| 摘要 |
PROBLEM TO BE SOLVED: To provide a front-end apparatus for digital broadcasting without requiring any wiring of a signal cable and a digital broadcasting audiovisual system using the front-end apparatus. SOLUTION: The digital broadcasting audiovisual system has the front-end apparatus (a master) 5 for digital broadcasting, pieces of radio receivers (slaves) 50a to 50d. The front-end apparatus 52 has a radio transmission means for selecting a specific channel from a digital broadcasting signal having a plurality of frequency channels received from an antenna, performing digital demodulation to a baseband signal, and modulating the base band signal for transmitting from a built-in antenna by radio. As a result, no signal cables are required by pieces of radio receivers (slaves) 50a to 50d and the like and digital broadcasting can be viewed by a wireless system. COPYRIGHT: (C)2004,JPO
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