Image scanner photosensor assembly with improved spectral accuracy and increased bit-depth
US7154545B2 · kind B2 · utility
3Cited by
10References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 30, 2001 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Aug 14, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/486
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Photosensor assemblies have, for each color, multiple line-arrays of photosensors. For each color, the spectral bandwidth received by each line-array is different. The additional spectral bandwidths are used to improve the spectral measurement accuracy, and to increase bit-depth. In one example, one row of a staggered array receives light having a first spectral bandwidth, and a second row of the staggered array receives light having a different spectral response. In a second example, photosensors with different sizes receive light having different spectral bandwidths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.