Imaging array with modulated pixels

Details Imaging array with modulated pixels Imaging array with modulated pixels

2011-08-16

2011-08-16

Whipkey, Jason (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S302000

Reexamination Certificate

active

07999865

ABSTRACT:
An imaging array and a method for operating the same are disclosed. The imaging array includes a plurality of light pixels and a sense amplifier. Each light pixel includes a photodetector that generates and couples a signal indicative of a light exposure to a light pixel node, a readout circuit, and a mixer that mixes a signal on the light pixel node with a pixel oscillator signal. The sense amplifier includes an input node that receives a signal from each light pixel, one light pixel at a time. The sense amplifier also includes a high pass filter that attenuates signals with frequencies less than a cutoff frequency and a mixer that demodulates the signal from the filter to provide a signal that is related to the potential on the light pixel node of the light pixel connected to the first input node.

REFERENCES:
patent: 7110498 (2006-09-01), Yamada
patent: 7279669 (2007-10-01), Uehara

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