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.

Date of Patent:
Jul. 05, 2016

Filed:

Oct. 21, 2013
Applicant:

Mediatek Singapore Pte. Ltd., Singapore, SG;

Inventors:

Osama K A Shana'a, Singapore, SG;

Wee-Liang Lien, Singapore, SG;

Eng-Chuan Low, Singapore, SG;

Chin-Heng Leow, Singapore, SG;

Tieng Ying Choke, Singapore, SG;

Yuan Sun, Singapore, SG;

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 5/02 (2006.01); H04W 52/02 (2009.01);
U.S. Cl.
CPC ...
H04W 52/0241 (2013.01); H04W 52/0245 (2013.01); H04W 52/0254 (2013.01);
Abstract

A proximity sensing method employed by a wireless communications device includes the steps of: performing a first predetermined operation to detect a presence of at least a transponder in the proximity of the wireless communications device; when the presence of a transponder in the proximity of the wireless communications device is not detected by the first predetermined operation, performing a second predetermined operation to obtain a first characteristic value and after a period of time, performing the second predetermined operation to obtain a second characteristic value sequentially; checking if the first characteristic value and the second characteristic value satisfy a predetermined criteria; and when the predetermined criterion is satisfied, performing the first predetermined operation again to check the presence of the transponder in the proximity of the wireless communications device.


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