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:
Oct. 13, 2009
Filed:
Oct. 31, 2003
Pengju Kang, Hartford, CT (US);
Jae-hyuk OH, Tolland, CT (US);
Alan M. Finn, Hebron, CT (US);
Pei-yuan Peng, Ellington, CT (US);
Norbert A. M. Hootsmans, S. Glastonbury, CT (US);
Pengju Kang, Hartford, CT (US);
Jae-Hyuk Oh, Tolland, CT (US);
Alan M. Finn, Hebron, CT (US);
Pei-Yuan Peng, Ellington, CT (US);
Norbert A. M. Hootsmans, S. Glastonbury, CT (US);
Otis Elevator Company, Farmington, CT (US);
Abstract
An apparatus and method for measuring a position of a moveable platform comprising a plurality of RFID tags encoded with location information situated at known locations and a plurality of visual markers situated at precise, known locations. An RF reader attached to a moveable platform reads the RFID tags to determine the approximate location of the platform. A camera apparatus attached to the moveable platform scans the visual marker. The scanned image is processed to provide the precise position information of the platform.