公开(公告)号：US10928881B2

公开(公告)日：2021-02-23

申请号：US15690565

申请日：2017-08-30

申请人： Apple Inc.

发明人： Taif A. Syed ,  Bingrui Yang ,  Christopher Tenzin Mullens ,  Sumant Ranganathan

IPC分类号： G06F3/041 ,  G06F1/3215 ,  G06F1/3234 ,  G06F3/044

摘要： An electronic device is disclosed. The electronic device can sense touch on its touch screen while in a sleep state in a manner that allows the electronic device to respond to certain touch inputs, while consuming less power due to touch sensing than while in an awake state. For example, sensing touch during the sleep state can allow the electronic device to wake (e.g., transition from the sleep state to the awake state) in response to detecting a certain touch input (e.g., a tap or other touch input) on its touch screen while in the sleep state. Various ways for the electronic device to sense touch during the sleep state are disclosed.

公开(公告)号：US20150227232A1

公开(公告)日：2015-08-13

申请号：US14194363

申请日：2014-02-28

申请人： Apple Inc.

发明人： Weijun YAO ,  Taif A. Syed ,  Yingxuan Li ,  Ahmad Al-Dahle

IPC分类号： G06F3/044

CPC分类号： G06F3/044 ,  G06F3/0418 ,  G06F3/047 ,  G06F2203/04101 ,  G06F2203/04112

摘要： A self-capacitance touch sensor panel including a plurality of touch electrodes and one or more sense circuits coupled to the touch electrodes. The touch sensor panel also includes at least one offset cancellation circuit coupled to at least one of the touch electrodes and configured to generate an offset cancellation signal to cancel an offset signal at the at least one touch electrode. In some examples, the offset cancellation signal can be an offset cancellation current to cancel an offset current. In some examples, the offset cancellation circuit comprises a variable resistor, and a magnitude of the offset cancellation current is based on a resistance of the variable resistor. In some examples, each touch electrode is coupled to an offset cancellation circuit. In other examples, a single offset cancellation circuit is shared by a plurality of touch electrodes.

摘要翻译： 一种自电容式触摸传感器面板，包括多个触摸电极和耦合到触摸电极的一个或多个感测电路。 触摸传感器面板还包括耦合到至少一个触摸电极的至少一个偏移消除电路，并被配置为产生偏移消除信号以抵消在至少一个触摸电极处的偏移信号。 在一些示例中，偏移消除信号可以是消除偏移电流的偏移消除电流。 在一些示例中，偏移消除电路包括可变电阻器，并且偏移消除电流的大小基于可变电阻器的电阻。 在一些示例中，每个触摸电极耦合到偏移消除电路。 在其他示例中，单个偏移消除电路由多个触摸电极共享。