公开(公告)号：EP2360861A3

公开(公告)日：2012-12-19

申请号：EP11153278.4

申请日：2011-02-04

申请人： Zarlink Semiconductor Inc.

发明人： Rahbar, Kamran

IPC分类号： H04J3/06

CPC分类号： H04J3/0664

摘要： A method of recovering timing information in a packet network, involves detecting quiet periods in the packet network when network packet delay variation (PDV) is low. A frequency prediction unit is trained during the quiet periods to learn output clock variations of a timing recovery unit to permit the frequency prediction unit to predict frequency update values for a local oscillator during non quiet periods taking into account the historical output clock variations during quiet periods. The output of the frequency prediction unit is used as the active frequency update values during non quiet periods.

公开(公告)号：EP1998539B1

公开(公告)日：2011-07-06

申请号：EP08156983.2

申请日：2008-05-27

申请人： Zarlink Semiconductor Inc.

发明人： Rahbar, Kamran

IPC分类号： H04M9/08

CPC分类号： H04M9/082

公开(公告)号：EP2020629A3

公开(公告)日：2011-04-13

申请号：EP08160913.3

申请日：2008-07-22

申请人： Zarlink Semiconductor Inc.

发明人： De Rijk, Johannes, Hermanus, Aloysius ,  Van der Valk, Robertus Laurentius

IPC分类号： G06F1/025

CPC分类号： G06F1/025

摘要： A frequency synthesizer includes a first clock running at a frequency f CLK1 , a second clock running at a frequency f CLK2 , wherein frequency f CLK2 is higher than frequency f CLK1 , the frequencies having a fixed ratio Q FB = f CLK2 / f CLK1 ; and a counter driven by the first clock. A decoder for produces Q FB output values in parallel for each cycle of the first clock, and parallel-serial converter serially outputs these Q FB output values at the frequency of the second clock.

公开(公告)号：EP1350339B1

公开(公告)日：2009-07-29

申请号：EP02710709.3

申请日：2002-01-10

申请人： Zarlink Semiconductor Inc.

发明人： SEIBERT, Michael

IPC分类号： H04B3/23

CPC分类号： H04B3/234

摘要： A process is described which generates matrix coefficients using zero-lag auto and cross-correlations from signals commonly found in echo canceller. Double-talk and path changes are then detected using matrix operations such as determinants, eigendecompositions, or singular value decompositions (SVDs). In a preferred embodiment, the determinant of the correlation-based matrix is compared against predetermined threshold values.

公开(公告)号：EP2020629A2

公开(公告)日：2009-02-04

申请号：EP08160913.3

申请日：2008-07-22

申请人： Zarlink Semiconductor Inc.

发明人： De Rijk, Johannes, Hermanus, Aloysius ,  Van der Valk, Robertus Laurentius

IPC分类号： G06F1/025

CPC分类号： G06F1/025

摘要： A frequency synthesizer includes a first clock running at a frequency f CLK1 , a second clock running at a frequency f CLK2 , wherein frequency f CLK2 is higher than frequency f CLK1 , the frequencies having a fixed ratio Q FB = f CLK2 / f CLK1 ; and a counter driven by the first clock. A decoder for produces Q FB output values in parallel for each cycle of the first clock, and parallel-serial converter serially outputs these Q FB output values at the frequency of the second clock.

摘要翻译： 频率合成器包括以频率f CLK1运行的第一时钟，以频率f CLK2运行的第二时钟，其中频率f CLK2高于频率f CLK1，频率具有固定比率Q FB = f CLK2 / f CLK1; 和由第一个时钟驱动的计数器。 用于在第一时钟的每个周期并行产生Q FB输出值的解码器，并行串行转换器以第二个时钟的频率串行输出这些Q FB输出值。

公开(公告)号：EP1595347A1

公开(公告)日：2005-11-16

申请号：EP04711547.2

申请日：2004-02-17

申请人： Zarlink Semiconductor Inc.

发明人： VAN DER VALK, Robertus, Laurentius ,  REPKO, Willem, L.

IPC分类号： H04J3/06

CPC分类号： H04J3/0664 ,  H04J3/0641

摘要： Disclosed is a method of distributing a number of reference clocks across a packet network. The packet network has a master node and one or more slave nodes, the master node and each slave node having basis clocks. A sender sends time-stamped synchronization packets to said one or more slave nodes, and a receiver at the slave nodes receives the time-stamped synchronization packets and synchronizes the basis clocks in the slave nodes with the basis clock in the master node. Multiple reference clocks are encoded with respect to the basis clock in the master node to generate numerical information describing the reference clock(s) in relation to the basis clock in the master node. The basis clock in each of the slave node is synchronized to the basis clock in the master node using time-stamped synchronization packets. The one or more reference clocks are recovered at the slave nodes using said numerical information describing the reference clock(s) in relation to the basis clock in the master node.

公开(公告)号：EP1273677A2

公开(公告)日：2003-01-08

申请号：EP02253833.4

申请日：2002-05-30

申请人： Zarlink Semiconductor Inc.

发明人： Ouellet, Luc ,  Lachance, Jonathan ,  Grondin, Manuel ,  Blain, Stephane

IPC分类号： C23C16/54 ,  C23C16/40 ,  G02B1/10 ,  G02B6/10

CPC分类号： C23C16/54 ,  C23C16/401

摘要： To deposit optical quality films by PECVD (Plasma Enhanced Chemical Vapour Deposition), a six-dimensional space wherein five dimensions thereof correspond to five respective independent variables of which a set of four independent variables relate to the flow-rate of respective gases, a fifth independent variable relates to total pressure, and a sixth dimension relates to observed FTIR characteristics is first created. Then an optical film is deposited while maintaining three of the set of four independent variables substantially constant as well as the fifth independent variable, and varying a fourth of the set of four independent variables to obtain desired characteristics in the sixth dimension.

摘要翻译： 为了通过PECVD（等离子体增强化学气相沉积）PECVD（等离子体增强化学气相沉积）沉积光学质量膜，其六维空间对应于五个相应的独立变量，其中一组四个独立变量与各气体的流量相关，第五 自变量与总压有关，第六维与观测到的FTIR特征有关。 然后在保持四组独立变量组中的三组基本上恒定的第五个独立变量之间沉积光学薄膜，并改变四组独立变量中的四分之一以获得第六维度的期望特性。

公开(公告)号：EP2360861A2

公开(公告)日：2011-08-24

申请号：EP11153278.4

申请日：2011-02-04

申请人： Zarlink Semiconductor Inc.

发明人： Rahbar, Kamran

IPC分类号： H04J3/06

CPC分类号： H04J3/0664

摘要： A method of recovering timing information in a packet network, involves detecting quiet periods in the packet network when network packet delay variation (PDV) is low. A frequency prediction unit is trained during the quiet periods to learn output clock variations of a timing recovery unit to permit the frequency prediction unit to predict frequency update values for a local oscillator during non quiet periods taking into account the historical output clock variations during quiet periods. The output of the frequency prediction unit is used as the active frequency update values during non quiet periods.

摘要翻译： 回收分组网络的定时信息的方法，包括检测在所述分组网络分组延迟变化安静时段当网络（PDV）是低的。 频率预测单元在所述安静周期训练学习的定时恢复单元的输出时钟变化，以允许频率预测单元，预测频率更新值期间在安静期间考虑到历史输出时钟变化非静默周期的本机振荡器 ， 频率预测单元的输出被用作在非安静时段活性频率updateValues。

公开(公告)号：EP1978649A3

公开(公告)日：2008-12-31

申请号：EP08154057.7

申请日：2008-04-04

申请人： Zarlink Semiconductor Inc.

发明人： Rahbar, Kamran

IPC分类号： H04B3/23

CPC分类号： H04M9/082

摘要： Disclosed is a non-linear echo canceller and method for cancelling echo during full duplex communication in a hands free communication system. An input signal from a far-end talker and an input signal from the output from an echo canceller are received. K spectral subbands are created for each input signal. The spectral echo residual power at each subband is estimated and compared to a clean signal power to calculate a signal to echo ratio. Gains are calculated based on each calculated ratio and non-linear echo is canceleld based on the calculated gains.

公开(公告)号：EP1998539A2

公开(公告)日：2008-12-03

申请号：EP08156983.2

申请日：2008-05-27

申请人： Zarlink Semiconductor Inc.

发明人： Rahbar, Kamran

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： A method of detecting double talk condition in hands free communication devices is disclosed. In general, the method in accordance with the teachings of this invention detects double talk conditions based on inherent frequency response differences between the transducers used and acoustical effect on the spectrum of the returned echo signal. An input signal from a far-end talker and an input signal from the output from an echo canceller are received by the detector. K spectral subbands are created for each input signal. From this K subbands q subbands are selected based on inherent frequency differences between the far-end transducer and a near-end transducer. The spectral echo residual power is estimated at each subband. The estimated spectral echo power and the output signal from the echo canceller for a selected subband are compared to a predetermined threshold. Based on this comparison, it is determined whether double talk conditions exist based on the comparison.

摘要翻译： 公开了一种在免提通信装置中检测双向通话状态的方法。 通常，根据本发明的教导的方法基于所使用的换能器之间的固有频率响应差异和对所返回的回波信号的频谱的声学效应来检测双方谈话条件。 来自远端讲话者的输入信号和来自回波消除器的输出的输入信号由检测器接收。 为每个输入信号创建K个频谱子带。 从该K个子带中，基于远端换能器和近端换能器之间的固有频率差选择q个子带。 在每个子带估计光谱回波剩余功率。 将所选择的子带的估计的光谱回波功率和来自回波消除器的输出信号与预定阈值进行比较。 基于该比较，基于比较来确定是否存在双重通话条件。