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公开(公告)号：US11614839B2
公开(公告)日：2023-03-28
申请号：US16998456
申请日：2020-08-20
申请人： Apple Inc.
摘要： 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.
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公开(公告)号：US11086463B2
公开(公告)日：2021-08-10
申请号：US16134651
申请日：2018-09-18
申请人： Apple Inc.
发明人： Christoph H. Krah
摘要： A multi-modal touch controller configured to operate in different modes. In some examples, the multi-modal touch controller can be operated in a first mode corresponding to a guarded self-capacitance scan. In some examples, the multi-modal touch controller can be operated in a second mode corresponding to offset-compensated mutual capacitance scan. In some examples, the multi-modal controller can be operated in a third mode corresponding to a mutual and self-capacitance scan. The multi-modal touch controller can advantageously allow one touch sensing chipset to be used across different types of guarded touch sensor panels and across different modes of operation.
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公开(公告)号：US11079878B1
公开(公告)日：2021-08-03
申请号：US16926421
申请日：2020-07-10
申请人： Apple Inc.
发明人： Christoph H. Krah
摘要： Techniques for mitigating noise in a touch signal are disclosed. To reduce or eliminate noise in a touch signal, the touch activity can be filtered out of a touch signal, thus isolating the noise. In some examples, the noise is then provided to the non-inverting input port of a differential amplifier while the unfiltered touch signal is provided to the inverting input port of the differential amplifier. The noise, which is now common on both inputs, is automatically eliminated or reduced by the differential amplifier.
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公开(公告)号：US20210098537A1
公开(公告)日：2021-04-01
申请号：US16940192
申请日：2020-07-27
申请人： Apple Inc.
摘要： 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.
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公开(公告)号：US10852894B2
公开(公告)日：2020-12-01
申请号：US16581721
申请日：2019-09-24
申请人： Apple Inc.
IPC分类号： G06F3/044 , G02F1/1333 , G02F1/1343 , G06F3/041
摘要： A touch sensing system is disclosed. The touch sensing system includes a guard signal generation chip operating in a first power domain referenced to a first voltage, the guard signal generation chip configured to generate a guard signal. A touch sensing chip operates in a second power domain, different from the first power domain, referenced to the guard signal, the touch sensing chip configured to sense touch at one or more touch electrodes included in a touch sensor panel operating in the second power domain referenced to the guard signal, and the touch sensing chip a different chip than the guard signal generation chip. A voltage regulator is configured to selectively regulate a voltage of the guard signal at the touch sensing chip.
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公开(公告)号：US10175830B2
公开(公告)日：2019-01-08
申请号：US14870815
申请日：2015-09-30
申请人： Apple Inc.
发明人： Taif A. Syed , Kingsuk Brahma , Christoph H. Krah
摘要： A method for pre-charging a display panel may include simultaneously charging the display panel that displays image data and receives one or more touch inputs via a first voltage source and a capacitor that provides a first voltage to the display panel via a second voltage source. The first voltage is associated with receiving the one or more touch inputs, and the display panel and the capacitor are simultaneously charged for a first amount of time. The method may then include charging the display panel via the capacitor after the first amount of time for a second amount of time and charging the display panel via the second voltage source after the second amount of time for a third amount of time.
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公开(公告)号：US09958960B2
公开(公告)日：2018-05-01
申请号：US14522573
申请日：2014-10-23
申请人： APPLE INC.
发明人： Christoph H. Krah
IPC分类号： G06F3/03 , G01B11/00 , G06F3/00 , G06F3/01 , G01C3/08 , G01S17/36 , G01S17/48 , G01S7/481 , G01S7/486 , G01S17/66 , G06F3/02 , G06F3/0481 , G06F3/0488 , G01C3/12 , G01S17/10
CPC分类号： 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
摘要： A three-dimensional imaging and display system is provided in which 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 feedback concerning the detected input is presented.
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公开(公告)号：US09830036B2
公开(公告)日：2017-11-28
申请号：US15179909
申请日：2016-06-10
申请人： Apple Inc.
CPC分类号： G06F3/044 , G06F1/3231 , G06F1/3262 , G06F3/017 , G06F3/0227 , G06F3/041 , G06F3/0416 , G06F3/042 , G06F3/0421 , G06F3/0488 , G06F2203/04101 , G06F2203/04104 , G06F2203/04106 , G06F2203/04808 , Y02B70/30 , Y02B70/32 , Y02D10/173
摘要： The use of one or more proximity sensors in combination with one or more touch sensors in a multi-touch panel to detect the presence of a finger, body part or other object and control or trigger one or more functions in accordance with an “image” of touch provided by the sensor outputs is disclosed. In some embodiments, one or more infrared (IR) proximity sensors can be driven with a specific stimulation frequency and emit IR light from one or more areas, which can in some embodiments correspond to one or more multi-touch sensor “pixel” locations. The reflected IR signal, if any, can be demodulated using synchronous demodulation. In some embodiments, both physical interfaces (touch and proximity sensors) can be connected to analog channels in the same electrical core.
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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
申请人： Apple Inc.
CPC分类号： G06F3/0416 , G06F3/03545 , G06F3/0383 , G06F3/041 , G06F3/044 , G06F3/045 , G06F3/047
摘要： 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.
摘要翻译： 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
申请人： Apple Inc.
CPC分类号： G06F3/0416 , G06F3/044 , G06F2203/04104 , G09G5/18
摘要： 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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