Title:
METHODS AND APPARATUS FOR IMPROVING THE IDENTIFICATION OF MULTIPLE NFC-A DEVICES
Document Type and Number:
WIPO Patent Application WO/2013/116681
Kind Code:
A3
Abstract:
Aspects disclosed herein relate to improving technology detection and collision resolution among multiple NFC devices using a NFC type-A RF technology. In one example, a communications device is equipped to determine that a first device sensing response message includes one or more collisions, identify a first remote NFC device of the plurality of remote NFC devices by performing collision resolution on the first device sensing response message, transmit a sleep request message to the first remote NFC device that prohibits the first remote NFC device from responding to a first device sensing request message and the first device sensing request message, receive a second device sensing response message that includes collisions among the plurality of remote NFC devices, and identify a second remote NFC device of the plurality of remote NFC devices by performing collision resolution on the second device sensing response message.
Inventors:
HILLAN JOHN (US)
CHINGALANDE DUBAI (US)
O'DONOGHUE JEREMY R (US)
CHINGALANDE DUBAI (US)
O'DONOGHUE JEREMY R (US)
Application Number:
PCT/US2013/024385
Publication Date:
December 19, 2013
Filing Date:
February 01, 2013
Export Citation:
Assignee:
QUALCOMM INC (US)
International Classes:
G06K7/10
Foreign References:
| EP1845694A1 | 2007-10-17 | |||
| EP1431904A2 | 2004-06-23 | |||
| US20020130766A1 | 2002-09-19 |
Other References:
JOHN HILLAN: "Correction to NFC-A Collision Resolution Activity", 3 February 2012 (2012-02-03), XP055059795, Retrieved from the Internet [retrieved on 20130416]
See also references of EP 2810211A2
See also references of EP 2810211A2
Attorney, Agent or Firm:
EGGERS, Charles E. (5775 Morehouse DriveSan Diego, California, US)
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