Method and system for synchronization of content rendering
US7391791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Jun 24, 2008 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/775
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system for synchronizing the rendering of content at various rendering devices. Each rendering device has a device time and a rendering time. The synchronization system designates one of the rendering devices as a master rendering device and designates all other rendering devices as slave rendering devices. Each slave rendering device adjusts the rendering of its content to keep it in synchronization with the rendering of the content at the master rendering device. The master rendering device sends a message with its rendering time and corresponding device time to the slave rendering devices. Each slave rendering device, upon receiving the message from the master rendering device, determines whether it is synchronized with the master rendering time. If not, the slave rendering device adjusts the rendering of its content to compensate for the difference between the master rendering time and the slave rendering time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.