Angle detector with self-calibration capability

Details Angle detector with self-calibration capability Angle detector with self-calibration capability

2006-12-05

2006-12-05

Bennett, G. Bradley (Department: 2859)

Geometrical instruments

Miscellaneous

Light direction

C702S163000

Reexamination Certificate

active

07143518

ABSTRACT:
An angle detector with self-calibration capability has a number of first scale read heads and one second scale read head around the periphery of a single scale disk and includes means for performing self-calibration by determining measurement differences between the second scale read head and the individual first scale read heads and calculating the average thereof.

REFERENCES:
patent: 4449191 (1984-05-01), Mehnert
patent: 4530155 (1985-07-01), Burkhardt et al.
patent: 5301434 (1994-04-01), Imaizumi
patent: 6828783 (2004-12-01), Schroter et al.
patent: 6928386 (2005-08-01), Hasser
patent: 2004/0107586 (2004-06-01), Nakamura et al.
patent: 10-300053 (1998-11-01), None
patent: 2003-262518 (2003-09-01), None

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