公开(公告)号：US20140267075A1

公开(公告)日：2014-09-18

申请号：US13831318

申请日：2013-03-14

Applicant: APPLE INC.

Inventor： Shahrooz SHAHPARNIA ,  John Greer Elias

IPC: G06F3/0354

CPC classification number: G06F3/03545 ,  G06F3/0416 ,  G06F3/044

Abstract: A touch input device configured to detect stylus signals generated by an external stylus is provided. The touch input device includes a plurality of stylus signal detectors that can receive the stylus signal and estimate the start and end time of the stylus signal in order to facilitate windowed demodulation of signal. The touch input device also includes circuitry to determine which of the plurality of detectors is most likely to have received the stylus signal and based on that determination can demodulate the signal and extract data embedded within the stylus signal.

Abstract translation: 提供了一种被配置为检测由外部触控笔产生的触针信号的触摸输入装置。 触摸输入装置包括多个触针信号检测器，其可以接收触针信号并且估计触笔信号的开始和结束时间，以便于窗口化的信号解调。 触摸输入设备还包括确定多个检测器中哪一个最可能已经接收到触笔信号的电路，并且基于该确定可以对信号进行解调并提取嵌入在触笔信号内的数据。

公开(公告)号：US20140085211A1

公开(公告)日：2014-03-27

申请号：US13624674

申请日：2012-09-21

Applicant: APPLE INC.

Inventor： Shahrooz SHAHPARNIA ,  Marduke YOUSEFPOR

IPC: G06F3/041

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F3/047 ,  G06F2203/04101 ,  G06F2203/04108 ,  G06F2203/04112

Abstract: Touch sensors for detecting touch and hover events are disclosed. The touch sensors can include multiple split sense lines and/or multiple split drive lines. The split sense lines and/or split drive lines can include uniformly or non-uniformly spaced prongs. In some examples, the prongs can include uniformly or non-uniformly spaced extensions extending away from the prongs. The prongs and/or extensions can be interleaved with prongs and/or extensions of adjacent drive lines or sense lines.

Abstract translation: 公开了用于检测触摸和悬停事件的触摸传感器。 触摸传感器可以包括多个分离感测线和/或多个分离驱动线。 分离的感测线和/或分裂驱动线可以包括均匀或非均匀分隔的叉。 在一些示例中，插脚可以包括远离插脚延伸的均匀或非均匀间隔的延伸部。 插脚和/或扩展可以与相邻驱动线或感测线的插脚和/或延伸部交错。

公开(公告)号：US20170344174A1

公开(公告)日：2017-11-30

申请号：US15169679

申请日：2016-05-31

Applicant: Apple Inc.

Inventor： Vivek PANT ,  Moshe MALKIN ,  Shahrooz SHAHPARNIA

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/03545 ,  G06F3/044

Abstract: Position-based sensing methods and systems can be used to transmit data from an input device to a touch-sensitive device. For example, the touch sensing system may perform one or more coarse input device sub-scans to determine a coarse location of the input device. The coarse location can be used to select one or more touch sensors (or sensor channels) to sample for decoding data encoded in the stimulation signals from the input device. During one or more fine input device sub-scans, the touch sensing system can determine a fine location of the input device and decode the data from the input device sampled from the selected touch sensors (or sensor channels).

公开(公告)号：US20170293372A1

公开(公告)日：2017-10-12

申请号：US15485698

申请日：2017-04-12

Applicant: Apple Inc.

Inventor： Leah GUM ,  Wayne C. WESTERMAN ,  Seyed Mohammad NAVIDPOUR ,  Shahrooz SHAHPARNIA

IPC: G06F3/0354 ,  G06F3/038 ,  G06F3/044

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

Abstract: In one aspect, the present disclosure relates to a method including determining which sense lines are potentially corrupted based on touch image information, measuring a sense signal on each sense line, and applying a trained best compensation factor to the measured sense signal on potentially corrupted sense lines in order to produce a corrected sense signal. The corrected sense signal eliminates active stylus signal that has cross-coupled to a touch contact (e.g., a finger or conductive stylus) and thereby mitigates errors in stylus location due to cross-coupled signal.

公开(公告)号：US20170090668A1

公开(公告)日：2017-03-30

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.

公开(公告)号：US20160179281A1

公开(公告)日：2016-06-23

申请号：US15057035

申请日：2016-02-29

Applicant: Apple Inc.

Inventor： Christoph H. KRAH ,  Shahrooz SHAHPARNIA ,  Steven P. HOTELLING

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047 ,  G06F3/038 ,  G06F3/0354

CPC classification number: G06F3/0416 ,  G06F3/03545 ,  G06F3/0383 ,  G06F3/041 ,  G06F3/044 ,  G06F3/045 ,  G06F3/047

Abstract: A method for receiving data from an input device to a computing device through a touch interface. The method includes detecting an input device, synchronizing with the input device by receiving a position signal and activating an input device scan of the touch interface, receiving a data signal from the input device through at least one of a sense line or a drive line of the touch interface, and scanning the touch interface for a touch input by applying a stimulation signal to the at least one drive line and analyzing the at least one sense line.

Abstract translation: 一种通过触摸界面从输入设备接收数据到计算设备的方法。 该方法包括检测输入设备，通过接收位置信号和激活触摸界面的输入设备扫描与输入设备同步，通过至少一个感测线或驱动线从输入设备接收数据信号 触摸界面，以及通过将刺激信号施加到所述至少一个驱动线并分析所述至少一个感测线，来扫描触摸界面以进行触摸输入。

公开(公告)号：US20160162102A1

公开(公告)日：2016-06-09

申请号：US14869982

申请日：2015-09-29

Applicant: Apple Inc.

Inventor： Shahrooz SHAHPARNIA ,  Christopher Tenzin MULLENS ,  Martin Paul GRUNTHANER ,  Adam GEBOFF

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/044 ,  G06F1/3215 ,  G06F1/3262 ,  G06F3/0416 ,  G06F2203/04101

Abstract: Power consumption of touch sensing operations for touch sensitive devices can be reduced by implementing a coarse scan (e.g., banked common mode scan) to coarsely detect the presence or absence of an object touching or proximate to a touch sensor panel and the results of the coarse scan can be used to dynamically adjust the operation of the touch sensitive device to perform or not perform a fine scan (e.g., targeted active mode scan). In some examples, the results of the coarse scan can be used to program a touch controller for the next touch sensing frame to idle when no touch event is detected or to perform a fine scan when one or more touch events are detected. In some examples, the results of the coarse scan can be used to abort a scheduled fine scan during the current touch sensing frame when no touch event is detected.

Abstract translation: 可以通过实施粗略扫描（例如，共享共模扫描）来粗略地检测触摸或接近触摸传感器面板的物体的存在或不存在，并且粗略地检测触摸感测装置的触摸感测操作的结果 扫描可用于动态调整触敏设备的操作以执行或不执行精细扫描（例如，目标主动模式扫描）。 在一些示例中，当没有检测到触摸事件时，可以使用粗略扫描的结果来编程用于下一触摸感测帧的触摸控制器空闲，或者当检测到一个或多个触摸事件时执行精细扫描。 在一些示例中，当没有检测到触摸事件时，粗略扫描的结果可以用于在当前触摸感测帧期间中止预定的精细扫描。

公开(公告)号：US20160154522A1

公开(公告)日：2016-06-02

申请号：US15014884

申请日：2016-02-03

Applicant: Apple Inc.

Inventor： Shahrooz SHAHPARNIA ,  Marduke YOUSEFPOR

IPC: G06F3/041 ,  G06F3/044 ,  G06F3/047

CPC classification number: G06F3/0416 ,  G06F3/044 ,  G06F3/047 ,  G06F2203/04101 ,  G06F2203/04108 ,  G06F2203/04112

Abstract: Touch sensors for detecting touch and hover events are disclosed. The touch sensors can include multiple split sense lines and/or multiple split drive lines. The split sense lines and/or split drive lines can include uniformly or non-uniformly spaced prongs. In some examples, the prongs can include uniformly or non-uniformly spaced extensions extending away from the prongs. The prongs and/or extensions can be interleaved with prongs and/or extensions of adjacent drive lines or sense lines.

Abstract translation: 公开了用于检测触摸和悬停事件的触摸传感器。 触摸传感器可以包括多个分离感测线和/或多个分离驱动线。 分离的感测线和/或分裂驱动线可以包括均匀或非均匀分隔的叉。 在一些示例中，插脚可以包括远离插脚延伸的均匀或非均匀间隔的延伸部。 插脚和/或扩展可以与相邻驱动线或感测线的插脚和/或延伸部交错。

公开(公告)号：US20150338952A1

公开(公告)日：2015-11-26

申请号：US14286949

申请日：2014-05-23

Applicant: Apple Inc.

Inventor： Shahrooz SHAHPARNIA ,  Marduke YOUSEFPOR

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: Coded integration of a self-capacitance array to improve signal-to-noise ratio (SNR) of self-capacitance measurements is disclosed. A composite measurement of the self-capacitance of a plurality of electrodes can be measured for a plurality of integration periods. The composite measurements can include weighted contributions of charge from the plurality of electrodes, the weighting corresponding to a code. In some examples, the weighted contribution can include positive contributions integrated by a first integrator circuit and negative contributions integrated by a second integrator circuit. The composite measurements of the self-capacitance for the plurality of integration periods can be decoded to extract the self-capacitance measurement for the electrodes. The SNR for the self-capacitance measurements can therefore be improved by increasing the number of samples during the total integration period without requiring dedicated sensing circuitry for the electrodes.

Abstract translation: 公开了自电容阵列的编码积分以提高自电容测量的信噪比（SNR）。 可以在多个积分周期中测量多个电极的自电容的复合测量。 复合测量可以包括来自多个电极的电荷的加权贡献，对应于代码的加权。 在一些示例中，加权贡献可以包括由第一积分器电路集成的积极贡献和由第二积分器电路集成的负贡献。 可以对多个积分周期的自电容的复合测量进行解码，以提取电极的自电容测量。 因此，可以通过在总积分期间增加采样数而不需要用于电极的专用感测电路来改善自电容测量的SNR。