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1.发明申请公开(公告)号：US20180205352A1
公开(公告)日：2018-07-19
申请号：US15873532
申请日：2018-01-17
申请人： KAPIK INC.
IPC分类号： H03F3/217 , H03F1/06 , H03F3/24 , H03L7/081 , H03M3/02 , H03M7/30 , H04B14/06 , H04L27/36 , G06F7/60
CPC分类号： H03F3/2171 , G06F7/602 , H03F1/06 , H03F3/185 , H03F3/2173 , H03F3/24 , H03F2200/03 , H03F2200/331 , H03L7/0816 , H03M3/02 , H03M3/502 , H03M7/3011 , H03M7/3015 , H04B14/062 , H04L27/36
摘要： An audio amplifier system includes a delta-sigma modulator configured to receive an m-bit digital audio input signal and to generate a pulse density modulated signal based on the m-bit digital audio input signal. An analog power stage is coupled to the delta-sigma modulator to receive the pulse density modulated signal and amplify the pulse density modulated signal to generate an amplified pulse density modulated signal. A feedback circuit is coupled to the delta-sigma modulator and the analog power stage. The feedback circuit is configured to receive the amplified pulse density modulated signal and the pulse density modulated signal and to determine a digital error signal representative of a difference between the amplified pulse density modulated signal and the pulse density modulated signal. The feedback circuit is further configured to provide the digital error signal to the delta-sigma modulator for applying the digital error signal to a representation of the m-bit digital audio input signal.
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公开(公告)号：US20150015428A1
公开(公告)日：2015-01-15
申请号：US14334919
申请日：2014-07-18
申请人： KAPIK INC.
CPC分类号： H03M1/1245 , H03M1/0626 , H03M1/0631 , H03M1/0639 , H03M1/12 , H03M1/1215 , H03M3/458
摘要： An analog to digital conversion system is disclosed which converts an analog signal to a digital representation thereof at a first sampling rate by distributing the analog signal to at least two signal paths, at least one signal path including a limiting mixer to mix the signal with a respective selected square wave and a smoothing (low pass) filter to filter the mixed signal before providing the mixed and filtered signal to a subconverter, the subconverter having a sampling rate less than the first sampling rate, and a digital matrix filter to combine the digital output of each subconverter to form a digital representation of the analog signal as sampled at the first rate.
摘要翻译： 公开了一种模数转换系统，其通过将模拟信号分配到至少两个信号路径将模拟信号转换成其第一采样率的数字表示，至少一个信号路径包括限制混频器以将信号与 相应选择的方波和平滑（低通）滤波器，以在将混合和滤波的信号提供给子转换器之前对混合信号进行滤波，该子转换器具有小于第一采样率的采样率，以及数字矩阵滤波器，以将数字 每个子转换器的输出以形成以第一速率采样的模拟信号的数字表示。
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公开(公告)号：US20160103524A1
公开(公告)日：2016-04-14
申请号：US14878202
申请日：2015-10-08
申请人： KAPIK INC.
IPC分类号： G06F3/044 , G06F3/0484 , G06F3/041
CPC分类号： G06F3/044 , G06F3/0416 , G06F2203/04104
摘要： A multi-touch sensing system and a method for estimating a location of at least one touch point are provided. The multi-touch sensing system includes a panel, a grid of conductor disposed on the panel, a driver array connected to the grid, a receiver array connected to the grid, a signal processing system, and a controller. The method involves transmitting drive signals to the grid, receiving signals from the grid, estimating a capacitance, and transforming the capacitance into touch coordinates.
摘要翻译： 提供一种用于估计至少一个触摸点的位置的多点触摸感测系统和方法。 多点触摸感测系统包括面板，布置在面板上的导体格栅，连接到电网的驱动器阵列，连接到电网的接收器阵列，信号处理系统和控制器。 该方法包括将驱动信号传输到电网，从电网接收信号，估计电容，并将电容变换为触摸坐标。
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公开(公告)号：US20180103215A1
公开(公告)日：2018-04-12
申请号：US15730208
申请日：2017-10-11
申请人： KAPIK INC.
CPC分类号： H04N5/341 , H04N5/23241 , H04N5/3696 , H04N5/3745
摘要： An imaging device includes an imager to capture an image, a controller to control the imager to define a dynamic electronic fovea. The dynamic electronic fovea is defined by a subset of pixels of the imager. The subset of pixels for the fovea is driven differently from a remainder of pixels of the imager.
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公开(公告)号：US20160103550A1
公开(公告)日：2016-04-14
申请号：US14878229
申请日：2015-10-08
申请人： KAPIK INC.
IPC分类号： G06F3/041 , G06F3/047 , G06F3/0488 , G06F3/044
摘要： In capacitive touch panels arrays, self and mutual capacitances of embedded wires in rows and columns are measured to estimate the position of fingers, styli and the like. For precise measurement of position and for sensitivity to small objects it is desirable to have these wires closely spaced; but this causes the number of connections to the panel to become large and problematic. Sensing lines may share connections by permuting their order, thus reducing the number of pins required on a touch-panel controller chip; in cabling between a touch panel and its controller; and in memory requirements for a touch-panel controller.
摘要翻译： 在电容式触摸屏阵列中，测量行和列中的嵌入线的自身和互电容以估计手指，触针等的位置。 为了精确测量位置和对小物体的敏感性，希望将这些线紧密隔开; 但是这导致与面板的连接数量变大并且有问题。 传感线路可以通过排列顺序来共享连接，从而减少触摸面板控制器芯片所需的引脚数量; 在触摸面板和其控制器之间布线; 以及触摸屏控制器的内存要求。
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公开(公告)号：US20160103525A1
公开(公告)日：2016-04-14
申请号：US14878254
申请日：2015-10-08
申请人： KAPIK INC.
IPC分类号： G06F3/044
CPC分类号： G06F3/044 , G06F3/0416
摘要： In capacitive touch panels arrays, self- and mutual capacitances of embedded sense lines in rows and columns are measured to estimate the position of probes such as fingers, styli and the like. Signals are driven onto the sense lines in order to estimate capacitances, but it is desired to keep these signals as weak as possible in order to minimize power consumption, voltage drive requirements and electromagnetic interference. Accurate detection of the position of the probe, particularly with weak signals, is rendered difficult by its motion. Techniques are proposed for power-efficient drive signals and related techniques proposed that are operable to estimate velocity. Dual receive structures with similar properties are proposed.
摘要翻译： 在电容触摸面板阵列中，测量行和列中嵌入的感测线的自相互电容和相互电容，以估计诸如手指，测针等的探针的位置。 信号被驱动到感测线上以估计电容，但是希望将这些信号尽可能地保持为弱，以便最小化功率消耗，电压驱动要求和电磁干扰。 探测器的位置，特别是弱信号的位置的精确检测由于其运动而变得困难。 针对功率有效的驱动信号提出了技术，并提出了可用于估计速度的相关技术。 提出了具有相似属性的双接收结构。
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