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    • 1. 发明授权
    • Computer system having two DMA circuits assigned to the same address space
    • 具有分配给相同地址空间的两个DMA电路的计算机系统
    • US06209042B1
    • 2001-03-27
    • US09122283
    • 1998-07-24
    • Takashi YanagisawaMasayoshi TaniguchiMasayoshi Nakano
    • Takashi YanagisawaMasayoshi TaniguchiMasayoshi Nakano
    • G06F300
    • G06F13/28
    • A computer system has a central processing unit (“CPU”) and a plurality of peripheral devices. A bus interconnects the CPU and the peripheral devices. Command signals are transmitted over the bus including an initiator ready signal (“IRDY”), a device select signal (“DEVSEL”) and a target ready signal (“TRDY”). First and second direct memory access devices (“DMA”) are connected to the bus and assigned the same address space. First and second switches selectively connect and disconnect the DEVSEL and TRDY signals that are output from the first and second DMA devices, respectively. Controller logic receives the DEVSEL and TRDY signals and directs the opening and closing of the first and second switches.
    • 计算机系统具有中央处理单元(“CPU”)和多个外围设备。 总线连接CPU和外围设备。 命令信号通过总线发送,包括启动器就绪信号(“IRDY”),设备选择信号(“DEVSEL”)和目标就绪信号(“TRDY”)。 第一和第二直接存储器访问设备(“DMA”)连接到总线并分配相同的地址空间。 第一和第二开关分别选择性地连接和断开从第一和第二DMA设备输出的DEVSEL和TRDY信号。 控制器逻辑接收DEVSEL和TRDY信号,并指示第一和第二开关的打开和关闭。
    • 4. 发明授权
    • Portable information processor
    • 便携式信息处理器
    • US06800840B2
    • 2004-10-05
    • US09950995
    • 2001-09-11
    • Masayoshi NakanoTetsuji NakamuraTakashi YanagisawaFusanobu Nakamura
    • Masayoshi NakanoTetsuji NakamuraTakashi YanagisawaFusanobu Nakamura
    • H01J4014
    • G06F1/1677G06F1/1616G06F1/169G06F2200/1632
    • A portable information processor includes a computer main body and a digitizer connected by a flexible hinge defined in a cover. The hinge allows the computer main body and the digitizer to assume different superposed states by means of a flexible separable portion of the cover. In the superposed state of the computer main body and the digitizer, arbitrariness in folding back the separable portion causes runout between the computer main body and the digitizer. In spite of this runout, the superposed state can be accurately detected by means of an optical sensor, including an infrared radiator and an infrared-ray detector, disposed in the computer main body. A flexible reflection member is fixed to a predetermined surface of the separable portion of the leather cover, while assuring a predetermined area. If the computer main body and the digitizer assume a superposed state, light emitted from the infrared radiator is reflected by the flexible reflection member and is incident on the infrared-ray detector.
    • 便携式信息处理器包括计算机主体和通过限定在盖中的柔性铰链连接的数字转换器。 铰链允许计算机主体和数字化仪借助于盖的柔性可分离部分来呈现不同的重叠状态。 在计算机主体和数字化仪的叠加状态下,折回可分离部分的任意性导致计算机主体和数字化仪之间的跳动。 尽管有这种跳动,但是可以通过设置在计算机主体中的包括红外辐射器和红外线检测器的光学传感器来精确地检测重叠状态。 柔性反射构件固定在皮革罩的可分离部分的预定表面上,同时确保预定区域。 如果计算机主体和数字转换器呈现叠加状态,则由红外辐射器发射的光被柔性反射构件反射并入射到红外线检测器上。