Low-noise, high dynamic-range image sensor
US9432597B2 · kind B2 · utility
3Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2015 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Jul 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An integrated-circuit image sensor generates, as constituent reference voltages of a first voltage ramp, a first sequence of linearly related reference voltages followed by a second sequence of exponentially related reference voltages. The integrated-circuit image sensor compares the constituent reference voltages of the first voltage ramp with a first signal level representative of photocharge integrated within a pixel of the image sensor to identify a first reference voltage of the constituent reference voltages that is exceeded by the first signal level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.