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US 8,540,164 B2Granted
Answer to reset (ATR) pushing
AssigneeBlackBerry Limited
InventorsNeil Patrick Adams, Herbert Anthony Little
Life of this patent
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Abstract
A smart card reader receives an Answer to Reset (ATR) from a smart card and transmits the ATR over a communication link to a computing device without waiting for an ATR request from the computing device. The computing device may cache the ATR and use it for subsequent communication sessions with the smart card.
Claims14
A method comprising:
- receiving an Answer to Reset (ATR) at a smart card reader from a smart card;
- and
- transmitting the ATR from the smart card reader to a computing device over a communication link without the smart card reader waiting for an ATR request from the computing device.
A method comprising:
- powering on a smart card when the smart card is coupled to a smart card reader and there is already an established connection between a computing device and the smart card reader;
- after powering on the smart card, receiving an Answer to Reset (ATR) at the smart card reader from the smart card;
- and
- after receiving the ATR from the smart card, transmitting the ATR from the smart card reader to the computing device without waiting for an ATR request from the computing device.
1 more element
A smart card reader comprising:
- a coupling interface through which a smart card is able to be coupled to the smart card reader;
- a communication interface through which the device is able to communicate with a computing device;
- a processor;
- and
- a memory, the memory being able to store code which, when executed by the processor, receives an Answer to Reset (ATR) from the smart card via the coupling interface and pushes the ATR to the computing device via the communication interface without waiting for an ATR request from the computing device.
2 more elements
A system comprising:
- a computing device compatible with at least one communication protocol;
- and
- a smart card reader comprising:
- a communication interface compatible with the communication protocol;
- a coupling interface for coupling a smart card reader
- a processor;
- and
- a memory, the memory able to store code which, when executed by the processor, receives an Answer to Reset (ATR) from a smart card via the coupling interface and transmits the ATR to the computing device via the communication interface without waiting for the computing device to request the ATR.
5 more elements
Dependencies are inferred from the claim text.