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:
Mar. 17, 2020
Filed:
Jan. 23, 2019
Futaba Corporation, Mobara-shi, Chiba-ken, JP;
Terukazu Sugimoto, Mobara, JP;
Takashi Muguruma, Mobara, JP;
Hiroyuki Tanaka, Mobara, JP;
Katsumi Takayama, Mobara, JP;
Cheng-Che Ho, New Taipei, TW;
Fumikazu Omoto, New Taipei, TW;
FUTABA CORPORATION, Mobara-Shi, Chiba-Ken, JP;
Abstract
A touch panel driving device, for sequentially performing scanning for selecting a pair of adjacent transmission signal lines and a pair of adjacent reception signal lines on a touch panel, includes a reception circuit configured to receive reception signals whose waveforms are changed by a capacitance change caused by an operation from the pair of reception signal lines of the touch panel and generate a detection value for monitoring a touch panel operation. The reception circuit generates the detection value by comparing levels of the reception signals from the reception signal lines while sequentially switching capacitance values of a measurement capacitance unit connected to one of the reception signal lines. The measurement capacitance unit includes capacitance units each forming a certain capacitance value by parallel connection or series connection of capacitors as a capacitance unit forming one capacitance value used for switching the capacitance value of the measurement capacitance unit.