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:
Sep. 11, 2002
Tomohiko Yamamoto, Nara, JP;
Koji Fujiwara, Tenri, JP;
Keiichi Tanaka, Tenri, JP;
Naoto Inoue, Shiki-gun, JP;
Hideki Ichioka, Nabari, JP;
Tomohiko Yamamoto, Nara, JP;
Koji Fujiwara, Tenri, JP;
Keiichi Tanaka, Tenri, JP;
Naoto Inoue, Shiki-gun, JP;
Hideki Ichioka, Nabari, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
Input position is accurately detected. In an x-detection period of a non-display period, a source drive circuit simultaneously applies to all signal wiring lines a pulse of a peak value proportional to a distance from a gate drive circuit. A coordinate detection circuit obtains an x-coordinate on the basis of a voltage induced at a pen corresponding to the peak value (x-coordinate) of the applied pulse. In a y-detection period, a pulse generation circuit applies one pulse to a common line. The pen detects a potential variation in amplitude proportional to a distance (y-coordinate) from the source drive circuit, generated approximately simultaneously on all the signal wiring lines via a capacitance. The coordinate detection circuit obtains the y-coordinate similarly to the case of x-coordinate detection.