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. 12, 2019
Filed:
Jul. 12, 2018
Microvision, Inc., Redmond, WA (US);
Chao Chen, Redmond, WA (US);
Microvision, Inc., Redmond, WA (US);
Abstract
Laser scanning devices and methods are described that provide for improved touch detection. The laser scanning devices and methods determine if an object is touching a touch surface by determining if a halo region having corresponding locally high amplitude signals is proximate to the object. The presence of such a halo region can confirm that the object is touching surface and not just hovering above the surface. Furthermore, the presence of the halo region can confirm object touching even for objects having significantly different sizes. As one example, the determined presence of the halo region can be used to reliably determine that a human finger is touching the surface even though human fingers can have significantly different sizes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile