Method and apparatus for wireless image transmission to a projector
US7934834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2010 |
| Grant date | May 3, 2011 |
| Priority date | — |
| Expiry date | Jun 18, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus is provided in which a digital image is transmitted to a presentation projector resource over a wireless transmission medium using a reduced amount of transmission bandwidth by transmitting a subset of the digital image data. The subset image data may be a delta subset that represents those areas of the image that have changed since the previous transmission. Header data is provided to further describe the subset image data. A projector discovery logic selects a suitable projector resource based on the order or signal strength of the discovery replies. A wireless image transmission session is established with the selected projector resource during which the projector is unavailable to other devices. The subset image data may be compressed and transmission coordinated with the projector resource so that the data is sent only when it is ready to be received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.