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.:

US 8188420 B1

PDF
Full Text
Expired
Date of Patent:
May. 29, 2012

Filed:

Nov. 14, 2009
Applicant:

Wei Yan Lee, Penang, MY;

Inventor:

Wei Yan Lee, Penang, MY;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01D 5/34 (2006.01);
U.S. Cl.
CPC ...
Abstract

Disclosed are various embodiments of front-end analog circuitry for use in conjunction with optical encoders. Highly accurate analog output signals are provided by front-end analog circuitry in incremental or absolute motion encoders to interpolation circuitry, which is capable of providing high interpolation factor output signals having high timing accuracy. The disclosed interpolation circuits may be implemented using CMOS or BiCMOS processes without undue effort.


Find Patent Forward Citations

Lee, Wei. (2012). High resolution optical encoder systems having a set of light detecting elements each comprising a pair of complementary detectors (as amended) (U.S. Patent No. 8188420). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8188420

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