General Electric Company

Marshall K Quick

Samuel C Wang

Martin D Gibbons

Pasquale A Merola

Kenneth J Fuhr

Helmut Lobenstein

A novel readout circuit for a charge injection device is disclosed permitting selection of the integration time to optimize performance. A primary application of the invention is to IR sensing in which performance is required at both low and very high levels of radiation. The readout circuit, in one practical configuration, utilizes a dump pulse recurring at the interval required to scan all elements, in advance of the read pulse also recurring at the scanning interval. The integration time may be adjusted in multiples of the readout period for a single element up to the frame scanning interval, or in approximate fractions of the readout period for a single element, or, at the limit, in a fraction of a microsecond.

Integration time control for a radiation sensitive charge injection

A PN sequence signal estimator is described which synergistically co-operates with an adaptive array processor and a spread spectrum communication system modem such that the adaptive array will null interfering signals, but not desired signals. This is accomplished with the signal estimator generating an estimate of the desired coded signal through the use of the local code and the detected correlation in the modem, and feeding the estimate back to the array in such a manner that it subtracts from the array error voltage, thereby inhibiting null formation.

Spread spectrum signal estimator

A processor capable of performing a two-dimensional inverse transform on high speed analog data and outputing the results in a display compatible format. The processor utilizes two charge coupled devices (CCD's), two matrix multipliers, which each perform a one-dimensional transform. The one-dimensional transformed data is multiplexed into a series to parallel converter so that another matrix multiplier can complete the two-dimensional transformation of the analog data.

Inverse two-dimensional transform processor

Charge transfer filtering and multiplexing apparatus for sampled data is described which includes a plurality of switched capacitor high pass filters coupled in parallel into the stages of a serial charge transfer shift register.

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Whitesboro, NY, United States of America

Marshall K Quick