Patent ID: 7453380

Claim:
An apparatus processing analog signals and outputting digitally converted analog signals via a serial bus, the apparatus comprising: a multiplexer receiving at least one analog signal and outputting only one of the at least one analog signal in response to a control signal; an analog-to-digital converter converting the output analog signal into a digital signal; a first controller generating the control signal, outputting the control signal to the multiplexer, and controlling the operation of the analog-to-digital converter; and a bus controller outputting the digital signal via an external serial bus, wherein the first controller comprises: a first address setting unit storing a unique address of the apparatus; and an activation determination unit receiving activation information via the external serial bus, determining whether the activation information is identical to the unique address of the apparatus, activating the bus controller when the activation information is identical to the unique address, and deactivating the bus controller otherwise.