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公开(公告)号：US09582105B2
公开(公告)日：2017-02-28
申请号：US15057035
申请日：2016-02-29
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Shahrooz Shahparnia , Steven P. Hotelling
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。
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公开(公告)号：US09483141B2
公开(公告)日：2016-11-01
申请号：US14704885
申请日：2015-05-05
Applicant: Apple Inc.
Inventor： Steven P. Hotelling , Christoph H. Krah , Marduke Yousefpor , Thomas James Wilson
CPC classification number: G06F3/0416 , G06F3/044 , G06F2203/04104 , G09G5/18
Abstract: A multi-stimulus controller for a multi-touch sensor is formed on a single integrated circuit (single-chip). The multi-stimulus controller includes a transmit oscillator, a transmit signal section that generates a plurality of drive signals based on a frequency of the transmit oscillator, a plurality of transmit channels that transmit the drive signals simultaneously to drive the multi-touch sensor, a receive channel that receives a sense signal resulting from the driving of the multi-touch sensor, a receive oscillator, and a demodulation section that demodulates the received sense signal based on a frequency of the receive oscillator to obtain sensing results, the demodulation section including a demodulator and a vector operator.
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公开(公告)号：US09383843B2
公开(公告)日：2016-07-05
申请号：US14455604
申请日：2014-08-08
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Minh-Dieu Thi Vu , Thomas James Wilson
CPC classification number: G06F3/0418 , G06F1/3203 , G06F1/3262 , G06F3/041 , G06F3/0416 , G06F3/044 , G06F2203/04104
Abstract: A system and method for autonomously scanning a sensor panel device is disclosed. A sensor panel processor can be disabled after a first predetermined amount of time has elapsed without the sensor panel device sensing any events. One or more system clocks can also be disabled to conserve power. While the processor and one or more system clocks are disabled, the sensor panel device can periodically autonomously scan the sensor panel for touch activity. If one or more results from the autonomous scans exceed a threshold, the sensor panel device re-enables the processor and one or more clocks to actively scan the sensor panel. If the threshold is not exceeded, the sensor panel device continues to periodically autonomously scan the sensor panel without intervention from the processor. The sensor panel device can periodically perform calibration functions to account for any drift that may be present in the system.
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公开(公告)号：US09098286B2
公开(公告)日：2015-08-04
申请号：US14600973
申请日：2015-01-20
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Thomas James Wilson
CPC classification number: G06F1/3287 , G06F1/3215 , G06F1/3262 , G06F1/3296 , G06F3/041 , G06F3/0416 , Y02D50/20
Abstract: Power management system or a touch controller can include a transmit section for transmitting stimulation signals to an associated touch sensor panel to drive the panel, where the touch controller can selectively adjust the transmit section to reduce power during the transmission. The touch controller can also include a receive section for receiving touch signals resulting from the driving of the panel, where the touch controller can selectively adjust the receive section to reduce power during the receipt of the touch signals. The touch controller can also include a demodulation section for demodulating the received touch signals to obtain touch event results, where the touch controller can selectively adjust the demodulation section to reduce power during the demodulation of the touch signals. The touch controller can also selectively reduce power below present low levels during idle periods. The touch controller can be incorporated into a touch sensitive device.
Abstract translation: 电源管理系统或触摸控制器可以包括用于将刺激信号发送到相关联的触摸传感器面板以驱动面板的发送部分，其中触摸控制器可以选择性地调整发送部分以减少传输期间的功率。 触摸控制器还可以包括用于接收由面板驱动产生的触摸信号的接收部分，其中触摸控制器可以选择性地调整接收部分以在接收触摸信号期间降低功率。 触摸控制器还可以包括用于解调接收到的触摸信号以获得触摸事件结果的解调部分，其中触摸控制器可以选择性地调整解调部分以在解调触摸信号期间降低功率。 触摸控制器还可以在空闲时段期间选择性地降低低于当前低电平的功率。 触摸控制器可以结合到触敏设备中。
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15.发明授权公开(公告)号：US11972070B1
公开(公告)日：2024-04-30
申请号：US17933068
申请日：2022-09-16
Applicant: Apple Inc.
Inventor： William Paul , Christoph H. Krah , Stanley B. Wang , Yongjie Jiang
IPC: G06F3/041
CPC classification number: G06F3/0412 , G06F3/04164
Abstract: Mitigation techniques can be used to reduce noise generated by wireless communication circuitry (e.g., near-field communication circuitry) in an electronic device including a display, touch, and wireless communication circuitry. In some examples, a touch screen can have a backplane including a mesh of routing traces connected to an array of chiplets. In some examples, the chiplets can repeat signals to prevent the accumulation of noise induced by an NFC coil. In some examples, the ratio between vertical and horizontal resistances of routing traces can be configured to mitigate noise induced by the coil. In some examples, the routing traces of the mesh can be configured to share a common geometric centroid. In some examples, a plurality of routing traces can be routed in a twisted pair configuration. In some examples, the routing traces and chiplets can be routed to minimize traversal through regions of relatively high electromagnetic field.
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Patent Agency Ranking
公开(公告)号：US11823486B2
公开(公告)日：2023-11-21
申请号：US18123880
申请日：2023-03-20
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Mohammad Yeke Yazdandoost
IPC: G06V40/13 , H04N25/616 , H04N25/75 , H10K39/32
CPC classification number: G06V40/1318 , G06V40/13 , H04N25/616 , H04N25/75 , H10K39/32
Abstract: A method of temperature compensation in an optical-fingerprint detection system includes acquiring a first reading associated with one or more pixels of an array. The first reading is a baseline reading. The method further includes acquiring a second reading associated with the one or more pixels of the array. The second reading includes the baseline plus a signal. Producing a temperature compensated signal reading by subtracting the first reading from the second reading. The array is an optical-fingerprint array, and each pixel of the array is coupled to a readout circuit via a pixel switch. The method includes row-based and frame-based schemes and a blind pixel scheme. Readout circuit improvements including multiplexed analog front-end (AFE), charge magnifier with column charge offset compensation and a low-noise gate driver circuit are provided.
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17.发明授权公开(公告)号：US11675459B1
公开(公告)日：2023-06-13
申请号：US17934126
申请日：2022-09-21
Applicant: Apple Inc.
Inventor： Chang Yong Kang , Du Chen , Christoph H. Krah
IPC: G06F3/041 , G06F3/044 , G06F1/3234 , G06F1/3296
CPC classification number: G06F3/04184 , G06F1/3262 , G06F1/3296 , G06F3/0443 , G06F3/0446 , G06F3/044 , G06F2203/04107
Abstract: An electronic device can be configured to operate in a plurality of operating modes to generate various stimulation signals for touch sensing operations. Switching circuitry can selectively couple one or more stimulation circuits to touch stimulation circuitry to reduce electromagnetic interference generated during transitions between the plurality of operating modes. The electronic device can transition from a stimulation phase to a termination phase at an arbitrary time, unconstrained by integration time requirements of accompany touch sensing circuitry.
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公开(公告)号：US11636702B2
公开(公告)日：2023-04-25
申请号：US16711323
申请日：2019-12-11
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Mohammad Yeke Yazdandoost
Abstract: A method of temperature compensation in an optical-fingerprint detection system includes acquiring a first reading associated with one or more pixels of an array. The first reading is a baseline reading. The method further includes acquiring a second reading associated with the one or more pixels of the array. The second reading includes the baseline plus a signal. Producing a temperature compensated signal reading by subtracting the first reading from the second reading. The array is an optical-fingerprint array, and each pixel of the array is coupled to a readout circuit via a pixel switch. The method includes row-based and frame-based schemes and a blind pixel scheme. Readout circuit improvements including multiplexed analog front-end (AFE), charge magnifier with column charge offset compensation and a low-noise gate driver circuit are provided.
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公开(公告)号：US20220276738A1
公开(公告)日：2022-09-01
申请号：US17738912
申请日：2022-05-06
Applicant: Apple Inc.
Inventor： Mohammad Yeke Yazdandoost , Christoph H. Krah
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.
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公开(公告)号：US11353994B1
公开(公告)日：2022-06-07
申请号：US17188946
申请日：2021-03-01
Applicant: Apple Inc.
Inventor： Mohammad Yeke Yazdandoost , Christoph H. Krah
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.
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