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:
Jan. 09, 2007
Filed:
Dec. 03, 2003
Hiroyasu Okada, Hyogo, JP;
Hiroto Inoue, Kyoto, JP;
Masaki Sawada, Osaka, JP;
Tamotsu Yamamoto, Hyogo, JP;
Hiroyasu Okada, Hyogo, JP;
Hiroto Inoue, Kyoto, JP;
Masaki Sawada, Osaka, JP;
Tamotsu Yamamoto, Hyogo, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An input device of the present invention includes a substantially ring-shaped resistor including two pair of electrodes projecting along a Y direction and an X direction orthogonal to the Y direction, a substantially ring-shaped conductor facing the resistor across a clearance, and a controller for successively applying a voltage between the pair of electrodes along the X direction and between the pair of electrodes along the Y direction when the resistor and the conductor contact each other due to pressing. The controller determines an angle which a pressed position makes with high precision, from one of a resultant vector of vectors that are directed in the respective X and Y directions and detected based on voltages output from the conductor when the voltage is applied in the X and Y directions, and a mean value of angles detected based on the conductor's output voltages.