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:
Oct. 14, 2003
Filed:
Nov. 15, 2000
Kanya Matsumoto, Tokyo, JP;
Jiro Nakazono, Yamagata, JP;
Other;
Abstract
There are provided microphones A, B arranged at least any two different locations of edge portions of a touch panel for sensing a ultrasonic signal propagated through a space, an input pen containing a piezoelectric loudspeaker G, for oscillating a ultrasonic wave that is output from the piezoelectric loudspeaker G, and a touch position sensor for calculating a coordinate of a touch position P by calculating distances between the microphones A, B and the touch position P of the input pen on the touch panel based on the ultrasonic wave sensed by the microphones A, B, whereby the microphones A, B have a sound collecting directivity characteristic in response to fitted positions of the edge portions of the touch panel