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:
Dec. 04, 2018
Filed:
Jan. 29, 2016
Applicants:
Lite-on Electronics (Guangzhou) Limited, Guangzhou, CN;
Lite-on Technology Corporation, Taipei, TW;
Inventors:
Chien-Chih Chen, New Taipei, TW;
Er-Hao Chen, New Taipei, TW;
Assignees:
LITE-ON ELECTRONICS (GUANGZHOU) LIMITED, Guangzhou, CN;
LITE-ON TECHNOLOGY CORPORATION, Taipei, TW;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 3/02 (2006.01); H01H 13/70 (2006.01); H03M 11/20 (2006.01); G06F 3/023 (2006.01);
U.S. Cl.
CPC ...
H03M 11/20 (2013.01); G06F 3/0202 (2013.01); G06F 3/023 (2013.01);
Abstract
A keyboard scanning circuit includes a plurality of switching elements, M scanning lines and N sensing lines. Each of the sensing lines has a common node extended to M transmission lines. A switching element is coupled where one of the transmission lines and one of the scanning lines intersects. Two scanning lines correspondingly coupled through two switching elements to two transmission lines extended from one sensing line are different from each other.