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    • 3. 发明授权
    • Digital signal processing circuit blocks with support for systolic finite-impulse-response digital filtering
    • 数字信号处理电路块,支持收缩有限脉冲响应数字滤波
    • US08458243B1
    • 2013-06-04
    • US12716378
    • 2010-03-03
    • Suleyman Sirri DemirsoyHyun Yi
    • Suleyman Sirri DemirsoyHyun Yi
    • G06F7/38G06F7/32
    • G06F7/5443
    • Digital signal processing (“DSP”) block circuitry on an integrated circuit (“IC”) is adapted for use (e.g., in multiple instances of the DSP block circuitry on the IC) for implementing finite-impulse-response (“FIR”) digital filters in systolic form. Each DSP block may include (1) first and second multiplier circuitry and (2) adder circuitry for adding (a) outputs of the multipliers and (b) signals chained in from a first other instance of the DSP block circuitry. Systolic delay circuitry is provided for either the outputs of the first multiplier (upstream from the adder) or at least one of the sets of inputs to the first multiplier. Additional systolic delay circuitry is provided for outputs of the adder, which are chained out to a second other instance of the DSP block circuitry.
    • 集成电路(“IC”)上的数字信号处理(“DSP”)块电路适用于(例如,在IC上的DSP块电路的多个实例中),用于实现有限脉冲响应(“FIR”) 数字滤波器收缩形式。 每个DSP块可以包括(1)第一和第二乘法器电路和(2)加法电路,用于将(a)乘法器的输出和(b)从DSP块电路的第一其他实例链接的信号相加。 为第一乘法器的输出(加法器的上游)或第一乘法器的输入集合中的至少一个提供收缩延迟电路。 为加法器的输出提供额外的收缩延迟电路,其被链接到DSP块电路的另一个另外的实例。