Patent · US Active

Optical encoder capable of identifying absolute positions and operating method thereof

US10871385B2 · kind B2 · utility

37Cited by

4References

20Claims

0Family size

Assignee

PIXART IMAGING INC. · TW

Inventors

Boon How Kok · Singapore, SG
Keen-Hun Leong · Bukit Mertajam, MY
Ching-Geak Chan · Bukit Mertajam, MY
Chiang-Hee Lim · Bukit Mertajam, MY
Chu-Leik Ho · Bukit Mertajam, MY
Hsin-Chia Chen · Baoshan, TW
Yen-Min Chang · Baoshan, TW

Key dates

Filing date	Jan 2, 2019
Grant date	Dec 22, 2020
Priority date	—
Expiry date	Feb 13, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH04N23/56
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The present disclosure is related to an optical encoder which is configured to provide precise coding reference data by feature recognition technology. To apply the present disclosure, it is not necessary to provide particular dense patterns on a working surface. The precise coding reference data can be generated by detecting surface features of the working surface.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.