Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
158 words
A hybrid motion tracker system for tracking motions of a person, comprising: a) a magnetic sensor mounted on a person; b) a fixed source of magnetic field; c) an optical source of light mounted on the person adjacent said magnetic sensor; d) an optical sensor located adjacent said fixed source of magnetic field; e) a control means for controlling operation of said fixed source of magnetic field and optical source, said control means activating said fixed source of magnetic field and said optical source, said magnetic sensor sensing said magnetic field and sending first signals to said control means indicative of position and orientation of a portion of the person to which said magnetic sensor is affixed, said control means concurrently activating said optical source of light, said optical sensor sensing light from said source of light and, responsive thereto, sending second signals to said control means indicative of, at least, position of said portion of said person.
Claim 2
Dependent Claim
158 words
A hybrid motion tracker system for tracking motions of a person, comprising: a) a magnetic sensor mounted on a person; b) a fixed source of magnetic field; c) an optical source of light mounted on the person adjacent said magnetic sensor; d) an optical sensor located adjacent said fixed source of magnetic field; e) a control means for controlling operation of said fixed source of magnetic field and optical source, said control means activating said fixed source of magnetic field and said optical source, said magnetic sensor sensing said magnetic field and sending first signals to said control means indicative of position and orientation of a portion of the person to which said magnetic sensor is affixed, said control means concurrently activating said optical source of light, said optical sensor sensing light from said source of light and, responsive thereto, sending second signals to said control means indicative of, at least, position of said portion of said person.
Claim 3
Dependent Claim
16 words
The system of claim 1, further wherein said magnetic sensor comprises three mutually orthogonal sensor coils.
Claim 4
Dependent Claim
32 words
The system of claim 2, wherein said source of magnetic field comprises three mutually orthogonal source coils, said control means being adapted to sequentially pulse said source coils one at a time.
Claim 5
Dependent Claim
14 words
The system of claim 1, wherein said optical source comprises an optical light source.
Claim 6
Dependent Claim
13 words
The system of claim 4, wherein said optical light source comprises a LED.
Claim 7
Dependent Claim
18 words
The system of claim 4, wherein said optical light source comprises three LEDs arranged in a triangular pattern.
Claim 8
Dependent Claim
24 words
The system of claim 1, including a plurality of magnetic sensors and a corresponding plurality of optical sources of light mounted on a person.
Claim 9
Dependent Claim
22 words
The system of claim 4, further wherein said control means includes means for sensing shadowing effects during operation of said optical sensor.
Claim 10
Dependent Claim
16 words
The system of claim 4, wherein said optical sensor comprises a plurality of position sensing detectors.
Claim 11
Dependent Claim
16 words
The system of claim 9, wherein each position sensing detector comprises a charge coupled device (CCD).
Claim 12
Dependent Claim
22 words
The system of claim 4, wherein position and orientation measured by the optical source and sensor comprise means for improving system accuracy.
Claim 13
Dependent Claim
23 words
The system of claim 4, wherein position and orientation measured by the optical source and sensor comprise means for improving system dynamic performance.