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21. 发明授权

US06640093B1 Broadcast receiver 失效
标题翻译：广播接收机
公开(公告)号：US06640093B1
公开(公告)日：2003-10-28
申请号：US09605966
申请日：2000-06-28
申请人： Jens Wildhagen
发明人： Jens Wildhagen
IPC分类号： H04B100
CPC分类号： H04L27/0008 , H04H40/18
摘要： A receiver for broadcast signals, e.g. DAB, FM, DVB, and digital or analog short-wave RF broadcast signals according to the present invention includes a polyfunctional circuit (5) that can be switched into three modes and performs the digital frequency demodulation which is needed for the reception of a frequency modulated signal in a first mode A, a digital frequency adjustment of the receiver in case of the reception of a digital or analog modulated broadcast signal like DAB, DVB, DRM or AM in a second mode B and the digital frequency adjustment and the digital gain control of the receiver which is needed in case of the reception of a digitally modulated broadcast signal like DAB, DVB, DRM in a third mode C. Depending on the needed functionality not all of these modes need to be realized. Nevertheless, the same hardware will be used for different purposes although the circuit is realized with an optimized amount of hardware to realize an efficient receiver.
摘要翻译：用于广播信号的接收机，例如 DAB，FM，DVB以及根据本发明的数字或模拟短波RF广播信号包括可以被切换成三种模式的多功能电路（5），并且执行频率接收所需的数字频率解调在第一模式A中的调制信号，在第二模式B中接收诸如DAB，DVB，DRM或AM的数字或模拟调制广播信号的情况下的接收机的数字频率调整，以及数字频率调整和数字增益在第三模式C中接收诸如DAB，DVB，DRM之类的数字调制广播信号的情况下所需的接收机的控制。根据所需功能，不需要全部实现这些模式。然而，相同的硬件将用于不同的目的，尽管电路是用优化的硬件来实现的，以实现高效的接收机。

22. 发明授权

US08215445B2 Electroacoustic transducer 有权
标题翻译：电声换能器
公开(公告)号：US08215445B2
公开(公告)日：2012-07-10
申请号：US12518078
申请日：2007-12-10
申请人： Jens Wildhagen , Jan Peter Kuhtz , Axel Grell
发明人： Jens Wildhagen , Jan Peter Kuhtz , Axel Grell
IPC分类号： G10K13/00 , H04R7/02 , H04R7/14 , H04R7/00 , H04R7/12
CPC分类号： H04R7/122 , H04R7/20 , H04R31/003
摘要： Provided is an electroacoustic transducer having a diaphragm (10). The diaphragm (10) has a first and a second region (20, 30), wherein the hardness, stiffness or compliance of the first region (20) differs from the second region (30).
摘要翻译：提供一种具有隔膜（10）的电声换能器。隔膜（10）具有第一和第二区域（20,30），其中第一区域（20）的硬度，刚度或顺从性与第二区域（30）不同。

23. 发明授权

US07505430B2 Alternative frequency strategy for DRM 失效
标题翻译： DRM的替代频率策略
公开(公告)号：US07505430B2
公开(公告)日：2009-03-17
申请号：US10914524
申请日：2004-08-09
申请人： Carsten Merkle , Jens Wildhagen , Markus Zumkeller
发明人： Carsten Merkle , Jens Wildhagen , Markus Zumkeller
IPC分类号： H04Q7/00
CPC分类号： H04H20/22 , H04H20/26 , H04H20/95 , H04H40/18 , H04H60/27
摘要： A radio transmission signal consisting of signal frames that comprise a dynamic data part and a quasi-static data part according to the present invention is characterized in that the dynamic data part of a respective frame contains an indicator showing in which following frame the quasi-static data part of this respective frame will be repeated. Therewith, an alternative frequency of e.g. a digital shortwave signal like a DRM signal can easily and satisfactorily be checked before a fast seamless switching to this alternative frequency can be performed. The inventive method to perform a seamless switching of a receiver from a first currently tuned frequency to a second alternative frequency is characterized by the step of receiving at least one set of samples from a respective signal transmitted on at least one second frequency during a time period during which said indicator assures that it is secure that only data that has been transmitted at least once is transmitted as signal on said first frequency to gather some information about said alternative frequency.
摘要翻译：根据本发明的由包括动态数据部分和准静态数据部分的信号帧组成的无线电传输信号的特征在于，各个帧的动态数据部分包含指示符，其中在下面的帧中准静态将重复该相应帧的数据部分。因此，例如，诸如DRM信号的数字短波信号可以在可以执行到该替代频率的快速无缝切换之前容易且令人满意地被检查。执行接收机从第一当前调谐频率到第二替代频率的无缝切换的本发明方法的特征在于，在一段时间段内从在至少一个第二频率上发射的相应信号中接收至少一组采样的步骤在此期间，所述指示器确保仅将已经发送的数据至少一次的信号作为所述第一频率上的信号发送以收集关于所述替代频率的一些信息是安全的。

24. 发明申请

US20080194209A1 Wireless Headphones and Data Transmission Method 有权
标题翻译：无线耳机和数据传输方法
公开(公告)号：US20080194209A1
公开(公告)日：2008-08-14
申请号：US11665689
申请日：2005-10-19
申请人： Axel Haupt , Andre Michaelis , Rolf Meyer , Katrin Huss , Jens Wildhagen
发明人： Axel Haupt , Andre Michaelis , Rolf Meyer , Katrin Huss , Jens Wildhagen
IPC分类号： H04B1/38
CPC分类号： H04L29/12009 , H04H20/63 , H04H40/27 , H04L61/00
摘要： There is provided a wireless headphone unit having at least one electroacoustic transducer and a transmitting/receiving unit for wirelessly receiving first signals which contain audio signals to be reproduced on the electroacoustic transducer and a network identification unit for storing the network identification of the wireless headphone unit, wherein the transmitting/receiving unit is adapted for wirelessly transmitting the network identification of the headphone unit.
摘要翻译：提供了一种无线耳机单元，其具有至少一个电声换能器和用于无线地接收包含要在电声换能器上再现的音频信号的第一信号的发送/接收单元和用于存储无线耳机单元的网络标识的网络识别单元其中所述发送/接收单元适于无线地发送所述耳机单元的网络标识。

25. 发明授权

US07225214B2 Digital filter realization 失效
标题翻译：数字滤波实现
公开(公告)号：US07225214B2
公开(公告)日：2007-05-29
申请号：US10260627
申请日：2002-09-27
申请人： Rolf Nöthlings , Jens Wildhagen
发明人： Rolf Nöthlings , Jens Wildhagen
IPC分类号： G06F17/10
CPC分类号： H03H17/06 , H03H17/0225 , H03H2017/0245 , H03H2218/085
摘要： A digital filter realization is proposed that consists of only one multiplier, i. e. which operates with a higher clock rate and changes coefficient at the multiplier each clock cycle, but in which the clock rate of the multiplier is reduced in comparison to prior art filters by considering equal filter coefficients, e. g. based on the symmetry of FIR filter coefficients. According to the present invention preferably the samples belonging to equal filter coefficients are added in advance in order to reduce the number of multiplications, which concludes in a reduced clock rate for the filter, a reduced needed calculation power, and therefore a reduced power consumption.
摘要翻译：提出了仅由一个乘法器组成的数字滤波器实现， e。其以更高的时钟速率操作，并且在每个时钟周期的乘法器处改变系数，但是与现有技术的滤波器相比，乘法器的时钟速率通过考虑相等的滤波器系数而减小， G。基于FIR滤波器系数的对称性。根据本发明，优选地，预先添加属于相同滤波器系数的样本，以便减少乘法器的数量，其以滤波器的降低的时钟速率，降低的所需计算功率，因此减少的功率消耗得出结论。

26. 发明授权

US07221925B2 Broadcast receiver with antenna/frequency diversity 失效
标题翻译：具有天线/频率分集的广播接收机
公开(公告)号：US07221925B2
公开(公告)日：2007-05-22
申请号：US10145164
申请日：2002-05-13
申请人： Jens Wildhagen
发明人： Jens Wildhagen
IPC分类号： H04B1/10
CPC分类号： H04B7/0857
摘要： Noise and multipath distortions in a broadcast receiver are reduced by an optimal antenna/frequency diversity concept in which the distortions in the audio signal are evaluated to choose a different antenna and/or a different frequency for at least signal parts.
摘要翻译：广播接收机中的噪声和多径失真通过最佳天线/频率分集概念来降低，其中音频信号中的失真被评估为至少信号部分选择不同的天线和/或不同的频率。

27. 发明授权

US07161979B2 Digital filter for IQ-generation, noise shaping and neighbor channel suppression 失效
标题翻译：用于IQ生成，噪声整形和邻道信道抑制的数字滤波器
公开(公告)号：US07161979B2
公开(公告)日：2007-01-09
申请号：US09863487
申请日：2001-05-23
申请人： Jens Wildhagen
发明人： Jens Wildhagen
IPC分类号： H04L7/30 , H04L27/20
CPC分类号： H03H17/0292 , H03H17/0277 , H03H2218/04
摘要： A polyphase filter of order x·N that builds N allpass filters of order x·N has a structure of an allpass filter of order x comprising delay elements with a delay of 1 and at least one multiplier, wherein all delay elements with a delay of 1 are replaced by delay elements with a delay of N and the sampling rate of fS′=fs/N with fs being the sampling rate of the input signal. Preferably the multiplier included in the structure of the allpass filter of order x comprises N-time multiplex multiplication coefficients that are used in a predetermined order.
摘要翻译：构建阶数为xN的N个全通滤波器的阶数xN的多相滤波器具有包括延迟为1的延迟元件和至少一个乘法器的阶数x的全通滤波器的结构，其中具有延迟1的所有延迟元件被替换为具有延迟N的延迟元件和fS'= fs / N的采样率，fs是输入信号的采样率。优选地，包括在阶数x的全通滤波器的结构中的乘法器包括以预定顺序使用的N次多路复用乘法系数。

28. 发明授权

US07110549B2 Noise reduction in a stereo receiver 有权
标题翻译：立体声接收机中的降噪
公开(公告)号：US07110549B2
公开(公告)日：2006-09-19
申请号：US09993092
申请日：2001-11-06
申请人： Jens Wildhagen
发明人： Jens Wildhagen
IPC分类号： H04H5/00
CPC分类号： H04B1/1676 , H04H40/72
摘要： A method to denoise a stereo signal comprising a stereo sum signal and a stereo difference signal, performs a frequency selective stereo to mono blending based on the masking effect of the human auditory system. Therefore, a stereo signal noise reducer, comprising a first filter bank (1) to split the stereo difference signal (1−r) into a plurality of subbands, respective first multipliers (20, . . . , 2N) to weight each of the subbands of the stereo difference signal with a respective corresponding control signal (C0, . . . , CN), and a first adder (3) to sum all weighted subbands of the stereo difference signal (1−r) to build a frequency selective weighted stereo difference signal (diff), within which a number and width of the subbands obtained via the first filter bank (1) are choosen according to the properties of the human auditory system, further comprises a weighting factor determination unit which determines a respective control signal (C0, . . . , CN) frequency selective based on the masking effect of the human auditory system.
摘要翻译：一种对包括立体声和信号和立体声差分信号的立体声信号进行去噪的方法，基于人类听觉系统的掩蔽效应，对频率选择立体声进行单声道混合。因此，立体声信号降噪器包括将立体声差分信号（1-r）分割为多个子带的第一滤波器组（1），相应的第一乘法器（2）。，2 N N）以相应的对应控制信号（C 0，...，C N N）对立体声差分信号的每个子带进行加权， SUB），以及第一加法器（3），用于对立体声差分信号（1-r）的所有加权子带进行求和，以构建频率选择加权立体声差分信号（diff），在该频率选择加权立体声差分信号中，通过根据人类听觉系统的属性来选择第一滤波器组（1），还包括加权因子确定单元，其确定相应的控制信号（C SUB，...，C

29. 发明授权

US06738610B1 Detection of noise in a frequency demodulated FM-audio broadcast signal 失效
标题翻译：在频率解调的FM音频广播信号中检测噪声
公开(公告)号：US06738610B1
公开(公告)日：2004-05-18
申请号：US09653050
申请日：2000-09-01
申请人： Jens Wildhagen
发明人： Jens Wildhagen
IPC分类号： H04B110
CPC分类号： H04B1/1661
摘要： The noise in a frequency demodulated audio signal is detected on the basis of the characteristics of the stereo-multiplex signal to obtain a very reliable information that can be used for the sliding stereo-mono transition, noise blanking and a de-noising of the stereo difference signal. A noise (vd,q(t)) is calculated by performing a coherent amplitude demodulation of the frequency demodulated stereo-multiplex signal with the second harmonic of the pilot carrier that is quadrature to the pilot carrier and as a direct measure for the quality of the signal generating the variance (&sgr;2vd,q) of the noise signal by squaring and thereafter averaging the noise signal.
摘要翻译：基于立体声多路复用信号的特性来检测频率解调音频信号中的噪声，以获得可用于滑动立体声单声道转换，噪声消隐和立体声去噪的非常可靠的信息差分信号。通过对与导频载波正交的导频载波的二次谐波进行频率解调立体声多路复用信号的相干幅度解调来计算噪声（vd，q（t）），并且作为对导频载波的质量的直接测量该信号通过平均噪声信号产生噪声信号的方差（σ<2vd，q），然后平均噪声信号。

30. 发明授权

US06671378B1 Detection of noise in a frequency demodulated FM audio broadcast signal 失效
标题翻译：在频率解调的FM音频广播信号中检测噪声
公开(公告)号：US06671378B1
公开(公告)日：2003-12-30
申请号：US09596111
申请日：2000-06-16
申请人： Jens Wildhagen
发明人： Jens Wildhagen
IPC分类号： H04H500
CPC分类号： H04B1/1661
摘要： The noise in a frequency demodulated audio signal is detected on basis of the characteristics of the stereo-multiplex signal to obtain a very reliable information that can be used for the sliding stereo-mono transition, noise blanking and a de-noising of the stereo-difference signal. A noise signal (vd,l(t)−vd,u(t) or vd,u(t)−vd,l(t)) is calculated by subtracting one sideband of the stereo-difference signal from the other sideband of the stereo-difference signal and as a direct measure for the quality of the signal generating the variance (&sgr;2vd) of the noise signal by squaring and thereafter averaging the noise signal.
摘要翻译：基于立体声多路复用信号的特性来检测频率解调音频信号中的噪声，以获得可用于滑动立体声单声道转换，噪声消隐和立体声复用信号的去噪的非常可靠的信息。差分信号。通过从另一个边带中减去立体声 - 差分信号的一个边带来计算噪声信号（vd，l（t）-vd，u（t）或vd，u（t）-vd，l 并且作为产生噪声信号的方差（sigma <2> vd）的信号的质量的直接测量，通过平方和平均噪声信号。

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