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. 01, 2019
Filed:
Sep. 29, 2016
Applicant:
Wacom Co., Ltd., Saitama, JP;
Inventors:
Yasuo Oda, Saitama, JP;
Susumu Yamada, Gunma, JP;
Assignee:
WACON CO., LTD., Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/0354 (2013.01); G06F 3/038 (2013.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); G06F 3/045 (2006.01);
U.S. Cl.
CPC ...
G06F 3/0383 (2013.01); G06F 3/03545 (2013.01); G06F 3/044 (2013.01); G06F 3/045 (2013.01); G06F 3/0416 (2013.01); G06F 2203/04106 (2013.01); G06F 2203/04111 (2013.01);
Abstract
A position indicator has a first electrode, an inverting amplifier and electrical isolation circuitry. The first electrode, in operation, receives an input signal from a capacitive touch panel and transmits a reference signal. The inverting amplifier has an input coupled to the first electrode, and, in operation, inverts and amplifies the input signal. The electrical isolation circuitry has an input coupled to an output of the inverting amplifier, and, in operation, generates the reference signal based on the inverted and amplified input signal.