Color sensor system with voltage offset correction
US7057155B2 · kind B2 · utility
2Cited by
2References
15Claims
0Family size
Inventors
Key dates
| Filing date | Jul 29, 2004 |
| Grant date | Jun 6, 2006 |
| Priority date | — |
| Expiry date | Sep 1, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/524
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A technique for sensing color involves detecting a portion of incident light that is not filtered by a color filter in addition to portions of the incident light that are filtered by color filters. The output related to the unfiltered light is used along with the outputs related to the filtered light to correct for voltage offsets that affect the amplification of the outputs. In an application, the output related to the unfiltered light is subtracted from the outputs related to the filtered light in a calculation of a linear transformation matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.