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. 09, 2013
Filed:
Sep. 30, 2009
Bryce T. Osoinach, Phoenix, AZ (US);
Tsukasa Hoshi, Sendai, JP;
Toshiaki Ito, Sendai, JP;
Katsuaki Morishita, Sendai, JP;
Eiji Shikata, Sendai, JP;
Keiji Tenaka, Kurokawa-gun, JP;
Craig R. Teegarden, Pittsburgh, PA (US);
Bryce T. Osoinach, Phoenix, AZ (US);
Tsukasa Hoshi, Sendai, JP;
Toshiaki Ito, Sendai, JP;
Katsuaki Morishita, Sendai, JP;
Eiji Shikata, Sendai, JP;
Keiji Tenaka, Kurokawa-gun, JP;
Craig R. Teegarden, Pittsburgh, PA (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
Embodiments include capacitive touch sensors and methods for configuring capacitive touch sensors. A capacitive touch sensor embodiment includes an analog-to-digital converter (ADC) and a controller. The ADC receives an analog voltage signal from an electrode, and samples the analog voltage signal to produce a plurality of digital values. The controller performs a first charging process by supplying the electrode with a first charging current for a first charging interval, and the controller determines, based on the digital values, whether a first electrode voltage value meets a criteria. If not, the controller performs a configuration process that results in setting a second charging current and a second charging interval for the electrode which, in response to performing a second charging process, results in a second electrode voltage value that meets the criteria.