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公开(公告)号：US11269454B2
公开(公告)日：2022-03-08
申请号：US17177977
申请日：2021-02-17
申请人： Apple Inc.
发明人： Judd E. Reed , Ari Y. Benbasat
摘要： Structured noise from various aggressors can be suppressed to improve touch performance. A respective noise characteristic can be determined for each respective group of touch nodes (e.g., row, column) among multiple groups of touch nodes in a masked touch image. The respective noise characteristic can be removed from the corresponding respective group of touch nodes in the touch image. For example, a respective noise characteristic can be determined for each respective row and/or for each respective column in the masked touch image. The respective noise characteristic can be removed from the respective row and/or column in the unmasked touch image. In some examples, the determining and subtracting of the noise characteristic can be repeated iteratively within a window of time and/or until one or more noise criteria are met.
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公开(公告)号：US11157109B1
公开(公告)日：2021-10-26
申请号：US16786921
申请日：2020-02-10
申请人： Apple Inc.
发明人： Andrew William Shorten , Sai Zhang , Andreas Johannes Koeberl , Eric S. Winokur , Liqun Yang , Sabino Joseph Pietrangelo, II , Branislav Jovanovic , Ari Y. Benbasat
摘要： Techniques for rejecting apparent (but false) touches caused by objects such as water droplets located in areas with parasitic capacitive paths to ground are disclosed. To minimize these false touches, one or more guard conductors can be located in proximity to the housing and driven with a stimulation signal to shield objects from being capacitively coupled to ground through the housing. In some examples images of touch can be obtained from a non-bootstrapped or bootstrapped scan and also an extended bootstrapped scan wherein the guard conductor is driven with a stimulation signal that has the same characteristics as the stimulation signal being applied to the sensed touch nodes. In some examples, the results of the extended bootstrapped scan can be subtracted from the non-bootstrapped or bootstrapped scan to identify and reject apparent touches resulting from capacitive coupling to ground.
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公开(公告)号：US10928955B1
公开(公告)日：2021-02-23
申请号：US16107037
申请日：2018-08-21
申请人： Apple Inc.
发明人： Judd E. Reed , Ari Y. Benbasat
摘要： Structured noise from various aggressors can be suppressed to improve touch performance. A respective noise characteristic can be determined for each respective group of touch nodes (e.g., row, column) among multiple groups of touch nodes in a masked touch image. The respective noise characteristic can be removed from the corresponding respective group of touch nodes in the touch image. For example, a respective noise characteristic can be determined for each respective row and/or for each respective column in the masked touch image. The respective noise characteristic can be removed from the respective row and/or column in the unmasked touch image. In some examples, the determining and subtracting of the noise characteristic can be repeated iteratively within a window of time and/or until one or more noise criteria are met.
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公开(公告)号：US10048777B2
公开(公告)日：2018-08-14
申请号：US15052445
申请日：2016-02-24
申请人： Apple Inc.
发明人： Apexit Shah , Ari Y. Benbasat
IPC分类号： G06F3/0354 , G06F3/044
摘要： In one aspect, the present disclosure relates to a method and system for performing an adaptive make/break detection technique including adapting make and break thresholds based on the sum of all signals measured on display electrodes when the sum is lower than a respective filtered sum value. The filtered sum values are produced by a fast and slow filter, which correspond to the break and make thresholds respectively. By performing this method, the accuracy of detecting stylus touch-down and lift-off from a display can be improved, even in the presence of confounding factors such as variation in stylus manufacture, user grip, stylus angle, and water on the display.
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公开(公告)号：US09904379B2
公开(公告)日：2018-02-27
申请号：US15057058
申请日：2016-02-29
申请人： Apple Inc.
发明人： Blake R. Marshall , Apexit Shah , Ari Y. Benbasat , Li-Quan Tan , Priyanka Bhandari , Reza Nasiri Mahalati , Sarah M. Bolton
IPC分类号： G06F3/044 , G06F3/0354 , G06F3/041
CPC分类号： G06F3/03545 , G06F3/0418 , G06F3/044
摘要： A level of wear of a stylus tip can be estimated and in accordance with a determination that the level of wear of the stylus tip exceeds a threshold, the stylus input functionality of an electronic device can be disabled. The threshold can be set such that the stylus can be disabled before the stylus sensing performance degrades to a degree perceptible to a human and/or before exposing internal portions of the stylus that can scratch a touch screen. Additionally or alternatively, a notification can be provided to indicate to a user that the stylus tip should be replaced. In some examples, the estimated level of wear can also be used to provide warning notifications. Stylus tip wear can be estimated, for example, based on a detected total signal strength or based on an estimated total distance traversed by the stylus tip across a surface.
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公开(公告)号：US09690417B2
公开(公告)日：2017-06-27
申请号：US14284357
申请日：2014-05-21
申请人： Apple Inc.
CPC分类号： G06F3/044 , G06F3/0412 , G06F3/0416 , G06F2203/04106
摘要： The dynamic adjusting of the conditions for identifying inputs as touching a touch-sensitive device is discloses. In some examples, in addition to using a signal density make threshold to identify an input patch as touching the surface, a signal density stability threshold can be used to identify the input patch as touching the surface. In some examples, a weighted average of peak signal density contributions from recent identified touches can be computed to dynamically adjust the make threshold for new input patches. In other examples, a new input patch identified as associated with the same path as an earlier touch can have its “make” threshold dynamically adjusted based on the earlier touch without computing a weighted average.
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公开(公告)号：US09075481B2
公开(公告)日：2015-07-07
申请号：US13710318
申请日：2012-12-10
申请人： Apple Inc.
CPC分类号： G06F3/041 , G06F3/0425 , G06F3/044
摘要： A touch sensitive device that detects the occurrence of an electrostatic discharge event on the device by analyzing an acquired touch image for characteristics associated with the occurrence of an ESD event is provided. An acquired touch image is analyzed for characteristics that differentiate it from a touch image generated by a user input and are correlated with an expected touch image generated by an ESD event.
摘要翻译： 提供了一种触敏设备，其通过分析所获取的触摸图像来检测与ESD事件的发生相关的特性来检测设备上的静电放电事件的发生。 分析获取的触摸图像，以将其与由用户输入产生的触摸图像区分开，并与由ESD事件产生的预期触摸图像相关联的特性。
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公开(公告)号：US20140362001A1
公开(公告)日：2014-12-11
申请号：US14192536
申请日：2014-02-27
申请人： Apple Inc.
IPC分类号： G06F3/041
CPC分类号： G06F3/0416 , G06F3/041 , G06F3/044 , G06F3/0488 , G06F2203/04108
摘要： This relates to a method of extrapolating proximity information to generate a border column or row of touch nodes (also known as touch pixels) and then fitting an ellipse to the contact patch including the extrapolated border touch nodes. Additionally, a contact can be identified as a thumb based on both its major axis and its distance to an edge of the touch sensing surface.
摘要翻译： 这涉及一种外推邻近信息以产生触摸节点（也称为触摸像素）的边界列或行，然后将椭圆拟合到包括外推边框触摸节点的接触片。 此外，可以基于其长轴及其到触摸感测表面的边缘的距离将触点识别为拇指。
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公开(公告)号：US11620021B1
公开(公告)日：2023-04-04
申请号：US17020749
申请日：2020-09-14
申请人： Apple Inc.
发明人： Sai Zhang , Behrooz Shahsavari , Ari Y. Benbasat , Nima Ferdosi
摘要： Cross-coupling correction techniques on a touch sensor panel can be improved using machine learning models (particularly for touch sensor panels with relatively low signal-to-noise ratio). In some examples, the machine learning model can be implemented using a neural network. The neural network can receive a touch image and perform cross-coupling correction to mitigate cross-talk due to routing traces of the touch sensor panel. Mitigating cross-talk can improve touch sensing accuracy, reduce jitter, and/or reduce false positive touch detection.
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公开(公告)号：US10725595B2
公开(公告)日：2020-07-28
申请号：US15961742
申请日：2018-04-24
申请人： Apple Inc.
发明人： Stephen T. Schooley , Kendall L. Helbert , Ari Y. Benbasat , Clayton J. McCoy , Devon J. Rosner , Joshua A. Hoover , Sean M. Cole , Yufei Zhao , Zhao Liu , Judd Reed
摘要： An electronic device such as a portable electronic device may have display with a capacitive touch sensor. A cover may have a front portion and a rear portion that bend along a bend axis. The front portion may overlap the display when the cover is closed. Conductive structures such as a patterned conductive layer having elongated strips of conductive material separated by gaps or another predetermined pattern may be formed in the front portion of a cover or other portion of a cover that overlaps the display and capacitive touch sensor when the cover is closed. Control circuitry in the device can gather capacitance images with the touch sensor and can detect when the cover has transitioned from open to closed or from closed to open from whether the predetermined pattern becomes present or becomes absent in the capacitance images.
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