Optical row displacement for a fault tolerant projective display
US5790297A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Jun 27, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2330/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projective display system includes a light source, a display surface, and a two dimensional light modulator array in an optical path between the light source and the display surface. The two dimensional light modulator array has a plurality of light modulators arranged in rows to modulate light from the light source, with at least one row being susceptible to failure. To compensate for any failed rows, an optical element redirects modulated light from presenting a first row of virtual pixels on the display surface to substantially occupy a second row of virtual pixels on the display surface. In conjunction with various image processing techniques for deblurring, this permits partial or complete correction for faulty rows of light modulators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.