Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1979-12-20
1981-03-31
Munson, Gene M.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
357 24, 333165, G11C 1928, H01L 2978, H03H 1502
Patent
active
042595975
ABSTRACT:
A filter utilizing charge transfer devices for providing recursive transfer functions is described. The filter includes a circular charge transfer shift register having an even number N of stages, greater than two, and first and second linear charge transfer shift registers. A composite stage of the first linear shift register is coupled to the N.sup.th stage of the circular shift register through a first gating means. A composite stage of the second shift register is coupled to the ##EQU1## stage of the circular shift register through a second gating means. A first sequence of packets of charge is applied to the first shift register, and a second sequence of packets is applied to the second shift register. All three shift registers are clocked at the same frequency. At the end of each clocking cycle the first gating means is operative to combine the charge stored in the N.sup.th stage of the circular shift register and the composite stage of the first linear shift register and to divide the combined charge into a first part contained in the composite stage of the first linear shift register from which it is clocked out and sensed, and a second part which is retained in the circular shift register. Similarly, the second gating means is operative at the end of each clocking cycle to combine the charge stored in the ##EQU2## stage of the circular stage register and the composite stage of the second linear shift register and to divide the combined charge into a first part contained in the composite stage of the second linear shaft register from which it is clocked out and sensed, and a second part that is retained in the circular shift register.
REFERENCES:
patent: 4163957 (1979-08-01), Knauer et al.
patent: 4188597 (1980-02-01), Knauer
Knauer et al., "Parallel-in/Serial-out: A New Approach for CCD Transversal Filters", Electronics Letters, vol. 13, (Mar. 3, 1977), pp. 126-127.
Davis Jr. James C.
General Electric Company
Munson Gene M.
Snyder Marvin
Zaskalicky Julius J.
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