Patent ID: 6573915
Filing Date: 2003-06-03
Classification: G09G

Abstract:
A method for capture of computer screens in a sequence of frames, comprising:identifying a first set of one or more windows appearing in a first frame in the sequence, each window in the set having respective first-frame window characteristics and window contents; encoding a description of the first set of windows indicative of the appearance of the computer screen in the first frame; identifying in a second frame in the sequence a second set of one or more windows having respective second-frame window characteristics and window contents, the second set including one or more windows corresponding respectively to one or more of the windows in the first set; determining one or more transformations applied to the first-frame window characteristics of the windows in the first set to generate the second-frame window characteristics of the corresponding windows in the second set; and encoding a description of the second set of windows including the determined transformations, for use in reconstructing the computer screen as it appeared in the second frame, wherein identifying the first set of windows comprises identifying windows generated in accordance with an operating system of the computer, which associates each window with a respective function of the computer, such that the contents of the windows are determined by the respective functions.