Method for generating unique image sensor identification, and image sensor system for use therewith
US7129973B2 · kind B2 · utility
19Cited by
12References
37Claims
0Family size
Assignee
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Key dates
| Filing date | May 28, 2002 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Jun 22, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3215
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.