| 摘要 |
PURPOSE: A multifunction integration type mainboard for a set-top box is provided to install a device for receiving digital broadcasting and a device for searching the internet in one mainboard for a set-top box. Therefore, users do not need to install set-top boxes with different functions separately and installation cost is reduced. CONSTITUTION: A processor installing part(10) is for installing a CPU. A north bridge part(20) controls an AGP(Accelerating Graphic support port) and a memory. A main memory part(30) executes an execution program for driving a system. A memory controlling part(40) includes the memory and controls the memory together with the north bridge(20). A south bridge part(25) controls input/output devices such as hard disk drive and USB, and manages various input/output functions. An input/output part(50) is connected to the south bridge part(25) by BUS. Various input/output devices are connected to the input/output part(50). A graphic card part(60) is connected between the north bridge part(20) and the south bridge part(25) by BUS, and controls output of image and the output image. An audio card part(70) controls output of sound and the output sound. A LAN card part(80) transmits/receives internet transmission signal. A digital tuner part(90) receives broadcasting signal of digital mode. Therefore, a user can watch digital broadcasting in a TV of analog mode. An auxiliary memory part(100) performs interface role. Auxiliary memories are connected to the auxiliary memory part(100).
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