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:
Mar. 13, 2012
Filed:
Nov. 30, 2010
Applicant:
Tadao Kikumoto, Hamamatsu, JP;
Inventor:
Tadao Kikumoto, Hamamatsu, JP;
Assignee:
Roland Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10H 1/32 (2006.01); G10H 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for accurately detecting key operation speed with a simple configuration in which a plurality of alternating signals, which have mutually differing phases, is supplied to transmission electrodes. From this, capacitance between reception electrodes and the transmission electrodes is changed by a key pressing operation, and the phases of the alternating signals induced in the reception electrodes are compared and discriminated.