Capacitance-to-voltage modulation circuit

    公开(公告)号:US10353511B2

    公开(公告)日:2019-07-16

    申请号:US15271131

    申请日:2016-09-20

    Abstract: The present disclosure describes aspects of a capacitance-to-voltage modulation circuit. In some aspects, the circuit is used in touch sensing. In some aspects, a modulation circuit comprises a first pair of switches having one switch connected between a voltage source and a capacitor, and another switch connected between ground and the input of the circuit. The circuit also includes a second pair of switches having one switch connected between the voltage source and the input of the circuit, and another switch connected between ground and the capacitor. A third pair of the circuit's switches comprise one switch connected between the capacitor and an input of an analog-to-digital converter (ADC) and another switch connected between the input of the circuit and the input of the ADC. The third pair of switches may enable charge sharing of signals modulated by the first and second pairs of switches, a result of which can be used to sense touch input based on capacitance at the input of the circuit.

    POINT SPREAD FUNCTION ESTIMATION AND DECONVOLUTION-BASED DISTORTION REMOVAL

    公开(公告)号:US20180060635A1

    公开(公告)日:2018-03-01

    申请号:US15253729

    申请日:2016-08-31

    CPC classification number: G06K9/0002 G06K9/522 G06T5/003 G06T5/006

    Abstract: One aspect of the subject matter described may be implemented in a system for use in obtaining a deconvolved image of an object. In some implementations, the system may include an ultrasonic sensing system configured to perform an ultrasonic image scanning operation including one or more image scans of an object to obtain at least one measured image of the object. The system may include a processing unit configured to determine an initial estimate of a point spread function (PSF) associated with the ultrasonic image scanning operation based on the measured image. The processing unit may be configured to determine an initial estimate of a deconvolved image of the object based on the initial estimate of the PSF. The processing unit may be further configured to determine a refined estimate of the deconvolved image using an iterative deconvolution operation based on the initial estimates of the PSF and the deconvolved image.

    Gradual Power Wake-Up Mechanism
    23.
    发明申请
    Gradual Power Wake-Up Mechanism 审中-公开
    渐进电源唤醒机制

    公开(公告)号:US20170075700A1

    公开(公告)日:2017-03-16

    申请号:US15260132

    申请日:2016-09-08

    Abstract: Apparatuses and methods of a gradual power wake-up mechanism are disclosed. In one embodiment, a method of activating a device based on detection of a fingerprint image may include monitoring a first metric level of a first set of regions of the fingerprint image, determining a second metric level of a second set of regions of the fingerprint image in response to the first metric level exceeding a first threshold, and activating the device based on the second metric level of the second set of regions of the fingerprint image.

    Abstract translation: 公开了逐步功率唤醒机构的装置和方法。 在一个实施例中,基于对指纹图像的检测来激活设备的方法可以包括监视指纹图像的第一组区域的第一度量级别,确定指纹图像的第二组区域的第二度量级别 响应于所述第一度量水平超过第一阈值,以及基于所述指纹图像的所述第二组区域的所述第二度量水平来激活所述设备。

    Method and system for robotic positioning
    24.
    发明授权
    Method and system for robotic positioning 有权
    机器人定位方法与系统

    公开(公告)号:US09446520B2

    公开(公告)日:2016-09-20

    申请号:US14878129

    申请日:2015-10-08

    Abstract: A robotic system including at least two acoustic sensors, spaced apart, for receiving respective versions of a respective continuous ultrasonic waveform emitted by each of one or more positional elements, each of the respective continuous ultrasonic waveforms comprising a respective modulated carrier and an electromagnetic sensor for receiving a respective electromagnetic signal emitted by a respective electromagnetic emitter of a same respective one of the positional elements, and a computing device. The respective electromagnetic signal is emitted in coordination with the respective ultrasonic waveform emitted by the same positional element. The computing device decodes the versions of the ultrasonic waveform and the electromagnetic signal to measure time delays between the versions of the respective ultrasonic waveform and the respective electromagnetic signal, converts the time delays to distances, and triangulates the distances to determine positions of the positional elements. A robot maneuvers based on the determined positions.

    Abstract translation: 一种机器人系统,包括至少两个间隔开的声学传感器,用于接收由一个或多个位置元件中的每一个发射的相应连续超声波波形的各自版本,每个连续超声波波形包括相应的调制载波和电磁传感器, 接收由相应的一个位置元件的相应的电磁发射器发射的相应的电磁信号,以及计算装置。 各个电磁信号与由相同的位置元件发射的各个超声波波形协调地发射。 计算装置对超声波波形和电磁信号的版本进行解码,以测量各个超声波波形的版本与各个电磁信号之间的时间延迟,将时间延迟转换成距离,并对距离进行三角测量以确定位置元件的位置 。 机器人基于确定的位置进行操纵。

    MAGNETIC SYNCHRONIZATION FOR A POSITIONING SYSTEM
    25.
    发明申请
    MAGNETIC SYNCHRONIZATION FOR A POSITIONING SYSTEM 有权
    定位系统的磁同步

    公开(公告)号:US20140293748A1

    公开(公告)日:2014-10-02

    申请号:US14229778

    申请日:2014-03-28

    CPC classification number: G01S3/8083 G06F3/03545 G06F3/0433

    Abstract: A synchronization system for an acoustic signal-based positioning system is provided that generates a magnetic field as a synchronization signal. The magnetic synchronization signal is transmitted by a transmitter of the positioning system and received by the receiver of the positioning system. The receiver may include a magnetic synchronization signal receiver that may receive the magnetic synchronization signal on a same acoustic channel as an acoustic positioning signal. Moreover, the magnetic synchronization signal receiver may be a component already present in the receiver and capable of receiving a magnetic synchronization signal.

    Abstract translation: 提供了一种用于基于声信号的定位系统的同步系统,其产生磁场作为同步信号。 磁同步信号由定位系​​统的发射机发射并由定位系统的接收机接收。 接收机可以包括磁同步信号接收机,其可以在与声定位信号相同的声通道上接收磁同步信号。 此外,磁同步信号接收机可以是已经存在于接收机中并且能够接收磁同步信号的组件。

    ULTRASONIC DIGITIZER AND HOST
    26.
    发明申请
    ULTRASONIC DIGITIZER AND HOST 审中-公开
    超声波DIGITIZER和主机

    公开(公告)号:US20140049519A1

    公开(公告)日:2014-02-20

    申请号:US14062439

    申请日:2013-10-24

    CPC classification number: G06F3/043 G06F1/12 G06F3/03545 G06F3/0433

    Abstract: A computing system comprises a processor and internal peripheral devices, and a system bus connecting the internal peripheral devices to the processor. One of the internal peripheral devices is an ultrasonic digitizer that digitizes ultrasonic signals from at least two associated microphones into a digitized audio signal carrying a corresponding location and outputs the digitized audio as a signal on the system bus.

    Abstract translation: 计算系统包括处理器和内部外围设备,以及将内部外围设备连接到处理器的系统总线。 内部外围设备之一是超声数字化仪,其将来自至少两个相关麦克风的超声波信号数字化为携带相应位置的数字化音频信号,并将数字化音频作为信号输出到系统总线上。

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