Patent ID: 8401475
Filing Date: 2013-03-19
Classification: H04B

Abstract:
1. An apparatus for wireless communication between two objects based on inductive coupling between the objects, the apparatus comprising: a first inductor coupled to a first capacitor in parallel to form a first inductor-capacitor pair wherein the first inductor-capacitor pair is coupled to a first object, and wherein the first inductor generates an inductive field responsive to a transmit signal; a second inductor coupled to a second capacitor in parallel to form a second inductor-capacitor pair wherein the second inductor-capacitor pair is coupled to a second object, and wherein the second inductor generates a signal responsive to the inductive field generated by the first inductor; an analog to digital convertor coupled to the second inductor-capacitor pair to convert the signal generated by the second inductor to a digital signal output; and a processor coupled to the analog to digital convertor, wherein the processor is configured to convert the digital signal output to a value indicative of a distance between the first physical object and the second physical object.