Projection device, projection system and method for adjusting projection brightness of projection system
US9900566B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2015 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | Dec 22, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3147
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a projection device, a projection system and a method for adjusting projection brightness of the projection system. The method includes: projecting, by a projection unit of each projection device, an image on a projection plane corresponding to the projection unit separately; collecting, by a brightness collecting device, brightness information on the projection planes separately, and sending the brightness information to the projection device; receiving, by a processing unit, the brightness information, and obtaining an actual brightness value of projection of the projection device after processing the brightness information; determining whether the actual brightness value is within a preset brightness value range of the projection device; when the actual brightness value is not within the preset brightness value range; adjusting, by a brightness adjusting unit, the projection brightness of the projection device until the actual brightness value falls within the preset brightness value range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.