Projection focusing method, projection focusing apparatus, projector, and readable storage medium
US11849263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2020 |
| Grant date | Dec 19, 2023 |
| Priority date | — |
| Expiry date | Mar 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/67
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure relates to the technical field of projection auto-focusing, and embodiments particularly disclose a projection focusing method, a projection focusing apparatus, a projector, and a readable storage medium. According to the projection focusing method provided by this application, an initial position of a focused motor is roughly determined based on a current projection distance, a focusing direction is determined according to the current projection distance and a projection distance corresponding to the current motor position, a position of a clearest projection picture can be found by traversing a few motor positions, and the speed and precision of projection focusing are greatly increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.