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1. 发明授权

US07327717B2 Wireless LAN receiver synchronization 有权
标题翻译：无线局域网接收机同步
公开(公告)号：US07327717B2
公开(公告)日：2008-02-05
申请号：US10185354
申请日：2002-06-27
申请人： Jörg Borowski , Uwe Eckhardt , Michael Schmidt , Frank Poegel , Menno Mennenga
发明人： Jörg Borowski , Uwe Eckhardt , Michael Schmidt , Frank Poegel , Menno Mennenga
IPC分类号： H04Q7/24 , H04B1/00 , H04J3/06
CPC分类号： H04L27/0014 , H04B1/7073 , H04B1/70758 , H04B7/0811 , H04L2025/0349 , H04L2027/0065 , H04L2027/0095 , H04W88/08
摘要： A WLAN (Wireless Local Area Network) receiver is provided that provides at least two acquisition units and at least two tracking units. The acquisition units perform a synchronization acquisition process, and the tracking units perform a synchronization tracking process. The acquisition units are arranged for being operated sequentially while the tracking units are arranged for being operated simultaneously. In an embodiment, frequency and phase error correction may be performed separately, and those units that operate at higher sampling rates may be located before lower-rate units. The synchronization process may include data-aided as well as non data-aided algorithms.
摘要翻译：提供了WLAN（无线局域网）接收器，其提供至少两个采集单元和至少两个跟踪单元。采集单元执行同步捕获处理，并且跟踪单元执行同步跟踪处理。采集单元被布置成顺序地操作，而跟踪单元被布置成同时操作。在一个实施例中，可以分别执行频率和相位误差校正，并且以较低速率单元位于较高采样速率下工作的那些单元。同步过程可以包括数据辅助以及非数据辅助算法。

2. 发明授权

US07187724B2 Average tracking mechanism in data communications receivers 有权
标题翻译：数据通信接收机的平均跟踪机制
公开(公告)号：US07187724B2
公开(公告)日：2007-03-06
申请号：US10285925
申请日：2002-11-01
申请人： Menno Mennenga , Uwe Eckhardt , Michael Schmidt
发明人： Menno Mennenga , Uwe Eckhardt , Michael Schmidt
IPC分类号： H03K9/00
CPC分类号： H04L27/2647
摘要： An average tracking mechanism for a data communication receiver is provided. The average tracking mechanism of the receiver is connected to receive an input stream of data samples and is adapted to keep track of an average over a predefined number of most recently received data samples. The average tracking mechanism comprises a calculation unit that is adapted to calculate an approximate value of the average and a storage unit for storing calculated approximate values. The calculation unit is adapted to calculate the approximate value by retrieving a previously calculated approximate value from the storage unit and calculating a weighted sum of the retrieved approximate value and a current data sample. The average approximation technique may be used in a comb filter of a preamble detector in a WLAN receiver.
摘要翻译：提供了一种数据通信接收机的平均跟踪机制。接收机的平均跟踪机制被连接以接收数据采样的输入流，并且适于在预定数量的最近接收的数据样本上跟踪平均值。平均跟踪机构包括适于计算平均值的近似值的计算单元和用于存储计算出的近似值的存储单元。计算单元适于通过从存储单元检索先前计算的近似值并计算检索到的近似值和当前数据样本的加权和来计算近似值。平均近似技术可以用在WLAN接收机中的前同步码检测器的梳状滤波器中。

3. 发明授权

US07184507B2 Residual phase error correction 失效
标题翻译：残余相位误差校正
公开(公告)号：US07184507B2
公开(公告)日：2007-02-27
申请号：US10284646
申请日：2002-10-31
申请人： Menno Mennenga , Frank Poegel , Michael Schmidt
发明人： Menno Mennenga , Frank Poegel , Michael Schmidt
IPC分类号： H04L7/00
CPC分类号： H04L27/0014 , H04L2027/0046 , H04W84/12
摘要： A phase error correction technique in data communication receivers such as WLAN (Wireless Local Area Network) receivers is provided. A signal having a phase error is received, and a phase error correction mechanism having a loop structure is operated on the input signal to correct the phase error. The corrected signal still has a residual phase error. The residual phase error is then compensated taking into account a loop time delay of the loop structure. Further, a phase change rate may be taken into account, and a smoothing process may additionally be performed.
摘要翻译：提供了诸如WLAN（无线局域网）接收机之类的数据通信接收机中的相位误差校正技术。接收到具有相位误差的信号，并且在输入信号上对具有环路结构的相位误差校正机构进行操作以校正相位误差。校正后的信号仍然具有残留相位误差。然后考虑到环路结构的环路时间延迟来补偿剩余相位误差。此外，可以考虑相位变化率，并且可以另外执行平滑处理。

4. 发明申请

US20060034366A1 Low-IF multiple mode digital receiver front end and corresponding method 审中-公开
标题翻译：低中频多模数字接收机前端及相应方法
公开(公告)号：US20060034366A1
公开(公告)日：2006-02-16
申请号：US11181236
申请日：2005-07-14
申请人： Michael Schmidt , Eric Sachse , Menno Mennenga
发明人： Michael Schmidt , Eric Sachse , Menno Mennenga
IPC分类号： H03K9/04
CPC分类号： H04L27/0008
摘要： A data communications technique is provided that may be used in WLAN (Wireless Local Area Network) receivers. Data signals modulated in accordance with one of at least two different modulation schemes are received. The front end of the device has an analog and a digital part, and the digital front end includes a first and a second signal processing branch for processing received data signals modulated in accordance with different modulation schemes. The first and second processing branches have low-IF (Intermediate Frequency) topologies. There is further provided a corresponding integrated circuit chip and a method of processing received data signals.
摘要翻译：提供了可用于WLAN（无线局域网）接收机的数据通信技术。接收根据至少两种不同调制方案之一调制的数据信号。设备的前端具有模拟和数字部分，并且数字前端包括用于处理根据不同调制方案调制的接收数据信号的第一和第二信号处理分支。第一和第二处理分支具有低IF（中频）拓扑。还提供了相应的集成电路芯片和处理接收的数据信号的方法。

5. 发明授权

US07042962B2 LMS-based channel estimation 有权
公开(公告)号：US07042962B2
公开(公告)日：2006-05-09
申请号：US10259715
申请日：2002-09-27
申请人： Michael Schmidt , Menno Mennenga , Thomas Hanusch
发明人： Michael Schmidt , Menno Mennenga , Thomas Hanusch
IPC分类号： H04L27/06
CPC分类号： H04L25/025
摘要： A data communications device and method is provided that apply an LMS (Least Mean Square) channel estimation. A coefficient calculation unit generates a signal that represents at least one channel coefficient that is indicative of a property of the channel such as its finite impulse response. Further, an error calculation unit generates an error signal. Dependent on the error signal, the channel coefficients are updated by performing the LMS algorithm using a step size of two to a negative integer power. This allows for a simple, less complex implementation, and may be applied in a wireless local area network receiver for adjusting filter coefficients.

6. 发明授权

US07242711B2 Decision feedback equalizer having reduced gate count 有权
标题翻译：决策反馈均衡器具有减少的门数
公开(公告)号：US07242711B2
公开(公告)日：2007-07-10
申请号：US10464987
申请日：2003-06-19
申请人： Uwe Eckhardt , Michael Schmidt , Eric Sachse
发明人： Uwe Eckhardt , Michael Schmidt , Eric Sachse
IPC分类号： H03H7/40
CPC分类号： H04L25/03057 , H03H17/0294 , H04L2025/0349 , H04L2025/03617
摘要： An improved decision feedback equalization technique is provided that may be used in data communications receivers such as those in WLAN (Wireless Local Area Network) systems. The decision feedback equalizer comprises a feedforward filter that is connected to receive an input data signal and output a filter representation thereof. The feedforward filter has a filter characteristic that depends on filter coefficient data. The decision feedback equalizer further comprises a filter coefficient computation unit for generating the filter coefficient data and outputting the generated data to the feedforward filter. At least one data processing circuit is provided that receives a mode switch signal for switching its operational mode. The data processing circuit is arranged for performing a feedforward filter function in one operational mode and a filter coefficient computation function in another operational mode.
摘要翻译：提供了可用于诸如WLAN（无线局域网）系统中的数据通信接收机的改进的判决反馈均衡技术。判决反馈均衡器包括前馈滤波器，其被连接以接收输入数据信号并输出其滤波器表示。前馈滤波器具有取决于滤波器系数数据的滤波器特性。决策反馈均衡器还包括滤波器系数计算单元，用于产生滤波器系数数据并将生成的数据输出到前馈滤波器。提供至少一个数据处理电路，其接收用于切换其操作模式的模式切换信号。数据处理电路被配置为在一个操作模式下执行前馈滤波器功能，并且在另一操作模式中执行滤波器系数计算功能。

7. 发明授权

US07130343B2 Interference reduction in CCK modulated signals 失效
公开(公告)号：US07130343B2
公开(公告)日：2006-10-31
申请号：US10259711
申请日：2002-09-27
申请人： Michael Schmidt , Eric Sachse , Uwe Eckhardt
发明人： Michael Schmidt , Eric Sachse , Uwe Eckhardt
IPC分类号： H03H7/40 , H03D1/04
CPC分类号： H04L25/03025 , H04L23/02 , H04L25/0202 , H04L2025/0349 , H04L2025/0377 , H04W84/12
摘要： A wireless local area network receiver is provided that has an interference reduction unit for reducing interchip interference in a received signal that is modulated using a complementary code keying technique such as CCK-11. The interference reduction unit comprises a decision feedback equalizer that has a feedforward filter for reducing precursor interference and a feedback filter for reducing postcursor interference in the received signal. The receiver may perform channel estimation to optimize the filter coefficients during the preambles of the incoming sequence.

8. 发明授权

US10827907B2 Trocar system 有权
公开(公告)号：US10827907B2
公开(公告)日：2020-11-10
申请号：US13990289
申请日：2011-11-29
申请人： Reiner Kunz , Michael Schmidt
发明人： Reiner Kunz , Michael Schmidt
IPC分类号： A61B1/00 , A61B17/34 , A61B1/05 , A61B1/06 , A61B90/00
摘要： The invention relates to a trocar system for a minimally invasive work station, comprising an endoscopic instrument (2) having imaging means (3) and a device for transmitting the signals containing the image information to a display unit (6) and, as required, work tools, further comprising a trocar assembly (7 to 16) having a trocar sleeve, which is designed to receive a pin, including imaging means (8, 14), provided with a tip that is permeable to imaging media having different wavelengths, wherein the imaging means are provided to make the work field visible through the distal end of the pin and a device (16) is provided for transmitting the signals containing the image information to a display unit (6). The trocar assembly (7 to 16) and the minimally invasive instrument (3) are provided for separate use and for displaying the respective image information for the same display unit (6). The pin is provided with an on/off switch (13). The display device is equipped to display the image information transmitted by the pin when the pin is switched on and to suppress the display of the image information transmitted by the endoscopic instrument, and to display the information transmitted by the endoscopic instrument when the pin is switched off.

9. 发明授权

US09618271B2 Device for the exchange of heat and motor vehicle 有权
公开(公告)号：US09618271B2
公开(公告)日：2017-04-11
申请号：US12723286
申请日：2010-03-12
申请人： Johannes Diem , Eberhard Pantow , Ulrich Maucher , Peter Geskes , Martin Kaemmerer , Michael Schmidt , Klaus Irmler , Jens Holdenried , Steffen Brunner
发明人： Johannes Diem , Eberhard Pantow , Ulrich Maucher , Peter Geskes , Martin Kaemmerer , Michael Schmidt , Klaus Irmler , Jens Holdenried , Steffen Brunner
IPC分类号： F28D1/03 , F28F3/12 , F28D9/00 , F01K23/06 , F01K25/10 , F01N5/02 , F28F3/00 , F28D21/00
CPC分类号： F28D9/0043 , F01K23/065 , F01K25/10 , F01N5/02 , F01N2240/02 , F28D1/0316 , F28D1/0325 , F28D1/035 , F28D9/0056 , F28D21/0003 , F28D2021/0071 , F28F3/00 , F28F3/12 , Y02T10/16
摘要： A device for the exchange of heat between a first and a second medium with pairs of trays stacked one on top of the other in a stacking direction is provided, wherein a first flow chamber that can be flowed through by a first medium is provided between the two trays of at least one pair of trays or several pairs of trays and a second flow chamber that can be flowed through by a second medium is provided between two pairs of trays adjacent to one another, wherein the first flow chamber has first flow path with flow path sections that can be flowed through consecutively in opposite directions for the first medium, which are separated from one another by a division wall arranged between the at least two trays of the at least one pair of trays, and wherein the second flow chamber has a second flow path for the second medium.

10. 发明申请

US20160301471A1 Innovative Operation Room Light System Capable of Wireless Data Exchange Between Operating Room Devices 审中-公开
标题翻译：创新的操作室灯系统能够在手术室设备之间进行无线数据交换
公开(公告)号：US20160301471A1
公开(公告)日：2016-10-13
申请号：US15038674
申请日：2014-11-25
申请人： Reiner KUNZ , Michael SCHMIDT
发明人： Reiner Kunz , Michael Schmidt
IPC分类号： H04B10/116 , A61B90/30 , H04B10/58 , G08C23/04 , H04B10/114 , H04B10/50
CPC分类号： H04B10/116 , A61B90/30 , A61B2090/309 , G08C23/04 , H04B10/1143 , H04B10/503 , H04B10/58
摘要： The invention relates to a communication system and devices forming part of this system, wherein light is used for the transmission signal. The communication system includes an apparatus for forwarding operating room device signals to a device which apparatus is configured to receive an analog signal comprising the operating room device signal and to produce a digital signal based upon the analog signal, the apparatus further being configured to produce a signal based upon the digital signal, wherein the signal is for modulating the output of a light source. This invention includes a device for managing access and priority of traffic within this system according to a specific hierarchy of priority starting with safety and ending with administrative information.
摘要翻译：本发明涉及形成该系统的一部分的通信系统和装置，其中光用于传输信号。通信系统包括用于将手术室设备信号发送到设备的装置，该设备被配置为接收包括手术室设备信号的模拟信号，并且基于模拟信号产生数字信号，该设备还被配置为产生基于数字信号的信号，其中信号用于调制光源的输出。本发明包括一种用于根据从安全性开始并以管理信息结束的优先级的特定层次来管理该系统内的流量的访问和优先级的装置。

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