Matches 1 - 24 out of 24
Match Document Document Title
7433728 Dynamic metal immunity by hysteresis  
Apparatus is provided for tracking an object in a body of a patient in the presence of an interfering article. A set of one or more radiators are adapted to generate an energy field at a...
7432810 Radio frequency tags for use in a motion tracking system  
Small radio frequency tags for use in a motion capture system include a power source, circuitry for generating radio frequency identification signals, an antenna for transmitting the signals, and...
7414571 Low frequency asset tag tracking system and method  
An apparatus and method for low frequency asset tracking includes a low frequency transmitter tag associated with a cargo container or other high value commodity, a plurality of receivers that...
EP1950892A1 A user interface based on magnetic induction  
The present invention relates to the field of wireless data communication, to the field of user interfaces and to the field of magnetic field based distance, position and orientation measurement....
7397364 Digital wireless position sensor  
A method is provided for tracking an object, including positioning a radio frequency (RF) driver to radiate an RF driving field toward the object, and fixing to the object a wireless transponder...
7355561 Systems and methods for providing images  
Systems and methods for providing images are disclosed. An exemplary embodiment of the system for providing images includes a first image display device for displaying a first image at a first...
7321228 Detection of metal disturbance in a magnetic tracking system  
A method for tracking an object includes producing energy fields at a plurality of different frequencies in a vicinity of the object, and receiving signals that are generated at a location of the...
7307595 Near field location system and method  
Near field signal properties are used to determine a location by utilizing two magnetic antennas arranged so that the null axes are perpendicular and lie in a plane of interest, such as the...
7298314 Near field electromagnetic positioning system and method  
A system and method for electromagnetic position determination utilizing a calibration process. For calibration, a transmitter is positioned at multiple locations in an area of interest and...
7292026 Signal conditioning system for inductive position sensor  
An apparatus and a method for providing an output signal correlated with a part position for a moveable part over a positional range, the apparatus includes a transmitter coil, the transmitter coil...
7276897 Inductive position sensor  
An inductive position sensor for position sensing includes a transmitter coil and a receiver coil, the receiver coil generating a receiver signal when the transmitter coil is excited by an...
7251025 Method and apparatus for obtaining position data relating to a probe in the ear canal  
A method for obtaining position data relating to a probe in the ear canal whereby a probe is inserted into the ear canal, the method further comprising the steps of:—determine the distance from...
7206067 Method and apparatus for obtaining geometrical data relating to the ear canal of the human body  
A method and apparatus for obtaining geometrical data relating to the internal surface of the ear canal and/or ear whereby a probe having a light emitting distal portion is inserted into the ear...
7191759 Inductive sensor for vehicle electronic throttle control  
An apparatus for allowing electronic engine speed control comprises a transmitter coil, a receiver coil providing a receiver signal when the transmitter coil is excited due to an inductive coupling...
7158754 Electromagnetic tracking system and method using a single-coil transmitter  
Certain embodiments of the present invention provide a system and method for electromagnetic tracking using a single-coil transmitter. The system includes a single coil transmitter emitting a...
7096148 Magnetic tracking system  
The present invention provides an electromagnetic tracking system that includes a field generator and a field sensor arranged to generate and detect, respectively, an electromagnetic field. Both...
7015859 Electromagnetic tracking system and method using a three-coil wireless transmitter  
Certain embodiments of the present invention provide a system and method for electromagnetic tracking using a three-coil wireless transmitter. The electromagnetic tracking system includes an...
7009561 Radio frequency motion tracking system and method  
A radio frequency (RF) motion capture system includes stationary sensor receivers, one or more transmitter marker tags on one or more objects to be tracked within a capture zone, at least one...
6980921 Magnetic tracking system  
The present invention provides an electromagnetic tracking system that includes a field generator and a field sensor arranged to generate and detect, respectively, an electromagnetic field. Both...
6963301 System and method for near-field electromagnetic ranging  
A system for measuring distance between a first locus and a second locus includes: (a) at least one beacon device; a respective beacon device of the at least one beacon device being situated at the...
6831603 Motion tracking system and method  
A method for tracking objects within a three-dimensional capture zone includes placing at least four sensors around the capture zone. A stationery reference tag is placed within the capture zone....
6762600 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation employing a modulated signal  
A bounding box or volume of interest is flooded with a modulated AC electromagnetic signal from a source. Different types of modulated signals may be used, including single-tone AM and FM. One or...
6624626 Method and apparatus for electromagnetic position and orientation tracking with distortion compensation employing modulated signal  
A modulated signal (e.g., single tone FM or AM) and DSP spectral and phase analysis is used to enhance the performance of an AC magnetic tracker. The algorithm allows distinguishing between the...
6553326 Errors in systems using magnetic fields to locate objects  
A process detects distortions to magnetic location or orientation determinations. The process includes measuring a plurality of magnetic field values, determining one of a probe's location and a...
Matches 1 - 24 out of 24