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公开(公告)号：US20220366189A1
公开(公告)日：2022-11-17
申请号：US17317480
申请日：2021-05-11
摘要： This disclosure provides methods, devices, and systems for low-light imaging. The present implementations more specifically relate to selecting images that can be used for training a neural network to infer denoised representations of images captured in low light conditions. In some aspects, a machine learning system may obtain a series of images of a given scene, where each of the images is associated with a different SNR (representing a unique combination of exposure and gain settings). The machine learning system may identify a number of saturated pixels in each image and classify each of the images as a saturated image or a non-saturated image based on the number of saturated pixels. The machine learning system may then select the non-saturated image with the highest SNR as the ground truth image, and the non-saturated images with lower SNRs as the input images, to be used for training the neural network.
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2.发明申请ACTIVE MATRIX CAPACITIVE FINGERPRINT SENSOR WITH 1-TFT PIXEL ARCHITECTURE FOR DISPLAY INTEGRATION 有权具有1-TFT像素结构的主动矩阵电容指纹传感器，用于显示整合公开(公告)号：US20170003777A1
公开(公告)日：2017-01-05
申请号：US14788604
申请日：2015-06-30
CPC分类号： G06F3/044 , G06F3/0412 , G06F3/0416 , G06K9/0002
摘要： Embodiments described herein include a method for operating an input device by applying a charge voltage to a sense element through a first transistor that is between the sense element and a column output line and a first switch that is between the column output line and a drive voltage. The method also includes storing an electric charge on the sense element, wherein the electric charge comprises a magnitude corresponding to a feature of an input object. The method also includes driving a gate terminal of the first transistor low and disconnecting the charge voltage via the first switch. The method further includes transferring the electric charge to a feedback capacitor.
摘要翻译： 本文描述的实施例包括一种用于通过在感测元件和列输出线之间的第一晶体管和位于列输出线和驱动电压之间的第一开关向感测元件施加充电电压来操作输入器件的方法 。 该方法还包括在感测元件上存储电荷，其中电荷包括与输入对象的特征对应的幅度。 该方法还包括将第一晶体管的栅极端子驱动为低电平，并通过第一开关断开充电电压。 该方法还包括将电荷转移到反馈电容器。
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公开(公告)号：US20150324036A1
公开(公告)日：2015-11-12
申请号：US14804193
申请日：2015-07-20
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044
摘要： An input device comprises a first plurality of sensor electrodes, a second plurality of sensor electrodes, and a processing system. The processing system comprises a first integrated circuit, a second integrated circuit, and a central controller. The first integrated circuit is coupled to the first plurality of sensor electrodes and configured to receive first resulting signals therewith. The second integrated circuit is coupled to the second plurality of sensor electrodes and configured to receive second resulting signals therewith. The central controller is communicatively coupled to the first and second integrated circuits. The central controller is configured to receive the first resulting signals from the first integrated circuit and the second resulting signals from the second integrated circuit and is configured to determine positional information from the first resulting signals and the second resulting signals and to communicate the positional information to a host processor.
摘要翻译： 输入装置包括第一多个传感器电极，第二多个传感器电极和处理系统。 处理系统包括第一集成电路，第二集成电路和中央控制器。 第一集成电路耦合到第一多个传感器电极并且被配置为用其接收第一结果信号。 第二集成电路耦合到第二多个传感器电极并且被配置为用其接收第二结果信号。 中央控制器通信地耦合到第一和第二集成电路。 中央控制器被配置为从第一集成电路接收第一结果信号和来自第二集成电路的第二结果信号，并且被配置为从第一结果信号和第二结果信号确定位置信息，并将位置信息传送到 一个主机处理器。
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公开(公告)号：US20150115977A1
公开(公告)日：2015-04-30
申请号：US14067863
申请日：2013-10-30
CPC分类号： G01R27/2605 , G01R35/005 , G06F3/044
摘要： The embodiments herein are generally directed to using a current-mode CBC circuit to maintain a voltage bias setting at a receiver when performing capacitive sensing. To do so, the CBC circuit may compensate for the change in voltage at a receiver by providing a current at the input of the receiver. Instead of using a passive CBC capacitor for each receiver, the input device may use a single CBC capacitor and a plurality of current mirrors to source and sink the current required to correct the input voltage at a plurality of receivers. As a result, the current-mode CBC circuit includes only one passive capacitor (or bank of capacitors) and a plurality of current mirrors which may provide space and cost benefits relative to a CBC circuit that uses a passive capacitor (or bank of capacitors) for each receiver channel.
摘要翻译： 本文的实施例通常涉及使用电流模式CBC电路来在执行电容感测时维持接收器处的电压偏置设置。 为此，CBC电路可以通过在接收机的输入端提供电流来补偿接收机的电压变化。 代替对每个接收机使用无源CBC电容器，输入装置可以使用单个CBC电容器和多个电流镜来源和吸收在多个接收器处校正输入电压所需的电流。 结果，电流模式CBC电路仅包括一个无源电容器（或电容器组）和多个电流镜，其可以相对于使用无源电容器（或电容器组）的CBC电路提供空间和成本优势， 对于每个接收器通道。
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公开(公告)号：US20140152324A1
公开(公告)日：2014-06-05
申请号：US14085606
申请日：2013-11-20
IPC分类号： G01R27/26
CPC分类号： G01R27/2605 , G06F3/0416 , G06F3/044
摘要： A processing system for a transcapacitive sensing device comprises a plurality of sensor electrodes sectioned by a seam, a first sensor electrode integrated circuit, and a second sensor electrode integrated circuit. The plurality of sensor electrodes comprises a plurality of transmitter electrodes intersecting a plurality of receiver electrodes. The first sensor electrode integrated circuit is communicatively coupled to a first subset of the plurality of sensor electrodes. The second sensor electrode integrated circuit is communicatively coupled to a second subset of the plurality of sensor electrodes. The first sensor electrode integrated circuit and the second sensor electrode integrated circuit are configured to operate the plurality of sensor electrodes in synchrony to transmit with the plurality of transmitter electrodes a set of transmitter signals and receive with the plurality of receiver electrodes a set of responses corresponding to the set of transmitter signals.
摘要翻译： 一种用于转录感测装置的处理系统包括由接缝分割的多个传感器电极，第一传感器电极集成电路和第二传感器电极集成电路。 多个传感器电极包括与多个接收器电极相交的多个发射器电极。 第一传感器电极集成电路通信地耦合到多个传感器电极的第一子集。 第二传感器电极集成电路通信地耦合到多个传感器电极的第二子集。 第一传感器电极集成电路和第二传感器电极集成电路被配置为同步地操作多个传感器电极以与多个发射器电极一起传送一组发射器信号，并且与多个接收器电极接收一组对应的响应 到发射机信号的集合。
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6.发明申请公开(公告)号：US20180129344A1
公开(公告)日：2018-05-10
申请号：US15864806
申请日：2018-01-08
CPC分类号： G06F3/0416 , H03M3/462
摘要： A processing system that includes a sigma-delta converter and a filter unit that applies a matched filter to the output of the sigma-delta converter. The processing system drives sensor electrodes for capacitive sensing and receives resulting signals with the sensor electrodes in response. The processing system applies these resulting signals to sigma-delta converters. The matched filter boosts the signal-to-noise ratio of the signal received from the sigma-delta converter, thereby improving the ability to sense presence of an input object. The filter unit may apply different, customized matched filters for different capacitive pixels to improve the signal-to-noise ratio of each capacitive pixel in a customized manner.
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公开(公告)号：US20200321377A1
公开(公告)日：2020-10-08
申请号：US16375502
申请日：2019-04-04
发明人： Kirk HARGREAVES
IPC分类号： H01L27/146 , G01N21/90
摘要： A processing system for an optical sensing device may comprise receiver circuitry and a determination module. The processing system may also include drive circuitry configured to drive a light source to emit light. The receiver circuitry is coupled to a photodetector, and the receiver circuitry is configured to acquire a resulting signal from the photodetector, and generate a measurement of light received by the photodetector based on the resulting signal. The receiver circuitry includes high-pass filter circuitry configured to high-pass filter the resulting signal to generate a high-pass filtered signal based. The determination module is configured to generate a light measurement based on the high-pass filtered signal.
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公开(公告)号：US20170005646A1
公开(公告)日：2017-01-05
申请号：US14788677
申请日：2015-06-30
发明人： Kirk HARGREAVES
IPC分类号： H03K5/156 , H03K3/037 , H03K5/24 , G06F3/0354
CPC分类号： H03K5/1565 , G06F3/00 , G06F3/03545 , G06F3/044 , G06F3/046 , H03K3/017 , H03K3/037 , H03K4/94 , H03K5/02 , H03K5/04 , H03K5/08 , H03K5/24 , H03K7/08
摘要： This disclosure generally provides a system, active input device, and method for generating an amplified square wave signal based on an input signal. The method comprises generating a pulse signal based on the input signal, and driving a switching signal based on the pulse signal to control a first switch. A pulse width of the pulse signal is adaptively controlled using a control signal generated based on the amplified square wave signal. An output terminal of the first switch is coupled with a second switch, and the switching signal controls current entering into the second switch. The method further comprises driving the input signal to control a third switch coupled with the second switch. The amplified square wave signal is generated at the second output terminal based on the switching signal and on the input signal.
摘要翻译： 本公开通常提供一种用于基于输入信号产生放大的方波信号的系统，有源输入装置和方法。 该方法包括基于输入信号生成脉冲信号，并且基于脉冲信号驱动开关信号以控制第一开关。 使用基于放大的方波信号生成的控制信号自适应地控制脉冲信号的脉冲宽度。 第一开关的输出端与第二开关耦合，开关信号控制进入第二开关的电流。 该方法还包括驱动输入信号以控制与第二开关耦合的第三开关。 基于切换信号和输入信号，在第二输出端产生放大的方波信号。
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公开(公告)号：US20150346896A1
公开(公告)日：2015-12-03
申请号：US14292842
申请日：2014-05-31
发明人： Kirk HARGREAVES
CPC分类号： G06F3/0416 , G06F3/0412 , G06F3/044
摘要： Embodiments of the present invention generally provide a method of input sensing with a sensor electrode. The method includes driving an input sensing signal to charge the sensor electrode and sampling a first voltage associated with the sensor electrode. The method further includes removing charge from the sensor electrode when the first voltage is above a threshold voltage, adding charge to the sensor electrode when the first voltage is below the threshold voltage, determining a number of times charge is removed from the sensor electrode, and determining a number of times charge is added to the sensor electrode. The method further includes determining positional information based on the number of times charge is removed from the sensor electrode and the number of times charge is added to the sensor electrode.
摘要翻译： 本发明的实施例通常提供一种使用传感器电极的输入感测的方法。 该方法包括驱动输入感测信号以对传感器电极充电并对与传感器电极相关联的第一电压进行采样。 该方法还包括当第一电压高于阈值电压时从传感器电极去除电荷，当第一电压低于阈值电压时，向传感器电极增加电荷，确定电荷从传感器电极移除的次数，以及 确定电荷被添加到传感器电极的次数。 该方法还包括基于从传感器电极去除电荷的次数以及将电荷添加到传感器电极的次数来确定位置信息。
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公开(公告)号：US20180204037A1
公开(公告)日：2018-07-19
申请号：US15612250
申请日：2017-06-02
IPC分类号： G06K9/00
CPC分类号： G06K9/0002
摘要： Embodiments herein describe an input device that includes a rectangular array of sensor electrodes connected to sensor modules that measure capacitive sensing signals corresponding to the electrodes. When performing code division multiplexing (CDM), multiple sensor electrodes are coupled to the same sensor module. As such, the sensor module generates a measurement that represents the sum of the charges on the sensor electrodes rather than an individual charge on a single sensor electrode. By repeatedly sensing multiple sensor electrodes in parallel, the input device can determine a change of capacitance for each individual sensor electrode.
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