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公开(公告)号：FR2917517A1
公开(公告)日：2008-12-19
申请号：FR0853889
申请日：2008-06-12
Applicant: APPLE INC
Abstract: Utilisation de multiples fréquences et phases de stimulation pour générer une image d'un toucher sur un panneau de capteurs de toucher (124, 200, 524). Chacun parmi une pluralité de canaux de détection (108, 300) peut être couplé à une colonne dans un panneau de capteurs de toucher (124, 200, 524) et peut comporter de multiples mélangeurs (304). Chaque mélangeur (304) dans le canal de détection (108, 300) peut utiliser un circuit capable de générer une fréquence de démodulation d'une fréquence particulière. Au niveau de chacune des multiples étapes, diverses phases de fréquences sélectionnées peuvent être utilisées pour stimuler simultanément les rangées du panneau de capteurs de toucher (124, 200, 524), et les multiples mélangeurs (304) dans chaque canal de détection (108, 300) peuvent être configurés de façon à démoduler le signal reçu de la colonne raccordée à chaque canal de détection (108, 300) au moyen des fréquences sélectionnées. Une fois que l'ensemble des étapes a été achevé, les signaux démodulés à partir des multiples mélangeurs (304) peuvent être utilisés dans des calculs pour déterminer une image d'un toucher pour le panneau de capteurs de toucher (124, 200, 524) à chaque fréquence.
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公开(公告)号：AU2013204047B2
公开(公告)日：2015-11-12
申请号：AU2013204047
申请日：2013-04-11
Applicant: APPLE INC
Inventor： WILSON THOMAS JAMES , KRAH CHRISTOPH HORST , HOTELLING STEVEN PORTER
IPC: G06F1/32
Abstract: Embodiments of the invention include an IC that includes a core used for ordinary operation and a thin power circuit. The thin power circuit can be configured to use very little power. The IC can also include a digital interface and a connection thereto. The IC can initiate transition to low power mode during which the core and various I/O pads can be shut down. However, the thin power circuit can be kept powered up. The thin power circuit can monitor the digital interface for a predefined wake up signal. When the wake up signal is detected, the thin power circuit can power up the core and any powered down I/O pads. The thin power circuit can also include a dedicated power on reset (POR) cell. This POR cell can be distinct than other POR cells used for the IC and can be specifically designed to for efficient operation.
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公开(公告)号：AU2014100180B4
公开(公告)日：2014-10-23
申请号：AU2014100180
申请日：2014-02-26
Applicant: APPLE INC
Abstract: A force sensor interface in a touch controller of a touch sensitive device is disclosed. The force sensor interface can couple to touch circuitry to integrate one or more force sensors with touch sensors of the device. The force sensor interface can include one portion to transmit stimulation signals generated by the touch circuitry to the force sensors to drive the sensors. The interface can also include another portion to receive force signals, indicative of a force applied to the device, from the force sensors for processing by the touch circuitry. The device can use the touch circuitry to concurrently and seamlessly operate both the force sensors and the touch sensors.
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公开(公告)号：CA2633408C
公开(公告)日：2013-08-13
申请号：CA2633408
申请日：2008-06-04
Applicant: APPLE INC
Abstract: The use of multiple stimulation frequencies and phases to generate an image of touch on a touch sensor panel is disclosed. Each of a plurality of sense channels can be coupled to a column in a touch sensor panel and can have multiple mixers. Each mixer in the sense channel can utilize a circuit capable generating a demodulation frequency of a particular frequency. At each of multiple steps, various phases of selected frequencies can be used to simultaneously stimulate the rows of the touch sensor panel, and the multiple mixers in each sense channel can be configured to demodulate the signal received from the column connected to each sense channel using the selected frequencies. After all steps have been completed, the demodulated signals from the multiple mixers can be used in calculations to determine an image of touch for the touch sensor panel at each frequency.
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公开(公告)号：AU2012101369B4
公开(公告)日：2012-12-06
申请号：AU2012101369
申请日：2012-09-05
Applicant: APPLE INC
Inventor： KRAH CHRISTOPH HORST , WHITE KEVIN J , BI YAFEI
IPC: G06F1/32
Abstract: Reducing or eliminating the effects of noise that can be generated by a power system of a touch screen device, such as a gate line voltage system that applies voltage to gate lines of the touch screen, is provided. In one example, a power supply, such as a charge pump, can be disabled during active touch sensing, such that noise from the charge pump is not generated during touch sensing. In some examples, a voltage regulator can help to maintain the gate voltage level at or above a desired threshold. In some cases, noise entering the touch sensing system can have a lasting effect on noise-sensitive components, even after the noise source is disabled. In these cases, a post-noise stabilizing system can be included to stabilize, reset, etc., noise-sensitive components of the touch sensing system, which can help to reduce or eliminate the lasting effect of noise.
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Patent Agency Ranking
公开(公告)号：GB2475631A
公开(公告)日：2011-05-25
申请号：GB201101918
申请日：2007-04-05
Applicant: APPLE INC
Inventor： HOTELLING STEVEN P , KRAH CHRISTOPH HORST , HUPPI BRIAN QUENTIN
IPC: G06F3/044
Abstract: An offset compensation circuit for use in conjunction with a capacitive touch sensor in for example a tablet personal computer. The controller may have a single application specific integrated circuit (ASIC) with an output circuitry connected to a row electrode to generate timing signals that generate drive waveforms for a transparent touch screen (36) for driving a capacitive multi-touch sensor, to determine proximity of object at each node by measuring coupling of drive waveforms for reading sensor. Various noise rejection and dynamic range enhancement techniques may permit the controller to be used with various sensors in various conditions without reconfiguring hardware. The offset compensation circuit uses a programmable offset digital to analogue converter to generate a static component for the capacitive coupling and a sub-tractor circuit. The offset signal is adjustable and determined from a look-up table for each of the touch pixels.
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公开(公告)号：AU2007342148B2
公开(公告)日：2011-03-03
申请号：AU2007342148
申请日：2007-12-22
Applicant: APPLE INC
Inventor： VU MINH-DIEU THI , WILSON THOMAS JAMES , KRAH CHRISTOPH HORST
IPC: G06F3/044 , G06F3/041 , H03K17/955
Abstract: A system and method for autonomously scanning a sensor panel device, such as a multi-touch panel, is disclosed. In one embodiment, the system and method disables a sensor panel processor 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. Accordingly, 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, then the sensor panel device continues to periodically autonomously scan the sensor panel without intervention from the processor. Furthermore, 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：NL2003543C2
公开(公告)日：2011-01-25
申请号：NL2003543
申请日：2009-09-25
Applicant: APPLE INC
Abstract: The use of multiple stimulation signals having one or more frequencies and one or more phases to generate an image of touch on a touch sensor panel is disclosed. Each of a plurality of sense channels can be coupled to a column in a touch sensor panel and can have one or more mixers. Each mixer in the sense channel can utilize a circuit capable generating a demodulation frequency of a particular frequency. At each of multiple steps, various phases of one or more selected frequencies can be used to simultaneously stimulate the rows of the touch sensor panel, and the one or more mixers in each sense channel can be configured to demodulate the signal received from the column connected to each sense channel using the one or more selected frequencies. After all steps have been completed, the demodulated signals from the one or more mixers can be used in calculations to determine an image of touch for the touch sensor panel at each of the one or more frequencies.
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公开(公告)号：GB2455179B
公开(公告)日：2011-01-12
申请号：GB0820662
申请日：2007-06-08
Applicant: APPLE INC
Inventor： HOTELLING STEVEN P , CHEN WEI , KRAH CHRISTOPH HORST , ELIAS JOHN GREER , YAO WEI H , ZHONG JOHN Z , HODGE ANDREW BERT , LAND BRIAN RICHARDS , BOER WILLEM DEN
Abstract: Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane-switching (IPS) LCDs, In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed.
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公开(公告)号：GB2451210B
公开(公告)日：2010-09-22
申请号：GB0820661
申请日：2007-06-08
Applicant: APPLE INC
Inventor： HOTELLING STEVE PORTER , CHEN WEI , ELIAS JOHN GREER , YAO WEI H , ZHONG JOHN Z , HODGE ANDREW BERT , LAND BRIAN , BOER WILLEM DEN , KRAH CHRISTOPH HORST
Abstract: Disclosed herein are liquid-crystal display (LCD) touch screens that integrate the touch sensing elements with the display circuitry. The integration may take a variety of forms. Touch sensing elements can be completely implemented within the LCD stackup but outside the not between the color filter plate and the array plate. Alternatively, some touch sensing elements can be between the color filter and array plates with other touch sensing elements not between the plates. In another alternative, all touch sensing elements can be between the color filter and array plates. The latter alternative can include both conventional and in-plane- switching (IPS) LCDs. In some forms, one or more display structures can also have a touch sensing function. Techniques for manufacturing and operating such displays, as well as various devices embodying such displays are also disclosed.
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