公开(公告)号：US09262029B2

公开(公告)日：2016-02-16

申请号：US14464524

申请日：2014-08-20

Applicant: Apple Inc.

Inventor： Steven P. Hotelling ,  Christoph H. Krah ,  Brian Q. Huppi

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04104

Abstract: A multipoint touch surface controller is disclosed herein. The controller includes an integrated circuit including output circuitry for driving a capacitive multi-touch sensor and input circuitry for reading the sensor. Also disclosed herein are various noise rejection and dynamic range enhancement techniques that permit the controller to be used with various sensors in various conditions without reconfiguring hardware.

Abstract translation: 本文公开了一种多点触摸表面控制器。 控制器包括集成电路，其包括用于驱动电容式多点触摸传感器的输出电路和用于读取传感器的输入电路。 本文还公开了各种噪声抑制和动态范围增强技术，其允许控制器在各种条件下与各种传感器一起使用，而无需重新配置硬件。

公开(公告)号：US09086750B2

公开(公告)日：2015-07-21

申请号：US14315162

申请日：2014-06-25

Applicant: Apple Inc.

Inventor： Christoph H. Krah

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/041 ,  G06F3/0416 ,  G06F3/044

Abstract: Determining a compensated phase matrix for a multi-stimulus demodulation process is provided. A first drive line of a multi-stimulus sensing system is selected, and a stimulation signal is transmitted on the selected drive line. A channel gain resulting from the stimulation signal is measured from a received sense signal resulting from the stimulation signal. The measured channel gain is compared with a known channel gain to obtain an individual phase compensation for the selected drive line. A compensated phase matrix is formed of the individual phase compensation values for multiple drive lines.

Abstract translation: 提供了用于多激励解调过程的补偿相位矩阵。 选择多刺激感测系统的第一驱动线，并且在所选择的驱动线上传送刺激信号。 从刺激信号产生的接收感测信号测量由刺激信号产生的通道增益。 将测量的信道增益与已知的信道增益进行比较，以获得所选驱动线路的单相补偿。 补偿相位矩阵由多个驱动线路的各个相位补偿值形成。

公开(公告)号：US08988390B1

公开(公告)日：2015-03-24

申请号：US13935333

申请日：2013-07-03

Applicant: Apple Inc.

Inventor： Christoph H. Krah ,  Marduke Yousefpor

IPC: G06F3/041

CPC classification number: G06F3/0416 ,  G06F1/08 ,  G06F3/044

Abstract: A touch input device configured to maintain system performance despite a changing master clock frequency is provided. The touch input device includes one or more agile clocking dynamic scaling engines that can detect changes in the frequency of the master clock and can scale parameters of the touch controller associated with touch detection such that time domain to maintain uniform system performance.

Abstract translation: 提供了尽管主时钟频率改变而保持系统性能的触摸输入设备。 触摸输入设备包括一个或多个敏捷计时动态缩放引擎，其可以检测主时钟频率的变化，并且可以缩放与触摸检测相关联的触摸控制器的参数，从而保持统一的系统性能。

公开(公告)号：US20140340345A1

公开(公告)日：2014-11-20

申请号：US14448893

申请日：2014-07-31

Applicant: Apple Inc.

Inventor： Minh-Dieu Thi VU ,  Thomas James Wilson ,  Christoph H. Krah

IPC: G06F3/041

CPC classification number: G06F3/0416 ,  G06F1/3262 ,  G06F3/03545 ,  G06F3/041 ,  G06F3/044 ,  G06F2203/04104

Abstract: A device that can autonomously scan a sensor panel is disclosed. Autonomous scanning can be performed by implementing channel scan logic. In one embodiment, channel scan logic carries out many of the functions that a processor would normally undertake, including generating timing sequences and obtaining result data; comparing scan result data against a threshold value (e.g., in an auto-scan mode); generating row count; selecting one or more scanning frequency bands; power management control; and performing an auto-scan routine in a low power mode.

Abstract translation: 公开了一种可自主扫描传感器面板的装置。 可以通过实现信道扫描逻辑来执行自主扫描。 在一个实施例中，信道扫描逻辑执行处理器通常将承担的许多功能，包括产生定时序列和获得结果数据; 将扫描结果数据与阈值进行比较（例如，以自动扫描模式）; 生成行数; 选择一个或多个扫描频带; 电源管理控制; 并以低功率模式执行自动扫描程序。

公开(公告)号：US20140320414A1

公开(公告)日：2014-10-30

申请号：US14329641

申请日：2014-07-11

Applicant: APPLE INC.

Inventor： Christoph H. Krah

IPC: G06F3/01 ,  G06F3/02

CPC classification number: G06F3/0325 ,  G01B11/00 ,  G01C3/085 ,  G01C3/12 ,  G01S7/4817 ,  G01S7/4861 ,  G01S7/4865 ,  G01S17/105 ,  G01S17/36 ,  G01S17/48 ,  G01S17/66 ,  G06F3/005 ,  G06F3/011 ,  G06F3/012 ,  G06F3/017 ,  G06F3/02 ,  G06F3/04815 ,  G06F3/04886

Abstract: A three-dimensional imaging and display system is provided in which user input is optically detected in an imaging volume by measuring the path length of an amplitude modulated scanning beam as a function of the phase shift thereof. Visual image user feedback concerning the detected user input is presented.

Abstract translation: 提供一种三维成像和显示系统，其中通过测量作为其相移的函数的调幅扫描光束的路径长度，在成像体积中光学检测用户输入。 介绍了关于检测到的用户输入的视觉图像用户反馈。

公开(公告)号：US12282596B2

公开(公告)日：2025-04-22

申请号：US18403599

申请日：2024-01-03

Applicant: Apple Inc.

Inventor： Erdrin Azemi ,  Ali Moin ,  Christoph H. Krah ,  Joseph Yitan Cheng ,  Kaan Emre Dogrusoz ,  Mohammad Yeke Yazdandoost

IPC: G06F3/01 ,  G06F1/3203 ,  G06F1/3234 ,  G06F1/3206 ,  G06F1/3287

Abstract: A head-mounted device having a plurality of electrodes configured to detect optical events such as the movement of one or more eyes or coarse eye gestures is disclosed. In some examples, the one or more electrodes can be coupled to dielectric elastomer materials whose shape can be changed to vary contact between a user of the head-mounted device and the one or more electrodes to ensure sufficient contact and electrode signal quality. In some examples, the one or more electrodes can be coupled to pressure sensors and control circuitry to monitor and adjust the applied pressure. In some examples, the optical events can be used as triggers for operating the device, including transitioning between operational power modes. In some examples, the triggers can invoke higher resolution sensing capabilities of the head-mounted device. In some examples, the electrodes can be used as an on-head detector to wake-up and/or unlock the device.

公开(公告)号：US12274149B2

公开(公告)日：2025-04-08

申请号：US18181928

申请日：2023-03-10

Applicant: Apple Inc.

Inventor： Christoph H. Krah ,  Mohammad Yeke Yazdandoost

IPC: H10K59/40 ,  G06F3/041 ,  G06F3/044 ,  H10K59/65

Abstract: A display may have an array of light-emitting pixels that display an image in an active area of the display. These light-emitting pixels may be visible light pixels such as red, green, and blue thin-film organic light-emitting diode pixels. The display may also have a border region that runs along a peripheral edge of the active area. The border region may be free of pixels that display image light, whereas the active area may be free of light detectors. A non-optical touch sensor such as a capacitive touch sensor may overlap the active area to gather touch input from the active area. The non-optical touch sensor may not overlap any portion of the border region. In the border region, an optical sensor formed from infrared light-emitting pixels and infrared light-sensing pixels or other optical sensing circuitry may serve as an optical touch sensor.

公开(公告)号：US12159007B1

公开(公告)日：2024-12-03

申请号：US17932634

申请日：2022-09-15

Applicant: Apple Inc.

Inventor： Bin Huang ,  Stanley B. Wang ,  Christoph H. Krah

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/32

Abstract: An electronic device including a touch screen (e.g., an integrated touch screen using chiplets) can be configured for low-noise reference voltage sampling and subsequent touch sensing using the sampled reference voltage. An integrated touch screen can include multiple regions, and each of the multiple regions can include multiple touch node electrodes. Chiplets can be configured to sample one or more reference voltage pins during an analog quiet time to obtain one or more sampled low-noise reference signals localized to each chiplet. The chiplets can then be configured to sense capacitance at some of or at each of the regions (e.g., using chiplets coupled to some of the touch node electrodes of each of the regions and configured to operate in a touch sensing configuration) using the one or more sampled low-noise reference signals.

公开(公告)号：US11941211B2

公开(公告)日：2024-03-26

申请号：US18185968

申请日：2023-03-17

Applicant: Apple Inc.

Inventor： William Matthew Pender Paul ,  Christoph H. Krah ,  Bin Huang ,  Stanley Bo-Ting Wang

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0445 ,  G06F3/0412 ,  G06F3/04164 ,  G06F3/04166 ,  G06F3/0446

Abstract: In some examples, a touch screen can include touch electrodes that can function as drive (Tx) electrodes and sense (Rx) electrodes during a touch sensing operation of the electronic device. The drive electrodes can include +Tx electrodes and −Tx electrodes that can receive drive signals that can have the same amplitude and frequency and opposite phases, for example. In some examples, the surface areas of the +Tx electrodes and the −Tx electrodes can be the same and the distances of the +Tx electrodes and −Tx electrodes from the Rx electrodes can be different. In some examples, the total charge coupled to a proximate or touching object can be zero, which can mitigate problems associated with ungrounded or poorly grounded objects in contact with the touch screen.

公开(公告)号：US11822747B2

公开(公告)日：2023-11-21

申请号：US17738915

申请日：2022-05-06

Applicant: Apple Inc.

Inventor： Mohammad Yeke Yazdandoost ,  Christoph H. Krah

IPC: G06F3/042 ,  G06F3/041

CPC classification number: G06F3/0421 ,  G06F3/04182 ,  G06F2203/04109

Abstract: An electronic device may have a touch sensitive display that is insensitive to the presence of moisture. An array of pixels in the display may be used to display images. A display cover layer may overlap the array of pixels. A light source may illuminate an external object such as a finger of a user when the object contacts a surface of the display cover layer. This creates scattered light that may be detected by an array of light sensors. The light source may supply light to an edge of the display cover layer at an angle that ensures total internal reflection within the display cover layer is sustained across the display cover layer even when the display cover layer is immersed in water or otherwise exposed to moisture.