Contactless recharging of mobile terminal battery
First Claim
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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.
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Abstract
A mobile terminal has a contactless function module that is used to perform a contactless transaction and also used to perform battery recharging. The mobile terminal has a power source operatively connected with the contactless function module and adapted to be recharged by induced current created by electromagnetic fields detected by the contactless function module.
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Citations
9 Claims
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1. A method of charging a battery by a contactless unit of a mobile terminal, the method performed by the contactless unit and comprising:
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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. - View Dependent Claims (2, 3, 4)
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5. A mobile terminal comprising:
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a contactless unit that is used to perform a contactless transaction and a power source charging operation; a battery connected with the contactless unit; and a secure element configured to store data and to be accessed through the contactless unit, wherein the contactless unit is configured to; detect a radio frequency (RF) field; detect whether a transaction is requested from a secure element, wherein the secure element is included in the mobile terminal; determine 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; transfer 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; transfer 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 transfer 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. - View Dependent Claims (6, 7, 8, 9)
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Specification