Display apparatus and position detecting method
US8154535B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2009 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | May 11, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image generating unit of a display apparatus generates a determination image based on first and second light reception images obtained from light reception cells in a light-emission period and in a non-light-emission period, respectively. An image determining unit determines whether or not an image of an object to be detected is included in the determination image, stores data corresponding to the determination image as initial data into a storage when the object image is not included in the determination image, and stores the data corresponding to the determination image as detection data into the storage when the object image is included in the determination image. A position determining unit determines at least an object position based on an image represented by the detection data in the storage and an image represented by the initial data in the storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.