Projection image adjusting method and projection apparatus
US11470292B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Feb 19, 2020 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Apr 12, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3185
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A projection image including a test pattern is projected on a projection surface. The projection image is moved in a first direction. An image of the projection image is captured. A change in the test pattern contained in the projection image the image of which has been captured is detected. When a change in the test pattern is detected, it is determined that the projection image has reached an end of the projection surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.