Disk array controller with enhanced synchronous write
    23.
    发明授权
    Disk array controller with enhanced synchronous write 失效
    磁盘阵列控制器具有增强的同步写入功能

    公开(公告)号:US5835955A

    公开(公告)日:1998-11-10

    申请号:US918782

    申请日:1997-08-25

    CPC classification number: G06F11/1435 G06F12/0866

    Abstract: A disk array server has a cache and a log drive wherein data blocks, as received are written synchronously to both the cache and the log drive, the cache being written back to the disk array as opportunity affords. The log drive is managed so, when full, data is overwritten in the order first stored on the log drive. Data blocks written to the log drive are flagged as to whether the same block in cache has been written to the disk array, and the flags are updated as the cache is written back to the disk array. In the event of a power failure, data lost from the volatile cache as not yet written to the disk array may be recovered from the log drive. In one embodiment, the recovery is automatic on startup after a power failure.

    Abstract translation: 磁盘阵列服务器具有高速缓存和日志驱动器,其中所接收的数据块与高速缓存和日志驱动器同时写入,高速缓存作为机会提供被写回到磁盘阵列。 日志驱动器被管理,所以当完整时,数据将以先前存储在日志驱动器上的顺序覆盖。 写入到日志驱动器的数据块被标记为高速缓存中的相同块是否已写入磁盘阵列,并且当高速缓存写回到磁盘阵列时,标志被更新。 在电源故障的情况下,可能会从日志驱动器恢复从易失性缓存中丢失的尚未写入磁盘阵列的数据。 在一个实施例中,恢复在电源故障后的启动时是自动的。

    Micro-personal digital assistant including a temperature managed CPU
    25.
    发明授权
    Micro-personal digital assistant including a temperature managed CPU 失效
    微型个人数字助理,包括温度管理CPU

    公开(公告)号:US5721837A

    公开(公告)日:1998-02-24

    申请号:US756049

    申请日:1996-10-15

    Abstract: A personal digital assistant module with a local CPU, memory, and I/O interface has a host interface comprising a bus connected to the local CPU and a connector at a surface of the personal digital assistant for interfacing to a bus connector of a host general-purpose computer, providing direct bus communication between the personal digital assistant and the host general-purpose computer. In an embodiment, the personal digital assistant also stores a security code. The personal digital assistant according to the invention forms a host/satellite combination with a host computer having a docking bay, wherein upon docking a docking protocol controls access by the host to memory of the personal digital assistant based on one or more passwords provided by a user to the host. In another embodiment the personal digital assistant also has an expansion port connected to the local CPU, and expansion peripheral devices may be connected and operated through the expansion port. In another embodiment the local CPU has temperature sensing circuitry incorporated in at least one portion of the IC comprising the CPU, clock adjustment circuitry connected to the at least one portion, and control circuitry connected to the temperature sensor and to the clock adjustment circuitry, the control circuitry configured for driving the clock adjustment circuitry to provide an operational clock rate as a function of a temperature indication provided by the temperature sensor.

    Abstract translation: 具有本地CPU,存储器和I / O接口的个人数字助理模块具有包括连接到本地CPU的总线的主机接口和个人数字助理的表面处的连接器,用于与主机总线的总线连接器 提供个人数字助理和主机通用计算机之间的直接总线通信。 在一个实施例中,个人数字助理还存储安全码。 根据本发明的个人数字助理与具有对接间隔的主计算机形成主机/卫星组合,其中在对接时,对接协议基于由个人数字助理提供的一个或多个密码来控制主机对个人数字助理的存储器的访问 用户到主机。 在另一个实施例中,个人数字助理还具有连接到本地CPU的扩展端口,并且扩展外围设备可以通过扩展端口连接和操作。 在另一个实施例中,本地CPU具有并入IC的至少一部分的温度感测电路,其包括CPU,连接到至少一个部分的时钟调整电路以及连接到温度传感器和时钟调整电路的控制电路, 控制电路被配置为驱动时钟调整电路,以提供作为由温度传感器提供的温度指示的函数的操作时钟速率。

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