AGC Circuit for an Echo Cancelling Circuit
    51.
    发明申请
    AGC Circuit for an Echo Cancelling Circuit 有权
    用于回波消除电路的AGC电路

    公开(公告)号:US20130336494A1

    公开(公告)日:2013-12-19

    申请号:US13785205

    申请日:2013-03-05

    CPC classification number: H03G3/20 H03G9/005 H03G9/025

    Abstract: An amplifier circuit and a method of amplification using automatic gain control (AGC) are disclosed. A method for reducing distortions incurred by an audio signal when being rendered by an electronic device is described. The method comprises receiving an input signal; determining signal strength; determining a frequency-dependent AGC filter; wherein the frequency-dependent AGC filter is adapted to selectively attenuate the input signal within a number N of predetermined frequency ranges, according to corresponding N degrees of attenuation; wherein N predetermined frequency ranges depend upon a rendering characteristic of the electronic device; and wherein the N-degrees of attenuation depend upon the signal strength; and attenuating the input signal using the frequency-dependent AGC filter to obtain an output signal for rendering by the electronic device.

    Abstract translation: 公开了放大器电路和使用自动增益控制(AGC)的放大方法。 描述了当由电子设备渲染时减少由音频信号引起的失真的方法。 该方法包括接收输入信号; 确定信号强度; 确定频率相关的AGC滤波器; 其中所述频率相关AGC滤波器适于根据相应的N衰减度来选择性地衰减N个预定频率范围内的输入信号; 其中N个预定频率范围取决于电子设备的呈现特性; 并且其中所述N度的衰减取决于所述信号强度; 并使用频率依赖的AGC滤波器来衰减输入信号,以获得用于由电子设备渲染的输出信号。

    Bypass Control in a DC-to-DC Converter
    52.
    发明申请
    Bypass Control in a DC-to-DC Converter 审中-公开
    DC-DC转换器旁路控制

    公开(公告)号:US20130193941A1

    公开(公告)日:2013-08-01

    申请号:US13750489

    申请日:2013-01-25

    Inventor: Michele DeFazio

    Abstract: The present document relates to switched power supplies. In particular, the present document relates to a method and system for controlling a bypass transistor in a DC-to-DC converter. A power converter configured to convert an input voltage at an input of the power converter into an output voltage at an output of the power converter is described. The power converter comprises a DC-to-DC converter comprising a high side switch; a bypass transistor parallel to the DC-to-DC converter, configured to couple a load at the output of the power converter to the input voltage during an on-state of the bypass transistor; and current sensing means configured to sense a current through the high side switch; wherein the bypass transistor is controlled based at least on the sensed current through the high side switch.

    Abstract translation: 本文件涉及开关电源。 特别地,本文件涉及用于控制DC-DC转换器中的旁路晶体管的方法和系统。 电力转换器被配置为将功率转换器的输入端的输入电压转换为功率转换器的输出端的输出电压。 所述功率转换器包括DC-DC转换器,其包括高侧开关; 与所述DC-DC转换器并联的旁路晶体管,被配置为在所述旁路晶体管的导通状态期间将所述功率转换器的输出端的负载耦合到所述输入电压; 以及电流感测装置,被配置为感测通过所述高侧开关的电流; 其中所述旁路晶体管至少基于通过所述高侧开关的感测电流来控制。

    Magnetic senor digital processing interface for electrical motor application
    53.
    发明申请
    Magnetic senor digital processing interface for electrical motor application 有权
    用于电机应用的磁传感器数字处理接口

    公开(公告)号:US20040207392A1

    公开(公告)日:2004-10-21

    申请号:US10420592

    申请日:2003-04-22

    Inventor: Juergen Kernhof

    CPC classification number: G01D5/24404

    Abstract: A system and methods for an interface for magnetic sensors to determine a rotational angle has been achieved. Said interface can be used for any kind of magnetic sensors providing analog signals of the sine and cosine values of the angle to be determined. Said analog signals are being processed in two measurement paths for the sine and cosine signal each until the desired angle is computed by a CORDIC processor. The first stage of said measurement path is the conversion of the sine and cosine signals from analog to digital by 2nd order delta-sigma modulators with an over-sampling ratio. A low-pass decimation filter with sinc3 characteristic performs the digital value computation. The next stage normalizes the digitized sine and cosine values to correct offset and scaling deviations. Said CORDIC processor computes the angle to be determined by decomposing the desired rotation angle into iterations of pre-defined elementary rotation angles performing the rotation operation by simple shift-and-add operations replacing multiplication/division operations and the magnitude of the vector MAGnull{square root}{square root over (sin2nullcos2)} using the output from said pair of normalization stages.

    Abstract translation: 已经实现了用于确定旋转角度的用于磁传感器的接口的系统和方法。 所述接口可用于提供要确定的角度的正弦和余弦值的模拟信号的任何种类的磁性传感器。 所述模拟信号正在用于正弦和余弦信号的两个测量路径中进行处理,直到所需角度由CORDIC处理器计算。 所述测量路径的第一阶段是通过具有过采样比的2阶Δ-Σ调制器将正弦和余弦信号从模拟到数字的转换。 具有sinc <3>特性的低通抽取滤波器执行数字值计算。 下一阶段将数字化正弦和余弦值归一化,以校正偏移和缩放偏差。 所述CORDIC处理器通过将代替乘法/除法运算的简单移位和加法运算以及向量的大小MAG = { 平方根} {平方根超过(sin <2> + cos <2>)},使用所述一对归一化阶段的输出。

    Active subscriber information module
    54.
    发明申请
    Active subscriber information module 失效
    活动用户信息模块

    公开(公告)号:US20040204088A1

    公开(公告)日:2004-10-14

    申请号:US10163708

    申请日:2002-06-06

    Inventor: Dave Dearn

    CPC classification number: G05F1/46

    Abstract: This invention provides a circuit and a method for interfacing a subscriber information module, SIM to a base band controller for a mobile phone. It provides voltage level shifting to allow a low voltage base band controller chip to interface to a higher voltage SIM card. The higher voltage bus goes to the SIM card of a mobile phone. The subscriber information module typically contains personal information such as telephone number, identification codes and pin numbers. The circuit of this invention uses active transistor pull-down and pull-up mechanisms. The active pull-up is active for less than one bit time so that the SIM card sees only a 20 kilo ohm resistor allowing performances equal to or better than ISO7816 specifications.

    Abstract translation: 本发明提供了一种用于将用户信息模块SIM与用于移动电话的基带控制器接口的电路和方法。 它提供电压电平转换,以允许低电压基带控制器芯片与更高电压的SIM卡接口。 较高电压的总线到达手机的SIM卡。 用户信息模块通常包含个人信息,例如电话号码,识别码和引脚号码。 本发明的电路使用有源晶体管下拉和上拉机制。 主动上拉功能在一个以上的时间内有效,因此SIM卡只能看到一个20千欧电阻器,允许性能等于或优于ISO7816规范。

    Simultaneous readout of CMOS APS imagers
    55.
    发明申请
    Simultaneous readout of CMOS APS imagers 有权
    同时读取CMOS APS成像器

    公开(公告)号:US20040189844A1

    公开(公告)日:2004-09-30

    申请号:US10744566

    申请日:2003-12-23

    CPC classification number: H04N9/045 H04N5/345 H04N5/3456 H04N5/3765

    Abstract: A new method of reading an imager is achieved. The method comprises providing an imager array comprising n rows and m columns where a pair of rows can be read during a single row access time. A first image field is completed by sequentially reading and storing pixel values of pairs of adjacent rows of the imager array. The reading begins at a first row, and the reading stops when less than three rows are unread. Thereafter pixel values of the next row are read and not stored. Thereafter pixel values of the first row of the imager array are read and not stored. A second image field is completed by sequentially reading and storing pixel values of pairs of adjacent rows. The reading begins at the second row, the reading stops when less than two rows are unread.

    Abstract translation: 实现了读取成像器的新方法。 该方法包括提供包括n行m列的成像器阵列,其中在单行访问时间期间可以读取一对行。 通过顺序读取和存储成像器阵列的相邻行对的像素值来完成第一图像场。 读数从第一行开始,当未读取少于三行时,读数停止。 此后读取并不存储下一行的像素值。 此后,读取并不存储成像器阵列的第一行的像素值。 通过顺序读取和存储相邻行对的像素值来完成第二图像场。 读数从第二行开始,当未读取少于两行时,读数停止。

    HIGH QUALITY PARALLEL RESONANCE OSCILLATOR
    56.
    发明申请
    HIGH QUALITY PARALLEL RESONANCE OSCILLATOR 有权
    高品质平行谐振振荡器

    公开(公告)号:US20040113709A1

    公开(公告)日:2004-06-17

    申请号:US10337019

    申请日:2003-01-06

    CPC classification number: H03B5/364

    Abstract: A highly stable single chip resonator controlled oscillator with automatic amplitude control and biasing is designed for manufacture with monolithic integrated circuit technologies. Analog and digital output buffers with elaborate control for power saving purposes and sophisticated start-up and power-up circuits ensure, that a crystal controlled oscillation is safely induced at start-up and that the amplitude of oscillation is continuously controlled during operation to reach low phase noise and reduce power consumption of the circuit.

    Abstract translation: 具有自动幅度控制和偏置的高度稳定的单片谐振器控制振荡器设计用于采用单片集成电路技术制造。 模拟和数字输出缓冲器具有精心控制功率节省目的和复杂的启动和上电电路,确保了启动时安全地引发晶体振荡,振荡幅度在运行期间持续控制,达到低电平 相位噪声并降低电路的功耗。

    Center of gravity compensation of Class-D amplifier
    57.
    发明申请
    Center of gravity compensation of Class-D amplifier 有权
    D类放大器的重心补偿

    公开(公告)号:US20040113684A1

    公开(公告)日:2004-06-17

    申请号:US10350836

    申请日:2003-01-24

    Abstract: In a Class-D Amplifier with PCM (Pulse Code Modulated) input signal, the output pulse width may be adjusted to provide a constant time-voltage-area or the output pulse width may have one of several discrete values to provide a multi-level output system. A fundamental idea of this disclosure is to assure the center of each output pulse is always positioned at the nominal clock or with a fixed delay relative to the nominal clock. Said Class-D Amplifier typically converts the input signal into PDM (Pulse Density Modulated) pulses with a Sigma Delta Modulator and typically drives the output load with an H-Bridge.

    Abstract translation: 在具有PCM(脉冲编码调制)输入信号的D类放大器中,可以调节输出脉冲宽度以提供恒定的时间电压面积,或者输出脉冲宽度可以具有几个离散值之一,以提供多级 输出系统。 本公开的基本思想是确保每个输出脉冲的中心总是位于标称时钟或相对于标称时钟的固定延迟。 所述D类放大器通常使用Sigma Delta调制器将输入信号转换为PDM(脉冲密度调制)脉冲,并通常用H桥驱动输出负载。

    Battery pack electronics assembly
    58.
    发明申请
    Battery pack electronics assembly 审中-公开
    电池组电子组件

    公开(公告)号:US20030224223A1

    公开(公告)日:2003-12-04

    申请号:US10163666

    申请日:2002-06-06

    Abstract: A removable battery package incorporating electronic functions and a method to assemble said battery package is achieved. The battery package comprises one or more rigid or flexible battery cells of various shape and a smart card being wrapped around said battery cells to form an inside housing of the battery package casing. Said smart card could have customised dimensions to suit the battery cell and battery pack dimensions and could have the external connections on one side or on both sides. A cold welding process is possible to provide the connections from the battery tabs to said smart card.

    Abstract translation: 实现了具有电子功能的可拆卸电池组件和组装所述电池组件的方法。 电池组包括一个或多个各种形状的刚性或柔性电池单元,以及围绕所述电池单元缠绕的智能卡,以形成电池组壳体的内部壳体。 所述智能卡可以具有适合电池单元和电池组尺寸的定制尺寸,并且可以在一侧或两侧具有外部连接。 冷焊工艺可以提供从电池接头到所述智能卡的连接。

    LCD module identification
    60.
    发明申请
    LCD module identification 有权
    LCD模块识别

    公开(公告)号:US20030169222A1

    公开(公告)日:2003-09-11

    申请号:US10100753

    申请日:2002-03-19

    Inventor: Helmut Burkhardt

    CPC classification number: G09G5/006 G09G3/3611 G09G2370/042

    Abstract: A circuit and a method for an effective way to customize the display driver software of any type of LCD-display and any type of LCD-driver chip used in an LCD display system is achieved. This is important in a multiple sourcing environment where LCD driver chips and LCD modules from different vendors are used in LCD display systems. This is accomplished through identification and registration of the information relevant for the said software customization by storing said information in an LCD module identification register. A microprocessor controlling the LCD display system is reading this identification register and providing the software customization elements specific to the LCD-driver chip and to the LCD-module during an initialization step of the system.

    Abstract translation: 实现了用于定制任何类型的LCD显示器的显示驱动器软件和用于LCD显示系统中的任何类型的LCD驱动器芯片的有效方式的电路和方法。 这在多种采购环境中是重要的,其中来自不同供应商的LCD驱动器芯片和LCD模块用于LCD显示系统。 这通过将所述信息存储在LCD模块识别寄存器中来识别和登记与所述软件定制相关的信息来实现。 控制LCD显示系统的微处理器在系统的初始化步骤期间读取该识别寄存器并提供特定于LCD驱动器芯片和LCD模块的软件定制元件。

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