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:
Jul. 11, 2006
Filed:
Jul. 15, 2003
Shigeo Takagi, Ageo, JP;
Nobumitsu Taniguchi, Ageo, JP;
Kazuhiro Okada, Ageo, JP;
Wacoh Corporation, Saitama, JP;
Abstract
An efficient rotational-operation-quantity input device suitable to be built into a small electrical appliance is provided. An operational force applied by an operator is input in time series as a coordinate value (x, y) in an XY two-dimensional rectangular coordinate system by a two-dimensional force sensor, and is converted into a coordinate value (r, θ) by a polar-coordinate converting sectionWhen a value r of the coordinate value (r, θ) obtained in time series is larger than a predetermined threshold rt, an operation-quantity recognizing sectionrecognizes the coordinate value (r, θ) as a significant coordinate value, and, when the value θ generates a variation Δθ exceeding a predetermined threshold θt with respect to a value 'θ before' immediately therebefore during a period during which a significant coordinate value (r, θ) is obtained continuously, it recognizes a value corresponding to the variation Δθ as an operation quantity indicating a rotation.