Patent ID: 6898097

Claim:
An image processing circuit comprising: a signal generator configured to generate a time basis signal; an optical sensor element comprising a differential pair of transistors and an optical sensor diode, the optical sensor element configured to receive the time basis signal and an input optical signal, and further configured to generate a differential output electrical signal that is proportional to the product of an amplitude of the time basis signal at a first instance in time and an amplitude of the input optical signal at the first instance in time; an analog computing element comprising a floating-gate pFET configured to perform a mathematical transform operation upon the differential output electrical signal from the optical sensor element at the first instance in time; and an interconnect circuit that is programmable to provide an interconnection between the differential pair of transistors and the optical sensor diode, is programmable to provide an interconnection between the differential pair of transistors and a gate terminal of the floating-gate pFET, and is further programmable to provide a floating charge in the floating-gate pFET of the analog computing element.