Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1977-02-22
1978-08-01
Larkins, William D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
357 24, G11C 1928, H01L 2978
Patent
active
041045432
ABSTRACT:
Signal charges in two charge coupled device (CCD) registers are subtracted one from the other by alternately passing them under a common, periodically clamped, normally floating sensing electrode. During those periods when the electrode is clamped, charge is shifted from the subtrahend register to the substrate region underlying the sensing electrode and charge, which has been shifted there previously from the minuend register, is shifted out of that region. During the intervening time periods, when the sensing electrode floats, the process is reversed, with charge from the minuend register being shifted under the sensing electrode and charge previously shifted there from the subtrahend register being shifted out. The resulting voltage reached by the sensing electrode during its floating intervals represents the difference between the charges in the two registers.
REFERENCES:
patent: 3623132 (1971-11-01), Green
patent: 3656011 (1972-04-01), Weinberg
patent: 3801883 (1974-04-01), Tiemann
patent: 4004157 (1977-01-01), Baertsch et al.
patent: 4032767 (1977-06-01), Lagnado
Engeler et al., "The Surface-Charge Transistor", IEEE Trans. Electron Devices, vol. ED-18 (12/71), pp. 1125-2236.
Melen et al., "One-Phase CCD: A New Approach to Charge-Coupled Device Clocking", IEEE J. Solid-State Circuits, vol. SC-7(2/72), pp. 92-93.
Hughes Aircraft Company
Larkins William D.
MacAllister W. H.
Munson Gene M.
Szabo Joseph E.
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