Patent ID: 6829055
Filing Date: 2004-12-07
Classification: G01D

Abstract:
An angular position sensor assembly for use with a vehicle steering column assembly, comprising:a digitally encoded disk that includes a first axial end face, a second axial end face, an aperture for receiving a steering column shaft, a first set of data tracks that include one or more absolute angular position bits, and a second set of data tracks that include one or more error correction bits; an optical output device positioned adjacent said first axial end face such that said device is capable of emitting light that strikes at least one of said first set of data tracks and at least one of said second set of data tracks; an optical input device positioned adjacent said second axial end face such that said device is capable of receiving light from said optical output device through at least one of said first set of data tracks and at least one of said second set of data tracks, and; a signal output electrically coupled to said optical input device, wherein said angular position sensor assembly is capable of providing an angular position signal that is representative of both absolute angular position information and error correction information.