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    • 1. 发明授权
    • Digit-serial transversal filters
    • 数字串行横向滤波器
    • US5034908A
    • 1991-07-23
    • US504503
    • 1990-04-02
    • Richard I. HartleyPeter F. CorbettFathy F. YassaSharbel E. Noujaim
    • Richard I. HartleyPeter F. CorbettFathy F. YassaSharbel E. Noujaim
    • G06F7/52H03M9/00
    • G06F7/5312H03M9/00
    • One type of transversal filter using digit-serial signals in its operation comprises a to-digit-serial converter for converting a succession of input data words received at its input port each to a respective succession of m-bit-wide digits supplied from its output port in order of progressively greater significance, m being a positive plural integer; a clocked delay line having an input tap connected for responding to the m-bit-wide digits supplied from the output port of the to-digit-serial converter and having at least one further tap for supplying a respective tap signal; and means for performing a weighted summation of the input signal to the clocked delay line and each tap signal from the clocked delay line, to generate a filter response in digit-serial format. Another type of transversal filter, which uses digit-serial signals in its operation, comprises a plurality, p in number, of parallel-to-digit-serial converters, each for generating a respective m-bit-wide digit-serial data stream by converting n-parallel-bit words in an input signal to the digital filter, m being a positive integer and n being the product of m and p; a plurality of tapped delay lines having respective input taps connected from respective ones of said parallel-to-digit-serial converters and each having at least one further tap; means for generating p different phases of filter response in digit-serial form by weighting and summing digital signals taken from respective taps on ones of the p tapped delay lines; and p digit-serial-to-parallel converters for converting, on a cyclic basis, the different phases of filter response to parallel-bit words in an output signal from the digital filter.
    • 在其操作中使用数字串行信号的一种类型的横向滤波器包括一个数字串行转换器,用于将在其输入端口处接收的一系列输入数据字转换成从其输出端提供的各个相继的m位宽数字 端口按顺序逐渐显现,m为正整数; 时钟延迟线具有连接的输入抽头,用于响应从位数字串行转换器的输出端口提供的m位宽数字,并具有用于提供相应抽头信号的至少一个另外的抽头; 以及用于对来自时钟延迟线的时钟延迟线和每个抽头信号执行输入信号的加权求和的装置,以产生数字串行格式的滤波器响应。 在其操作中使用数字串行信号的另一种类型的横向滤波器包括多个并行数字串行转换器,每个转换器用于通过以下步骤产生相应的m位宽数字串行数据流: 将输入信号中的n个并行位字转换为数字滤波器,m是正整数,n是m和p的乘积; 多个抽头延迟线,其具有从相应的所述并行到数字串行转换器连接的各个输入抽头,并且每个具有至少一个另外的抽头; 用于以数字串行形式产生滤波器响应的p个不同相位的装置,用于通过对从所述p个抽头延迟线中的一个上的各个抽头获得的数字信号进行加权和求和; 和p位串行到并行转换器,用于在来自数字滤波器的输出信号中循环地将滤波器响应的不同相位转换成并行位字。
    • 8. 发明授权
    • Low-latency two's complement bit-serial multiplier
    • 低延迟二进制补码位串行乘法器
    • US4860240A
    • 1989-08-22
    • US134271
    • 1987-12-14
    • Richard I. HartleyPeter F. Corbett
    • Richard I. HartleyPeter F. Corbett
    • G06F7/52
    • G06F7/525G06F2207/3896
    • A double precision, low-latency two's complement bit-serial multiplier operates on the fact that after both inputs have been fully read into the multiplier, the calculation has proceeded to such a stage that it may be completed with a single counter. The multiplier comprises a plurality of bit slices and an endcell connected in series. The serial bit streams of the operands are sampled by latches in each of the bit slices, and the sampled bit values are accumulated using (5,3) counters to generate partial sum output signals. The partial sum output signal for the last bit slice is the least significant word of the double precision product. The endcell comprises another (5,3) counter which accumulates propagated sum and carry output signals of the bit slices and generates the most significant word of the double precision product.
    • 双精度,低延迟二进制补码位串行乘法器的作用在于,在两个输入都被完全读入乘法器之后,计算已经进行到可以用单个计数器完成的阶段。 乘法器包括串联连接的多个位片和端单元。 操作数的串行比特流由每个比特片中的锁存器进行采样,并且使用(5,3)个计数器累加采样比特值以产生部分和输出信号。 最后一位片段的部分和输出信号是双精度积的最低有效字。 端单元包括另一个(5,3)计数器,其累积传播和并携带位片的输出信号并产生双精度乘积的最高有效字。
    • 10. 发明授权
    • Bit-sliced digit-serial multiplier
    • 位片数字串行乘法器
    • US4910700A
    • 1990-03-20
    • US358277
    • 1989-05-30
    • Richard I. HartleyPeter F. Corbett
    • Richard I. HartleyPeter F. Corbett
    • G06F7/52H03M9/00
    • G06F7/5312H03M9/00G06F2207/386G06F2207/3896
    • A digital multiplier for multiplying together W-bit digit-serial multiplier and multiplicand signals includes a combinational array of multiplier cells arranged in N rows and W columns. A digit-serial-in/parallel-out register supplies respective bits of each successive multiplicand signal to the W columns of the array, the N rows of which receive respective bits of each successive digit of the multiplier signal. After each earlier digit of the multiplier is processed, the carry and sum bits are forwarded without column shift and with one column shift, respectively, from the final row to the first row of multiplier cells. This scrolls the operation of the W-column-by-N-row multiplier cell array, allowing it to be used M times for each word of the multiplier signal, one for each of the M digits in a W-bit word of the multiplier signal. The sum bits from the final column of multiplier cells provide the minor product output signal of the digital multiplier in digit-serial format, as each digit of the multiplier signal is processed. In processing the final digit of the multiplier, the carry and sum bits are shifted differentially by one bit place and are conveyed by shift registers to a digit-serial final adder, the full sum output of which supplies the major product output signal of the digital multiplier in digit-serial form. Supplying the minor and major product output signals in parallel permits pipelined operation of the apparatus.
    • 用于将W位数字串行乘法器和被乘数信号相乘的数字乘法器包括以N行和W列布置的乘法器单元的组合阵列。 数字串行输入/并行输出寄存器将每个连续被乘数信号的相应位提供给阵列的W列,其N行接收乘法器信号的每个连续数位的相应位。 在处理乘法器的每个较早的数字之后,进位和和位被分别从最后一行到第一行乘法器单元转发而不进行列移位和一列移位。 这将滚动W列逐行乘法器单元阵列的操作,允许它对乘法器信号的每个字使用M次,乘数中的W位字中的每个M位一个 信号。 随着乘法器信号的每个数字被处理,来自乘法器单元的最后一列的和位提供数字串行格式的数字乘法器的次要乘积输出信号。 在处理乘法器的最终位时,进位和和位被差分地移位一位位置,并由移位寄存器传送给数字串行最终加法器,其全和输出提供数字的主要产品输出信号 数字串行形式的乘数。 同时提供次要和主要产品输出信号允许设备的流水线操作。