Patent ID: 8699946
Filing Date: 2014-04-15
Classification: G06K,G06Q,H02J,H04B,H04W,Y02T

Abstract:
1. A method of charging a battery by a contactless unit of a mobile terminal, the method performed by the contactless unit and comprising: detecting a radio frequency (RF) field; detecting whether a transaction is requested from a secure element, wherein the secure element is included in the mobile terminal; determining an operation mode of the battery of the mobile terminal between a normal mode and a limit service mode according to a charging state of the battery of the mobile terminal, wherein the normal mode indicates that the battery of the mobile terminal provides power to the secure element and the contactless module and the limit service mode indicates that the mobile terminal provides a part of services of the normal mode; transferring the power induced by the RF field to the battery of the mobile terminal when the transaction from the secure element is not requested and the operation mode is the limit service mode; transferring the power induced by the RF field to the secure element when the transaction from the secure element is requested and the operation mode is the limit service mode; and transferring the power to the battery of the mobile terminal when the transaction from the secure element is requested and the operation mode is the normal mode.