Data processing: measuring – calibrating – or testing – Measurement system – Orientation or position
Reexamination Certificate
2008-01-21
2010-11-30
Wachsman, Hal D (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Orientation or position
C702S141000, C702S150000, C702S153000, C073S488000, C073S514160
Reexamination Certificate
active
07844415
ABSTRACT:
The instant invention discloses a method for an orientation measuring instrument to isolate and separate gravitational and non-gravitational components of acceleration from accelerometer measurements by using an ambient magnetic field, typically the earth's magnetic field, as a fixed rotation reference. Using magnetic field measurements, one can track changes in orientation of a device and use that information to determine the gravitation direction, during periods when acceleration measurements include non-gravitational acceleration combined with gravitational acceleration components. In addition to determining orientation, a method and associated instrument provide a non-gravity acceleration vector of the device.
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Bryant Tyler M.
Figaro Davy J.
Taylor Andrew T.
Fernandez & Associates LLP
PNI Corporation
Wachsman Hal D
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