Servo feedback control based on invisible scanning servo beam in scanning beam display systems with light-emitting screens
US7878657B2 · kind B2 · utility
48Cited by
139References
20Claims
0Family size
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Key dates
| Filing date | Jun 27, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Nov 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3135
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Scanning beam display systems that scan at least one invisible servo beam and an excitation beam onto a screen that emits visible light under excitation of the light of the excitation beam and control optical alignment of the excitation beam based on positioning of the servo beam on the screen via a feedback control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.