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    Noise Reduction for Touch Sensor System With Active Stylus
    11.
    发明申请
    Noise Reduction for Touch Sensor System With Active Stylus 有权
    触摸传感器系统的降噪功能

    公开(公告)号：US20160147319A1

    公开(公告)日：2016-05-26

    申请号：US14550784

    申请日：2014-11-21

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  Shahrooz Shahparnia ,  Vivek Pant

    IPC: G06F3/0354 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0418 ,  G06F2203/04107

    Abstract: A touch sensor may overlap a display. A transparent shield layer that is grounded around its edges may be interposed between the display and the touch sensor to help prevent noise from display data lines from reaching the touch sensor. The data lines may extend along a first dimension. The touch sensor may have first elongated electrodes that extend along the first dimension and second elongated electrodes that extend along a second dimension that is perpendicular to the first dimension. The second electrodes may be interposed between the first electrodes and the data lines. Pen present electrodes may be used to gather pen present data associated with a stylus on the touch sensor. Adjacent noise sensors may collect noise data that is removed from the pen present data.

    Abstract translation: 触摸传感器可能与显示器重叠。 围绕其边缘接地的透明屏蔽层可以介于显示器和触摸传感器之间，以帮助防止显示数据线的噪声到达触摸传感器。 数据线可以沿着第一维度延伸。 触摸传感器可以具有沿着第一尺寸延伸的第一细长电极和沿垂直于第一尺寸的第二尺寸延伸的第二细长电极。 第二电极可以介于第一电极和数据线之间。 笔当前电极可用于收集与触摸传感器上的触控笔相关联的笔存在数据。 相邻的噪声传感器可以收集从笔当前数据中去除的噪声数据。

    Temperature Compensation for Transparent Force Sensors
    12.
    发明申请
    Temperature Compensation for Transparent Force Sensors 有权
    透明力传感器的温度补偿

    公开(公告)号：US20160048266A1

    公开(公告)日：2016-02-18

    申请号：US14793987

    申请日：2015-07-08

    Applicant: Apple Inc.

    Inventor： John S. Smith ,  Manu Agarwal

    IPC: G06F3/041 ,  G01L1/22 ,  G01L25/00 ,  G06F3/045

    CPC classification number: G06F3/0418 ,  G01L1/18 ,  G01L1/2281 ,  G01L1/2293 ,  G01L25/00 ,  G06F3/0414

    Abstract: An optically transparent force sensor element compares a force reading from a first strain-sensitive film element with a second strain-sensitive film element, having a compliant and thermally conductive intermediate layer positioned therebetween to compensate for temperature changes. While in the idle state, the optically transparent force sensor can be periodically calibrated to account for additional changes in temperature.

    Abstract translation: 光学透明的力传感器元件将来自第一应变敏感膜元件的力读数与第二应变敏感膜元件进行比较，其具有位于其间的柔性导热中间层以补偿温度变化。 在处于空闲状态时，光学透明的力传感器可以周期性地校准以考虑温度的附加变化。

    Wireless Charging Device with Multi-tone Data Receiver
    14.
    发明申请
    Wireless Charging Device with Multi-tone Data Receiver 审中-公开

    公开(公告)号：US20180351392A1

    公开(公告)日：2018-12-06

    申请号：US15895761

    申请日：2018-02-13

    Applicant: Apple Inc.

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

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

    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.

    Touch, pen and force sensor operation with variable refresh displays
    15.
    发明授权
    Touch, pen and force sensor operation with variable refresh displays 有权

    公开(公告)号：US09880649B2

    公开(公告)日：2018-01-30

    申请号：US14500653

    申请日：2014-09-29

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  Christopher Tann ,  Brijesh Tripathi ,  Martin Paul Grunthaner

    IPC: G06F3/041 ,  G09G5/12

    CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F2203/04105 ,  G09G5/12 ,  G09G2310/04 ,  G09G2330/022 ,  G09G2340/0435 ,  G09G2354/00

    Abstract: Synchronization of display functions and various touch, stylus and/or force sensing functions for devices including a variable refresh rate (VRR) display is disclosed. In some examples, touch, stylus and/or force sensing functions can be synchronized with display frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display frames. In other examples, touch, stylus and/or force sensing functions can be synchronized with display sub-frames and a display refresh rate can be adjusted by extended blanking of the display for one or more display sub-frames. Pre-warning synchronization signals can be generated to prepare one or more scan controllers to implement the appropriate scan events during and after extended blanking periods. Latency between the scan results and the corresponding image on the display can be corrected in software and/or firmware by time-stamping scan results or by dropping scan results from uncompleted scans.

    Reducing Noise in a Force Signal in an Electronic Device
    17.
    发明申请
    Reducing Noise in a Force Signal in an Electronic Device 审中-公开
    降低电子设备中的力信号中的噪声

    公开(公告)号：US20160259465A1

    公开(公告)日：2016-09-08

    申请号：US14716659

    申请日：2015-05-19

    Applicant: Apple Inc.

    Inventor： Manu Agarwal ,  John Stephen Smith

    IPC: G06F3/041 ,  G06F3/044

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

    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.

    Abstract translation: 力感测装置可以包括在显示器中。 由各种来源产生的噪声可以被注入到由力感测装置产生的力信号中。 示例性噪声源包括但不限于来自力感测装置的显示器，Johnson或热噪声，系统噪声，以及由环境光源产生的磁耦合或背景噪声。 可以采用包括一个或多个噪声消除技术的采样方案来减少力信号中的噪声量。

    MID-FRAME BLANKING
    18.
    发明申请
    MID-FRAME BLANKING 审中-公开
    中框布局

    公开(公告)号：US20150355762A1

    公开(公告)日：2015-12-10

    申请号：US14296105

    申请日：2014-06-04

    Applicant: Apple Inc.

    Inventor： Brijesh Tripathi ,  Manu Agarwal ,  Peter F. Holland

    IPC: G06F3/041 ,  H04N3/24 ,  G06T1/20

    CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F2203/04101 ,  G06T1/20 ,  H04N3/24 ,  H04N2101/00

    Abstract: Systems, apparatuses, and methods for performing mid-frame blanking. A first portion of a frame is driven to a display and then a first mid-frame blanking interval is generated. Following this first mid-frame blanking interval, a second portion of the frame is driven to the display, followed by a second mid-frame blanking interval, followed by a third portion of the frame, and so on. Any number of mid-frame blanking intervals may be introduced in a given frame. During each mid-frame blanking interval, touch sensing is performed to detect touch events on the screen for in-cell touch type displays. For displays with touch sensors electrically separated from the display common voltage layer, special sense scan steps are performed during mid-frame blanking intervals. By performing touch sensing or special sense scan steps during a frame rather than only at the end of a frame, the performance of touch sensing is improved.

    Abstract translation: 执行中帧消隐的系统，设备和方法。 帧的第一部分被驱动到显示器，然后产生第一中间帧消隐间隔。 在该第一中间帧消隐间隔之后，帧的第二部分被驱动到显示器，随后是第二中间帧消隐间隔，随后是帧的第三部分，等等。 可以在给定的帧中引入任何数量的中帧消隐间隔。 在每个中间帧消隐间隔期间，执行触摸感测以检测用于小区内触摸式显示的屏幕上的触摸事件。 对于具有与显示器公共电压层电气分离的触摸传感器的显示器，在中帧消隐间隔期间执行特殊感测扫描步骤。 通过在帧期间执行触摸感测或特殊感测扫描步骤，而不仅仅是在帧的结尾处，提高了触摸感测的性能。

    Wireless Charging Device with Multi-tone Data Receiver and Active Power Supply Noise Cancellation Circuitry
    20.
    发明申请
    Wireless Charging Device with Multi-tone Data Receiver and Active Power Supply Noise Cancellation Circuitry 审中-公开

    公开(公告)号：US20190181697A1

    公开(公告)日：2019-06-13

    申请号：US16184846

    申请日：2018-11-08

    Applicant: Apple Inc.

    Inventor： Moshe H. Malkin ,  Manu Agarwal ,  Brandon R. Garbus

    IPC: H02J50/80 ,  H02J50/12 ,  H02J7/02 ,  H04B5/00

    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 data receiver may further include a power supply noise cancellation circuit. The power supply noise cancellation circuit may include an input stage, a baseband filter, a window filter, a down-sampler, and a difference filter. The power supply noise cancellation circuit may be coupled to the data stream combiner and is configured to mitigate power supply noise interference in the received data.

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