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:
Jul. 27, 1999
Filed:
Apr. 09, 1997
Applicant:
Inventor:
George Barbehenn, Vancouver, WA (US);
Assignee:
Hewlett-Packrd Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M / ; G01D / ;
U.S. Cl.
CPC ...
341 11 ; 25023117 ;
Abstract
A position encoder system is provided, the system employing a medium having a track with incremental markings which define an embedded reference position identifier. Upon movement of the medium, a sensor detects passage of the incremental markings, each such marking being indicative of a predetermined movement of the medium. The sensor also detects the embedded reference position identifier, and correspondingly, provides a recognizable index pulse for use in determining an absolute position of the medium.