Charge coupled device systems

Details Charge coupled device systems Charge coupled device systems

1975-02-05

1976-05-18

Cook, Daryl W.

Communications: electrical

Digital comparator systems

357 24, 307304, G11B 1108, H01L 2978, H03K 3353

Patent

active

039582108

ABSTRACT:
Analog signals initially are stored in an a linear array such as a charge coupled device (CCD) register. There is provided, for each stage of the linear array, a different column of a CCD matrix, termed here a B register. During a transfer interval, the analog charge signals concurrently are permitted to flow into the columns. As the stages in the B register have much smaller charge storage capacity than the stages in the linear array, the charge signal fills and then overflows successive potential wells of each column until an equilibrium condition is reached. At equilibrium, the number of filled wells in a column will be proportional to the amplitude of the charge signal supplied to that column by the stage of the linear array coupled to the column. The matrix is read by concurrently sensing all of the signals present in one column, and then doing the same for each following column.

REFERENCES:
patent: 3771149 (1973-11-01), Collins
patent: 3819958 (1974-06-01), Gosney
patent: 3858232 (1974-12-01), Boyle
patent: 3903543 (1975-09-01), Smith
T. D. Mok & C. A. T. Salama - "Charge-Transfer-Device Logic Cell" Solid-State Electronics, 1974, Vol. 17, pp. 1147-1154, Pergamon Press, Gt. Britin.

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