Patent ID: 8264612
Filing Date: 2012-09-11
Classification: G09G,H04N

Abstract:
1. A method of raster-scan search for multi-region On-Screen Display (OSD), wherein the multi-region OSD is to be displayed on a screen after an alpha-blending of a mixer, the method comprising: executing a global header search in a first memory module for each or a portion of a plurality search lines, wherein the first executed global header search of OSD regions in the first memory module is used to determine a blending region and to store header addresses of the OSD regions in a second memory module; determining a dummy region at the search line; and transmitting an alpha value for the dummy region, a dummy data of the dummy region, and OSD data of h OSD regions at the search line to the mixer when a dummy region at the search line is determined, wherein h is the number of the OSD regions at the search line.