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公开(公告)号：US10061449B2
公开(公告)日：2018-08-28
申请号：US14869980
申请日：2015-09-29
Applicant: Apple Inc.
Inventor： Vivek Pant , Shahrooz Shahparnia , Marduke Yousefpor , Christoph H. Krah
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.
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公开(公告)号：US10042459B2
公开(公告)日：2018-08-07
申请号：US14847404
申请日：2015-09-08
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Yafei Bi , Kevin J. White
Abstract: The disclosed embodiments relate to a system that provides power for a touch-enabled display, wherein the touch-enabled display cycles between a display mode and a touch mode. During the display mode, the system drives a display-mode voltage to the touch-enabled display through a power output, wherein the power output is coupled through a display-mode capacitor CD to ground. Next, during a transition from the display mode to the touch mode, the system couples the power output through a touch-mode capacitor CT to ground, wherein CT was previously charged to a touch-mode voltage, which causes the power output to rapidly transition to the touch-mode voltage. Then, during the touch mode, the system drives the touch-mode voltage through the power output.
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公开(公告)号：US20170285810A1
公开(公告)日：2017-10-05
申请号：US15627058
申请日：2017-06-19
Applicant: Apple Inc.
Inventor： Christoph H. Krah
CPC classification number: G06F3/044 , G06F3/016 , G06F3/0412 , G06F3/0414 , G06F3/0418 , G06F2203/04105 , G06F2203/04106
Abstract: An integrated touch sensing and force sensing device is included in an electronic device. The integrated touch sensing and force sensing device includes a force-sensitive layer operably attached to an input surface, a first electrode layer attached to a first surface of the force-sensitive layer, and a second electrode layer attached to a second surface of the force-sensitive layer. An analog front end processing channel is operable to process a touch signal that is based on a change in an electrical property between the first and second electrode layers and operable to process a force signal that is based on an electrical property generated by the force-sensitive layer based on a force applied to the input surface.
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公开(公告)号：US20170090612A1
公开(公告)日：2017-03-30
申请号：US14870815
申请日：2015-09-30
Applicant: Apple Inc.
Inventor： Taif A. Syed , Kingsuk Brahma , Christoph H. Krah
CPC classification number: G06F3/044 , G06F3/0412 , G06F2203/04101
Abstract: 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：US09529415B2
公开(公告)日：2016-12-27
申请号：US14749524
申请日：2015-06-24
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 for a touch controller is disclosed. The 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: 公开了触摸控制器的电源管理。 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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Patent Agency Ranking
公开(公告)号：US12080201B2
公开(公告)日：2024-09-03
申请号：US18468654
申请日：2023-09-15
Applicant: Apple Inc.
Inventor： Christian M. Sauer , Christoph H. Krah , Derek K. Shaeffer , Hasan Akyol , Henry C. Jen , John T. Wetherell
CPC classification number: G09G3/32 , G06F3/0412 , G06F3/0418 , G06F3/044 , H01L27/156 , G09G2354/00
Abstract: An integrated touchscreen can include light emitting diodes or organic light emitting diodes (LEDs/OLEDs), display chiplets and touch chiplets disposed in a visible area of the integrated touch screen. For example, the LEDs/OLEDs, display chiplets and touch chiplets can be placed on a substrate by a micro-transfer tool. The integrated touchscreen can also include electrodes disposed in the visible area of the integrated touch screen. The electrodes can be capable of providing display functionality via the one or more display chiplets during display operation (e.g., operating as cathode terminals of the LEDs during the display operation) and capable of providing touch functionality via the touch chiplets during touch operation (e.g., touch node electrodes can be formed from groups of the electrodes and sensed). In some examples, the touch node electrodes can be formed and coupled to touch chiplets via the display chiplets.
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公开(公告)号：US12079420B2
公开(公告)日：2024-09-03
申请号：US16945733
申请日：2020-07-31
Applicant: Apple Inc.
Inventor： Christoph H. Krah , Thomas James Wilson
IPC: G06F1/3287 , G06F1/3215 , G06F1/3234 , G06F1/3296 , G06F3/041
CPC classification number: G06F3/04166 , G06F1/3215 , G06F1/3262 , G06F1/3287 , G06F1/3296 , G06F3/041 , G06F3/0416 , Y02D30/50
Abstract: Power management for a touch controller is disclosed. The 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.
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公开(公告)号：US12014003B2
公开(公告)日：2024-06-18
申请号：US17805673
申请日：2022-06-06
Applicant: Apple Inc.
Inventor： Christoph H. Krah
IPC: G06F3/041 , G06F3/0354 , G06F3/044 , G06F3/047
CPC classification number: G06F3/04164 , G06F3/03545 , G06F3/0412 , G06F3/0416 , G06F3/04166 , G06F3/044 , G06F3/0443 , G06F3/047
Abstract: A switching circuit is disclosed. The switching circuit can comprise a plurality of pixel mux blocks, each of the pixel mux blocks configured to be coupled to a respective touch node electrode on a touch sensor panel, and each of the pixel mux blocks including logic circuitry. The switching circuit can also comprise a plurality of signal lines configured to be coupled to sense circuitry, at least one of the signal lines configured to transmit a touch signal from one of the respective touch node electrodes to the sense circuitry. The logic circuitry in each pixel mux block of the plurality of pixel mux blocks can be configured to control the respective pixel mux block so as to selectively couple the respective pixel mux block to any one of the plurality of signal lines.
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49.发明授权公开(公告)号：US11880533B1
公开(公告)日：2024-01-23
申请号：US17934176
申请日：2022-09-21
Applicant: Apple Inc.
Inventor： Du Chen , Christoph H. Krah
CPC classification number: G06F3/0418 , G06F1/08 , G06F3/0412 , G06F3/0416 , H02M3/158 , G06F3/044 , G06F2203/04107
Abstract: A power management circuit can comprise a direct-current-to-direct-current (DC-DC) converter and a guard buffer. The guard buffer can be referenced to a system ground and configured to generate a guard ground. The power management circuit can comprise a supply capacitor coupled to the DC-DC converter that can be referenced to system ground in a first mode and referenced to the guard ground in a second mode. A regulator can be coupled to the DC-DC converter and referred to system ground in the first mode, and decoupled and referred to guard ground in the second mode. The DC-DC converter can generate a first voltage in the first mode and a second voltage in the second mode, the second voltage greater than the first.
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公开(公告)号：US11874958B2
公开(公告)日：2024-01-16
申请号：US17448873
申请日：2021-09-24
Applicant: Apple Inc.
Inventor： Erdrin Azemi , Ali Moin , Christoph H. Krah , Joseph Yitan Cheng , Kaan Emre Dogrusoz , Mohammad Yeke Yazdandoost
IPC: G06F3/01 , G06F1/3203 , G06F1/3206 , G06F1/3234 , G06F1/3287
CPC classification number: G06F3/013 , G06F1/3203 , G06F1/325 , G06F3/015 , G06F3/017 , G06F1/3206 , G06F1/3234 , G06F1/3287
Abstract: A head-mounted device having a plurality of electrodes configured to detect optical events such as the movement of one or more eyes or coarse eye gestures is disclosed. In some examples, the one or more electrodes can be coupled to dielectric elastomer materials whose shape can be changed to vary contact between a user of the head-mounted device and the one or more electrodes to ensure sufficient contact and electrode signal quality. In some examples, the one or more electrodes can be coupled to pressure sensors and control circuitry to monitor and adjust the applied pressure. In some examples, the optical events can be used as triggers for operating the device, including transitioning between operational power modes. In some examples, the triggers can invoke higher resolution sensing capabilities of the head-mounted device. In some examples, the electrodes can be used as an on-head detector to wake-up and/or unlock the device.
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