The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2015
Filed:
Oct. 22, 2012
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Koushik Krishnan, San Jose, CA (US);
Rainer Gaethke, San Francisco, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04W 4/00 (2009.01); G06K 7/10 (2006.01); H04B 5/00 (2006.01); H04B 5/02 (2006.01); H04M 1/725 (2006.01);
U.S. Cl.
CPC ...
H04W 4/008 (2013.01); G06K 7/10128 (2013.01); H04B 5/0031 (2013.01); H04B 5/0075 (2013.01); H04B 5/02 (2013.01); G06K 7/10237 (2013.01); H04M 1/7253 (2013.01); H04M 2250/04 (2013.01);
Abstract
First and second NFC devices both seek to determine whether the other device is present and available for communication across an NFC channel. The first NFC device modulates a load in its transceiver. The second NFC device transmits a waveform. If the first NFC device detects the waveform while modulating its load, and if the second NFC device detects the load modulation while transmitting the waveform, then the two NFC devices initiate communication in accordance with a communication protocol.