Method and apparatus for calibrating an incremental count of...

Details Method and apparatus for calibrating an incremental count of... Method and apparatus for calibrating an incremental count of...

2005-05-17

2005-05-17

Barlow, John (Department: 2863)

Data processing: measuring, calibrating, or testing

Measurement system

Speed

C250S231130, C318S282000

Reexamination Certificate

active

06895355

ABSTRACT:
An operator controller10controls a motor12via a motor controller (11). The motor (12), in turn, selectively controls movement of an object (such as a movable barrier) along a substantially predetermined path. An incremental movement sensor (13) monitors movement of the object by monitoring, in one embodiment, movement associated with operation of the motor (12). At the same time, a passpoint event generator (15) generates at least some passpoint events that are uniquely identifiable. When a given predetermined passpoint event is detected, the incremental movement sensor activity is potentially recalibrated.

REFERENCES:
patent: 4888531 (1989-12-01), Hormann
patent: 6051947 (2000-04-01), Lhotak et al.
patent: 6400112 (2002-06-01), Fitzgibbon et al.
patent: 20030164061 (2003-09-01), Hormann

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