公开(公告)号：AU2012216455B2

公开(公告)日：2013-11-21

申请号：AU2012216455

申请日：2012-08-27

Applicant: APPLE INC

Inventor： KRAH CHRISTOPHE HORST ,  WHITE KEVIN J ,  BI YAFEI

IPC: G06F3/00

Abstract: Reducing or eliminating the effects of noise that can be generated by a power system of a touch screen device, such as a gate line voltage system that applies voltage to gate lines of the touch screen, is provided. In one example, a power supply, such as a charge pump, can be disabled during active touch sensing, such that noise from the charge pump is not generated during touch sensing. In some examples, a voltage regulator can help to maintain the gate voltage level at or above a desired threshold. In some cases, noise entering the touch sensing system can have a lasting effect on noise-sensitive components, even after the noise source is disabled. In these cases, a post-noise stabilizing system can be included to stabilize, reset, etc., noise-sensitive components of the touch sensing system, which can help to reduce or eliminate the lasting effect of noise. c~co c~)a ~ U) ou E -CD> U) LaLz I-cDiCZ

公开(公告)号：AU2012216455A1

公开(公告)日：2013-04-11

申请号：AU2012216455

申请日：2012-08-27

Applicant: APPLE INC

Inventor： KRAH CHRISTOPHE HORST ,  WHITE KEVIN J ,  BI YAFEI

IPC: G06F3/00

Abstract: Reducing or eliminating the effects of noise that can be generated by a power system of a touch screen device, such as a gate line voltage system that applies voltage to gate lines of the touch screen, is provided. In one example, a power supply, such as a charge pump, can be disabled during active touch sensing, such that noise from the charge pump is not generated during touch sensing. In some examples, a voltage regulator can help to maintain the gate voltage level at or above a desired threshold. In some cases, noise entering the touch sensing system can have a lasting effect on noise-sensitive components, even after the noise source is disabled. In these cases, a post-noise stabilizing system can be included to stabilize, reset, etc., noise-sensitive components of the touch sensing system, which can help to reduce or eliminate the lasting effect of noise. c~co c~)a ~ U) ou E -CD> U) LaLz I-cDiCZ