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:
Sep. 20, 2011
Filed:
May. 26, 2009
Polly Huang, Taipei, TW;
Tsung-han Lin, Taipei, TW;
I-hei NG, Tainan County, TW;
National Taiwan University, , TW;
Abstract
An indoor localization method is implemented using an indoor localization system that includes beacons deployed in an indoor space and transmitting localization signals, and a radio badge for receiving the localization signals. The indoor localization method includes forming signal vectors from the localization signals received by the radio badge at each of predetermined locations in the indoor space, and generating a signal ID value from the signal vectors for each beacon from which the radio badge has received the localization signals. During a tracking phase, signal vectors are formed from the localization signals received by the radio badge at a current location. If the number of the signal ID values is smaller than the number of the signal vectors, the sum of the signal distances is normalized by the number of the signal ID values. An estimated position of the radio badge is obtained using the signal vectors and the signal ID values.