Smart card battery charging during card use
First Claim
1. A smart card device, comprising:
- a plurality of interface contacts;
a battery device configured to power an electronic component of the smart card device;
a battery charging device configured to charge the battery device;
a non-transitory memory storing instructions; and
one or more hardware processors coupled to the plurality of interface contacts, the battery charging device, and the non-transitory memory;
wherein the smart card device includes stored logic executable to cause the smart card device to perform operations comprising;
detecting a status of a dedicated input signal received from an interface device, via a contact from among the plurality of interface contacts, after at least one contact from among the plurality of interface contacts come in contact with the interface device; and
directing the battery charging device to divert, from the interface device based the detected status of the dedicated input signal, an input voltage from the interface device to the battery device,wherein the battery device charges from the diverted input voltage;
wherein the operations further comprise;
determining a charge amount remaining in the battery device; and
initiating the diversion of the input voltage to the battery device in response to the determined charge amount remaining in the battery being at or below a predetermined threshold.
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Accused Products
Abstract
Systems, methods, and computer program products are disclosed for dynamically charging an internal battery of a smart card from an interface device (such as a terminal) so that the battery life may be extended. A smart card device detects that it has interfaced with an interface device and that voltage is now being provided to the smart card device. The smart card device may divert some or most of the current being provided with the voltage to charge an internal battery of the smart card device, either concurrent to other communications between the smart card device and the interface device or before/after relevant communications are completed. As a result, the use of a smart card device contributes to the charge of the smart card device'"'"'s internal battery, instead of draining it.
13 Citations
19 Claims
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1. A smart card device, comprising:
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a plurality of interface contacts; a battery device configured to power an electronic component of the smart card device; a battery charging device configured to charge the battery device; a non-transitory memory storing instructions; and one or more hardware processors coupled to the plurality of interface contacts, the battery charging device, and the non-transitory memory; wherein the smart card device includes stored logic executable to cause the smart card device to perform operations comprising; detecting a status of a dedicated input signal received from an interface device, via a contact from among the plurality of interface contacts, after at least one contact from among the plurality of interface contacts come in contact with the interface device; and directing the battery charging device to divert, from the interface device based the detected status of the dedicated input signal, an input voltage from the interface device to the battery device, wherein the battery device charges from the diverted input voltage; wherein the operations further comprise; determining a charge amount remaining in the battery device; and initiating the diversion of the input voltage to the battery device in response to the determined charge amount remaining in the battery being at or below a predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for charging a smart card device, comprising:
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detecting, after insertion of the smart card device into an interface device, a status of a dedicated input signal from the interface device; determining a charge amount remaining in a battery of the smart card device; diverting, from the interface device based on a detected status of the dedicated input signal, an input voltage from the interface device to the battery of the smart card device during at least a portion of a time period that the smart card device is inserted in the interface device, wherein initiating the diverting of the input voltage to the battery is performed in response to determining the charge amount remaining in the battery is at or below a predetermined threshold; and charging the battery of the smart card device from the diverted input voltage during the at least portion of the time period. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A non-transitory machine-readable medium having stored thereon machine-readable instructions executable to cause a machine to perform operations comprising:
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detecting insertion of a machine comprising a smart card device into an interface device and a status of a dedicated input signal from the interface device; determining a charge amount remaining in a battery of the smart card device; diverting, from the interface device based on a detected status of the dedicated input signal, an input voltage from the interface device to a battery of the smart card device while the smart card device is inserted in the interface device, wherein initiating the diverting of the input voltage to the battery is performed in response to the determined charge amount remaining in the battery being at or below a predetermined threshold; and charging the battery of the smart card device from the diverted input voltage. - View Dependent Claims (17, 18, 19)
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Specification