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. 25, 2012
Filed:
Mar. 31, 2008
Toshihiro Kamii, Osaka, JP;
Yoshinori Kikui, Osaka, JP;
Toshihiro Kamii, Osaka, JP;
Yoshinori Kikui, Osaka, JP;
Kyocera Corporation, Kyoto, JP;
Abstract
Disclosed is a key operation device for detecting an open/close state of key switches using row and column signal lines. The key switches include: 1to 4key switches each corresponding to a key for inputting a direction; and ten-key switches correspond one-to-one to keys of a ten-key pad. The 1and 2key switches are both coupled to one of the row signal lines and each to a different one of two of the column signal lines. The 3and 4key switches are both coupled to another one of the row signal lines and each coupled to a different one of the two column signal lines to which the 1and 2key switches are respectively coupled. None of the ten-key switches is coupled to either of the two row signal lines to which the 1and 2or 3and 4key switches are coupled.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile