Correction of image distortion
US6652104B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 2002 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Feb 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3194
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A technique for easily correcting distortion in an image displayed on a projection surface is provided. A projector comprises: a display image data generator for generating display image data representing a display image to be displayed on the projection surface by using source image data; an electro-optical device for emitting light that forms an image in response to the display image data; and a projection optical system for projecting light emitted by the electro-optical device. The projection optical system comprises a variable angle mirror for reflecting light emitted by the electro-optical device. The display image data generator comprises: an angle information sensing section for sensing angle information for the mirror; and an image data adjusting section for adjusting the source image data in response to the angle information so as to correct distortion of the display image displayed on the projection surface, to generate the display image data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.