The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 29, 2005

Filed:

Dec. 16, 2003
Applicants:

Daniel Aaron Leverett, Lexington, KY (US);

John Thomas Writt, Lexington, KY (US);

Inventors:

Daniel Aaron Leverett, Lexington, KY (US);

John Thomas Writt, Lexington, KY (US);

Assignee:

Lexmark International Inc., Lexington, KY (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G05B019/33 ;
U.S. Cl.
CPC ...
Abstract

A method of controlling a rotational velocity of a rotatable member during initialization of an analog encoder unit that generates a channel A signal and a channel B signal, includes the steps of processing the channel A signal and the channel B signal to generate a feedback signal, an integrity of the feedback signal being maintained even if only one of the channel A signal and channel B signal is functional; and controlling the rotational velocity of the rotatable member during the initialization of the analog encoder unit based on the feedback signal generated by processing the channel A signal and the channel B signal.


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