Answer to reset (ATR) pushing

• US 7,690,579 B2
• Filed: 07/13/2006
• Issued: 04/06/2010
• Est. Priority Date: 07/13/2006
• Status: Active Grant

• Current Assignee: Malikie Innovations Limited (Key Patent Innovations Limited)
• Original Assignee: Research In Motion Limited (Blackberry Limited)
• Inventors: Adams, Neil, Little, Herbert
• Primary Examiner(s): Labaze; Edwyn
• Application Number:
  US11/457,159
• Publication Number:
  US 20080011851A1
• Time in Patent Office: 1,363 Days
• Field of Search: 235/492, 235/380, 235/441, 235/382, 235/382.5, 235/451, 235/487, 235/375
• US Class Current: 235/492
• CPC Class Codes: G06K 17/0022 arrangements or provisions for transferring data to distant stations, e.g. from a sensing device "transfer between computer elements G06F13/00 "; data-transmission H04L
• CPC Class Codes: G06K 7/0008 General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer
• CPC Class Codes: G06K 7/10297 arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092 cryptographic protocols H04L9/00; network security protocols H04L63/00; real-time communication protocols in data switching networks H04L65/00; network protocols for data switching network services H04L67/00

Abstract

A wireless-enabled smart card reader receives an Answer to Reset (ATR) from a smart card and transmits the ATR using a wireless 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.

Claims

1. A method for communicating an Answer to Reset (ATR) to a computing device by a wireless-enabled smart card reader, the method comprising:

receiving the ATR at the smart card reader from a smart card; and

transmitting the ATR from the smart card reader using a wireless communication link to the computing device without waiting for an ATR request from the computing device,

wherein the ATR is received at the smart card reader following an Open Session command received from another computing device, the method further comprising;

providing the ATR to the other computing device in response to a request for the ATR; and

caching the ATR at the smart card reader,

wherein transmitting the ATR from the smart card reader comprises transmitting the cached ATR from the smart card reader.

2. A computer-readable medium having stored thereon instructions which, when executed by a computing device, result in:

caching an Answer to Reset (ATR) of a smart card in a cache of the computing device upon receipt of the ATR via a wireless communication link from a wireless-enabled smart card reader; and

removing the ATR from the cache upon receipt of an indication that the smart card has been removed from the smart card reader.

3. A computer-readable medium having stored thereon instructions which, when executed by a computing device, result in:

caching an Answer to Reset (ATR) of a smart card in a cache of the computing device upon receipt of the ATR via a wireless communication link from a wireless-enabled smart card reader; and

removing the ATR from the cache in response to dropping a wireless connection with the smart card reader.

4. A method at a computing device comprising:

receiving at the computing device an Answer to Reset (ATR) of a smart card via a wireless communication link from a wireless-enabled smart card reader;

caching the ATR in a cache of the computing device; and

removing the ATR from the cache of the computing device upon receipt at the computing device of an indication that the smart card has been removed from the smart card reader.

5. A method at a computing device comprising:

receiving at the computing device an Answer to Reset (ATR) of a smart card via a wireless communication link from a wireless-enabled smart card reader;

caching the ATR in a cache of the computing device; and

removing the ATR from the cache of the computing device in response to dropping a wireless connection with the smart card reader.