公开(公告)号：US08218686B1

公开(公告)日：2012-07-10

申请号：US12420470

申请日：2009-04-08

申请人： Sergey Timofeev ,  Atul Salhotra ,  Kedar Shirali ,  Srinivasa H. Garlapati

发明人： Sergey Timofeev ,  Atul Salhotra ,  Kedar Shirali ,  Srinivasa H. Garlapati

IPC分类号： H04L25/06 ,  H04L25/10

CPC分类号： H04L25/062 ,  H03D2200/0047

摘要： An apparatus has front end circuitry to demodulate a radio frequency signal and to produce a baseband signal, the radio frequency signal being periodic and having a predetermined period. An analog-to-digital converter converts the baseband signal into a digital signal, the digital signal being periodic and having the predetermined period. A DC offset adjustment circuit includes a filter for estimating a DC offset contained in the digital signal based only on digital samples in a sample period having a length equal to the predetermined period. An adder removes the estimated DC offset from the digital signal. A method of operating such an apparatus is also disclosed.

摘要翻译： 一种装置具有用于解调射频信号并产生基带信号的前端电路，射频信号是周期性的并且具有预定周期。 模数转换器将基带信号转换为数字信号，数字信号是周期性的并且具有预定周期。 DC偏移调整电路包括用于仅在具有等于预定周期的长度的采样周期中的数字样本上估计包含在数字信号中的DC偏移的滤波器。 加法器从数字信号中去除估计的直流偏移。 还公开了一种操作这种装置的方法。

公开(公告)号：US08526541B1

公开(公告)日：2013-09-03

申请号：US13530285

申请日：2012-06-22

申请人： Sergey Timofeev ,  Atul Salhotra ,  Kedar Shirali ,  Srinivasa H. Garlapati

发明人： Sergey Timofeev ,  Atul Salhotra ,  Kedar Shirali ,  Srinivasa H. Garlapati

IPC分类号： H04L25/06 ,  H04L25/10

CPC分类号： H04L25/062 ,  H03D2200/0047

摘要： An apparatus has demodulation circuitry to demodulate a radio frequency signal and produce a baseband signal, wherein the radio frequency signal comprises a periodic signal having a predetermined period. An analog-to-digital converter converts the baseband signal into a digital signal that comprises a periodic signal having the predetermined period. A first DC offset adjustment circuit estimates a DC offset contained in the digital signal based on digital samples in a sample period having a length equal to the predetermined period. A second DC offset adjustment circuit estimates the DC offset contained in the digital signal. A selection circuit selects one of the first DC offset adjustment circuit or the second DC offset adjustment circuit to be used to estimate the DC offset contained in the digital signal.

摘要翻译： 一种装置具有用于解调射频信号并产生基带信号的解调电路，其中射频信号包括具有预定周期的周期信号。 模数转换器将基带信号转换成包括具有预定周期的周期信号的数字信号。 第一DC偏移调整电路基于长度等于预定周期的采样周期中的数字采样来估计包含在数字信号中的DC偏移。 第二DC偏移调整电路估计包含在数字信号中的DC偏移。 选择电路选择要用于估计包含在数字信号中的DC偏移的第一DC偏移调整电路或第二DC偏移调整电路中的一个。

公开(公告)号：US08705679B1

公开(公告)日：2014-04-22

申请号：US13053850

申请日：2011-03-22

申请人： Swaroop Venkatesh ,  Sergey Timofeev ,  Sudhir Srinivasa ,  Atul Salhotra ,  Rohit U. Nabar

发明人： Swaroop Venkatesh ,  Sergey Timofeev ,  Sudhir Srinivasa ,  Atul Salhotra ,  Rohit U. Nabar

IPC分类号： H04L7/06

CPC分类号： H04L27/2656 ,  H04L27/2672 ,  H04L27/2675

摘要： In a method for detecting a synchronization field in an orthogonal frequency division multiplexing (OFDM) signal, a plurality of discrete Fourier transform (DFT) values corresponding to the OFDM signal are generated. A plurality of magnitude or power values corresponding to the plurality of DFT values is determined. It is determined whether the plurality of magnitude or power values corresponds to a pattern of magnitude or power values. An indication that the synchronization field is detected in the OFDM signal is generated based on whether it is determined that the plurality of magnitude or power values correspond to the pattern of magnitude or power values.

摘要翻译： 在用于检测正交频分复用（OFDM）信号中的同步字段的方法中，生成与OFDM信号相对应的多个离散付里叶变换（DFT）值。 确定对应于多个DFT值的多个幅度或功率值。 确定多个量值或功率值是否对应于幅度或功率值的图案。 基于是否确定多个量值或功率值对应于幅度或功率值的图案，生成在OFDM信号中检测到同步场的指示。

公开(公告)号：US07973685B1

公开(公告)日：2011-07-05

申请号：US12638456

申请日：2009-12-15

申请人： Sergey Timofeev

发明人： Sergey Timofeev

IPC分类号： H03M1/06

CPC分类号： H03M1/0626 ,  H03M1/12

摘要： Methods, and other embodiments associated with signal filtering are described. According to one embodiment, an apparatus includes an analog-to-digital converter that generates a first digital component and a second digital component from an analog signal. A filter filters the first digital component and the second digital component to substantially align the phase of the first digital component and the phase of the second digital component.

摘要翻译： 描述了与信号滤波相关联的方法和其它实施例。 根据一个实施例，一种装置包括从模拟信号产生第一数字分量和第二数字分量的模数转换器。 A滤波器对第一数字分量和第二数字分量进行滤波，以使第一数字分量的相位和第二数字分量的相位基本上对准。

公开(公告)号：US20080062367A1

公开(公告)日：2008-03-13

申请号：US11980390

申请日：2007-10-31

申请人： Sergey Yakovenko ,  Victor Konovalov ,  Anatoly Muravsky ,  Sergey Timofeev

发明人： Sergey Yakovenko ,  Victor Konovalov ,  Anatoly Muravsky ,  Sergey Timofeev

IPC分类号： G02F1/1337

CPC分类号： G02F1/133707 ,  G02F1/133345 ,  G02F1/133753 ,  G02F2001/133757

摘要： The present invention is aimed to make displays with wide viewing angle possessing higher brightness in transmission mode and to develop more simple method for making such displays. This target is achieved by making in display with multiple pixels deflecting elements of dielectric material and depositing them over the electric conductive coating at least on one of the substrates the space between which is occupied by liquid crystal. Dielectric deflecting elements may be displaced along the perimeter of the pix as well as across its area. After applying electric voltage to the electrodes at the opposite substrates at the interface LC-dielectric deflecting dement distortions of the electric field arise with the component of electric field parallel to substrates.

摘要翻译： 本发明旨在制造在透射模式下具有较高亮度的宽视角的显示器，并开发更简单的制造这种显示器的方法。 该目标通过使多个像素偏转电介质材料的显示器进行显示并将其沉积在至少一个基板上的至少一个基板上，其中空间被液晶所占据。 电介质偏转元件可以沿着像素的周边以及其整个区域移位。 在接口LC处的相对基板处的电极施加电压之后，电场的电场分量与基板平行的电场产生电介质偏转。

公开(公告)号：US08571497B1

公开(公告)日：2013-10-29

申请号：US13297420

申请日：2011-11-16

申请人： Li Lin ,  Arnab Kumar Mitra ,  Daxiao Yu ,  Harish Ramamurthy ,  Sergey Timofeev ,  Lance Nagamine ,  Brian Bosso

发明人： Li Lin ,  Arnab Kumar Mitra ,  Daxiao Yu ,  Harish Ramamurthy ,  Sergey Timofeev ,  Lance Nagamine ,  Brian Bosso

IPC分类号： H01Q11/12 ,  H04B1/04

CPC分类号： H04W52/08 ,  H04B1/04 ,  H04B17/13 ,  H04B2001/0416

摘要： A radio frequency transmitting system includes a programmable amplifier, a power amplifier, a power detector, and a calibration module. The programmable amplifier is configured to amplify an input signal to generate an amplified signal. The power amplifier is configured to output a transmit signal in response to the amplified signal. The transmit signal has a transmit power. The power detector is configured to generate a power measurement in response to the transmit power. The calibration module is configured to implement a plurality of feedback loops to adjust a gain of the programmable amplifier in response to a difference between the power measurement and a desired transmit power. The calibration module is configured to select one of the plurality of feedback loops in response to the desired transmit power.

摘要翻译： 射频发射系统包括可编程放大器，功率放大器，功率检测器和校准模块。 可编程放大器被配置为放大输入信号以产生放大信号。 功率放大器被配置为响应于放大信号输出发射信号。 发射信号具有发射功率。 功率检测器被配置为响应于发射功率而产生功率测量。 校准模块被配置为实现多个反馈回路以响应于功率测量和期望的发射功率之间的差异来调节可编程放大器的增益。 校准模块被配置为响应于期望的发射功率来选择多个反馈回路之一。

公开(公告)号：US20050109986A1

公开(公告)日：2005-05-26

申请号：US10992245

申请日：2004-11-17

申请人： Tatyana Dutova ,  Alexey Nokel ,  Elena Sidorenko ,  Sergey Timofeev

发明人： Tatyana Dutova ,  Alexey Nokel ,  Elena Sidorenko ,  Sergey Timofeev

IPC分类号： C07D241/38 ,  C09B17/00 ,  C09B57/00 ,  C09K19/34 ,  G02F1/13 ,  C09K19/52 ,  C07D241/36 ,  C09K19/54

CPC分类号： C07D241/38 ,  C09B17/00 ,  C09B57/00 ,  C09B57/08 ,  C09K19/3452 ,  Y10T428/10 ,  Y10T428/1036 ,  Y10T428/1041

摘要： The present invention provides a series of new chemical compounds, lyotropic liquid crystal systems, materials, blends, mixtures, namely acenaphtho[1,2-b]quinoxaline sulfoderivatives of the general structural formula: wherein n is an integer in the range of 1 to 4; m is an integer in the range of 0 to 4; z is an integer in the range of 0 to 6, and m+z+n≦10; X and Y are individually selected from the group g of CH3, C2H5, OCH3, OC2H5, Cl, Br, OH, OCOCH3 NH2, NHCOCH3, NO2, F, CF3, CN, OCN, SCN, COOH, and CONH2; M is a counterion; and j is the number of counterions in the molecule.

摘要翻译： 本发明提供一系列新的化合物，溶致液晶体系，材料，共混物，混合物，即通式结构式的苊并[1,2-b]喹喔啉磺酸衍生物：其中n为1〜 4; m为0〜4的整数; z是0〜6的整数，m + z + n <= 10; X和Y分别选自CH 3，C 2 H 5，OCH 3，CH 3， OC 2 H 5，Cl，Br，OH，OCOCH 3 NH 2，NHCOCH 3， / SUB，NO 2，F，CF 3，CN，OCN，SCN，COOH和CONH 2; M是反抗; 并且j是分子中的抗衡离子的数目。

公开(公告)号：US20050012876A1

公开(公告)日：2005-01-20

申请号：US10854803

申请日：2004-05-27

申请人： Sergey Yakovenko ,  Victor Konovalov ,  Anatoly Muravsky ,  Sergey Timofeev

发明人： Sergey Yakovenko ,  Victor Konovalov ,  Anatoly Muravsky ,  Sergey Timofeev

IPC分类号： G02F1/1333 ,  G02F1/1337

CPC分类号： G02F1/133707 ,  G02F1/133345 ,  G02F1/133753 ,  G02F2001/133757

摘要： The present invention is aimed to make displays with wide viewing angle possessing higher brightness in transmission mode and to develop more simple method for making such displays. This target is achieved by making in display with multiple pixels deflecting elements (5, 6) of dielectric material and depositing them over the electric conductive coating at least on one of the substrates (1, 2) the space between which is occupied by liquid crystal. Dielectric deflecting elements (5, 6) may be displaced along the perimeter of the pix as well as across its area. After applying electric voltage to the electrodes (3) at the opposite substrates (1, 2) at the interface LC-dielectric deflecting dement distortions of the electric field arise with the component of electric field parallel to substrates.

摘要翻译： 本发明旨在制造在透射模式下具有较高亮度的宽视角的显示器，并开发更简单的制造这种显示器的方法。 该目标通过在电介质材料的多个像素偏转元件（5,6）上进行显示，并将其沉积在至少一个衬底（1,2）上的至少一个衬底（1,2）上而实现，其中空间被液晶占据 。 电介质偏转元件（5,6）可以沿着像素的周边以及其整个区域移位。 在接口LC处的相对基板（1,2）处向电极（3）施加电压之后，电场的电场分量与基板平行的电场产生电介质偏转。