Patent ID: 8019003
Filing Date: 2011-09-13
Classification: G06F,G09G

Abstract:
1. A method of capturing a screen, comprising: monitoring, by a computer system, screen changes on a first display system of the computer system, and inserting information regarding the screen changes into a queue, the information including one or more dirty packets describing screen changes in which one or more areas of the screen have been modified and one or more obliterating packets describing screen changes that are simple drawing operations, the simple drawing operations being universal with respect to at least two different operating systems; reading, by the computer system, the information from the queue; and maintaining, by the computer system, a dirty region describing areas of the screen which have been changed, the dirty region being distinct from the queue, wherein areas of the screen affected by the one or more dirty packets are added to the dirty region and areas of the screen affected by the one or more obliterating packets are subtracted from the dirty region.