Coded data generation or conversion – Digital pattern reading type converter – Antiambiguity feature
Reexamination Certificate
2006-12-22
2008-08-19
Jeanglaude, Jean B (Department: 2819)
Coded data generation or conversion
Digital pattern reading type converter
Antiambiguity feature
C341S120000
Reexamination Certificate
active
07414547
ABSTRACT:
A calibration system for a rotary encoder comprises a rotary encoder disposed on a manufacturing substrate, the rotary encoder including an encoder pattern. The calibration system also includes a calibration pattern written onto a surface of the substrate, the calibration pattern comprising a ring that includes a grating pattern, where a radial position of the grating pattern corresponds to an error value of the position of the encoder pattern. A method of calibrating the errors of a rotary encoder and a method of fabricating a high resolution rotary encoder on a surface of a manufacturing substrate are also provided.
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Solak, H.H. & David, C.; “Patterning of Circular Structure Arrays with Interference Lithography”,Journal of Vacuum Science Technology B(Nov./Dec. 2003); vol. 21, No. 6; pp. 2883-2887.
Aguirre Luis A.
Biyikli Levent
Wang Wei
3M Innovative Properties Company
Jeanglaude Jean B
Rosenblatt Gregg H.
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