Lamp protection system and method
US8384651B2 · kind B2 · utility
0Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2004 |
| Grant date | Feb 26, 2013 |
| Priority date | — |
| Expiry date | May 7, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B21/2086
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video display system such as a liquid crystal display television receiver projection system typically uses a high-intensity discharge lamp of the type that should not be re-started or turned on immediately after being turned off. An improved system protecting the lamp from restarts during a cooling off period. The system maintains the lamp, once energized to produce an image, in an off condition during a predetermined cool-down period following receipt of a power-off. Advantageously, the system automatically powers the lamp on at the end of the cool-down period upon receipt a power-on command during the cool-down period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.