Method and system for copying a framebuffer for transmission to a remote display
US8441494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 2009 |
| Grant date | May 14, 2013 |
| Priority date | — |
| Expiry date | Oct 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Remote desktop servers include a display encoder that maintains a secondary framebuffer that contains display data to be encoded and transmitted to a remote client display. The display encoder submits requests to update the display data in the secondary framebuffer to a video adapter driver that has access to a primary framebuffer whose display data is updated according to drawing commands received from applications running on the remote desktop servers. The video adapter driver utilizes a spatial data structure to track changes made to the display data located in regions of the primary framebuffer and copies the display data in those regions of the primary framebuffer to corresponding regions in the secondary framebuffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.