SOUND DATA COMMUNICATIONS SYSTEM OF A VEHICLE, CAPABLE OF USING A DIRECT SPREAD TECHNIQUE RESISTANT TO A NOISE

摘要

PURPOSE: A sound data communications system of a vehicle is provided to perform the differentiated signal processing by sound output devices by transferring sound data using a coaxial cable in place of an optical cable in a vehicle.;CONSTITUTION: A sound data communications system(100) of a vehicle is composed of a transmit unit(100a), a bandwidth reverse spread unit(120), and a receiver(100b). The transmit unit is composed of a channel switching unit(110) and a bandwidth spread unit. The channel switching unit inserts, the media property bit corresponding to the sound output device, into the sound data. The bandwidth spread unit multiplies each bit of the sound data into which the media property bit is inserted by a spread code to change it to a spread data and transfers the spread data. The bandwidth reverse spread unit divides the bit by the spread code to extract the media property bit and the sound data.;COPYRIGHT KIPO 2010