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公开(公告)号：US20170220193A1
公开(公告)日：2017-08-03
申请号：US15493481
申请日：2017-04-21
Applicant: Apple Inc.
Inventor： Christian M. Sauer , Peter W. Richards
Abstract: A capacitive sensing device can include multiple capacitive sensors. A first device controller is operatively connected to a portion of the capacitive sensors, while a second device controller is operatively connected to another portion of capacitive sensors. A common node or shield can be connected between the first device controller and the second device controller. Charging and discharging events of selected drive lines in the capacitive sensing device and/or of the common node or shield can be synchronized to reduce undesirable effects such as noise and/or to prevent the charging events and the discharging events from overlapping with each other. One or more reference capacitive sensors can be shared by the multiple device controllers.
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公开(公告)号：US09660646B1
公开(公告)日：2017-05-23
申请号：US14196710
申请日：2014-03-04
Applicant: Apple Inc.
Inventor： Christian M. Sauer , Peter W. Richards
IPC: H03K17/96
CPC classification number: G06F3/0416 , G06F3/03547 , G06F3/0412 , G06F3/0414 , G06F3/044 , G06F2203/04107 , H03K17/9622
Abstract: A capacitive sensing device can include multiple capacitive sensors. A first device controller is operatively connected to a portion of the capacitive sensors, while a second device controller is operatively connected to another portion of capacitive sensors. A common node or shield can be connected between the first device controller and the second device controller. Charging and discharging events of selected drive lines in the capacitive sensing device and/or of the common node or shield can be synchronized to reduce undesirable effects such as noise and/or to prevent the charging events and the discharging events from overlapping with each other. One or more reference capacitive sensors can be shared by the multiple device controllers.
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公开(公告)号：US11418191B2
公开(公告)日：2022-08-16
申请号：US17187467
申请日：2021-02-26
Applicant: Apple Inc.
Inventor： Christian M. Sauer , Peter W. Richards
IPC: G06F3/041 , G06F3/044 , H03K17/96 , G06F3/0354
Abstract: A capacitive sensing device can include multiple capacitive sensors. A first device controller is operatively connected to a portion of the capacitive sensors, while a second device controller is operatively connected to another portion of capacitive sensors. A common node or shield can be connected between the first device controller and the second device controller. Charging and discharging events of selected drive lines in the capacitive sensing device and/or of the common node or shield can be synchronized to reduce undesirable effects such as noise and/or to prevent the charging events and the discharging events from overlapping with each other. One or more reference capacitive sensors can be shared by the multiple device controllers.
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公开(公告)号：US10386970B2
公开(公告)日：2019-08-20
申请号：US14766639
申请日：2014-02-06
Applicant: Apple Inc.
Inventor： Jonah A. Harley , Peter W. Richards , Brian Q. Huppi , Omar Sze Leung , Dhaval N. Shah , Martin P. Grunthaner , Steven P. Hotelling , Miguel C Christophy , Vivek Katiyar , Tang Yew Tan , Christopher J. Butler , Erik G. de Jong , Ming Sartee , Rui Qiao , Steven J. Martisauskas , Storrs T. Hoen , Richard Hung Minh Dinh , Lee E. Hooton , Ian A. Spraggs , Sawyer I. Cohen , David A. Pakula
Abstract: A device configured to determine the location and magnitude of a touch on a surface of the device. The device includes a transparent touch sensor that is configured to detect a location of a touch on the transparent touch sensor. The device also includes a force-sensing structure disposed at the periphery of the transparent touch sensor. The force sensor includes an upper capacitive plate and a compressible element disposed on one side of the upper capacitive plate. The force sensor also includes a lower capacitive plate disposed on a side of the compressible element that is opposite the upper capacitive plate.
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公开(公告)号：US09990087B2
公开(公告)日：2018-06-05
申请号：US15025251
申请日：2013-09-28
Applicant: Apple Inc.
Inventor： Peter W. Richards
CPC classification number: G06F3/0418 , G06F3/0414 , G06F3/044 , G06F2203/04103 , G06F2203/04106 , H03K17/962 , H03K17/98 , H03K2217/9401 , H03K2217/960765
Abstract: A capacitive force sensor characterization system for calibrating a capacitive force sensor included in a personal electronic device. The capacitive force sensor includes a first capacitor plate coupled to a flexible element of the personal electronic device, which is coupled to the device housing, and a second capacitor plate coupled to an internal structural member of the personal electronic device. The internal structural member is not coupled to the housing during the characterization. The capacitive force sensor characterization system includes: a housing fixture adapted to hold the housing of the personal electronic device; a member fixture adapted to hold the internal structural member of the personal electronic device; a positioner coupled to at least one of the housing fixture or the member fixture; a position sensor; control circuitry electrically coupled to the positioner to provide a drive signal to the positioner; and a processor coupled to the first and second capacitor plates and the position sensor. The positioner is adapted to vary the gap width between the first and second capacitor plates in response to the drive signal. The position sensor is adapted to measure differences in the gap width between the capacitor plates relative to an initial gap width. The control circuitry is adapted to generate the drive signal following a test procedure such that, in response to the drive signal, the positioner varies the gap width between the capacitor plates from the initial gap width to at least two test gap widths. The processor adapted to determine: a capacitive sensor gain; a capacitive sensor offset; and an initial effective separation between the capacitor plates.
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Patent Agency Ranking
公开(公告)号：US09983715B2
公开(公告)日：2018-05-29
申请号：US14651216
申请日：2013-03-15
Applicant: Apple Inc.
Inventor： Sinan Filiz , Brian Q. Huppi , Kai Wang , Peter W. Richards , Vikram Garg
CPC classification number: G06F3/0414 , G06F1/1652 , G06F3/041 , G06F3/044 , G06F2203/04102 , G06F2203/04106 , H01L27/323 , H01L41/277
Abstract: Systems and methods related to piezoelectric based force sensing in touch devices are presented. One embodiment, for example, may take the form of an apparatus including a touch device having a deformable device stack and a piezoelectric element positioned relative to the deformable device stack such that the piezoelectric element deforms with the deformable stack. Deformation of the piezoelectric element generates a signal having a magnitude discernable as representative of an amount of force applied to the touch device.
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17.发明申请公开(公告)号：US20160209984A1
公开(公告)日：2016-07-21
申请号：US15025251
申请日：2013-09-28
Applicant: APPLE INC.
Inventor： Peter W. Richards
CPC classification number: G06F3/0418 , G06F3/0414 , G06F3/044 , G06F2203/04103 , G06F2203/04106 , H03K17/962 , H03K17/98 , H03K2217/9401 , H03K2217/960765
Abstract: A capacitive force sensor characterization system for calibrating a capacitive force sensor included in a personal electronic device. The capacitive force sensor includes a first capacitor plate coupled to a flexible element of the personal electronic device, which is coupled to the device housing, and a second capacitor plate coupled to an internal structural member of the personal electronic device. The internal structural member is not coupled to the housing during the characterization. The capacitive force sensor characterization system includes: a housing fixture adapted to hold the housing of the personal electronic device; a member fixture adapted to hold the internal structural member of the personal electronic device; a positioner coupled to at least one of the housing fixture or the member fixture; a position sensor; control circuitry electrically coupled to the positioner to provide a drive signal to the positioner; and a processor coupled to the first and second capacitor plates and the position sensor. The positioner is adapted to vary the gap width between the first and second capacitor plates in response to the drive signal. The position sensor is adapted to measure differences in the gap width between the capacitor plates relative to an initial gap width. The control circuitry is adapted to generate the drive signal following a test procedure such that, in response to the drive signal, the positioner varies the gap width between the capacitor plates from the initial gap width to at least two test gap widths. The processor adapted to determine: a capacitive sensor gain; a capacitive sensor offset; and an initial effective separation between the capacitor plates.
Abstract translation: 一种用于校准包含在个人电子设备中的电容式力传感器的电容式力传感器表征系统。 电容力传感器包括耦合到个人电子设备的柔性元件的第一电容器板，其耦合到器件外壳，以及耦合到个人电子设备的内部结构构件的第二电容器板。 在表征期间，内部结构构件不联接到壳体。 电容力传感器表征系统包括：适于保持个人电子设备的壳体的壳体固定装置; 适于保持个人电子设备的内部结构构件的构件夹具; 定位器，其耦合到所述壳体固定装置或所述构件固定装置中的至少一个; 位置传感器; 控制电路电耦合到定位器以向定位器提供驱动信号; 以及耦合到第一和第二电容器板和位置传感器的处理器。 定位器适于响应于驱动信号改变第一和第二电容器板之间的间隙宽度。 位置传感器适于测量电容器板之间的间隙宽度相对于初始间隙宽度的差异。 控制电路适于根据测试程序生成驱动信号，使得响应于驱动信号，定位器将电容器板之间的间隙宽度从初始间隙宽度改变为至少两个测试间隙宽度。 所述处理器适于确定：电容式传感器增益; 电容式传感器偏移; 以及电容器板之间的初始有效间隔。
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公开(公告)号：US20140092052A1
公开(公告)日：2014-04-03
申请号：US13631226
申请日：2012-09-28
Applicant: APPLE INC.
Inventor： Martin P. Grunthaner , Peter W. Richards , Romain A. Teil , Steven P. Hotelling
CPC classification number: G06F3/044 , G06F3/0416 , G06F3/0421 , G06F2203/04105 , G06F2203/04106 , G06F2203/04109
Abstract: Detecting force and touch using FTIR and capacitive location. FTIR determines applied force by the user's finger within infrared transmit lines on a touch device. A pattern of such lines determine optical coupling with the touch device. Capacitive sensing can determine (A) where the finger actually touches, so the touch device more accurately infers applied force; (B) whether finger touches shadow each other; (C) as a baseline for applied force; or (D) whether attenuated reflection is due to a current optical coupling, or is due to an earlier optical coupling, such as a smudge on the cover glass. If there is attenuated reflection without actual touching, the touch device can reset a baseline for applied force for the area in which that smudge remains. Infrared transmitters and receivers are positioned where they are not visible to a user, such as below a frame or mask for the cover glass.
Abstract translation: 使用FTIR和电容位置检测力和触摸。 FTIR确定用户手指在触摸设备上的红外传输线内施加的力。 这种线的图案决定了与触摸装置的光耦合。 电容感测可以确定（A）手指实际触摸的位置，因此触摸设备更准确地推断施加的力; （B）手指是否触碰彼此; （C）作为施加力的基准; 或者（D）是否衰减的反射是由于当前的光耦合引起的，或者是由于较早的光耦合，如盖玻片上的污迹。 如果在没有实际触摸的情况下存在衰减反射，则触摸装置可以重置针对该污迹保留的区域的施加力的基线。 红外发射器和接收器位于用户不可见的位置，例如用于盖玻片的框架或掩模下方。
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公开(公告)号：US10162444B2
公开(公告)日：2018-12-25
申请号：US14972041
申请日：2015-12-16
Applicant: Apple Inc.
Inventor： Charley T. Ogata , Martin P. Grunthaner , Michael B. Wittenberg , Peter W. Richards , Romain A. Teil , Steven P. Hotelling
IPC: G06F3/041 , G06F3/044 , G06F1/16 , G06F3/0354
Abstract: A force-sensitive device for electronic device. The force inputs may be detected by measuring changes in capacitance, as measured by surface flex of a device having a flexible touchable surface, causing flex at a compressible gap within the device. A capacitive sensor responsive to changes in distance across the compressible gap. The sensor can be positioned above or below, or within, a display element, and above or below, or within, a backlight unit. The device can respond to bending, twisting, or other deformation, to adjust those zero force measurements. The device can use measure of surface flux that appear at positions on the surface not directly the subject of applied force, such as when the user presses on a part of the frame or a surface without capacitive sensors.
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公开(公告)号：US10139959B2
公开(公告)日：2018-11-27
申请号：US15038972
申请日：2013-11-26
Applicant: Apple Inc.
Inventor： Christopher J. Butler , Martin P. Grunthaner , Peter W. Richards , Romain A. Teil , Sinan Filiz
Abstract: A method of calibrating a force sensor that includes an input surface and an array of sensing elements. The input has a number of test locations and is deformable under applied force. The force sensor is mounted in a predetermined test orientation. For each test location of the plurality of test locations on the input surface of the force sensor a predetermined test force to the test location. An element calibration value is measured for each sensing element of the array of sensing elements of the force sensor. An (x, y) deformation map of the input surface of the force sensor corresponding to the application of the predetermined test force to the test location is determined based on the measured element calibration values.
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