Integrated low power depth camera and projection device
US8681255B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2010 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Jul 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S17/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video projector device includes a visible light projector to project an image on a surface or object, and a visible light sensor, which can be used to obtain depth data regarding the object using a time-of-flight principle. The sensor can be a charge-coupled device which obtains color images as well as obtaining depth data. The projected light can be provided in successive frames. A frame can include a gated sub-frame of pulsed light followed by continuous light, while the sensor is gated, to obtain time of flight data, an ungated sub-frame of pulsed light followed by continuous light, while the sensor is ungated, to obtain reflectivity data and a background sub-frame of no light followed by continuous light, while the sensor is gated, to determine a level of background light. A color sub-frame projects continuous light, while the sensor is active.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.