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. 22, 1986
Filed:
Jul. 25, 1983
Dale LaPlante, Goleta, CA (US);
BEI Electronics, Inc., Santa Barbara, CA (US);
Abstract
An improved apparatus for generating an index signal in incremental encoders, wherein an index sequence of code elements is provided on the code disc, and the degree of registration between the index sequence and a mask sequence is detected, and further wherein the mask sequence and index sequence are configured so that there is maximum registration of the elements between the index sequence and mask sequence for the index position of the code disc and the degree of registration for all other angular positions of the code disc is at or below a predetermined background registration level, and so that the degree of registration for angular positions adjacent to the index or zero reference position is greater than zero and preferably no greater than the background registration level.