Patent ID: 7941098

Claim:
An integrated circuit (IC) device, comprising: a first data transmission circuit coupled to provide first data to a common data line; a second data transmission circuit coupled to provide second data to the common data line while the first data is being provided by the first data transmission circuit; a first receiver circuit coupled to receive the first data from the common data line while essentially excluding receiving the second data; and a second receiver circuit coupled to receive the second data from the common data line while essentially excluding receiving the first data wherein the first data transmission circuit includes a first frequency modulator circuit coupled to receive the first data at a predetermined frequency and provide first modulated data at a first carrier frequency to the common data line; the second data transmission circuit includes a second frequency modulator circuit coupled to receive the second data at essentially the predetermined frequency and provide second modulated data at a second carrier frequency to the common data line; and the first receiver circuit includes a first band pass filter coupled to the common data line, the first band pass filter allowing the first carrier frequency to pass to a first band pass filter output while essentially excluding the second carrier frequency from passing to the first band pass filter output.