Patent ID: 7675375

Claim:
An electrical oscillator circuit comprising: a first subcircuit with a first signal ground reference and a second subcircuit with a second signal ground reference and a power supply reference, the first signal ground reference being electrically coupled to the second signal ground reference; a crystal oscillator comprised in the first subcircuit, wherein the crystal oscillator is coupled to the first ground reference via at least one capacitor having a relatively low impedance at frequencies above the oscillating frequency and a relatively high impedance at the oscillating frequency; an active device comprised in the second subcircuit coupled to energize the crystal oscillator to provide an oscillating electrical signal transmitted as a differential signal via a two wire conductor to the second subcircuit; wherein the second subcircuit further comprises means for receiving the differential signal transmitted via the two wire conductor; and converting, via a differential amplifier, the differential signal to a single-ended signal with reference to the second signal ground reference or the power supply reference of the second subcircuit.