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:
Apr. 03, 2018
Filed:
Aug. 19, 2014
Advanced Silicon SA, Lausanne, CH;
Hussein Ballan, St.-Legier, CH;
Philippe Bauser, Divonne-les-Bain, FR;
Advanced Silicon SA, , CH;
Abstract
The invention concerns a capacitive touch system comprising: an active stylus () configured so as to continuously emit a signal a capacitive touch device () configured to be in a reset phase (), followed by a finger touch sensing phase (), the finger touches being sensed exclusively during the finger touch sensing phase (). The capacitive touch device () is configured to sense the signal from the active stylus () during the reset phase (). The capacitive touch device () comprises at least one charge sensor () comprising a charge sensor amplifier () comprising an input (CSi) and an output (csaout), and a switch (Sw) between this input (CSi) and this output (csaout). The charge sensor amplifier () is arranged for conveying the signal of the active stylus () through a non-zero resistance value (Ron) of the switch (Sw) during the reset phase ().