Patent ID: 8593105
Filing Date: 2013-11-26
Classification: H02J

Abstract:
1. A method of operating an inductive charger circuit for supplying power to an object via an inductive coupling, the inductive charger circuit having a primary circuit, said method comprising the steps of: probing for presence of the object by supplying power to the primary circuit and sensing an amount of power supplied to the primary circuit; determining if the sensed amount of power is approximately equal to a predetermined threshold; based on the sensed amount of power being approximately equal to the predetermined threshold, setting a charge status to indicate the battery is not fully charged; checking the charge status; supplying power to the primary circuit at an operating frequency in order to charge the battery of the object if (i) the sensed amount of power is not approximately equal to the predetermined threshold and (ii) the charge status indicates the battery is not fully charged; and repeating said probing and said determining steps if (i) the sensed amount of power is not approximately equal to the predetermined threshold and (ii) the charge status indicates the battery is fully charged.