Patent ID: 6642934
Filing Date: 2003-11-04
Classification: G09G,H04N

Abstract:
An on-screen display (OSD) processor for processing OSD data of a digital video decode system, said OSD processor comprising:an embedded memory; write logic for writing color table data to said embedded memory when said OSD data comprises a color mapped mode and for alternately writing direct color bitmap data to said embedded memory when said OSD data comprises a direct color mode; read logic for selectively reading said color table data from said embedded memory for display when said OSD data comprises said color mapped mode and for directly reading said direct color bitmap data from said embedded memory for display when said OSD data comprises said direct color mode; and wherein said embedded memory is alternately shared between OSD data in said color mapped mode and OSD data in said direct color mode, thereby allowing said OSD processor to provide both color mapped overlay regions and direct color overlay regions using said embedded memory.