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US 8,948,273 B2Granted
Method and apparatus for wired signal transmission
OwnerJ. Craig Oxford, D. Michael Shieldsinventors
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Abstract
A method and apparatus for high quality signal transmission, which utilizes normal-mode current flow and produces an audio output signal with suppression of normal-mode voltage amplitude, comprising transmitting an audio input signal source though (1) a buffer amplifier; (2) a modulated current source; (3) a pair of wires; (4) a current transformer; and (5) a receiver amplifier for said current transformer.
Claims13
An apparatus for high quality signal transmission, comprising:
- a single transmission unit, said unit comprising a single transmitter and a single receiver connected by a twisted pair of wires, wherein the transmitter utilizes normal-mode current flow with suppression of normal-mode voltage amplitude and produces an output signal;
- wherein said transmitter comprises a non-inverting buffer amplifier and an inverting buffer amplifier in parallel, and two modulated current sources, a first current source in line with the non-inverting buffer amplifier and the second current source in line with the inverting buffer amplifier;
- and
- wherein said receiver comprises a current transformer, a pair of virtual ground amplifiers in parallel, and a differential amplifier.
1 more element
A method of high quality signal transmission, comprising the step of:
- transmitting an input signal through, in order, (1) an inverted buffer amplifier and a non-inverting buffer amplifier, in parallel;
- (2) a pair of modulated current sources, a first modulated current source in line with the inverted buffer amplifier and a second modulated current source in line with the non-inverting buffer amplifier;
- (3) a twisted pair of wires;
- (4) a current transformer;
- (5) a pair of virtual ground amplifiers, in parallel;
- and (6) (5) a differential amplifier;
- wherein said transmission utilizes normal-mode current flow with suppression of normal-mode voltage amplitude and produces an output signal.
4 more elements
Dependencies are inferred from the claim text.