MUX CHIP OF DIGITAL VIDEO RECORDER/SET TOP BOX

摘要

PURPOSE: A MUX chip of a digital video recorder/set top box is provided to provide various and splendid graphic interfaces for users of the graphic user interface in the MUX chip. CONSTITUTION: A MUX chip(50) of a digital video recorder/set top box includes an OSD(On Screen Display), a graphic user interface program, an application program(30), and a virtual buffer(40). An OSD outputs a video image. A graphic user interface program transmits a bitmap image to the OSD. The application program manages a web browser in the MUX chip, a varying graphic user interface program, and an application. A virtual frame buffer transmits only a new bitmap image by checking a bit map image area.