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:
Sep. 08, 2015
Filed:
Feb. 28, 2013
Acs Co., Ltd., Daegu, KR;
Jee Hoon Kim, Cupertino, CA (US);
Hyoung Sup Shin, Seongnam-Si, KR;
ACS CO., LTD., Daegu, KR;
Abstract
A keypad with a plate and distinct keys that move relative to the plate to generate an acoustic signal for acoustic pulse recognition (APR). Each key represents an input value and is structured to contact the plate at a region smaller than an upper surface of the key where a finger or a thumb comes into touch. The contact region of the plate coming into contact with an individual key is small relative the upper surface of the key, and hence, acoustic signals generated in response to the touch of the same key has less variance compared to acoustic signals generated in response to a direct touch of the plate by a finger or a thumb. As a result, the localization of the touch using APR can be more accurate compared to direct touch of the plate by a figure or a thumb.