Method and apparatus providing multiple exposure high dynamic range sensor
US8134624B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2008 |
| Grant date | Mar 13, 2012 |
| Priority date | — |
| Expiry date | Nov 7, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Imagers reproduce an image by converting photons to a signal that is representative of the image. A sensor readout module reads reset and signal voltages corresponding to a plurality of integration times for each of a plurality of pixels. The sensor readout module is capable of determining whether the differences between reset and signal voltages corresponding to respective integration times indicate a saturation condition of the pixel. Accordingly, the sensor readout module may provide an output signal based on reset and signal voltages corresponding to an integration time that is less than an integration time for reset and signal voltages that indicate the saturation condition. A normalization module may normalize the output signal to correspond with a linear response curve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.