requests, data from a particular data storage device may be sent by the disk controller via the bridge over the interconnect bus to the NP servicing the request with minimal involvement of the local FSP processor.
    • 文件服务器中的一个桥接器可以直接链接到满足数据请求的数据存储设备。 文件服务器具有一个或多个功能特定的处理器,包括网络处理器(NP)和文件存储处理器(FSP),所有这些处理器都通过并行运行并通过互连总线进行通信。 每个FSP还连接到一个或多个磁盘控制器,磁盘控制器又管理一个或多个数据存储设备。 为了最小化数据存储设备和网络通信之间的局部总线争用,FSP中提供单独的内部总线,一条内部总线连接到互连总线进行网络通信,一条内部总线连接到磁盘控制器,用于对数据存储执行I / O操作 设备。 该桥提供了FSP内部总线之间的路径,因此,对于磁盘访问请求,来自特定数据存储设备的数据可以由磁盘控制器通过互连总线上的桥发送到NP,以最少的参与 本地FSP处理器。