Method for generating unique image sensor identification,...

Details Method for generating unique image sensor identification,... Method for generating unique image sensor identification,...

2006-10-31

2006-10-31

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S247000

Reexamination Certificate

active

07129973

ABSTRACT:
A method is for generating a key from the fixed pattern noise (FPN) of a CMOS image sensor to be used in generating a digital authentication signature. The key may be generated by temporarily disabling the FPN cancellation circuit that is conventionally included in the system, and generating a substantially “black” image to produce a digitized FPN signal. The key may then be generated from characteristics of the FPN, such as by comparing pairs of pixels, for example.

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