Patent ID: 7295219
Filing Date: 2007-11-13
Classification: G09G,H04N

Abstract:
1. A display driver chip for displaying image data and/or On-Screen Display (OSD) data on a display having a plurality of rows of pixels, the display driver chip comprising: an OSD data circuit that is configured to store at least a portion of the OSD data and to output the stored OSD data row-by-row; an image data circuit that is configured to store only a single row of the image data to be displayed and to output the single row of the image data that was stored; and a combining circuit that is configured to selectively blend the row-by-row OSD data and the single row of the image data, to drive the display; wherein the display driver chip is free of memory that stores a plurality of rows of image data; wherein the image data circuit is further configured to receive the image data directly from a processing system that is external of the display driver chip; wherein the image data circuit comprises: wherein the image row control circuit comprises a shift register and wherein the single image row storing circuit comprises a plurality of latches, wherein a row includes a predetermined number of pixels, wherein the shift register includes the same predetermined number of stages and wherein the plurality of latches includes the same predetermined number of latches.