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.
Patent No.:
Date of Patent:
Nov. 25, 2003
Filed:
Nov. 27, 2000
Roger G. Markham, Webster, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
The present invention provides a method for referencing the position of a moving component. The method includes generating a first signal in response to the relative movement between a first sensor and encoder strip having a repeating pattern of fiducial marks, the first signal including a plurality of transitions corresponding to the repeating pattern; generating a second signal in response to the relative movement of a second sensor and the encoder strip, the second signal including a plurality of transitions corresponding to the repeating pattern; estimating a position of the moving component based upon the transitions within the first sensor signal; and identifying a direction of movement of the moving component in response to the first and second signals.