Patent ID: 7239323

Claim:
A color display driving apparatus in a portable mobile telephone with a color display unit, comprising: means for independently receiving by the portable mobile telephone YUV and RGB data in digital format; a first memory located within the portable mobile telephone for storing YUV data; a second memory located within the portable mobile telephone for storing RGB data; a timing signal generator located within the portable mobile telephone for generating a timing signal for alternatively obtaining access to the first and second memories, and for providing the generated timing signal to the first and second memories; a YUV-RGB converter located within the portable mobile telephone for converting YUV data read from the first memory to RGB data; an on-screen-display (OSD) controller located within the portable mobile telephone for writing the YUV data and the RGB data in the first and second memories, respectively, mixing the RGB data converted from the YUV data stored in the first memory by the YUV-RGB converter with the RGB data read from the second memory, and on-screen displaying the mixed data on the color display unit of the portable mobile telephone.