Charge compensation during touch sensing
    11.
    发明授权
    Charge compensation during touch sensing 有权
    触摸感应时的充电补偿

    公开(公告)号:US09417729B2

    公开(公告)日:2016-08-16

    申请号:US14299716

    申请日:2014-06-09

    CPC classification number: G06F3/0416 G06F3/0418 G06F3/044 G06F2203/04108

    Abstract: An apparatus of one embodiment includes a sensor and a controller. The sensor has first and second electrodes separated by an insulator. The controller includes measurement circuitry, a processor, and a memory comprising logic. The logic is operable to disconnect the second electrode from the measurement circuitry, induce a current on the second electrode by applying voltage to the first electrode, apply charge to the second electrode, connect the second electrode to the measurement circuitry after applying the charge to the second electrode, and determine a capacitance value associated with the second electrode.

    Abstract translation: 一个实施例的装置包括传感器和控制器。 传感器具有由绝缘体隔开的第一和第二电极。 控制器包括测量电路,处理器和包括逻辑的存储器。 该逻辑可操作以将第二电极与测量电路断开,通过向第一电极施加电压而在第二电极上感应电流,向第二电极施加电荷,在将电荷施加到第二电极之后将第二电极连接到测量电路 并且确定与第二电极相关联的电容值。

    CHARGE COMPENSATION DURING TOUCH SENSING
    12.
    发明申请
    CHARGE COMPENSATION DURING TOUCH SENSING 有权
    触摸感应期间的充电补偿

    公开(公告)号:US20150355775A1

    公开(公告)日:2015-12-10

    申请号:US14299716

    申请日:2014-06-09

    CPC classification number: G06F3/0416 G06F3/0418 G06F3/044 G06F2203/04108

    Abstract: An apparatus of one embodiment includes a sensor and a controller. The sensor has first and second electrodes separated by an insulator. The controller includes measurement circuitry, a processor, and a memory comprising logic. The logic is operable to disconnect the second electrode from the measurement circuitry, induce a current on the second electrode by applying voltage to the first electrode, apply charge to the second electrode, connect the second electrode to the measurement circuitry after applying the charge to the second electrode, and determine a capacitance value associated with the second electrode.

    Abstract translation: 一个实施例的装置包括传感器和控制器。 传感器具有由绝缘体隔开的第一和第二电极。 控制器包括测量电路,处理器和包括逻辑的存储器。 该逻辑可操作以将第二电极与测量电路断开,通过向第一电极施加电压而在第二电极上感应电流,向第二电极施加电荷,在将电荷施加到第二电极之后将第二电极连接到测量电路 并且确定与第二电极相关联的电容值。

    Touch Device
    13.
    发明申请
    Touch Device 审中-公开

    公开(公告)号:US20190138142A1

    公开(公告)日:2019-05-09

    申请号:US16222361

    申请日:2018-12-17

    Abstract: An apparatus includes a display stack and a controller. The display stack includes a display and a ground layer. The ground layer includes a plurality of columns. Each column of the plurality of columns includes a plurality of nodes. The controller provides voltages to a first plurality of nodes of a first column of the plurality of columns of the ground layer such that a sum of the voltages of the first plurality of nodes of the first column is less than or equal to two millivolts. The controller also measures values at a second plurality of nodes of a second column of the plurality of columns. The values at the second plurality of nodes indicates an amount of charge transferred from the first plurality of nodes to the second plurality of nodes.

    Touch device
    14.
    发明授权

    公开(公告)号:US10234974B2

    公开(公告)日:2019-03-19

    申请号:US15617387

    申请日:2017-06-08

    Abstract: In certain embodiments, an apparatus includes a display stack and a controller. The display stack includes a display and a ground layer for generating an image for the display. The ground layer includes a plurality of columns. Each column of the plurality of columns includes a plurality of nodes. The controller provides voltages to a first plurality of nodes, respectively, of a first column of the plurality of columns of the ground layer such that a sum of the respective voltages of the first plurality of nodes of the first column is substantially zero. The controller also measures, to determine whether a touch event occurred, respective values at a second plurality of nodes of a second column of the plurality of columns. The respective values at the second plurality of nodes indicate an amount of charge transferred from the first plurality of nodes to the second plurality of nodes.

    Pseudo Driven Shield
    15.
    发明申请

    公开(公告)号:US20190004629A1

    公开(公告)日:2019-01-03

    申请号:US16042872

    申请日:2018-07-23

    Abstract: In an embodiment, a touch-sensitive device includes a controller, a shield sensor, a plurality of first electrodes, and a plurality of second electrodes. The plurality of first electrodes spans a first direction and the plurality of second electrodes spans a second direction that is different than the first direction. The controller electrically couples the plurality of first electrodes to the shield sensor. The shield sensor charges the plurality of first electrodes to cause substantially equal voltages to be present on the plurality of first electrodes and the plurality of second electrodes.

    Dynamic clustering of touch sensor electrodes

    公开(公告)号:US10042501B2

    公开(公告)日:2018-08-07

    申请号:US15868706

    申请日:2018-01-11

    Abstract: In one embodiment, an apparatus includes a sensor and a controller having a processor and a memory. The memory includes logic operable, when executed by the processor, to connect each electrode of a first subset of electrodes of the sensor and determine a first value associated with the first subset of electrodes. Based at least on the first value, the logic is further operable to alter the first subset of electrodes to a second subset of electrodes and connect, in response to determining to alter the first subset of electrodes to the second subset of electrodes, each electrode of the second subset of electrodes of the sensor.

    TOUCH DEVICE
    17.
    发明申请
    TOUCH DEVICE 审中-公开

    公开(公告)号:US20170364185A1

    公开(公告)日:2017-12-21

    申请号:US15617387

    申请日:2017-06-08

    Abstract: In certain embodiments, an apparatus includes a display stack and a controller. The display stack includes a display and a ground layer for generating an image for the display. The ground layer includes a plurality of columns. Each column of the plurality of columns includes a plurality of nodes. The controller provides voltages to a first plurality of nodes, respectively, of a first column of the plurality of columns of the ground layer such that a sum of the respective voltages of the first plurality of nodes of the first column is substantially zero. The controller also measures, to determine whether a touch event occurred, respective values at a second plurality of nodes of a second column of the plurality of columns. The respective values at the second plurality of nodes indicate an amount of charge transferred from the first plurality of nodes to the second plurality of nodes.

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