公开(公告)号：US4010360A

公开(公告)日：1977-03-01

申请号：US672107

申请日：1976-03-31

申请人： James M. Alsup ,  Harper J. Whitehouse

发明人： James M. Alsup ,  Harper J. Whitehouse

IPC分类号： G06G7/195 ,  G06F15/34 ,  G06G7/12

CPC分类号： G06G7/195

摘要： A carrier-compatible device for computing the discrete Fourier transform of an input signal, using the chirp-Z transform (CZT) algorithm, comprising means for connecting to a real and imaginary part of an input signal g.sub.k. A pulse generator generates a sequence of very short pulses. A surface acoustic wave (SAW) chirp generator, whose input is connected to the output of the pulse generator, generates cosine chirp signals and sine chirp signals. Four input mixers have as their two inputs a real or imaginary part of the signal g.sub.k and a sine or cosine chirp signal from the SAW chirp generator. First and second summers have as their two inputs the outputs from two of the input mixers. A SAW chirp filter, whose two inputs are the outputs of the summers, filters out the higher components from the input signal and passes the lower components. Third and fourth summers are connected to the SAW chirp filter, whose two inputs are components from the SAW chirp filter. First and second delay lines, whose inputs are connected to the output of the sine or cosine SAW chirp generator, delay their input signals an amount of time such that their output signals are coincident in time with the output signals from the summers. Four output mixers have as their inputs the output from the first or second delay lines and the output of the third or fourth summer. Fifth and sixth summers have as their two inputs the positive or negative components from two of the four output mixers. First and second low-pass filters have as their input the output of the fifth or sixth summer, and their output comprising the real or imaginary part of a complex number G.sub.k at zero frequency.

公开(公告)号：US3940602A

公开(公告)日：1976-02-24

申请号：US508472

申请日：1974-09-23

申请人： Isaac Lagnado ,  Harper J. Whitehouse

发明人： Isaac Lagnado ,  Harper J. Whitehouse

IPC分类号： G06F17/15 ,  H01L27/148 ,  H04N5/359 ,  H04N5/372 ,  H04N5/376 ,  H04N7/30 ,  G06G7/19 ,  H01L31/00

CPC分类号： H04N19/60 ,  H01L27/14825 ,  H04N3/155 ,  H04N3/1575

摘要： A signal processing sensor which utilizes a combination of charge transfer devices and signal processing concepts which simultaneously measures the incident optical signal and performs a linear transformation upon that signal. Two CCD registers are arranged on either side of a photodiode array. Independent control of the transfer gates which control the flow of information stored in the depletion region of the photodiodes results in independent functioning of the two CCD registers. The difference between the charge in the two registers is taken at the output in order to provide both positive and negative weight for the data pattern that is to be convolved or correlated.

摘要翻译： 一种信号处理传感器，其利用电荷转移装置和信号处理概念的组合，其同时测量入射光信号并对该信号执行线性变换。 两个CCD寄存器布置在光电二极管阵列的两侧。 控制存储在光电二极管的耗尽区域中的信息流的传输门的独立控制导致两个CCD寄存器的独立功能。 两个寄存器中的电荷之间的差异在输出端进行，以便为要进行卷积或相关的数据模式提供正负权重。