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. 04, 2012
Filed:
Nov. 27, 2007
Akio Uchiyama, Tokyo, JP;
Ryoji Sato, Tokyo, JP;
Atsushi Kimura, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
There is provided a position detection system () including a first marker () that produces a first alternating magnetic field having a first position-calculating frequency by means of an external power supply; a second marker () including a magnetic induction coil () having a resonance frequency equal to the position-calculating frequency; a magnetic-field detection section () that is disposed outside a working region of the second marker () and that detects a magnetic field at the first position-calculating frequency; an extracting section () that extracts, from the detected magnetic field, a first detection-magnetic-field component having the first position-calculating frequency and having the same phase as the phase of the first alternating magnetic field; and a position/orientation analyzing section () that calculates at least one of the position and the orientation of the first marker () based on the intensity of the extracted first detection-magnetic-field component.