公开(公告)号：US09467247B2

公开(公告)日：2016-10-11

申请号：US14405475

申请日：2013-06-25

Applicant: ST-Ericsson SA

Inventor： Gerald Whitworth

IPC: H04K3/00 ,  G01S19/21 ,  H04B1/16

CPC classification number: H04K3/42 ,  G01S19/21 ,  H04B1/16 ,  H04K3/228 ,  H04K3/45 ,  H04K3/822

Abstract: A signal is detected and an unwanted jamming signal is removed from the detected signal. Respective first, second and third correlations between a received signal and signals at first, second and third frequencies are determined over a plurality of taps. The second frequency is higher than the first frequency and lower than the third frequency, and is equally spaced from the first and third frequencies. The second frequency is adapted to a frequency of the received signal such that peaks in the first and third correlations after corresponding adaptation of the first and third frequencies have substantially equal magnitudes. A difference is determined between non-peak magnitudes of the first and third correlations; and at least one of the correlations is compensated for the effects of the jamming signal, based on said difference.

Abstract translation: 检测到信号，并从检测到的信号中去除不需要的干扰信号。 在多个抽头上确定接收信号和第一，第二和第三频率之间的信号之间的相应的第一，第二和第三相关。 第二频率高于第一频率且低于第三频率，并且与第一和第三频率相等。 第二频率适应于接收信号的频率，使得在第一和第三频率的对应适应之后的第一和第三相关中的峰值具有基本相等的幅度。 在第一和第三相关的非峰值幅度之间确定差异; 并且基于所述差异，对所述干扰信号的影响补偿所述相关性中的至少一个。

公开(公告)号：US09451164B2

公开(公告)日：2016-09-20

申请号：US14405478

申请日：2013-05-30

Applicant: ST-Ericsson SA

Inventor： Stephane Auberger ,  Antoine Chouly

IPC: H04N5/228 ,  H04N5/232 ,  G06T5/00

CPC classification number: H04N5/23267 ,  G06T5/003 ,  G06T2207/20201 ,  H04N5/23254

Abstract: Methods of processing a frame in a video sequence of digital images are provided. The methods include determining a global motion vector for the frame relative to a previous frame in the sequence, deriving a jitter function from the global motion vector, the jitter function including an estimate of undesired motion of the frame relative to the previous frame, and determining whether the frame is blurred above a first predetermined threshold. If the frame is blurred above the first predetermined threshold, stabilizing the frame using the jitter function and applying a deblur function to the frame.

Abstract translation: 提供了处理数字图像的视频序列中的帧的方法。 所述方法包括确定该帧相对于序列中的先前帧的全局运动矢量，从全局运动矢量导出抖动函数，抖动函数包括帧相对于先前帧的不期望运动的估计，以及确定 该帧在第一预定阈值之上是否模糊。 如果帧在第一预定阈值之上模糊，则使用抖动功能来稳定帧并对帧执行去保护功能。

公开(公告)号：US09390300B2

公开(公告)日：2016-07-12

申请号：US14436502

申请日：2013-10-18

Applicant: ST-Ericsson SA

Inventor： Minh Tri Do Khac ,  Rajkrishna Pillai Ravindran

IPC: H04B5/00 ,  G06K7/10

CPC classification number: G06K7/10019 ,  G06K7/10237 ,  G06K7/10297 ,  H04B5/0062

Abstract: An NFC-enabled device (12) comprising a host (22), an NFC interface (26) and an RF transceiver (24) configured to emit a first RF field (46) to power-up one or more in-range RF barcodes (16, 60), the NFC-enabled device (12) being configured to detect the presence of an RF barcode (16, 60) upon powering it up and being configured to read data (48, 62 ) from the one or more detected, in-range RF barcodes (16, 60), characterized by the NFC-enabled device (12) periodically (42) emitting the first RF field (46) and being configured to transmit only changes (64) in the read data (48, 62) from the or each RF barcode (16, 60) to the host (22). The invention therefore presents several advantages, namely: it can improve the user's experience by keeping the listen mode active, even in the presence of a nearby Kovio Tag; and it can save battery power by performing a periodic Kovio tag detection instead of a continuous one.

Abstract translation: 一种支持NFC的设备（12），包括主机（22），NFC接口（26）和RF收发器（24），其被配置为发射第一RF场（46）以为一个或多个范围内的RF条形码 （16,60），所述NFC功能设备（12）被配置为在为其加电并检测RF条形码（16,60）的电源并且被配置为从所述一个或多个检测到的数据（48,62）读取数据 定期射频条形码（16,60），其特征在于，启用NFC的设备（12）周期性地（42）发射第一RF字段（46），并且被配置为仅传输读取数据（48）中的改变（64） ，62）从每个RF条形码（16,60）到主机（22）。 因此，本发明具有几个优点，即：即使在附近的Kovio标签的存在下，也可以通过保持听音模式的活动来改善用户的体验; 并且可以通过执行周期性的Kovio标签检测而不是连续的检测来节省电池电量。

公开(公告)号：US09344302B2

公开(公告)日：2016-05-17

申请号：US14423757

申请日：2013-09-10

Applicant: ST-Ericsson SA

Inventor： Achraf Dhayni

IPC: H04L25/03 ,  H03D3/00 ,  H04L27/36 ,  H04L27/38

CPC classification number: H04L25/03159 ,  H03D3/009 ,  H04L27/364 ,  H04L27/3863 ,  H04L2025/03414

Abstract: A transceiver for orthogonal frequency division multiplex communication has a transmitter module (1) and a receiver module (2). The transmitter (1) has an l-path (3) and a Q-path (4) to receive signals on a number of subcarriers provided by a signal generator (9). The receiver module (2) has a receiver l-path (7) and a receiver Q-path (8) to deliver signals to a processor (15). IQ imbalance is calculated for each of the transmitter and receiver by the signal generator sending a sample signal (Xl(k), XQ(k)) over a one of the transmitter paths. The signal is then applied to one or each of the inputs to the receiver paths (7,8) to generate receiver output signals Yl(k), YQ(k), RQ(k). The processor (15) is responsive to the output signals to calculate the transmitter and receiver IQ imbalance for that subcarrier. A calibrator (19) and compensator (20) are responsive to the calculated IQ imbalance to correct or compensate each subcarrier of the transceiver band.

Abstract translation: 用于正交频分复用通信的收发机具有发射机模块（1）和接收机模块（2）。 发射机（1）具有1路径（3）和Q路径（4），以在由信号发生器（9）提供的多个子载波上接收信号。 接收器模块（2）具有接收器1路径（7）和用于将信号传送到处理器（15）的接收器Q路径（8）。 通过信号发生器通过发送器路径之一发送采样信号（X1（k），XQ（k）），为每个发射机和接收机计算IQ不平衡。 然后将信号施加到接收器路径（7,8）的一个或每个输入以产生接收机输出信号Y1（k），YQ（k），RQ（k）。 处理器（15）响应于输出信号来计算该子载波的发射机和接收机IQ不平衡。 校准器（19）和补偿器（20）响应于所计算的IQ不平衡来校正或补偿收发器频带的每个子载波。

公开(公告)号：US09288574B2

公开(公告)日：2016-03-15

申请号：US14374929

申请日：2013-02-11

Applicant: ST-Ericsson SA

Inventor： Sergio Pernici ,  Germano Nicollini

IPC: H03F99/00 ,  H04R3/00 ,  H03F3/185 ,  H03F3/45

CPC classification number: H04R3/00 ,  H03F3/1855 ,  H03F3/45183 ,  H03F3/45511 ,  H03F2200/03 ,  H03F2200/481 ,  H03F2203/45374 ,  H03F2203/45418 ,  H04R3/002

Abstract: The invention relates to a circuit (100) for use with a loudspeaker (104) having a first differential input terminal (t1) and a second differential input terminal (t2), the circuit (100) comprising: a differential power amplifier (103) having a first differential output terminal (t3) operatively connected to the first differential input terminal (t1) of the loudspeaker (104) and a second differential output terminal (t4) operatively connected to the second differential input terminal (t2) of the loudspeaker (104);—a first resistor (RS1) disposed between the first differential output terminal (t3) of the differential power amplifier (103) and the first differential input terminal (t1) of the loudspeaker (104); a second resistor (RS2) disposed between the second differential output terminal (t4) of the differential power amplifier (103) and the second differential input terminal (t2) of the loudspeaker (104). The circuit (100) further comprises: a first resistive module (RR1, RR2) arranged to generate on a respective output terminal (t5) a first control voltage (VIN), the first resistive module (RR1, RR2) having a first input terminal (t6) connected to the first differential output terminal (t3) of the power amplifier (103) and a second input terminal (t7) connected to the second differential input terminal (t2) of the loudspeaker (104), a second resistive module (RR3, RR4) arranged to generate on a respective output terminal (t8) a second control voltage (VIP), the second resistive module (RR3, RR4) having a first input terminal (t9) connected to the second differential output terminal (t4) of the power amplifier (103) and a second input terminal (t10) connected to the first differential input terminal (t1) of the loudspeaker (104). The loudspeaker circuit (100) being arranged to control the differential power amplifier (103) on the basis of the first control voltage (VIN) and the second control voltage (VIP).

公开(公告)号：US09252705B2

公开(公告)日：2016-02-02

申请号：US14362279

申请日：2012-12-06

Applicant: ST-Ericsson SA

Inventor： Emmanuel Chataigner ,  Sebastien Dedieu

IPC: H03B5/12 ,  H03B5/36 ,  H03B25/00

CPC classification number: H03B5/1228 ,  H03B5/1215 ,  H03B5/124 ,  H03B5/1262 ,  H03B5/368 ,  H03B25/00

Abstract: An oscillator (200, 300, 350) comprises a tank circuit (100), a first transistor (M1c) and a second transistor (M1r), and the second transistor (M1r) occupies an area of silicon that is smaller than an area of silicon occupied by the first transistor (M1c). A switching apparatus (Sw1 . . . Sw14) selects either one of a first oscillator topology and a second oscillator topology, where in the first oscillator topology, the tank circuit (100) is coupled to the first transistor (M1c) in a first feedback configuration to provide feedback around the first transistor (M1c), and in the second oscillator topology, the tank circuit (100) is coupled to the second transistor (M1r) in a second feedback configuration that is different to the first feedback configuration to provide feedback around the second transistor (M1r).

Abstract translation: 振荡器（200,3300,350）包括一个振荡电路（100），一个第一晶体管（M1c）和一个第二晶体管（M1r），第二晶体管（M1r）占据一个小于 由第一晶体管（M1c）占据的硅。 开关装置（Sw1 ... Sw14）选择第一振荡器拓扑结构和第二振荡器拓扑中的任何一个，其中在第一振荡器拓扑中，振荡电路（100）以第一反馈耦合到第一晶体管（M1c） 配置以围绕第一晶体管（M1c）提供反馈，并且在第二振荡器拓扑中，振荡电路（100）以与第一反馈配置不同的第二反馈配置耦合到第二晶体管（M1r），以提供反馈 围绕第二晶体管（M1r）。

公开(公告)号：US20150381964A1

公开(公告)日：2015-12-31

申请号：US14767608

申请日：2014-02-03

Applicant: ST-ERICSSON SA

Inventor： Antoine DROUOT

IPC: H04N13/02 ,  H04N5/247

CPC classification number: H04N13/246 ,  G06T7/85 ,  G06T2207/10012 ,  H04N5/247 ,  H04N13/296

Abstract: An apparatus for calibrating a stereoscopic camera with respect to at least one stereo-image of the stereoscopic camera includes a processing unit configured to support at least a first triangulation unit, a second triangulation unit, and a Bundle Adjustment unit. The processing unit is configured to determine whether a convergence criterion has been met, the convergence criterion being indicative of whether or not a camera calibration ground-truth has been found.

Abstract translation: 用于相对于立体照相机的至少一个立体图像校准立体照相机的设备包括：处理单元，被配置为支持至少第一三角测量单元，第二三角测量单元和捆绑调整单元。 处理单元被配置为确定是否已经满足收敛标准，收敛标准指示是否已经找到相机校准基础。

公开(公告)号：US09225566B2

公开(公告)日：2015-12-29

申请号：US14361399

申请日：2012-12-10

Applicant: ST-Ericsson SA

Inventor： Leela Srikar Muppirisetty ,  Aravindh Krishnamoorthy

IPC: H04L27/00

CPC classification number: H04L27/0014 ,  H04L2027/0028 ,  H04L2027/0042

Abstract: The present subject matter discloses a system and a method for estimating a frequency offset in communication devices. In one embodiment, the method of estimating a frequency offset in a communication device comprises generating a reconstructed signal based at least in part on a channel impulse response (CIR) corresponding to a received signal. Further, a normalization matrix is determined for the reconstructed signal. Thereafter, based at least in part on the normalization matrix and the reconstructed signal, the frequency offset is estimated such that the frequency offset corresponds to a maximum normalized-correlation between the reconstructed signal and the received signal.

Abstract translation: 本主题公开了一种用于估计通信设备中的频率偏移的系统和方法。 在一个实施例中，估计通信设备中的频率偏移的方法包括至少部分地基于对应于接收信号的信道脉冲响应（CIR）来生成重构信号。 此外，为重构信号确定归一化矩阵。 此后，至少部分地基于归一化矩阵和重构信号，估计频率偏移，使得频率偏移对应于重构信号和接收信号之间的最大归一化相关。

公开(公告)号：US20150372847A1

公开(公告)日：2015-12-24

申请号：US14767960

申请日：2013-11-25

Applicant: ST-Ericsson SA

Inventor： Achraf DHAYNI

IPC: H04L27/26

CPC classification number: H04L27/266 ,  H04L27/265

Abstract: A method and an apparatus determine a time of start of series of OFDM symbols forming an OFDM packet, wherein one or more symbols of the OFDM signal includes a plurality of copies of a short training sequence made of a plurality of time-domain samples. The method includes determining a coarse time index, determining a fine time index, and determining the time of start of each OFDM symbols based on the fine time index. The coarse time-domain sample of the coarse time index is within a coarse estimation error interval, and the time-domain samples of the coarse estimation error interval are converted into frequency domain samples. A metric value is determined for each frequency domain samples, and the fine time index is the time index corresponding to one of the coarse estimation error interval having its associated frequency domain sample having the lowest metric value.

Abstract translation: 一种方法和装置确定形成OFDM分组的一系列OFDM符号的起始时间，其中OFDM信号的一个或多个符号包括由多个时域采样构成的短训练序列的多个副本。 该方法包括：确定粗略时间索引，确定精细时间索引，以及基于精细时间索引确定每个OFDM符号的开始时间。 粗略时间索引的粗时域样本在粗估计误差区间内，粗估计误差区间的时域样本被转换为频域采样。 对于每个频域样本确定度量值，并且精细时间索引是对应于具有具有最低度量值的其相关联的频域采样的粗估计误差间隔之一的时间索引。

公开(公告)号：US20150372680A1

公开(公告)日：2015-12-24

申请号：US14655353

申请日：2013-12-05

Applicant: ST-ERICSSON SA

Inventor： Pierangelo CONFALONIERI ,  Federico GUANZIROLI

IPC: H03K19/0185 ,  H03K19/00

CPC classification number: H03K19/018521 ,  H03K19/0013 ,  H03K19/01714

Abstract: A voltage level shifting device for driving a capacitive load has an input terminal for receiving a first input signal switchable between a first logic state corresponding to a first reference voltage and a second logic state corresponding to a second reference voltage, and an output terminal for supplying an output signal switchable between a first logic state corresponding to a third reference voltage and a second logic state corresponding to a fourth reference voltage. The device also has a first electronic circuit that is activated following a commutation of the first input signal from the first reference voltage to the second reference voltage for fixing the output terminal to the fourth reference voltage. The device further has a second electronic circuit that is activated following a commutation of the first input signal from the second reference voltage to the first reference voltage.

Abstract translation: 用于驱动电容性负载的电压电平移动装置具有用于接收可在与第一参考电压相对应的第一逻辑状态和对应于第二参考电压的第二逻辑状态之间切换的第一输入信号的输入端和用于提供 输出信号可在对应于第三参考电压的第一逻辑状态与对应于第四参考电压的第二逻辑状态之间切换。 该装置还具有第一电子电路，其在从第一参考电压到第二参考电压的第一输入信号的换向之后被激活，用于将输出端固定到第四参考电压。 该装置还具有第二电子电路，其在从第二参考电压到第一参考电压的第一输入信号的换向之后被激活。