Patent ID: 6400852
Filing Date: 2002-06-04
Classification: G06T,G09G,H04N

Abstract:
A display system for displaying video data in a video system including a display screen, a user interface for allowing a user to interact with said display screen, and a first memory storage area for storing said video data, said display screen having an associated video blanking period, said display system comprising:second memory storage area for storing current scaling factor information obtained from said user interface while said display screen is in-motion; third memory storage area for storing current base address information corresponding to a retrieval starting point within a frame of video data stored in said first memory storage area obtained from said user interface while said display screen is in-motion; means for updating during said video blanking period said second memory storage area with said current scaling factor information and said third memory storage area with said current base address information; means for retrieving a frame of video data from said first memory storage area using said current base address information after said video blanking period; means for scaling said retrieved frame of video data using said current scaling factor information; means for outputting scaled video data from said scaling means to said display screen wherein video data scaling and scanning occurs while said display screen is in-motion.