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:
Jun. 11, 1996
Filed:
Apr. 27, 1990
Applicant:
Inventors:
Hiroaki Ono, Osaka, JP;
Yoshiki Taketa, Osaka, JP;
Mikio Nozu, Yamatokouriyama, JP;
Hiroshi Senda, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
36470913 ; 364D / ;
Abstract
A key input device includes first and second key input electrodes being close to each other and being accessible by a finger of an operator. First and second signal input electrodes oppose the first and second key input electrodes respectively. A first signal is applied to the first signal input electrode. A second signal is applied to the second signal input electrode. The first signal and the second signal have different phases.