Patent ID: 7912441
Filing Date: 2011-03-22
Classification: H04M,H04W,Y02D

Abstract:
1. A method of enabling a near field communication operation of a battery powered portable device, a battery being in a discharged state and having a residual charge, said method comprising: determining a characteristics of said battery by reading said characteristic from a first memory; programming said characteristics into a second memory, said second memory being associated with a near field communication component of said battery powered portable device; said battery being in a discharged state and having a residual charge, said residual charge being at least a minimal charge specified for operation of said battery without causing damage thereto by excessive discharge; detecting the presence of a near field communication field; determining that said battery powered portable device is powered off such that said battery is disconnected from said near field communication component of said battery powered portable device; monitoring a voltage level of said battery such that said residual charge does not drop below a damaging voltage level; and activating a switch to connect said battery to said near field communication component.