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    • 54. 发明授权
    • Data prefetch control method for main storage cache for protecting
prefetched data from replacement before utilization thereof
    • 用于主存储缓存的数据预取控制方法,用于在使用之前保护预取数据不被替换
    • US5983324A
    • 1999-11-09
    • US823836
    • 1997-03-25
    • Toshiyuki UkaiMasaaki ShimizuFujio Fujita
    • Toshiyuki UkaiMasaaki ShimizuFujio Fujita
    • G06F12/08G06F12/12
    • G06F12/126G06F12/0862G06F12/0866
    • When the OS judges that a read request to the secondary storage device from the user process is the sequential access, the OS judges whether prefetching is to be stopped before the data succeeding to the data designated by the request is prefetched, so as to decrease replacement of data prefetched to the main memory by other data before the data is used. The judgment is executed to prevent that succeeding data from being replaced by other data after the succeeding data is prefetched to the cache area in the main memory. That is, it is judged whether the data requested by the read request has already been prefetched, and has already been replaced by other data before the requested data is used by the user process, if the requested data has been prefetched. When these two conditions are met, prefetch is useless. The prefetching accompanying this read request is not executed, the prefetch stop flag is set, and prefetching is prohibited to the succeeding sequential access by this prefetch stop flag. The technology is also disclosed which controls allocation of the cache entries so that a cache entry which holds prefetched data is not used to hold other data before the data is used.
    • 当OS判断从用户进程到辅助存储设备的读取请求是顺序访问时,OS判断是否在预取了由请求指定的数据之后的数据被预取之前是否停止预取,以便减少替换 的数据在使用数据之前被其他数据预取到主存储器。 执行判断以防止在将后续数据预取到主存储器中的高速缓存区域之后,其他数据被替换。 也就是说,如果所请求的数据已被预取,则判断读请求所请求的数据是否已经被预取,并且在所请求的数据被用户进程使用之前已被其他数据替换。 当满足这两个条件时,预取是无用的。 不执行伴随该读请求的预取,预取停止标志被设置,并且通过该预取停止标志禁止对后续顺序访问的预取。 还公开了控制高速缓存条目的分配的技术,使得保存预取数据的高速缓存条目在数据被使用之前不被用于保存其他数据。
    • 55. 发明授权
    • Actuator for pivotable quarter window
    • 可枢转四分之一窗口的执行器
    • US5966871A
    • 1999-10-19
    • US982507
    • 1997-12-02
    • Hirokazu TsudaMasaaki Shimizu
    • Hirokazu TsudaMasaaki Shimizu
    • B60J1/14E05F15/12E05F11/00
    • B60J1/14E05F15/63E05Y2900/55
    • A power window actuator including an electric motor, a reduction gear train for reducing rotational speed of the motor and a linkage mechanism connected to the gear train opens and closes a pivotable quarter window or a rear side vent. The rotation of the motor is mechanically stopped by structural members totally enclosed in a housing containing the motor and the gear train when the pivotable window comes to a fully opened or a fully closed position. An electric current supply to the motor is automatically discontinued by operation of a controller. An output shaft connected to a final stage gear of the speed reduction mechanism is extended outwardly from both sides of the housing. The linkage mechanism is composed of a pair of first links connected to the extended output shaft and a second link pivotably connected to the first links, so that the first links do not drop off from the output shaft without being fastened by a fastening member. Thus, the assembling process of the linkage mechanism is simplified.
    • 包括电动机的电动窗执行器,用于降低电动机的转速的减速齿轮系和连接到齿轮系的联动机构打开和关闭可枢转的四分之一窗口或后侧排气口。 当可枢转的窗口达到完全打开或完全关闭的位置时,电机的旋转机械地停止在结构构件上,该结构构件完全封闭在容纳电动机和齿轮系的壳体中。 通过控制器的操作自动停止对电机的电流供应。 连接到减速机构的末级齿轮的输出轴从壳体的两侧向外延伸。 连杆机构包括连接到延伸输出轴的一对第一连杆和可枢转地连接到第一连杆的第二连杆,使得第一连杆不会从输出轴脱落而不被紧固件紧固。 因此,简化了联动机构的组装过程。