Circuit of a node and method for transit time measurement in a radio network

    公开(公告)号:US10085112B2

    公开(公告)日:2018-09-25

    申请号:US14997410

    申请日:2016-01-15

    Abstract: A circuit of a node in a radio network and method for transit time measurement between a first node and a second node of a radio network is provided. A frame is transmitted by the first node, wherein the frame requires an acknowledgment of reception by the second node. A first point in time of the transmission of the frame is established by the first node by a time counter. The frame is received by the second node at a second point in time. The acknowledgment is transmitted by the second node to the first node at a third point in time, wherein the third point in time depends on the second point in time by a predetermined time interval between the second point in time and the third point in time. A fourth point in time is established by the first node by the time counter when the acknowledgment is received. The transit time or the change in transit time is determined from the first point in time established by the time counter and from the established fourth point in time and from the predetermined time interval.

    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.

    Driven shield control
    25.
    发明授权

    公开(公告)号:US10025423B2

    公开(公告)日:2018-07-17

    申请号:US15138152

    申请日:2016-04-25

    Abstract: In an embodiment, a circuit comprises: an analog driver operable to drive a sensor voltage on a capacitive sensor; a digital driver; a shield drive control coupled to the analog driver and the digital driver, the shield drive control operable to: during a one or more phases of a capacitive measurement of the capacitive sensor, disable the analog driver and enable the digital driver to drive a driven shield; and during one or more other phases of a capacitive measurement of the capacitive sensor, disable the digital driver and enable the analog driver to drive the driven shield with a driven shield voltage that replicates the sensor voltage.

    Connecting electrodes to voltages
    26.
    发明授权

    公开(公告)号:US09983748B2

    公开(公告)日:2018-05-29

    申请号:US15045834

    申请日:2016-02-17

    CPC classification number: G06F3/044 G06F1/3262 G06F3/0416 G06F2203/04107

    Abstract: In one embodiment, an apparatus includes a first electrode, one or more processors, and one or more memory units coupled to the one or more processors. The one or more memory units collectively store logic that is configured to cause the one or more processors to control connections of the first electrode by connecting the first electrode to a first reference voltage, then connecting the first electrode to a second reference voltage lower than the first reference voltage, and then connecting the first electrode to a third reference voltage lower than the first reference voltage and the second reference voltage. The second reference voltage is coupled to a capacitor.

    Active stylus communication and position system

    公开(公告)号:US09958966B2

    公开(公告)日:2018-05-01

    申请号:US13653300

    申请日:2012-10-16

    CPC classification number: G06F3/03545 G06F3/044 G06F2203/0381

    Abstract: A method of one embodiment includes generating, by a touch-sensing device, a first signal comprising information identifying a first electrode line of an electrode array of the touch-sensing device, the first signal having a first strength. The first electrode sends the first signal to a stylus, which receives the first signal, the first signal having a received strength. The stylus sends a second signal comprising information based on the received first signal, and the touch-sensing device receives the second signal. A position of the stylus is determined based at least in part on the information identifying the first electrode line and the received strength of the first signal.

    Connecting multiple slave devices to single master controller in bus system

    公开(公告)号:US09953000B2

    公开(公告)日:2018-04-24

    申请号:US14826443

    申请日:2015-08-14

    Abstract: A device comprising: a bus master, including a bi-directional data and clock lines, configured to produce a select signal output for enabling data transmission on the bi-directional data line to first/second different data busses supporting multiple slave devices configured to receive/transmit data over a respective data bus and to receive a clock signal from the bus master from the clock line; and a de-multiplexer including an input, first and second outputs and a control input, the input coupled to the bi-directional data line of the bus master, first/second outputs of the de-multiplexer coupled to first/second data busses, respectively, and the control input configured to receive the select signal from the bus master that is configured to communicate to a first slave device when the select signal is in a first state, and a second different slave device when the select signal is in a second different state.

    Two dimensional position sensor
    29.
    发明授权

    公开(公告)号:US09927476B2

    公开(公告)日:2018-03-27

    申请号:US14144174

    申请日:2013-12-30

    CPC classification number: G01R27/2605 G06F3/044

    Abstract: A position sensor comprises first and second electrodes that generally extend in a first direction and are arranged in a pattern that defines a sensitive area, the second electrodes interleaved with the first electrodes in a second direction. The first electrodes comprise first, second, and third groups of elements, elements in the first, second, and third groups being connected to each other but not to elements in another group. The elements have shapes configured for adjacent elements in the first and second groups to co-extend in the first direction over a first portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction, and adjacent elements in the second and third groups to co-extend in the first direction over a second portion of the sensitive area and to provide ratiometric capacitive signals with respect to each other in the first direction.

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