Patent ID: 9269334
Filing Date: 2016-02-23
CPC Classification: G06F,G09G

Claim Text:
1. A method of operating a system comprising a processing device connected to a plurality of display devices, the processing device comprising a processor connected to a system memory and to a single graphics processing unit, the graphics processing unit comprising a graphics processor connected to a video memory for storing image data to be output to a first display device directly connected to the graphics processing unit, the method comprising the steps of: maintaining a system frame buffer and a second frame buffer in the system memory, the system frame buffer storing at least background image data, and the second frame buffer storing image data for outputting to a second display device not directly connected to the graphics processing unit; creating a primary surface in the video memory of the graphics processing unit; copying contents of the system frame buffer onto the primary surface of the video memory; rendering any and all directly rendered applications to be displayed on the second display device onto the primary surface of the video memory; copying at least some of the content, including at least some of the rendered applications, of the primary surface to the second frame buffer in the system memory, and outputting at least some of the content, including at least some of the rendered applications, of the second frame buffer in the system memory to the second display device.