Method and system of detecting eccentricity and up/down...

Details Method and system of detecting eccentricity and up/down... Method and system of detecting eccentricity and up/down...

2007-12-04

2007-12-04

Monbleau, Davienne (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S231130, C250S231180, C356S616000, C356S617000

Reexamination Certificate

active

11240934

ABSTRACT:
A system and method of measuring a rotational motion of a code wheel measures a rotational movement of the code wheel including an error component due to a non-rotational movement of the code wheel; measures the non-rotational movement of the code wheel; and produces an error-corrected measurement of the rotational movement of the code wheel by using the measured non-rotational movement of the code wheel to cancel the error component of the measured rotational movement of the code wheel. A signal can be produced indicating a need for maintenance when the non-rotational movement of the code wheel exceeds a threshold.

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UK Search Report dated Nov. 10, 2006 involving UK counterpart application No. GB0619290.0.

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