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:
Dec. 29, 2009
Filed:
Sep. 18, 2006
Kyong-ha Park, Suwon-si, KR;
Hyun-su Hong, Seongnam-si, KR;
Jae-myeon Lee, Suwon-si, KR;
Chan-gook Park, Seoul, KR;
Jin-won Kim, Seoul, KR;
Kyong-Ha Park, Suwon-si, KR;
Hyun-Su Hong, Seongnam-si, KR;
Jae-Myeon Lee, Suwon-si, KR;
Chan-Gook Park, Seoul, KR;
Jin-Won Kim, Seoul, KR;
Abstract
A step detecting apparatus and method in a personal navigator where acceleration signals in at least two directions are acquired from an accelerometer sensor, as a pedestrian moves. Variances of the acceleration signals are calculated and summed. The variance sum is compared with a threshold. If the variance sum is greater than the threshold, it is determined that a detected step is a walking step. If the variance sum is less than the threshold, it is determined that the detected step is a mark-time step.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile