Charge amplifier with precise, integer gain

Television – Camera – system and detail – Solid-state image sensor

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Details

257214, 348306, 348299, H04N 314, H04N 5335

Patent

active

053432975

ABSTRACT:
In an array of charge injection device (CID) detectors, integer amplification is incorporated into each respective detector of the array. The amplifier for each CID detector in the array performs multiple nondestructive readouts. This provides a gain of N amplification of the signal charge in that detector wherein the signal charge is accurately replicated in a separate charge storage well defined by a magnitude capacitor coupled to the detector. Thus, at the end of the readout process, this separate well contains charge equal to N times the signal charge, N being the number of nondestructive readout cycles in the readout process.

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G. J. Michon et al., "CID Image Sensing", Charge Coupled Devices, Topics in Applied Physics, vol. 38, Chapter 2, Springer-Verlag, Berlin, Heidelberg, New York (1980).
R. S. Akins et al., "Astronomical Applications of Charge Injection Devices", Low Light Level Devices, Society of Photo-Optical Instrumentation Engineers, vol. 78 (1976), pp. 65-71.
E. R. Fossum et al., "A Linear and Compact Charge-Coupled Charge Differencer/Replicator", IEEE Transactions on Electron Devices, vol. ED-31, No. 12, Dec. 1984, pp. 1784-1789.

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