Patent ID: 11902682
Assignee: UTI INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A system for sensing an image, the system comprising:
a complementary metal oxide semiconductor (CMOS) sensor comprising an array of pixels, each pixel having an intensity-based output;
a plurality of mixer circuit elements; and
at least one bus line to which mixer circuit elements are coupled, each of said at least one bus line carrying a bus signal;, wherein, for a plurality of said pixels, each pixel's output is mixed by one of said mixer circuit elements with a carrier signal such that said bus signal on said at least one bus line is a superposition of multiple pixel outputs modulated by said carrier signal, and wherein, for each pixel in said plurality of said pixels, said carrier signal is modulated with a value representing an exposure of said each pixel,, and wherein said pixels output a current, IPixel, in the form of

IPixel=APhotodiode*sinCarrier(2πft+τ)+IOffset,, where f is the frequency of the carrier, τ is the phase of the carrier, IOffset is a DC offset current, and t is time.