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:
Nov. 30, 2010
Filed:
Jun. 14, 2006
Shu Tomiya, Tokyo, JP;
Shu Tomiya, Tokyo, JP;
NEC Viewtechnology, Ltd., Tokyo, JP;
Abstract
The present invention aims to provide an electronic pen that is able to prevent the reflection of an ultrasonic wave. An electronic pen according to the present invention has: a housing having a longitudinal axis and a write side tip along the longitudinal axis; at least an ultrasonic wave transmitter, the ultrasonic wave transmitter being arranged near the write side tip of the housing; and a controller for detecting a sensor orientation and for controlling transmission of the ultrasonic wave. The sensor orientation is an index that shows a rotational orientation of the housing about the longitudinal axis, the rotational orientation being directed at an ultrasonic wave sensor for receiving the ultrasonic wave that is transmitted from the ultrasonic wave transmitter. The controller selectively activates a part of the ultrasonic wave transmitter such that the ultrasonic wave is transmitted from the orientation which is directed to the sensor orientation.