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1. 发明授权

US07429813B2 Piezoelectric actuator 失效
标题翻译：压电执行器
公开(公告)号：US07429813B2
公开(公告)日：2008-09-30
申请号：US10586033
申请日：2004-11-18
申请人： Gerhard Walter , Armin Mann
发明人： Gerhard Walter , Armin Mann
IPC分类号： H01L41/083
CPC分类号： H01L41/083 , H01L41/053
摘要： Piezoelectric actuators having ceramic layers and electrode layers, and being provided with an outer cover layer on each end face of the piezoelectric actuator. The ceramic layers and the outer cover layers each have a predetermined dielectric constant. Rapid switching of the actuator results in considerable electromagnetic interference, which must be reduced through complex measures involving the control unit or electric lines. The device reduces electromagnetic interference by decreasing the interfering capacitance between the actuator and the actuator housing connected to ground electrically. The outer cover layers have a lower relative dielectric constant than the ceramic layers between the outer cover layers.
摘要翻译：具有陶瓷层和电极层的压电致动器，并且在压电致动器的每个端面上设置有外覆盖层。陶瓷层和外覆盖层各自具有预定的介电常数。执行器的快速切换导致相当大的电磁干扰，必须通过涉及控制单元或电气线路的复杂措施来减少。该装置通过减小致动器和连接到地面的致动器壳体之间的干扰电容来减小电磁干扰。外覆盖层具有比外覆盖层之间的陶瓷层更低的相对介电常数。

2. 发明申请

US20070152542A1 Piezoelectric actuator 失效
标题翻译：压电执行器
公开(公告)号：US20070152542A1
公开(公告)日：2007-07-05
申请号：US10586033
申请日：2004-11-18
申请人： Gerhard Walter , Armin Mann
发明人： Gerhard Walter , Armin Mann
IPC分类号： H01L41/083
CPC分类号： H01L41/083 , H01L41/053
摘要： Piezoelectric actuators having ceramic layers and electrode layers, and being provided with an outer cover layer on each end face of the piezoelectric actuator. The ceramic layers and the outer cover layers each have a predetermined dielectric constant. Rapid switching of the actuator results in considerable electromagnetic interference, which must be reduced through complex measures involving the control unit or electric lines. The device reduces electromagnetic interference by decreasing the interfering capacitance between the actuator and the actuator housing connected to ground electrically. The outer cover layers have a lower relative dielectric constant than the ceramic layers between the outer cover layers.
摘要翻译：具有陶瓷层和电极层的压电致动器，并且在压电致动器的每个端面上设置有外覆盖层。陶瓷层和外覆盖层各自具有预定的介电常数。执行器的快速切换导致相当大的电磁干扰，必须通过涉及控制单元或电气线路的复杂措施来减少。该装置通过减小致动器和连接到地面的致动器壳体之间的干扰电容来减小电磁干扰。外覆盖层具有比外覆盖层之间的陶瓷层更低的相对介电常数。

3. 发明授权

US06498850B1 Multichannel echo canceller with a compander 失效
标题翻译：多通道回波消除器与压缩扩展器
公开(公告)号：US06498850B1
公开(公告)日：2002-12-24
申请号：US09282212
申请日：1999-03-31
申请人： Michael Walker , Hans Jürgen Matt , Armin Mann , Fritz Weinschenk , Holger Söhnle
发明人： Michael Walker , Hans Jürgen Matt , Armin Mann , Fritz Weinschenk , Holger Söhnle
IPC分类号： H04M908
CPC分类号： H04B3/23
摘要： A compander circuit (20) for echo cancellation in telecommunications apparatus with an estimator module (21) for estimating an echo coupling and a delay of a line echo and a characteristic module (23) with an associated multiplier (24) for controlling the short-time output level of zout(k) as a function of the short-time input level of zin(k) is characterized in that at all inputs and outputs of the compander circuit (20), a plurality of N communications channels are applied and outputted, respectively, at an N-fold clock rate as compared with a single communications channel; that all memory units in the compander circuit (20) are designed as multiplexer-buffer-demultiplexer (MBD) units (30); and that a modulo-N counter (26) is provided which controls all MBD units (30) so that in each of the MBD units (30), always the same memory cell (351, 352, 35N) assigned to a particular communications channel is addressed.
摘要翻译：一种用于在具有估计模块（21）的电信设备中用于回波消除的压缩扩展电路（20），用于估计回波耦合和线路回波延迟以及具有相关联的乘法器（24）的特征模块（23）作为zin（k）的短时输入电平的函数的zout（k）的时间输出电平的特征在于，在压缩扩展电路（20）的所有输入和输出处，施加并输出多个N个通信信道，与单个通信信道相比分别为N倍时钟速率; 所述压缩扩展电路（20）中的所有存储器单元被设计为多路复用器 - 缓冲器解多路复用器（MBD）单元（30）; 并且提供了模N计数器（26），其控制所有MBD单元（30），使得在每个MBD单元（30）中，总是相同的存储器单元（351,352,35N）分配给特定通信信道被解决。

4. 发明授权

US06493448B1 Process for echo suppression with adaptive fir filters 失效
标题翻译：具有自适应冷杉滤波器的回波抑制过程
公开(公告)号：US06493448B1
公开(公告)日：2002-12-10
申请号：US09231794
申请日：1999-01-15
申请人： Armin Mann , Hans Jürgen Matt , Michael Walker
发明人： Armin Mann , Hans Jürgen Matt , Michael Walker
IPC分类号： H04M908
CPC分类号： H04B3/23
摘要： A process for suppressing total echoes comprising a plurality of partial echoes in telecommunications (TK) equipment such as terminals, transmission systems, or switching equipment by means of adaptive FIR (=Finite Impulse Response) filters that simulate the total echo and subtract it from the echo-affected useful signal transmitted to the respective TK equipment, whereby n partial FIR filters are provided, which respectively simulate a partial echo, is characterized in that m parallel, mutually independent TK channels are provided with an echo suppression function and that for this purpose a variable sub-quantity of the partial FIR filters is assigned to a TK channel to be operated, respectively, as required depending on the number of partial echoes and the size of the occurring delay times between signal and echo. This permits effective echo suppression without significant memory space and computational effort even for a large number of m parallel, mutually independent TK channels, such as must be processed in switching equipment or gateways.
摘要翻译：一种用于通过自适应FIR（=有限脉冲响应）滤波器抑制电信（TK）设备中诸如终端，传输系统或交换设备的多个部分回波的总回波的过程，该自适应FIR（=有限脉冲响应）滤波器模拟总回波并将其从回波影响的有用信号被发送到相应的TK设备，由此提供分别模拟部分回波的n个部分FIR滤波器，其特征在于m个并行的，相互独立的TK信道被提供回波抑制功能，为此目的根据需要，根据部分回波的数量和信号和回波之间出现的延迟时间的大小，分配将部分FIR滤波器的可变子量分配给要被操作的TK信道。这允许有效的回波抑制，即使对于大量的并行，相互独立的TK信道也不会有显着的存储空间和计算量，例如必须在交换设备或网关中处理。

5. 发明授权

US06483915B1 Equipment and processes for echo suppression with adaptive fir filters 失效
标题翻译：用自适应冷杉滤波器进行回波抑制的设备和过程
公开(公告)号：US06483915B1
公开(公告)日：2002-11-19
申请号：US09231793
申请日：1999-01-15
申请人： Armin Mann , Hans Jürgen Matt , Michael Walker
发明人： Armin Mann , Hans Jürgen Matt , Michael Walker
IPC分类号： H04M908
CPC分类号： H04B3/23
摘要： An equipment (1) for the suppression of whole echoes composed of several partial echoes in telecommunications (TC) equipment, such as end devices, transmission systems or exchange equipment, with the help of adaptive FIR (=Finite Impulse Response) filters, which reproduce the whole echo and extract it from the echo-laden useful signal and which has been transferred to the respective TC equipment, in which the homogeneous FIR filters or partial filters (10), each of which are able to reproduce a whole echo or partial echo, are implemented on a single ASIC (=Application Specific Integrated Circuit) (9) for the m parallel and independent TC channels n to be served; and in which the whole echoes or partial echoes to be reproduced can be calculated in real time in the ASIC (9) and in which a digital signal processor (4) is designed to control the ASIC (9) and set the filter settings, especially after the coefficient required to reproduce the echo is calculated on the ASIC (9). This calculation is carried out in the digital signal processor (4). This makes it possible to effectively suppress echoes in a large number of m parallel and independent TC channels, as they must be processed in exchanges and network hybrids, without requiring a large amount of memory space and computational effort.
摘要翻译：在自适应FIR（=有限脉冲响应）滤波器的帮助下，用于抑制电信（TC）设备中的几个部分回波（例如终端设备，传输系统或交换设备）的整个回波的设备（1）整个回波并将其从有回波的有用信号中提取出来，并将其传送到相应的TC设备，其中均匀的FIR滤波器或部分滤波器（10）能够再现整个回波或部分回波在单个ASIC（=专用集成电路）（9）上实现，用于要并行和独立的TC信道n被服务; 并且其中可以在ASIC（9）中实时地计算整个回波或部分回波以被再现，并且其中数字信号处理器（4）被设计为控制ASIC（9）并设置滤波器设置，特别是在ASIC（9）上计算再现回波所需的系数之后。该计算在数字信号处理器（4）中进行。这使得可以有效地抑制大量m个并行和独立的TC信道中的回波，因为它们必须在交换和网络混合中被处理，而不需要大量的存储空间和计算量。

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