Patent ID: 6339451
Filing Date: 2002-01-15
Classification: G09G,H04N

Abstract:
A graphical on-screen display (OSD) system, comprising:a memory having a first group of memory locations for storing data representing a first group of colors and having a second group of memory locations for storing data representing a second group of colors, data representing a first color being stored in each of the first and second groups of memory locations; a decoder for extracting graphical OSD image representative data included in an auxiliary information component of a television signal, the graphical OSD image representative data comprising data representing addresses of locations in the memory for indicating colors of pixels in a graphical OSD image; an edge detector for processing the OSD image representative data for detecting an edge in the graphical OSD image between a first group of pixels of the first color and a second group of pixels of a second color, and an edge smoother coupled to the decoder and the edge detector for generating a signal representing the OSD image having a smoothed edge in response to the first and second colors being represented by data stored in a first arrangement of the first and second groups of memory locations, and for generating a signal representing the OSD image without a smoothed edge in response to the first and second colors being represented by data stored in a second arrangement of the first and second groups of memory locations.