-
公开(公告)号：AU2012227270B2
公开(公告)日：2015-01-15
申请号：AU2012227270
申请日：2012-09-21
Applicant: APPLE INC
Inventor： LAND BRIAN RICHARDS , YOUSEFPOR MARDUKE , HOTELLING STEVEN PORTER
IPC: G06F3/041
Abstract: Negative pixel compensation in a touch sensitive device is disclosed. The device can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the device. To do so, the device can switch to a configuration to measure the grounding condition of the touching object and use the measurement to compensate the touch output values from the device accordingly. In the switched configuration, a first set of lines of the device can be switched between a coupling to a stimulation signal input to drive the device, a coupling to a capacitance signal output to output a signal indicative of the object's grounding condition, and a coupling to ground. A second set of lines of the device can be coupled to a touch signal output to output a signal indicative of the object's touch at the device. In addition or alternatively, in the switched configuration, the first set of lines of the device can be switched to function as the second set of lines and vice versa. The grounding signal can be applied to the touch signal to compensate for the negative pixel effect.
-
公开(公告)号：GB2474098B
公开(公告)日：2014-01-08
申请号：GB201013997
申请日：2010-08-20
Applicant: APPLE INC
Inventor： HOTELLING STEVEN PORTER , YOUSEFPOR MARDUKE , CHANG SHIH CHANG , ZHONG JOHN Z
IPC: G06F3/044
Abstract: Displays with integrated touch sensing circuitry are provided. An integrated touch screen can include multi-function circuit elements that form part of the display circuitry of the display system that generates an image on the display, and also form part of the touch sensing circuitry of a touch sensing system that senses one or more touches on or near the display. The multi-function circuit elements can be, for example, capacitors in display pixels of an LCD that are configured to operate as display circuitry in the display system, and that may also be configured to operate as touch circuitry of the touch sensing system. For example, one or more circuit elements of the display pixel stackup can form a conductive portion of the touch sensing system, such as a charge collector, which can be operated with switches and conductive lines to sense touch.
-
公开(公告)号：GB2496950B
公开(公告)日：2013-10-09
申请号：GB201218672
申请日：2012-10-17
Applicant: APPLE INC
Inventor： YOUSEFPOR MARDUKE , CHANG SHIH CHANG , WHITE KEVIN J , HOTELLING STEVEN PORTER
Abstract: A gate driver circuit for switching gate line voltage supplies between display and touch modes is disclosed. The circuit can include one or more switches configured to switch one or more gate lines of an integrated touch sensitive display between a display mode and a touch mode. During touch mode, the circuit can be configured to switch the gate lines to connect to a more stable voltage supply. The circuit can also be configured to reduce or eliminate interference from the display circuitry to the touch circuitry that could affect touch sensing. During display mode, the circuit can be configured to switch the gate lines to connect to a fluctuating voltage supply.
-
公开(公告)号：AU2013200693A1
公开(公告)日：2013-09-12
申请号：AU2013200693
申请日：2013-02-11
Applicant: APPLE INC
Inventor： YOUSEFPOR MARDUKE , GRUNTHANER MARTIN PAUL
Abstract: Attorney Docket No.: 10684-20475.40 Client Ref No.: P12617AU1 [00601 A touch panel configured to compensate for negative pixel effect is disclosed. The panel can be configured to increase a capacitive sense signal, indicative of a touching or hovering object, in order to compensate for an increase in negative capacitance when the object is poorly grounded. To perform the compensation, the panel can be configured to have split sense lines so as to increase the number of electric fringe fields forming the sense signal, thereby providing a sense signal that is substantially stronger than the negative capacitance signal. Each sense line can be split into two or more strips. -22 la-1 198424 Inventors: Marduke YOUSEFPOR and Martin Paul GRUNTHANER Title: SPLIT LINES FOR NEGATIVE PIXEL COMPENSATION LINE S1"' FORM 1ST CAPACITIVE PATH 810 FORM 2ND CAPACITIVE PATH 820 FORM 1ST CAPACITANCE ALONG 1ST PATH & 2ND CAPACITANCE ALONG 2ND PATH, WHERE 1ST CAPACITANCE 830 GREATER THAN 2ND CAPACITANCE TO COMPENSATE FOR NEGATIVE PIXEL EFFECT
-
公开(公告)号：MX2012000321A
公开(公告)日：2012-04-30
申请号：MX2012000321
申请日：2010-07-07
Applicant: APPLE INC
Inventor： LAND BRIAN RICHARDS , YOUSEFPOR MARDUKE , HOTELLING STEVEN PORTER
IPC: G06F3/041
Abstract: Se describe una compensación de pixel negativo en un dispositivo sensible al tacto. El dispositivo puede compensar un efecto de pixel negativo en salidas de señal de toque debido a una puesta a tierra pobre de un objeto que toca el dispositivo. Para esto, el dispositivo puede conmutarse a una configuración para medir la condición de puesta a tierra del objeto tocado y usar la medición para compensar los valores de salida de toque del dispositivo en consecuencia. En la configuración conmutada, un primer conjunto de líneas del dispositivo puede conmutarse entre un acoplamiento para una entrada de señal de estimulación para conducir el dispositivo, un acoplamiento a una salida de señal de capacitancia para sacar una señal que indica la condición de puesta a tierra del objeto, y un acoplamiento puesto a tierra. Un segundo conjunto de líneas del dispositivo pueden acoplarse a una salida de señal de toque para sacar una señal que indica el toque del objeto en el dispositivo.
-
Patent Agency Ranking
公开(公告)号：AU2010202693A1
公开(公告)日：2011-01-27
申请号：AU2010202693
申请日：2010-06-28
Applicant: APPLE INC
Inventor： LAND BRIAN RICHARDS , YOUSEFPOR MARDUKE , HOTELLING STEVEN PORTER
IPC: G06F3/041
Abstract: Negative pixel compensation in a touch sensitive device is disclosed. The device can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the device. To do so, the device can switch to a configuration to measure the grounding condition of the touching object and use the measurement to compensate the touch output values from the device accordingly. In the switched configuration, a first set of lines of the device can be switched between a coupling to a stimulation signal input to drive the device, a coupling to a capacitance signal output to output a signal indicative of the object's grounding condition, and a coupling to ground. A second set of lines of the device can be coupled to a touch signal output to output a signal indicative of the object's touch at the device. In addition or alternatively, in the switched configuration, the first set of lines of the device can be switched to function as the second set of lines and vice versa. The grounding signal can be applied to the touch signal to compensate for the negative pixel effect.
-
公开(公告)号：GB2471772A
公开(公告)日：2011-01-12
申请号：GB201011402
申请日：2010-07-07
Applicant: APPLE INC
Inventor： LAND BRIAN RICHARDS , YOUSEFPOR MARDUKE , HOTELLING STEVEN PORTER
Abstract: A touch sensitive device 300 incorporated in a personal computer, digital media player or mobile phone, can compensate for a negative pixel effect in touch signal outputs due to poor grounding of an object touching the device. To do so, the device can switch to a configuration to measure the grounding condition of the touching object and use the measurement to compensate the touch output values from the device accordingly. In the switched configuration, some un-stimulated drive lines 302c of the device can switchably couple to sensors to detect a capacitance indicative of the object's grounding condition (such as drive line 302b) and become auxiliary sense lines. The drive lines can also be switched to couple to a stimulation signal input to drive the device (302a), and to couple to ground. A second set of sense lines (304) can be coupled to a touch signal output to output a signal indicative of the object's touch at the device. The drive lines can be switched to function as sense lines and vice versa. The grounding signal can be applied to the touch signal to compensate for the negative pixel effect.
-
公开(公告)号：HK1141101A1
公开(公告)日：2010-10-29
申请号：HK10107370
申请日：2010-08-03
Applicant: APPLE INC
IPC: G06F20060101
-
公开(公告)号：AU2018211248A1
公开(公告)日：2018-08-16
申请号：AU2018211248
申请日：2018-08-01
Applicant: APPLE INC
Inventor： SHAHPARNIA SHAHROOZ , MULLENS CHRISTOPHER TENZIN , GRUNTHANER MARTIN PAUL , GEBOFF ADAM , RANGANATHAN SUMANT , PANT VIVEK , VERMA SHWETABH , YOUSEFPOR MARDUKE , KRAH CHRISTOPH H
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.
-
公开(公告)号：AU2017202886B2
公开(公告)日：2018-06-07
申请号：AU2017202886
申请日：2017-05-01
Applicant: APPLE INC
Inventor： SHAHPARNIA SHAHROOZ , MULLENS CHRISTOPHER TENZIN , GRUNTHANER MARTIN PAUL , GEBOFF ADAM , RANGANATHAN SUMANT , PANT VIVEK , VERMA SHWETABH , YOUSEFPOR MARDUKE , KRAH CHRISTOPH H
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.
-
-
-
-
-
-
-
-
-
Search Results
67
records
(took 0.027 seconds)
