公开(公告)号：US20130250640A1

公开(公告)日：2013-09-26

申请号：US13893239

申请日：2013-05-13

Applicant: Apple Inc.

Inventor： Brian Land ,  Steve P. Hotelling ,  Gus Pabon ,  Benjamin B. Lyon

IPC: H02M7/04

CPC classification number: H02M7/04 ,  G06F3/0416 ,  G06F3/044 ,  H02M7/06

Abstract: a An AC-to-DC adapter may be provided in order to increase the sensitivity of a touch-sensitive surface. Such an AC-to-DC adapter may include a rectifying circuit to rectify incoming AC signals. The rectifying circuit may take the form of a diode bridge network that includes four diode branches. Stabilization circuits may be provided in parallel with each diode branch in order to decrease the impedance of the diode bridge network during particular periods of operation. The stabilization circuits may be configured such that the impedance of the diode bridge network is substantially constant during all periods of operation. As a result, the impedance of the AC-to-DC adapter may be relatively constant during all periods of operation. In turn, the sensitivity of a touch-sensitive surface of a device being powered by such an AC-to-DC adapter may increase.

Abstract translation: 可以提供AC到DC适配器，以增加触敏表面的灵敏度。 这种AC到DC适配器可以包括整流电路来整流输入的AC信号。 整流电路可以采用包括四个二极管分支的二极管桥接网络的形式。 稳定电路可以与每个二极管分支并联提供，以便在特定工作周期期间减小二极管桥接网络的阻抗。 稳定电路可以被配置为使得在所有操作周期期间二极管桥接网络的阻抗基本上是恒定的。 结果，在所有操作周期期间，AC至DC适配器的阻抗可能相对恒定。 反过来，由这种AC-DC适配器供电的设备的触敏表面的灵敏度可能增加。

公开(公告)号：US09268429B2

公开(公告)日：2016-02-23

申请号：US14047960

申请日：2013-10-07

Applicant: Apple Inc.

Inventor： Steve Porter Hotelling ,  Wei Chen ,  Christoph Horst Krah ,  John Greer Elias ,  Wei Hsin Yao ,  John Z. Zhong ,  Andrew Bert Hodge ,  Brian Land ,  Willem den Boer

IPC: G09G3/36 ,  G06F3/041 ,  G06F3/044 ,  G02F1/1333

CPC classification number: G06F3/0412 ,  G02F1/13338 ,  G06F3/0416 ,  G06F3/044 ,  G09G3/3648 ,  G09G2300/0426 ,  G09G2300/0439 ,  G09G2300/0478 ,  Y10T29/49826

Abstract: Liquid crystal display (LCD) touch screens integrate touch sensing elements with display circuitry and may include in-plane-switching (IPS) LCDs. A method of operating the integrated touch sensing elements with the display circuitry includes dividing touch-sensing circuitry of the touch screen into a plurality of drive segments, each drive segment overlapping one or more display rows; updating the display at a predetermined refresh rate; stimulating the plurality of drive segments at a predetermined scan rate; and changing the sequence of stimulating the plurality of drive segments as required to prevent simultaneously stimulating a drive segment that overlaps a display row currently being updated.

Abstract translation: 液晶显示器（LCD）触摸屏将触摸感应元件与显示电路集成，并可能包括平面内切换（IPS）LCD。 使用显示电路操作集成触摸感测元件的方法包括将触摸屏的触摸感测电路划分为多个驱动段，每个驱动段与一个或多个显示行重叠; 以预定的刷新率更新显示; 以预定的扫描速率刺激所述多个驱动段; 以及根据需要改变刺激所述多个驱动段的顺序以防止同时刺激与当前正被更新的显示行重叠的驱动段。

公开(公告)号：US09325253B2

公开(公告)日：2016-04-26

申请号：US13893239

申请日：2013-05-13

Applicant: Apple Inc.

Inventor： Brian Land ,  Steve P. Hotelling ,  Gus Pabon ,  Benjamin B. Lyon

IPC: H02M7/04 ,  H02M7/06 ,  G06F3/041 ,  G06F3/044

CPC classification number: H02M7/04 ,  G06F3/0416 ,  G06F3/044 ,  H02M7/06

Abstract: An AC-to-DC adapter may be provided in order to increase the sensitivity of a touch-sensitive surface. Such an AC-to-DC adapter may include a rectifying circuit to rectify incoming AC signals. The rectifying circuit may take the form of a diode bridge network that includes four diode branches. Stabilization circuits may be provided in parallel with each diode branch in order to decrease the impedance of the diode bridge network during particular periods of operation. The stabilization circuits may be configured such that the impedance of the diode bridge network is substantially constant during all periods of operation. As a result, the impedance of the AC-to-DC adapter may be relatively constant during all periods of operation. In turn, the sensitivity of a touch-sensitive surface of a device being powered by such an AC-to-DC adapter may increase.