公开(公告)号：US09438182B2

公开(公告)日：2016-09-06

申请号：US14358182

申请日：2012-10-30

Applicant: ST-Ericsson SA

Inventor： Carlo Crippa ,  Rossella Bassoli

IPC: H03F3/38 ,  H03F3/185 ,  H03F3/217 ,  H03K7/08

CPC classification number: H03F3/185 ,  H03F3/187 ,  H03F3/2175 ,  H03F3/45475 ,  H03F2200/165 ,  H03F2200/351 ,  H03F2200/78 ,  H03F2203/21112 ,  H03F2203/21196 ,  H03K7/08

Abstract: A digital class D amplifier (10) is disclosed, comprising a pulse width modulator (PW Mod) comprising: a digital loop filter (Loop F) adapted to receive an input signal (x[n]) and a feedback signal (fb[n]), the digital loop filter (Loop_F) being adapted to process at a clock frequency (f_s) said input and feedback signals for providing as output a filtered digital signal (w[n]); a PWM conversion module (PW_CM) having an input (24) for receiving the filtered digital signal (w[n]) and having a first output (25) connected to the digital loop filter (Loop F), the PWM conversion module being adapted for processing the filtered digital signal (w[n]) and providing at said first output (25) the feedback signal (fb[n]). The PWM conversion module (PW_CM) comprises: a first comparator (CMP_N) adapted to compare the filtered digital signal (w[n]) with a first reference triangular waveform (VTn[n]) for providing as output a first PWM signal (yn[n]), the first reference triangular waveform having a frequency (f_osc) much lower than said clock frequency (f.s); a second comparator (CMP_P) adapted to compare the filtered digital signal (w[n]) with a second reference triangular waveform (VTp[n]) for providing as output a second PWM signal (yp[n]), the second reference triangular waveform (VTp[n]) being the inverse of the first triangular waveform (VTn[n]), said first (yn[n]) and second (yp[n]) PWM signals representing a differential output pulse width modulated signal (yn[n],yp[n]).

Abstract translation: 公开了一种数字D类放大器（10），包括：脉冲宽度调制器（PW Mod），包括：适于接收输入信号（x [n]）和反馈信号（fb [n]）的数字环路滤波器 ]），所述数字环路滤波器（Loop_F）适于以时钟频率（f_s）处理所述输入和反馈信号，以提供经过滤波的数字信号（w [n]）作为输出; PWM转换模块（PW_CM），其具有用于接收经过滤波的数字信号（w [n]）并具有连接到数字环路滤波器（Loop F）的第一输出端25的输入端） 用于处理滤波后的数字信号（w [n]）并在所述第一输出端提供反馈信号（fb [n]）。 PWM转换模块（PW_CM）包括：第一比较器（CMP_N），适于将滤波后的数字信号（w [n]）与第一参考三角波形（VTn [n]）进行比较，以提供第一PWM信号 [n]），具有比所述时钟频率（fs）低得多的频率（f_osc）的第一参考三角波形; 适于将滤波后的数字信号（w [n]）与第二参考三角波形（VTp [n]）进行比较以用于提供第二PWM信号（yp [n]）作为输出的第二比较器（CMP_P），第二参考三角形 波形（VTp [n]）是第一三角波形（VTn [n]）的倒数，所述第一（yn [n]）和第二（yp [n]）PWM信号表示差分输出脉宽调制信号 [n]，yp [n]）。

公开(公告)号：US09425907B2

公开(公告)日：2016-08-23

申请号：US14433893

申请日：2013-11-07

Applicant: ST-Ericsson SA

Inventor： Achraf Dhayni ,  Christophe Arnal

IPC: H04B5/00 ,  H04B17/20 ,  H04L1/24 ,  H04B17/14 ,  H04B17/15 ,  H04B17/19 ,  H04B17/29 ,  H04B17/40

CPC classification number: H04B17/20 ,  H04B5/0031 ,  H04B17/14 ,  H04B17/15 ,  H04B17/19 ,  H04B17/29 ,  H04B17/408 ,  H04L1/243

Abstract: A method of self-test for a near-field communication (NFC) radio frequency (RF) front-end unit comprising one antenna driver and at least one unit from a group comprising one reader and one card emulator, the RF front-end unit being connected to a digital front-end unit, wherein the antenna driver and the unit are interconnected through a first connection line via their respective first input-output interface and are also interconnected through a second connection line via their respective second input-output interface, the digital front-end unit being connected to the second connection line, the method comprising: activating the antenna driver and the unit based on control signals; —generating a first signal onto the first connection line by modulating a respective first bitstream; —retrieving a second bitstream from the second connection line, by demodulating the first signal; and, —determining an outcome of the self-test by monitoring the demodulated signal.

Abstract translation: 一种用于近场通信（NFC）射频（RF）前端单元的自检的方法，包括一个天线驱动器和来自包括一个读取器和一个卡仿真器的组中的至少一个单元，所述RF前端单元 连接到数字前端单元，其中所述天线驱动器和所述单元经由其相应的第一输入 - 输出接口通过第一连接线互连，并且还经由其相应的第二输入 - 输出接口通过第二连接线互连， 所述数字前端单元连接到所述第二连接线，所述方法包括：基于控制信号激活所述天线驱动器和所述单元; - 通过调制相应的第一比特流来产生第一信号到第一连接线上; 通过解调第一信号，从第二连接线恢复第二比特流; 并且通过监视解调信号来确定自检的结果。

公开(公告)号：US09413580B2

公开(公告)日：2016-08-09

申请号：US14427816

申请日：2013-09-17

Applicant: ST-Ericsson SA

Inventor： Achraf Dhayni

IPC: H04L7/00 ,  H04L27/26 ,  H04L25/03

CPC classification number: H04L27/2665 ,  H04L25/03159 ,  H04L27/2662 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2682 ,  H04L2025/03414

Abstract: Receiver (RCV) adapted for compensating for Symbol Timing Offset when receiving OFDM symbols, over a communication channel (TC), comprising: means (REG, DFT, CMP) for detecting a first phase with no Inter-Symbol Interference, means (REG, DFT, CMP) for detecting a second phase with presence of Inter-Symbol Interference, means (REG, DFT, CMP) for compensating for said Symbol Timing Offset by estimating starting points of said received OFDM symbols as being one sample before the start of said second phase. The timing synchronization is achieved in frequency domain by monitoring amplitude variation of the demodulated subcarriers symbols, said variation being due to the presence of Inter Symbol Interference when the FFT window overlaps with the subsequent OFDM symbol.

Abstract translation: 用于在通信信道（TC）上接收OFDM符号时补偿符号定时偏移的接收机（RCV），包括：用于检测没有符号间干扰的第一相位的装置（REG，DFT，CMP），装置（REG， DFT，CMP），用于通过存在符号间干扰来检测第二相位，用于通过将所述接收的OFDM符号的起始点估计为所述接收的OFDM符号开始之前的一个样本来补偿所述符号定时偏移的装置（REG，DFT，CMP） 第二阶段 通过监视解调的副载波符号的幅度变化，在频域中实现定时同步，所述变化是由于当FFT窗口与随后的OFDM符号重叠时存在帧间干扰。

公开(公告)号：US09379784B2

公开(公告)日：2016-06-28

申请号：US14395249

申请日：2013-04-23

Applicant: ST-Ericsson SA

Inventor： Achraf Dhayni

IPC: H04B5/00 ,  G06K7/10 ,  G06K7/00

CPC classification number: H04B5/0062 ,  G06K7/0008 ,  G06K7/10237 ,  H04B5/0075

Abstract: A method for performing electromagnetic induction communication enables transmitting modulation data between communication devices. The method includes coupling a first antenna of a first communication device and a second antenna of a second communication device, generating a magnetic field by supplying a first current through the first antenna, and modulating the magnetic field according to the modulation data. The first current is regulated so as to be substantially constant, by introducing a regulating current, which is function of the magnetic field. The first communication device determines the modulation data from the regulating current.

Abstract translation: 用于执行电磁感应通信的方法使得能够在通信设备之间传送调制数据。 该方法包括：耦合第一通信设备的第一天线和第二通信设备的第二天线，通过提供通过第一天线的第一电流产生磁场，以及根据调制数据调制磁场。 通过引入作为磁场的功能的调节电流，将第一电流调节为基本恒定。 第一通信设备从调节电流确定调制数据。

公开(公告)号：US09367334B2

公开(公告)日：2016-06-14

申请号：US14251078

申请日：2014-04-11

Applicant: ST-Ericsson SA

Inventor： Nicolas Louboutin

IPC: G06F13/00 ,  G06F9/44 ,  G06F9/52

CPC classification number: G06F9/4411 ,  G06F9/52

Abstract: A communication device includes at least two output apparatuses, and an interface circuit configured as an interface between the at least two output apparatuses and software drivers supported by an operating system embedded within the communication device, so that the software drivers can access the output apparatuses. The interface circuit includes an access control circuit configured to temporarily allocate a first one of the at least two apparatuses with a first one of the software drivers, so that other ones of the software drivers cannot access the first output apparatus during its allocation to the first software driver. The interface circuit also includes shared resource circuits configured to dynamically direct communication from the first software driver to the temporarily allocated first output apparatus.

Abstract translation: 通信设备包括至少两个输出设备和被配置为在至少两个输出设备之间的接口和由嵌入在通信设备内的操作系统支持的软件驱动器之间的接口的接口电路，使得软件驱动器可以访问输出设备。 该接口电路包括访问控制电路，该访问控制电路被配置为利用软件驱动器中的第一个临时分配至少两个设备中的第一个，使得其他软件驱动程序在其分配到第一个时，不能访问第一输出设备 软件驱动。 接口电路还包括被配置为动态地指导从第一软件驱动器到临时分配的第一输出设备的通信的共享资源电路。

公开(公告)号：US20160118892A1

公开(公告)日：2016-04-28

申请号：US14889892

申请日：2014-06-02

Applicant: ST-Ericsson SA

Inventor： Philippe SIRITO-OLIVIER ,  Patrizia MILAZZO ,  Angelo NAGARI

IPC: H02M3/158 ,  H03F3/217

CPC classification number: H02M3/158 ,  H03F3/2173 ,  H03F3/2175

Abstract: A circuit comprising: —an output stage according to the invention; —a first control apparatus comprising a control stage of the first control apparatus is connected to the output stage; and, —a second control apparatus comprising a control stage of the second control apparatus is connected to the output stage; wherein, —when the control stage of the first control apparatus is connected to the output stage, the control stage of the second control apparatus is electrically disconnected from the output stage, the output stage being configured to operate in a first operating state; and, —when the control stage of the second control apparatus is connected to the output stage, the control stage of the first control apparatus is electrically disconnected from the output stage, the output stage being configured to operate in a second operating state. The output stage and the use of the output stage are also claimed.

Abstract translation: 一种电路，包括： - 根据本发明的输出级; - 包括第一控制装置的控制级的第一控制装置连接到输出级; 并且，包括所述第二控制装置的控制级的第二控制装置连接到所述输出级; 其中，当所述第一控制装置的控制级连接到所述输出级时，所述第二控制装置的所述控制级与所述输出级电断开，所述输出级被配置为在第一操作状态下操作; 以及 - 当所述第二控制装置的控制级连接到所述输出级时，所述第一控制装置的控制级与所述输出级电断开，所述输出级被配置为在第二操作状态下工作。 输出级和输出级的使用也被要求保护。

公开(公告)号：US09325297B2

公开(公告)日：2016-04-26

申请号：US14426762

申请日：2013-09-25

Applicant: ST-Ericsson SA

Inventor： Markus Suhonen

IPC: H04L27/00 ,  H03K3/012 ,  H03K5/06 ,  G05F1/66 ,  H04L7/00

CPC classification number: H03K3/012 ,  G05F1/66 ,  G06F1/04 ,  G06F1/3206 ,  H03K5/06 ,  H03K5/133 ,  H03K5/135 ,  H04L7/0037 ,  H04L7/0087 ,  H04L7/0091

Abstract: An integrated circuit includes a clock generation stage that generates a clock signal having a clock frequency dependent on a reference signal. A delay stage generates a delayed clock signal by delaying the clock signal. A control stage generates a control signal indicative of a delay of the delayed clock signal relative to the clock signal. A frequency divider generates a divided signal by dividing a dividend signal having a dividend frequency dependent on the reference signal. A power supply regulator supplies power to the frequency divider at a first power level, which is dependent on the control signal.

Abstract translation: 集成电路包括产生具有取决于参考信号的时钟频率的时钟信号的时钟产生级。 延迟级通过延迟时钟信号来产生延迟的时钟信号。 控制级产生指示延迟的时钟信号相对于时钟信号的延迟的控制信号。 分频器通过除除具有取决于参考信号的除数频率的除数信号来产生分频信号。 电源调节器以第一功率电平为分频器供电，这取决于控制信号。

公开(公告)号：US20160112236A1

公开(公告)日：2016-04-21

申请号：US14787325

申请日：2014-05-16

Applicant: ST-ERICSSON SA

Inventor： Achraf DHAYNI

IPC: H04L27/26

CPC classification number: H04L27/2663 ,  H04L27/2666

Abstract: A method for determining a symbol boundary in a data packet belonging to a received OFDM signal is provided. The data packet includes a first training filed and a second training field, which begins with a guard interval. The method includes detecting the beginning of the data packet, and starting an automatic gain control process. The method further includes, after the automatic gain control process is locked, determining autocorrelation peaks and estimating the symbol boundary from times of the autocorrelation peaks.

Abstract translation: 提供了一种用于确定属于接收的OFDM信号的数据分组中的符号边界的方法。 数据分组包括以保护间隔开始的第一训练场和第二训练场。 该方法包括检测数据包的开始，并开始自动增益控制处理。 该方法还包括在自动增益控制处理被锁定之后，确定自相关峰值并从自相关峰值的时间估计符号边界。

公开(公告)号：US09312859B2

公开(公告)日：2016-04-12

申请号：US14361833

申请日：2013-01-25

Applicant: ST-Ericsson SA

Inventor： Marcus Suhonen

IPC: H01Q11/12 ,  H03K19/0185 ,  H03K19/00 ,  H03K19/003 ,  H03B28/00 ,  H04W52/02 ,  H01L21/761 ,  H02M1/00 ,  H02M3/156 ,  H02M3/337 ,  H02M7/48

CPC classification number: H03K19/018571 ,  H01L21/761 ,  H01L2924/00 ,  H01L2924/13091 ,  H02M3/156 ,  H02M3/3376 ,  H02M2001/0048 ,  H02M2007/4815 ,  H03B28/00 ,  H03K19/0013 ,  H03K19/00361 ,  H04W52/028 ,  Y02D70/122

Abstract: A switching circuit that switches voltage at an output node includes a first switch element configured to enable supplying a first voltage from a first supply node to the output node, a second switch element configured to enable supplying a second voltage from a second supply node to the output node, and a controller. The controller switches the first and the second switch element between a first state and a second state depending on an input voltage. In the first state, the first switch element is in a conducting state and the second switch element is in a non-conducting state, and, in the second state the first switch element is in a non-conducting state and the second switch element is in a conducting state, the switching being performed through an intermediate state in which both the first and the second switch element are in the non-conducting state.

Abstract translation: 在输出节点处切换电压的开关电路包括第一开关元件，其被配置为能够将第一电压从第一电源节点提供给输出节点;第二开关元件，被配置为能够将第二电压从第二电源节点提供给 输出节点和控制器。 控制器根据输入电压在第一状态和第二状态之间切换第一和第二开关元件。 在第一状态下，第一开关元件处于导通状态，第二开关元件处于非导通状态，在第二状态下，第一开关元件处于非导通状态，第二开关元件为 在导通状态下，通过第一和第二开关元件都处于非导通状态的中间状态进行切换。

公开(公告)号：US09307460B2

公开(公告)日：2016-04-05

申请号：US14381744

申请日：2013-03-14

Applicant: ST-Ericsson SA

Inventor： Torgny Palenius ,  Jagadeesh Arunachalam ,  Tobias Junno

IPC: H04W36/00 ,  H04W36/30 ,  H04W36/18

CPC classification number: H04W36/0061 ,  H04W36/0083 ,  H04W36/18 ,  H04W36/30

Abstract: An arrangement (400) for a user equipment, UE, is disclosed. The arrangement (400) comprises an acquiring unit (401) configured to acquire neighboring cell information relating to a plurality of neighboring cells. An assignment unit (403) is provided to assign a priority indicator to each neighboring cell based on the neighboring cell information. Also, a measurement unit (404) is provided to perform measurements on the basis of the assigned priority indicators. The arrangement (400) is arranged such that measurements can be performed more frequently for a neighboring cell having a first priority indicator compared with another neighboring cell having a second priority indicator, which second priority indicator is comparatively lower than the first priority indicator. The disclosure also presents corresponding methods, computer program products and devices.

Abstract translation: 公开了一种用于用户设备UE的装置（400）。 该装置（400）包括获取单元（401），其被配置为获取与多个相邻小区相关的相邻小区信息。 提供分配单元（403），用于基于相邻小区信息向每个相邻小区分配优先级指示符。 此外，提供测量单元（404）以基于分配的优先级指示符来执行测量。 布置（400）被布置成使得与具有第二优先级指示符的第二优先级指示符相比，具有第一优先级指示符的相邻小区与具有第二优先级指示符的相邻小区相比更频繁地进行测量。 本公开还提出了相应的方法，计算机程序产品和设备。