公开(公告)号：US20040240597A1

公开(公告)日：2004-12-02

申请号：US10814824

申请日：2004-03-31

Applicant: STMicroelectronics N.V.

Inventor： Chiara Cattaneo ,  Nils Rinaldi ,  Matteo Frigerio ,  Regis Cattenoz

IPC: H04L027/06

CPC classification number: H04B1/7183 ,  H04B2001/6908

Abstract: An incident signal contains a preamble including a training sequence having a series of pulses whose polarity and time shifts are defined by respective polarity code and time-hopping code. A method includes a digital cross-correlation of the received signal with the training sequence. The cross-correlation algebraically sums in accordance with the polarity code windows of the received signal. The starting points of the windows are determined by the time-hopping code. The cross-correlation further includes detecting the end point of the preamble from the result of the digital cross-correlation. When the size of the receiving buffer, i.e., the size of the window is smaller than the number N of samples of each replica of the training sequence, it is particularly advantageous that the digital cross-correlation be performed iteratively in a block-by-block fashion. The computation of each block is split into M slices which are computed by algebraically summing windows N/M samples long.

Abstract translation: 入射信号包含前导码，其包括具有一系列脉冲的训练序列，其极性和时间偏移由相应的极性码和跳时码定义。 一种方法包括接收信号与训练序列的数字互相关。 互相关代数根据接收信号的极性码窗口相加。 窗口的起点由跳时码决定。 互相关还包括从数字互相关的结果检测前同步码的终点。 当接收缓冲器的大小（即，窗口的大小）小于训练序列的每个副本的样本数N时，特别有利的是，数字互相关是逐个逐行执行的， 块时尚。 每个块的计算被分成M个片段，它们通过对N / M个样本长的代数求和来计算。

公开(公告)号：US20040171397A1

公开(公告)日：2004-09-02

申请号：US10754465

申请日：2004-01-09

Applicant: STMicroelectronics N.V. ,  STMicroelectronics S.r.I.

Inventor： Patrick Cerisier ,  Giovanni Cerusa

IPC: H04B015/00

CPC classification number: H03F3/211 ,  H03F3/2175 ,  H03F2200/331 ,  H03F2200/372

Abstract: A power amplification device includes an input for receiving a signal having a useful or desired frequency band, and power amplification circuitry of the delta-sigma type connected to the input. The power amplification circuitry exhibits an order greater than or equal to one in the useful frequency band, and an order greater than or equal to one outside the useful frequency band.

Abstract translation: 功率放大装置包括用于接收具有有用或期望频带的信号的输入端和连接到输入端的Δ-Σ型功率放大电路。 功率放大电路在有用频带中呈现大于或等于1的阶数，以及在有用频带外的大于或等于1的阶数。

公开(公告)号：US20040162045A1

公开(公告)日：2004-08-19

申请号：US10754464

申请日：2004-01-09

Applicant: STMicroelectronics N.V. ,  STMicroelectronics S.r.l.

Inventor： Patrick Cerisier ,  Andrea Panigada

IPC: H04B001/16

CPC classification number: H03M3/446 ,  H03M3/43 ,  H03M3/45 ,  H03M3/454

Abstract: A power amplification device includes an input for receiving a signal having a desired frequency band. The signal also has a transfer function associated therewith. The power amplification device further includes power amplification circuitry having an order greater than or equal to one, and signal amplifiers connected between the input and the power amplification circuitry. Each signal amplifier has a predetermined gain so that zeros of the transfer function are outside the desired frequency band.

Abstract translation: 功率放大装置包括用于接收具有期望频带的信号的输入端。 该信号还具有与其相关联的传递函数。 功率放大装置还包括具有大于或等于1的量级的功率放大电路，以及连接在输入和功率放大电路之间的信号放大器。 每个信号放大器具有预定的增益，使得传递函数的零在所期望的频带之外。

公开(公告)号：US20040073421A1

公开(公告)日：2004-04-15

申请号：US10622019

申请日：2003-07-17

Applicant: STMicroelectronics N.V.

Inventor： Michael Ansorge ,  Giuseppina Biundo Lotito ,  Benito Carnero

IPC: G10L019/10

CPC classification number: G10L19/12 ,  G10L19/08

Abstract: A method for encoding wideband speech includes sampling the speech to obtain successive voice frames each comprising a predetermined number of samples, and determining for each voice frame parameters of a linear prediction model. The parameters include a long-term excitation word extracted from an adaptive coded directory, and a short-term excitation word extracted from a fixed coded directory. The extraction of the long-term excitation word is performed using a first weighting filter. The extraction of the short-term excitation word is performed using a second weighting filter cascaded with a third weighting filter. The first and third weighting filters are equal.

Abstract translation: 一种用于编码宽带语音的方法包括对语音进行采样，以获得每个包括预定数量样本的连续语音帧，并且确定线性预测模型的每个语音帧参数。 这些参数包括从自适应编码目录中提取的长期激励词和从固定编码目录中提取的短期激励词。 使用第一加权滤波器来执行长期激励字的提取。 使用与第三加权滤波器级联的第二加权滤波器来执行短期激励字的提取。 第一和第三加权滤波器相等。

公开(公告)号：US20040064312A1

公开(公告)日：2004-04-01

申请号：US10622020

申请日：2003-07-17

Applicant: STMicroelectronics N.V.

Inventor： Michael Ansorge ,  Giuseppina Biundo Lotito ,  Benito Carnero

IPC: G10L019/04

CPC classification number: G10L19/12

Abstract: A method for encoding speech includes sampling speech to obtain successive voice frames each having a predetermined number of samples, and determining parameters of a linear prediction model for each voice frame. The parameters include a long-term excitation word extracted from an adaptive coded directory using a first linear prediction filter and an associated long-term gain. The parameters further include a short-term excitation word extracted from a fixed coded directory and an associated short-term gain. The adaptive coded directory is updated based upon the extracted long-term excitation word and the extracted short-term excitation word. The first linear prediction filter is updated using the short-term excitation word filtered by a second filter. The second filter has an order greater than or equal to 1 and coefficients thereof depend on the long-term gain for reducing a short-term excitation contribution when a long-term excitation gain is greater than a threshold.

Abstract translation: 一种用于编码语音的方法包括采样语音以获得每个具有预定数量样本的连续语音帧，以及确定每个语音帧的线性预测模型的参数。 参数包括使用第一线性预测滤波器和相关联的长期增益从自适应编码目录提取的长期激励词。 这些参数还包括从固定编码目录中提取的短期激励词和相关联的短期增益。 基于提取的长期激励词和提取的短期激励词来更新自适应编码目录。 使用由第二滤波器滤波的短期激励字来更新第一线性预测滤波器。 第二滤波器具有大于或等于1的阶数，并且当长期激励增益大于阈值时，其系数取决于用于减少短期激励贡献的长期增益。

公开(公告)号：US20040047414A1

公开(公告)日：2004-03-11

申请号：US10465532

申请日：2003-06-19

Applicant: STMicroelectronics SA ,  STMicroelectronics N.V.

Inventor： Didier Helal ,  Fritz Lebowsky

IPC: H03K007/04 ,  H03K007/06

CPC classification number: H04B1/7174 ,  H03K7/04 ,  H04L25/4902

Abstract: A controllable pulse generator generates the pulses of the signal which are respectively contained in successive time windows, and a control device formulates a control signal for the generator including, for each pulse, an indication of its position in the corresponding window. The control device includes a processor to deliver for each time window, at a delivery frequency Fe greater than the pulse repetition frequency, successive groups of N bits together defining a digital cue of position of a pulse inside the window. Also, a converter converts this digital position cue into the control signal temporally spread over the length (T) of the window and including the indication of position at an instant corresponding to the digital position cue. This makes it possible to position the pulse inside its window with a temporal precision equal to 1/N.Fe.

Abstract translation: 可控脉冲发生器产生分别包含在连续时间窗口中的信号脉冲，并且控制装置为发生器制定一个控制信号，包括对于每个脉冲，其对应的窗口中其位置的指示。 控制装置包括处理器，用于以大于脉冲重复频率的传送频率Fe传送每个时间窗口，连续的N位组一起定义窗口内的脉冲位置的数字提示。 此外，转换器将该数字位置提示转换成在窗口的长度（T）上暂时分布的控制信号，并且包括在对应于数字位置提示的时刻的位置指示。 这使得可以将脉冲定位在其窗口内，时间精度等于1 / N.Fe。

公开(公告)号：US20040032756A1

公开(公告)日：2004-02-19

申请号：US10387119

申请日：2003-03-12

Applicant: STMicroelectronics N.V.

Inventor： Luc Jozef Louis Van Den Bossche

IPC: H02M007/00

CPC classification number: H02M7/219 ,  H02M7/217

Abstract: AC/DC converters comprise rectifiers for rectifying AC signals into DC signals. By providing these AC/DC converters with voltage dividing capacitors located between converter-input, a resistor, added to voltage dividing capacitor for filtering peak signals, and a rectifier, the rectifier can be better integrated, as it no longer receives the entire input voltage present at the converter-input of the AC/DC converter, without a conventional transformer comprising an iron core and windings being required. Such an AC/DC-converter is small sized, of light-weight and low costly made. Preferably, the converter-input is symmetric, the rectifier comprises two diodes and two transistors and a zero-cross detector for switching the transistors, the AC/DC converter comprises a down-converter located between the rectifier and converter-output for further down-converting purposes and comprising an inductor and a regulator for regulating inductor/capacitor-energies, with buffer capacitors being present in parallel to the down-converter for stabilising purposes, to get a transformerless wall plug adapter.

Abstract translation: AC / DC转换器包括用于将AC信号整流为DC信号的整流器。 通过为这些AC / DC转换器提供位于转换器输入端之间的分压电容器，添加到用于滤波峰值信号的分压电容器的电阻器和整流器，整流器可以更好地集成，因为它不再接收整个输入电压 存在于AC / DC转换器的转换器输入端，而不需要包括铁芯的常规变压器和绕组。 这种AC / DC转换器体积小巧，重量轻，成本低廉。 优选地，转换器输入是对称的，整流器包括两个二极管和两个晶体管和用于切换晶体管的零交叉检测器，AC / DC转换器包括位于整流器和转换器输出之间的下变频器， 转换目的，并且包括用于调节电感器/电容器能量的电感器和调节器，其中缓冲电容器与下变频器​​并联存在用于稳定目的，以获得无变压器壁插头适配器。

公开(公告)号：US20030151395A1

公开(公告)日：2003-08-14

申请号：US10325476

申请日：2002-12-18

Applicant: STMICROELECTRONICS N.V.

Inventor： Koen Emiel Jozef Appeltans ,  Christian Bruno Gislain Binard

IPC: G05F001/40

CPC classification number: H02M3/156

Abstract: The invention relates to a DC/DC converter or power supply with a switched-mode regulator (2), said regulator (2) being provided or associated to a feedback comparator (1) of a feedback voltage (Vact) for improving the stability of the output signal. It is further provided or associated to a means (3, D) for adding an offset voltage (Voff) to the feedback voltage (Vact) during at least one phase (null1) of the switched-mode regulator (2) or at least a portion thereof.

Abstract translation: 本发明涉及具有开关模式调节器（2）的DC / DC转换器或电源，所述调节器（2）被提供或与反馈电压（Vact）的反馈比较器（1）相关联，用于提高稳定性 输出信号。 进一步提供或关联于用于在开关模式调节器（2）的至少一个相位（phi1）期间向反馈电压（Vact）增加偏移电压（Voff）的装置（3，D）或至少一个 部分。

公开(公告)号：US20030058963A1

公开(公告)日：2003-03-27

申请号：US10255741

申请日：2002-09-26

Applicant: STMicroelectronics N.V.

Inventor： Chiara Cattaneo ,  Didier Helal ,  Thierry Arnaud ,  Fritz Lebowsky ,  Regis Cattenoz

IPC: H03K009/00

CPC classification number: H04B1/7183 ,  H04B1/71637

Abstract: An incident pulse signal of the ultra wideband type conveys digital information that is coded using pulses having a known theoretical shape. A decoding device includes an input for receiving the incident signal, and for delivering a base signal. A comparator receives the base signal and delivers an intermediate signal representative of the sign of the base signal with respect to a reference. A sampling circuit samples the intermediate signal for delivering a digital signal. A digital processing circuit correlates the digital signal with a reference correlation signal corresponding to a theoretical base signal arising from the reception of a theoretical pulse having the known theoretical shape.

Abstract translation: 超宽带类型的入射脉冲信号传送使用具有已知理论形状的脉冲编码的数字信息。 解码装置包括用于接收入射信号和用于传送基本信号的输入。 比较器接收基本信号并传送表示基准信号相对于参考的符号的中间信号。 采样电路对传送数字信号的中间信号进行采样。 数字处理电路将数字信号与对应于从具有已知理论形状的理论脉冲的接收产生的理论基础信号相对应的参考相关信号。

公开(公告)号：US20040022211A1

公开(公告)日：2004-02-05

申请号：US10606189

申请日：2003-06-25

Applicant: STMicroelectronics N.V.

Inventor： Patrick Conti

IPC: H04B007/00

CPC classification number: H04B1/006 ,  H04B1/005 ,  H04B1/406 ,  H04B1/48

Abstract: A radio-frequency switching device includes first and second radio-frequency channels connected to an input/output terminal. A controllable switching device selects one of the radio-frequency channels in response to a switching control signal. The switching device includes a respective control module connected to each radio-frequency channel. Each control module includes a PIN diode whose cathode is connected to the input/output terminal, and a control transistor whose base is connected to a control input for receiving the switching control signal. A conducting terminal of the control transistor is connected to the anode of the PIN diode.

Abstract translation: 射频切换装置包括连接到输入/输出终端的第一和第二射频信道。 可控切换装置响应于切换控制信号选择射频信道之一。 交换设备包括连接到每个射频信道的相应控制模块。 每个控制模块包括PIN二极管，其阴极连接到输入/输出端子，以及控制晶体管，其基极连接到用于接收开关控制信号的控制输入端。 控制晶体管的导电端子连接到PIN二极管的阳极。