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    • 96. 发明授权
    • Computer system having a bridge between two buses with a direct memory
access controller and an alternative memory access controller
    • 计算机系统在具有直接存储器访问控制器的两条总线与备用存储器访问控制器之间具有桥接
    • US5621902A
    • 1997-04-15
    • US351195
    • 1994-11-30
    • Moises CasesRichard G. HofmannLance M. Venarchick
    • Moises CasesRichard G. HofmannLance M. Venarchick
    • G06F13/40H01J13/00
    • G06F13/4027
    • A computer system having a peripheral controller interconnect (PCI) bus and an industry standard architecture (ISA), with ISA compatible devices coupled to the ISA bus, is provided with a first bridge coupled between the PCI and ISA buses. The first bridge has a first direct memory access (DMA) control circuit for controlling DMA transfers with the ISA devices. In order to achieve expanded compatibility with other types of devices, the system is also provided with an expansion bus, such as a Microchannel bus, with Microchannel compatible devices coupled to the Microchannel bus. A second bridge is coupled between the PCI and the Microchannel buses. This second bridge has a second DMA control circuit that controls DMA transfers with the ISA devices and with the Microchannel devices. Software disables the first DMA control circuit such that only the second DMA control circuit controls DMA transfers within the computer system.
    • 具有连接到ISA总线的具有ISA兼容设备的外围控制器互连(PCI)总线和工业标准架构(ISA)的计算机系统具有耦合在PCI总线与ISA总线之间的第一桥接器。 第一个桥具有用于控制与ISA设备的DMA传输的第一个直接存储器访问(DMA)控制电路。 为了实现与其他类型设备的扩展兼容性,该系统还提供有扩展总线,例如微通道总线,其具有耦合到微通道总线的微通道兼容设备。 第二个桥耦合在PCI和微通道总线之间。 该第二个桥具有第二个DMA控制电路,用于控制与ISA设备和Microchannel设备的DMA传输。 软件禁用第一DMA控制电路,使得仅第二DMA控制电路控制计算机系统内的DMA传输。
    • 97. 发明授权
    • Electrically reprogrammable transversal filter using charge coupled
devices
    • 使用电荷耦合器件的电可重编程横向滤波器
    • US4120035A
    • 1978-10-10
    • US825123
    • 1977-08-16
    • Moises CasesFung Yuel ChangBarry Jay Rubin
    • Moises CasesFung Yuel ChangBarry Jay Rubin
    • G06G7/16G11C27/04H01L21/339H01L29/76H01L29/762H03H15/02H03K5/159
    • G11C27/04G06G7/16H01L29/76H03H15/02H03H2015/026
    • A charge coupled device analog multiplier is used to weigh the sampled and delayed signals for a transversal filter. The digital filter coefficients for the analog multiplier can be electrically programmed and therefore dynamic time-varying systems, such as matched filters, can be designed with reduced circuit complexity. The digital filter includes means for sampling without destroying an analog signal at various points and providing voltages proportional to each sampled signal. The voltages are separately applied to a charge coupled device analog multiplier which accepts the voltages and provides means for multiplying the digital filter coefficient by the analog voltage. The multiplied sample signal is then dumped into a means for summing all of the weighted sample signals to produce an analog signal modified by the digital filter coefficients.
    • 电荷耦合器件模拟乘法器用于对横向滤波器的采样和延迟信号进行称重。 模拟乘法器的数字滤波器系数可以进行电气编程,因此可以设计具有降低的电路复杂度的动态时变系统,例如匹配滤波器。 数字滤波器包括用于采样的装置,而不破坏各个点处的模拟信号并提供与每个采样信号成比例的电压。 电压分别施加到接收电压的电荷耦合器件模拟乘法器,并提供将数字滤波器系数乘以模拟电压的装置。 然后将相乘的采样信号转储成用于对所有加权采样信号求和的装置,以产生由数字滤波器系数修改的模拟信号。