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:
Apr. 17, 2012
Filed:
Apr. 16, 2009
Applicants:
Polly Huang, Taipei, TW;
Hao-hua Chu, Taipei, TW;
Chuang-wen You, Taipei, TW;
Inventors:
Assignee:
National Taiwan University, , TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q 5/22 (2006.01); G08B 29/00 (2006.01); G05B 19/00 (2006.01); G05B 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of reducing power consumption of a radio badge in a localization system is disclosed, in which the radio badge is carried by a tracked target and is provided with a pedometer for detecting a footstep count of the tracked target. The method includes: estimating a velocity of the radio badge according to the footstep count detected by the pedometer; calculating a sleep time from the velocity of the radio badge; and controlling the radio badge to discontinue emitting radio signals during the sleep time. An indoor localization system that performs the method is also disclosed.