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1. (WO2002004895) OPTICAL POSITION SENSOR AND POSITION DETERMINATION METHOD

Pub. No.:    WO/2002/004895    International Application No.:    PCT/US2001/041269
Publication Date: Jan 17, 2002 International Filing Date: Jul 6, 2001
IPC: G01D 5/244
G01D 5/245
Applicants: FLUIDSENSE CORPORATION
Inventors: CARLISLE, Jeffrey, A.
KAPLAN, Alvaro
KIRKMAN, JR., John, M.
Title: OPTICAL POSITION SENSOR AND POSITION DETERMINATION METHOD
Abstract:
A method of position measurement by processing at least two phase displaced signals and by selecting one signal for position measurement at a given position point. Specifically, the two phase displaced signals are quadrature signals and the selected signal has a more linear wafeform slope relative to time at a given position point than the non-selected signal.