Compensating for pixel defects by spatial translation of scene content
US6751005B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2002 |
| Grant date | Jun 15, 2004 |
| Priority date | — |
| Expiry date | Dec 20, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/66
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved method is provided for compensating for pixel site defects of a spatial light modulator (30) in an imaging apparatus (10). An image is formed at a first position and directed to a surface (36). Then, an actuator (40) shifts the spatial light modulator (30) over a shift distance to a second position, which is some integer multiple n of the distance between pixels (72) on the spatial light modulator (30). A second image is formed on the spatial light modulator (30), shifted by the shift distance, and directed to the surface (36). Optionally, dithering is provided with an additional shift of an increment of the distance between pixels (72).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.