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    Wireless charging device with multi-tone data receiver
    1.
    发明授权
    Wireless charging device with multi-tone data receiver 有权

    公开(公告)号：US10770928B2

    公开(公告)日：2020-09-08

    申请号：US15895761

    申请日：2018-02-13

    Applicant: Apple Inc.

    Inventor： Moshe H. Malkin ,  Manu Agarwal ,  Alin I. Gherghescu

    IPC: H02J50/80 ,  H02J7/02 ,  H02J50/12

    Abstract: A wireless power transmitting device transmits wireless power signals modulated at a given power frequency to a wireless power receiving device using a wireless power transmitting coil. The wireless power receiving device may transmit data signals to the wireless power transmitting device. The wireless power transmitting device may include a data receiver that is coupled to the wireless power transmitting coil and that receives the transmitted data. The data receiver may include an input stage, bandpass filter circuitry, demodulator circuitry, and a data stream combiner. The bandpass filter circuitry may include at least two bandpass filter circuits for passing through signals at the power frequency and some harmonic of the power frequency. The demodulator circuitry may extract amplitude and phase information from the bandpass filtered signals and to generate multiple demodulated data streams. The data stream combiner may correlate the demodulated data streams and combine the correlated data streams.

    Systems and methods for measuring resistive sensors
    2.
    发明授权
    Systems and methods for measuring resistive sensors 有权

    公开(公告)号：US10006828B2

    公开(公告)日：2018-06-26

    申请号：US14749571

    申请日：2015-06-24

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  John Stephen Smith ,  Sumant Ranganathan

    IPC: G01L25/00 ,  G01L1/22 ,  G06F3/041

    CPC classification number: G01L25/00 ,  G01L1/2281 ,  G06F3/0414 ,  G06F3/0418

    Abstract: Systems and methods for accurately and precisely measuring the resistance of a resistive sensor of a matched resistive sensor pair disposed on opposite surfaces of a substrate. Certain embodiments include coupled each sensor of the matched resistive sensors to a thermally-isolated pair of reference resistors contained within an integrated circuit so as to form a Wheatstone bridge. A controller associated with the integrated circuit can adjust the resistance of the thermally-isolated pair of reference resistors until the ratio of resistances matches to the ratio of resistances between the sensors of the matched pair.

    Common pixel correction for sensor panels
    3.
    发明授权
    Common pixel correction for sensor panels 有权

    公开(公告)号：US09880664B2

    公开(公告)日：2018-01-30

    申请号：US14864351

    申请日：2015-09-24

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  Jason C. Hu ,  Dhaval Patel ,  Shahrooz Shahparnia ,  Sumant Ranganathan

    IPC: G06F3/041 ,  G06F3/044

    CPC classification number: G06F3/0418 ,  G06F3/0414 ,  G06F3/044 ,  G06F2203/04106

    Abstract: Noise in sensor panel measurements can be reduced using a common pixel correction algorithm. Noise can be introduced into touch or force sensor panel measurements, for example, by circuitry of a transmit (Tx) section or a receive (Rx) section coupled to one or more sensing nodes of a sensor panel. For example, a digital-to-analog converter in the transmit section or an analog-to-digital converter in the receive section can introduce low-frequency correlated noise. Additionally, transmit and receive sections can introduce uncorrelated noise into the system. Reference nodes, coupled between Tx and Rx sections, can sense correlated and uncorrelated noise from the Tx and Rx sections. The noise measured at reference nodes can be subtract from signals measured at other sensing nodes coupled to the same Rx channel. The measurement at the reference node can be scaled using a scaling parameter to account for differences between reference nodes and sensing nodes.

    Systems and Methods for Measuring Resistive Sensors
    5.
    发明申请
    Systems and Methods for Measuring Resistive Sensors 有权
    用于测量电阻式传感器的系统和方法

    公开(公告)号：US20160377501A1

    公开(公告)日：2016-12-29

    申请号：US14749571

    申请日：2015-06-24

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  John Stephen Smith ,  Sumant Ranganathan

    IPC: G01L25/00 ,  G01L1/18

    CPC classification number: G01L25/00 ,  G01L1/2281 ,  G06F3/0414 ,  G06F3/0418

    Abstract: Systems and methods for accurately and precisely measuring the resistance of a resistive sensor of a matched resistive sensor pair disposed on opposite surfaces of a substrate. Certain embodiments include coupled each sensor of the matched resistive sensors to a thermally-isolated pair of reference resistors contained within an integrated circuit so as to form a Wheatstone bridge. A controller associated with the integrated circuit can adjust the resistance of the thermally-isolated pair of reference resistors until the ratio of resistances matches to the ratio of resistances between the sensors of the matched pair.

    Abstract translation: 用于准确和精确地测量布置在基板的相对表面上的匹配电阻传感器对的电阻传感器的电阻的系统和方法。 某些实施例包括将匹配的电阻式传感器的每个传感器耦合到集成电路中包含的热隔离的一对参考电阻器，以便形成惠斯通电桥。 与集成电路相关联的控制器可以调节热隔离的一对参考电阻器的电阻，直到电阻比与匹配对的传感器之间的电阻比匹配。

    Reducing noise in a force signal in an electronic device
    6.
    发明授权
    Reducing noise in a force signal in an electronic device 有权

    公开(公告)号：US10296123B2

    公开(公告)日：2019-05-21

    申请号：US14716659

    申请日：2015-05-19

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  John Stephen Smith

    IPC: G06F3/041 ,  G06F3/044

    Abstract: A force sensing device can be included in a display. Noise produced by various sources can be injected into the force signals produced by the force sensing device. Example noise sources include, but are not limited to, the display, Johnson or Thermal noise from the force sensing device, system noise, and magnetically-coupled or background noise produced by ambient light sources. A sampling scheme that includes one or more noise cancelling techniques can be employed to reduce the amount of noise in the force signals.

    Operating multiple functions in a display of an electronic device
    7.
    发明授权
    Operating multiple functions in a display of an electronic device 有权

    公开(公告)号：US10282014B2

    公开(公告)日：2019-05-07

    申请号：US15025275

    申请日：2013-09-30

    Applicant: APPLE INC.

    Inventor： Christopher J. Butler ,  Peter W. Richards ,  Christian M. Sauer ,  Manu Agarwal

    IPC: G06F3/041 ,  G06F3/044

    Abstract: A system can include a display, a first device, and a second device all operatively connected to a controller. The first and second devices each use or share at least a portion of the display area. The controller is adapted to transmit during a pixel refresh time period of the display a first signal that is received by the first device. The first sync signal indicates a first time period in which a first operation can be performed in the first device. The controller is also adapted to transmit a second sync signal that is received by the second device indicating a second time period in which a second operation can be performed in the second device. The second time period can be during the pixel refresh time period or outside of the pixel refresh time period.

    Operating Multiple Functions in a Display of an Electronic Device
    10.
    发明申请
    Operating Multiple Functions in a Display of an Electronic Device 审中-公开
    在电子设备显示中操作多种功能

    公开(公告)号：US20160216833A1

    公开(公告)日：2016-07-28

    申请号：US15025275

    申请日：2013-09-30

    Applicant: APPLE INC.

    Inventor： Christopher J. Butler ,  Peter W. Richards ,  Christian M. Sauer ,  Manu Agarwal

    IPC: G06F3/041 ,  G06F3/044

    CPC classification number: G06F3/0416 ,  G06F3/0412 ,  G06F3/044 ,  G06F2203/04104 ,  G06F2203/04105

    Abstract: A system can include a display, a first device, and a second device all operatively connected to a controller. The first and second devices each use or share at least a portion of the display area. The controller is adapted to transmit during a pixel refresh time period of the display a first signal that is received by the first device. The first sync signal indicates a first time period in which a first operation can be performed in the first device. The controller is also adapted to transmit a second sync signal that is received by the second device indicating a second time period in which a second operation can be performed in the second device. The second time period can be during the pixel refresh time period or outside of the pixel refresh time period.

    Abstract translation: 系统可以包括显示器，第一设备和全部可操作地连接到控制器的第二设备。 第一和第二装置各自使用或共享显示区域的至少一部分。 控制器适于在显示器的像素刷新时间周期期间发送由第一设备接收的第一信号。 第一同步信号指示可以在第一设备中执行第一操作的第一时间段。 控制器还适于发送由第二设备接收的指示可以在第二设备中执行第二操作的第二时间段的第二同步信号。 第二时间段可以在像素刷新时间段期间或像素刷新时间周期之外。

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