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    WEIGHTING FOR DISPLAY NOISE REMOVAL IN CAPACITIVE SENSORS
    1.
    发明申请
    WEIGHTING FOR DISPLAY NOISE REMOVAL IN CAPACITIVE SENSORS 有权
    称重显示噪声去除电容式传感器

    公开(公告)号：US20150309618A1

    公开(公告)日：2015-10-29

    申请号：US14671989

    申请日：2015-03-27

    Applicant: SYNAPTICS INCORPORATED

    Inventor： Drew Garvin KEPPEL, JR. ,  Shubha RAMAKRISHNAN

    IPC: G06F3/044 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0418

    Abstract: A processing system for a capacitive sensing input device comprises a sensor module and a determination module. The sensor module acquires a plurality of capacitive resulting signals by operating a plurality of sensor electrodes for capacitive sensing. The determination module weights values of the plurality of capacitive resulting signals to achieve a plurality of weighted capacitive resulting signals, wherein a first capacitive resulting signal of the plurality of capacitive resulting signals is weighted according to a weighted noise parameter derived from a component of a variable noise associated with a respective sensor electrode used for acquisition of the first capacitive resulting signal, wherein the variable noise varies across the plurality of sensor electrodes. The determination module also determines positional information for an least input object in a sensing region of the capacitive sensing input device based on resulting signals processed from the weighted capacitive resulting signals.

    Abstract translation: 一种用于电容感测输入装置的处理系统，包括传感器模块和确定模块。 传感器模块通过操作用于电容感测的多个传感器电极来获取多个电容性结果信号。 所述确定模块对所述多个电容性结果信号的权重进行加权，以实现多个加权的电容结果信号，其中所述多个电容性结果信号的第一电容结果信号根据从变量的分量导出的加权噪声参数进行加权 与用于获取第一电容性结果信号的相应传感器电极相关联的噪声，其中可变噪声在多个传感器电极之间变化。 确定模块还基于从加权的电容结果信号处理的结果信号，确定电容感测输入装置的感测区域中的最小输入对象的位置信息。

    COMPENSATING FORCE BASELINE ARTIFACTS IN A CAPACITIVE SENSOR
    2.
    发明申请
    COMPENSATING FORCE BASELINE ARTIFACTS IN A CAPACITIVE SENSOR 审中-公开

    公开(公告)号：US20170102800A1

    公开(公告)日：2017-04-13

    申请号：US15199421

    申请日：2016-06-30

    Applicant: SYNAPTICS INCORPORATED

    Inventor： Shubha RAMAKRISHNAN ,  Adam L. SCHWARTZ

    IPC: G06F3/044 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/0418

    Abstract: An example processing system for a capacitive input device includes sensor circuitry configured to drive a plurality of sensor electrodes with capacitive sensing signals over time to acquire capacitive values of a plurality of capacitive frames. The processing system includes a determination module configured to analyze a first capacitive frame of the plurality of capacitive frames to identify a force event by detecting that a rate of change of a first capacitive value in the, first capacitive frame exceeds a first threshold. The determination module is configured to determine a change in capacitance between the first capacitive value and a baseline value, and analyze a second capacitive frame of the plurality of capacitive frames acquired after the force event to adjust the baseline value responsive to a difference between the baseline value and a second capacitive value in the second capacitive frame falling below a second threshold.

    POWER CONSUMPTION OPTIMIZATION USING INTERFERENCE MEASUREMENTS
    3.
    发明申请
    POWER CONSUMPTION OPTIMIZATION USING INTERFERENCE MEASUREMENTS 审中-公开

    公开(公告)号：US20180260016A1

    公开(公告)日：2018-09-13

    申请号：US15456262

    申请日：2017-03-10

    Applicant: SYNAPTICS INCORPORATED

    Inventor： Matthew STEVENSON ,  Sanjay MANI ,  Nickolas V. FOTOPOULOS ,  Derek SOLVEN ,  Shubha RAMAKRISHNAN

    IPC: G06F1/32

    CPC classification number: G06F1/3287 ,  G06F1/324 ,  G06F1/3296

    Abstract: A method and related processing system and input device are disclosed for power consumption optimization using interference measurements. The method comprises applying, within a predefined first low-power operational mode, a first set of values for at least one predefined sensing parameter and corresponding to a first power consumption level; acquiring, within the first low-power operational mode, a first interference measurement using the plurality of sensor electrodes; transitioning, upon determining the first interference measurement exceeds a first interference threshold value, into a predefined high-power operational mode; and applying, within the high-power operational mode, a second set of values for the at least one predefined sensing parameter and corresponding to a second power consumption level greater than the first power consumption level.

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