Generation and storage of column offsets for a column parallel image sensor
US7368696B2 · kind B2 · utility
0Cited by
4References
29Claims
0Family size
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Key dates
| Filing date | May 10, 2005 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | Sep 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/78
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The plural signal chains of an imaging device are calibrated in the digital domain. The pixel array of the imaging device includes a row of calibration pixels. The column circuitry, prior to reading a row of pixels, reads the row of calibration pixels in order to obtain a set of column offsets. The row of pixels is read and processed to produce a corresponding plurality of digital values. The set of column offsets are applied to the digital values to compensate for response differences among the signal chains.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.