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    • 12. 发明授权
    • System for sampling a data signal
    • 用于采样数据信号的系统
    • US06473008B2
    • 2002-10-29
    • US09777345
    • 2001-02-06
    • Clifford Mark KellyMarc AuerbachJonathan Fitch
    • Clifford Mark KellyMarc AuerbachJonathan Fitch
    • H03M704
    • G11C27/02A61B5/0002A61B5/0428A61B5/7257A61B2560/0209
    • A sampling system includes an input terminal for receiving a data signal having a signal component and possibly a noise component. A sampler samples the data signal at a sample rate set in responsive to a control signal. A noise detector detects the presence of a noise component, and if a noise component is detected, generates the control signal conditioning the sampler to sample the data signal at a first sample rate satisfying the Nyquist criterion for the data signal including the noise component, and otherwise generating the control signal conditioning the sampler to sample the data signal at a second data rate satisfying the Nyquist criterion for the data signal including only the signal component.
    • 采样系统包括用于接收具有信号分量和可能的噪声分量的数据信号的输入端。 采样器以响应于控制信号设置的采样率采样数据信号。 噪声检测器检测噪声分量的存在,并且如果检测到噪声分量,则产生调节采样器的控制信号,以对于包括噪声分量的数据信号满足奈奎斯特准则的第一采样率采样数据信号,以及 否则产生调节采样器的控制信号,以对于仅包括信号分量的数据信号以满足奈奎斯特准则的第二数据速率采样数据信号。
    • 13. 发明授权
    • Self-configuring memory management system with on card circuitry for
non-contentious allocation of reserved memory space among expansion
cards
    • 具有卡片电路的自配置存储器管理系统,用于在扩展卡之间非争用分配保留的存储器空间
    • US4905182A
    • 1990-02-27
    • US25500
    • 1987-03-13
    • Jonathan FitchRonald Hochsprung
    • Jonathan FitchRonald Hochsprung
    • G06F12/06G06F13/42
    • G06F13/4217G06F12/0661
    • A printed circuit board card adapted to fit into a slot and make electrical connections with cooperating terminals in the slot, the slot being disposed on the main circuit board of a personal computer system, the main circuit board including a CPU, memory, a 32-bit address bus with control signals associated therewith, and input/output circuitry. The slot is coupled to the 32-bit address bus, being substantially a NUBUS bus, and the slot includes distinct identification line means which provide the slot with an identification number (distinct number) in the computer system. The card includes a decoder means which is coupled to the slot to receive the identification number; the decoder means has memory reservation means which causes 256 megabytes of memory space to be reserved for the card in the slot, such that, where the slot number is X, the 256 megabytes of reserved memory space begins at location $X000 0000 and ends at locations $XFFF FFFF.
    • 一种印刷电路板卡,其适于装配到狭槽中,并与所述槽中的配合端子进行电连接,所述槽设置在个人计算机系统的主电路板上,所述主电路板包括CPU,存储器, 具有与其相关联的控制信号的位地址总线以及输入/输出电路。 该时隙耦合到32位地址总线,其基本上是NUBUS总线,并且该时隙包括不同的标识线装置,其在计算机系统中为该时隙提供标识号(不同号码)。 该卡片包括一个解码器装置,该解码装置耦合到该插槽以接收识别号码; 解码器装置具有存储器预留装置,其使得为时隙中的卡预留256兆字节的存储器空间,使得在时隙号为X的情况下,256兆字节的预留存储空间从位置$ X000 0000开始并以 位置$ XFFF FFFF。