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    • 12. 发明授权
    • Power management override for portable computers
    • 电源管理覆盖便携式电脑
    • US06282662B1
    • 2001-08-28
    • US09562360
    • 1995-08-04
    • Charles ZellerJames L. Walker
    • Charles ZellerJames L. Walker
    • G06F126
    • G06F1/3203
    • Method and apparatus for selectively overriding a prepackaged power management driver of a portable personal computer so that data transmitted to the CPIU of the computer by a device, such as a “real time” serial communicators device connected thereto, is not lost during the CPUs latency “wake up” period following a CPU power-down operation. An override system stored in memory comprises an override flag which may be set or cleared by a user or the computer. If the override flag is set, then the power management system is prevented from reducing power to the CPU so that the occurrence of a CPU latency period and thus potential for loss of data is avoided.
    • 用于选择性地覆盖便携式个人计算机的预先包装的电力管理驱动器的方法和装置,使得通过诸如连接到其的“实时”串行通信器装置的设备传送到计算机的CPIU的数据在CPU等待时间期间不会丢失 在CPU掉电操作后的“唤醒”期间。 存储在存储器中的覆盖系统包括可由用户或计算机设置或清除的覆盖标志。 如果设置了覆盖标志,则防止电源管理系统降低CPU的功率,从而避免发生CPU等待时间,从而避免数据丢失的可能。
    • 17. 发明授权
    • Circuit and method for optimizing creation of a compressed main memory
image
    • 用于优化压缩主存储器图像的创建的电路和方法
    • US5828877A
    • 1998-10-27
    • US275163
    • 1994-07-14
    • John J. PearceCharles Zeller
    • John J. PearceCharles Zeller
    • G06F9/445G06F11/14G06F12/08G06F12/00
    • G06F9/4418G06F12/08G06F2212/1044G06F2212/401Y02B60/1225
    • A computer system having a central processing unit ("CPU"), a main memory divisible into allocable units, a secondary storage unit and an operating system for allocating the allocable units to tasks for use thereby is provided with a suspend circuit for creating an optimized compressed image of data in the main memory. In a first embodiment, the suspend circuit comprises: (1) a circuit for initiating execution of a reducing task on the CPU, the reducing task requesting the operating system to allocate unallocated ones of the allocable units to the reducing task, (2) a circuit for storing a bit pattern in the allocable units allocated to the reducing task, the bit pattern chosen to optimize performance of a data compression process and (3) a circuit for executing the data compression process to store a compressed image of the main memory in the secondary storage unit, the bit pattern allowing a size of the compressed image to be reduced and a time required to compress and store the compressed image to be minimized. In a second embodiment, the unallocated allocable units are neither compression-optimized, compressed nor stored. Rather, the reducing task creates a record of all allocated units and the data compression process acts on only those allocated units identified in the record.
    • 具有中央处理单元(“CPU”),可划分为可分配单元的主存储器,辅助存储单元和用于将可分配单元分配给使用的任务的操作系统的计算机系统设置有用于创建优化的挂起电路 在主存储器中压缩数据的图像。 在第一实施例中,暂停电路包括:(1)用于在CPU上启动执行减少任务的电路,所述减少任务请求所述操作系统将所述可分配单元中的未分配的一个分配给所述还原任务,(2) 用于将位模式存储在分配给减少任务的可分配单元中的电路,用于优化数据压缩处理性能的位模式;以及(3)用于执行数据压缩处理以将主存储器的压缩图像存储在 次存储单元,允许减小压缩图像的大小的位图案和压缩和存储压缩图像所需的时间被最小化。 在第二实施例中,未分配的可分配单元既不被压缩优化,压缩也不被存储。 相反,减少任务创建所有分配单元的记录,并且数据压缩过程仅对记录中标识的分配单元起作用。