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    • 16. 发明授权
    • Method for controlling access to a shared file and apparatus therefor
    • 用于控制对共享文件的访问的方法及其装置
    • US5293618A
    • 1994-03-08
    • US614088
    • 1990-11-15
    • Michio TandaiMasaaki HamaFujio Fujita
    • Michio TandaiMasaaki HamaFujio Fujita
    • G06F3/06G06F12/00G06F12/08G06F7/00G06F7/04G06F7/20
    • G06F12/084G06F12/0866
    • In an information processing system including a file shared by computer systems each having a central processing system and a main memory, a method for controlling access to the shared file includes a step of storing blocks read from the file into the main memory when the blocks of the file are updated, and a step of comparing at least a portion of the blocks held in a cache memory with at least a portion of the blocks stored in the main memory. When the comparison of at least the portion of the blocks held in the cache memory with at least the portion of the blocks stored in the main memory indicates mismatching, the block is read from the file into the main memory, and when the comparison indicates matching, the block of the main memory is updated. The data to be updated may be in a resident area, an input/output buffer or a same area.
    • 在包括由具有中央处理系统和主存储器的计算机系统共享的文件的信息处理系统中,用于控制对共享文件的访问的方法包括将从该文件读取的块存储到主存储器中的步骤, 文件被更新,并且将保存在高速缓冲存储器中的块的至少一部分与存储在主存储器中的块的至少一部分进行比较的步骤。 当至少存储在高速缓冲存储器中的块的部分至少存储在主存储器中的块的部分的比较指示不匹配时,将块从文件读入主存储器,并且当比较指示匹配 ,主内存块更新。 要更新的数据可以在驻留区域,输入/输出缓冲器或相同区域中。
    • 19. 发明授权
    • Hydraulically operable transmission
    • 液压可变传动
    • US5072814A
    • 1991-12-17
    • US579522
    • 1990-09-10
    • Masaaki HamaJunichirou Inoue
    • Masaaki HamaJunichirou Inoue
    • B60W10/02B60W10/10F16D48/02F16D48/04F16H61/06F16H61/28
    • F16D48/02F16D25/14F16D48/04F16H61/065F16D2048/0209F16H61/068
    • A hydraulically operable transmission comprises change speed gears, a hydraulic clutch, and a hydraulic circuit for operating the change speed gears and hydraulic clutch. The hydraulic circuit includes a plurality of hydraulic actuators interlocked with the change speed gears, and a pilot type control valve for controlling the hydraulic actuators. An oil line leading to the hydraulic clutch includes a pressure increase adjustor for adjusting pressure increase characteristics when the hydraulic clutch is engaged. The pressure increase adjustor includes, arranged parallel to one another, a normally open first switch valve closable when a secondary hydraulic pressure exceeds a first set level, a normally closed second switch valve openable when the secondary hydraulic pressure exceeds a second set level higher than the first set level, and a restrictor. The first switch valve is urged toward an open position by a spring whose urging force is increased when the control valve is operated to a high speed range.
    • 液压可操作的变速器包括变速齿轮,液压离合器和用于操作变速齿轮和液压离合器的液压回路。 液压回路包括与变速齿轮互锁的多个液压执行器,以及用于控制液压致动器的先导式控制阀。 通向液压离合器的油路包括用于在液压离合器接合时调节增压特性的增压调节器。 压力增加调节器包括彼此平行布置的当第二液压超过第一设定水平时可关闭的常开的第一开关阀;当第二液压压力超过第二设定水平时,常闭第二开关阀可打开 第一级和限制器。 当控制阀操作到高速范围时,第一开关阀通过弹簧被推向打开位置,弹簧的作用力增大。