Abstract: Disclosed is a digital entertainment system which can receive, store and reproduce multimedia data such as broadcasts, provide diverse communication interfaces, and exchange and share data with external appliances connected thereto. In the network printer control system, an audio and video (A/V) signal processing part receives external broadcasting signals, and outputs digital data obtained through a process of channel selection and demodulation of the broadcasting signal. A data over cable service interface specification (DOCSIS) and out of band (OOB) processing part provides a communication interface according to a DOCSIS standard and for an OOB service. An MPEG processing part generates standard video signals by decoding input data by a predetermined method, and outputs the generated standard video signals to any external appliances, and a system bus communicably connects the signal processing part, the DOCSIS/OOB processing part and the MPEG processing part.

Abstract: A method and apparatus to download a main program from a memory card in a digital receiver. The digital receiver includes a central processing unit, a memory, a memory card interface, and a key input unit. The method executes a boot program to initialize the digital receiver, detects a memory card insert signal triggering a search of a file having an predetermined file extension in the memory card through the memory card interface, reads and stores the file in an auxiliary memory, reads a header of the file read having the predetermined extension, determines whether the file read is the main program, downloads the main program to the memory, and determines whether the main program is downloaded by checking information of the file recorded in the header and a capacity of the main program recorded in the memory.