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1. 发明授权

US09374117B2 Stereo decoding system 有权
标题翻译：立体声解码系统
公开(公告)号：US09374117B2
公开(公告)日：2016-06-21
申请号：US13557028
申请日：2012-07-24
申请人： Stefan Gierl , Christoph Benz , Andreas Körner , Karl-Anton Becker
发明人： Stefan Gierl , Christoph Benz , Andreas Körner , Karl-Anton Becker
IPC分类号： H04B1/16
CPC分类号： H04B1/1676
摘要： A system for decoding a stereo multiplex signal, including one or more devices operable to convert the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−R). The sum signal and the difference signal may be derived from a left stereo signal (L) and right stereo signal (R). The system may also be operable to determine a first transfer function HL(f) and a second transfer function (HR(f)) from the sum signal (L+R) and the difference signal (L−R). Further, the system may be operable to filter the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L), and filter the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).
摘要翻译：一种用于解码立体声多路复用信号的系统，包括可操作以将立体声多路复用信号转换为和信号（L + R）和差分信号（L-R）的一个或多个设备。和信号和差分信号可以从左立体声信号（L）和右立体声信号（R）导出。系统还可以从和信号（L + R）和差分信号（L-R）确定第一传递函数HL（f）和第二传递函数（HR（f））。此外，该系统可以用于根据第一传递函数对和信号（L + R）进行滤波以提供左立体声信号（L），并且根据第二传递函数对和信号（L + R）进行滤波，提供正确的立体声信号（R）。

2. 发明申请

US20130028425A1 Stereo Decoding System 有权
标题翻译：立体声解码系统
公开(公告)号：US20130028425A1
公开(公告)日：2013-01-31
申请号：US13557028
申请日：2012-07-24
申请人： Stefan Gierl , Christoph Benz , Andreas Körner , Karl-Anton Becker
发明人： Stefan Gierl , Christoph Benz , Andreas Körner , Karl-Anton Becker
IPC分类号： H04R5/00
CPC分类号： H04B1/1676
摘要： A system for decoding a stereo multiplex signal, including one or more devices operable to convert the stereo multiplex signal into a sum signal (L+R) and a difference signal (L−R). The sum signal and the difference signal may be derived from a left stereo signal (L) and right stereo signal (R). The system may also be operable to determine a first transfer function HL(f) and a second transfer function (HR(f)) from the sum signal (L+R) and the difference signal (L−R). Further, the system may be operable to filter the sum signal (L+R) according to the first transfer function to provide the left stereo signal (L), and filter the sum signal (L+R) according to the second transfer function to provide the right stereo signal (R).
摘要翻译：一种用于解码立体声多路复用信号的系统，包括可操作以将立体声多路复用信号转换为和信号（L + R）和差分信号（L-R）的一个或多个设备。和信号和差分信号可以从左立体声信号（L）和右立体声信号（R）导出。系统还可以从和信号（L + R）和差分信号（L-R）确定第一传递函数HL（f）和第二传递函数（HR（f））。此外，该系统可以用于根据第一传递函数对和信号（L + R）进行滤波以提供左立体声信号（L），并且根据第二传递函数对和信号（L + R）进行滤波，提供正确的立体声信号（R）。

3. 发明授权

US07254378B2 Receiver system for decoding data embedded in an electromagnetic signal 有权
标题翻译：用于解码嵌入电磁信号中的数据的接收机系统
公开(公告)号：US07254378B2
公开(公告)日：2007-08-07
申请号：US10841236
申请日：2004-05-07
申请人： Christoph Benz , Andreas Körner , Stefan Gierl
发明人： Christoph Benz , Andreas Körner , Stefan Gierl
IPC分类号： H04B1/06
CPC分类号： H04H40/09 , H03J1/0083 , H03J7/186 , H04H20/34 , H04H20/55 , H04H2201/13 , H04H2201/60
摘要： A system for decoding data, such as travel and traffic information, configured in data blocks embedded in an electromagnetic signal, such as a broadcasted radio signal, has been developed. The system includes a method and receiver for decoding the data with a background tuner in a manner that does not impair the ability of the background tuner to demodulate other signals. While a main tuner is tuned to demodulate a first electromagnetic signal to produce a data stream, the background tuner is switched to decode the data blocks only when the data blocks are expected to be received. In the remaining time, the background tuner is free to demodulate other signals to support a diversity or other function. If a data block is not received, or not received when expected, the background tuner returns to demodulating one or more other frequencies after a predetermined time interval has elapsed.
摘要翻译：已经开发了用于解码嵌入在诸如广播无线电信号的电磁信号中的数据块中的诸如旅行和交通信息之类的数据的系统。该系统包括用于以不损害背景调谐器解调其他信号的能力的方式用背景调谐器对数据进行解码的方法和接收器。当主调谐器被调谐以解调第一电磁信号以产生数据流时，仅当期望接收数据块时，才将背景调谐器切换到对数据块进行解码。在剩余时间内，背景调谐器可以自由地解调其他信号，以支持多样性或其他功能。如果未预期数据块被接收或未被接收，则在经过预定时间间隔之后，背景调谐器返回到解调一个或多个其它频率。

4. 发明授权

US07889871B2 Apparatus for multichannel sound reproduction system 有权
标题翻译：多通道声音再现系统的装置
公开(公告)号：US07889871B2
公开(公告)日：2011-02-15
申请号：US11455913
申请日：2006-06-19
申请人： Stefan Gierl , Christoph Benz , Hans-Juergen Nitzpon , Andreas Koerner
发明人： Stefan Gierl , Christoph Benz , Hans-Juergen Nitzpon , Andreas Koerner
IPC分类号： H04H40/54
CPC分类号： H04R5/02 , H04B1/1661 , H04H40/81
摘要： The sound reproduction of a multichannel sound reproduction system with a plurality of speakers which is connected to the output of an FM stereo receiver is controlled by a control signal derived from the reception quality. Preferably, the control signal from the FM stereo receiver for controlling the stereo and mono components is also employed to control the multichannel sound reproduction system. For example, stereo, pseudo-stereo or mono reproduction are provided in the multichannel sound reproduction system in response to the stereo component within the output signal.
摘要翻译：具有连接到FM立体声接收机的输出的多个扬声器的多声道声音再现系统的声音再现由从接收质量导出的控制信号来控制。优选地，来自用于控制立体声和单声道分量的FM立体声接收机的控制信号也被用于控制多声道声音再现系统。例如，响应于输出信号内的立体声分量，在多声道声音再现系统中提供立体声，伪立体声或单声道再现。

5. 发明申请

US20080170708A1 SYSTEM FOR SUPPRESSING AMBIENT NOISE IN A HANDS-FREE DEVICE 有权
标题翻译：用于在无手机设备中抑制环境噪声的系统
公开(公告)号：US20080170708A1
公开(公告)日：2008-07-17
申请号：US11966198
申请日：2007-12-28
申请人： Stefan Gierl , Christoph Benz
发明人： Stefan Gierl , Christoph Benz
IPC分类号： A61F11/06
CPC分类号： G10L21/0208 , G10L2021/02165 , G10L2021/02168
摘要： In order to suppress as much noise as possible in a hands-free device in a motor vehicle, for example, two microphones (M1, M2) are spaced a certain distance apart, the output signals (MS1, MS2) of which are added in an adder (AD) and subtracted in a subtracter (SU). The sum signal (S) of the adder (AD) undergoes a Fourier transform in a first Fourier transformer (F1), and the difference signal (D) of the subtracter (SU) undergoes a Fourier transform in a second Fourier transformer (F2). From the two Fourier transforms R(f) and D(f), a speech pause detector (P) detects speech pauses, during which a third arithmetic unit (R) calculates the transfer function HT of an adaptive transformation filter (TF). The transfer function of a spectral subtraction filter (SF), at the input of which the Fourier transform R(f) of the sum signal (S) is applied, is generated from the spectral power density Srr of the sum signal (S) and from the interference power density Snn generated by the adaptive transformation filter (TF). The output of the spectral subtraction filter (SF) is connected to the input of an inverse Fourier transformer (IF), at the output of which an audio signal (A) can be picked up in the time domain which is essentially free of ambient noise.
摘要翻译：为了在机动车辆的免提装置中抑制尽可能多的噪声，例如，两个麦克风（M 1，M 2）间隔一定距离，输出信号（MS 1，MS 2）它们被加到加法器（AD）中并在减法器（SU）中减去。加法器（AD）的和信号（S）在第一傅立叶变换器（F 1）中进行傅里叶变换，减法器（SU）的差分信号（D）在第二傅里叶变换器（F 2）。从两个傅立叶变换R（f）和D（f）中，语音暂停检测器（P）检测语音暂停，在此期间第三运算单元（R）计算传递函数H < 自适应变换滤波器（TF）。在加到和信号（S）的傅立叶变换R（f）的输入处的频谱减法滤波器（SF）的传递函数是从光谱功率密度S rr < 的和信号（S）和由自适应变换滤波器（TF）生成的干扰功率密度S N n N N。频谱减法滤波器（SF）的输出连接到逆傅里叶变换器（IF）的输入端，其输出端可以在基本上没有环境噪声的时域中拾取音频信号（A）。

6. 发明授权

US07065217B2 Apparatus and method for multichannel sound reproduction system 有权
公开(公告)号：US07065217B2
公开(公告)日：2006-06-20
申请号：US10092374
申请日：2002-03-05
申请人： Stefan Gierl , Christoph Benz , Hans-Juergen Nitzpon , Andreas Koerner
发明人： Stefan Gierl , Christoph Benz , Hans-Juergen Nitzpon , Andreas Koerner
IPC分类号： H04H5/00
CPC分类号： H04R5/02 , H04B1/1661 , H04H40/81
摘要： The sound reproduction of a multichannel sound reproduction system with a plurality of speakers which is connected to the output of an FM stereo receiver is controlled by a control signal derived from the reception quality. Preferably, the control signal from the FM stereo receiver for controlling the stereo and mono components is also employed to control the multichannel sound reproduction system. For example, stereo, pseudo-stereo or mono reproduction are provided in the multichannel sound reproduction system in response to the stereo component within the output signal.

7. 发明申请

US20060046676A1 Method for evaluating the redeption quality of a stereo radio set and stereo radio set 审中-公开
标题翻译：用于评估立体声无线电设备和立体声无线电设备的重新检测质量的方法
公开(公告)号：US20060046676A1
公开(公告)日：2006-03-02
申请号：US10519773
申请日：2003-06-26
申请人： Christoph Benz , Stefan Gierl
发明人： Christoph Benz , Stefan Gierl
IPC分类号： H04B17/00
CPC分类号： H04S1/007 , H04H40/45
摘要： According to the invention, a precise criterion for evaluating the reception quality is derived in a stereo radio set from the signal energy or power of the upper and lower sideband (OS, US) of the L−R signal (L−R) of the stereo multiplex signal (MPX). To achieve this, the upper sideband (OS) is filtered out of the L−R signal (L−R) using a first bandpass filter (BP1) and is mixed with an auxiliary carrier (H) of 38 KHz in a first mixer (M1) and shifted to the baseband. Similarly, the lower sideband (US) is filtered out of the L−R signal (L−R) using a second bandpass filter (BP2) and is mixed in a second mixer (M2) with an auxiliary carrier (H) of KHz and shifted to the baseband. The output signal of the first mixer (M1) is filtered in a first lowpass filter (TP1), whilst the output signal of the second mixer (M2) is filtered in a second lowpass filter (TP2). The cross-correlation (Q), which represents an extremely precise measurement of reception quality, is formed in a unit (K) from the output signals of the two lowpass filters (TP1, TP2). The greater the cross-correlation, the higher the reception quality.
摘要翻译：根据本发明，根据立体声多路复用信号的LR信号（LR）的上下边带（OS，US）的信号能量或功率，在立体声无线电设置中导出用于评估接收质量的精确标准（ MPX）。为了实现这一点，使用第一带通滤波器（BP 1）将上边带（OS）从LR信号（LR）中滤出，并在第一混频器（M1）中与38KHz的辅助载波（H）混合，并转移到基带。类似地，使用第二带通滤波器（BP2）从LR信号（LR）中滤出下边带（US），并在第二混频器（M 2）与KHz的辅助载波（H）混合，并转移到基带。第一混频器（M 1）的输出信号在第一低通滤波器（TP 1）中被滤波，而第二混频器（M 2）的输出信号在第二低通滤波器（TP 2）中被滤波。代表非常精确的接收质量测量的互相关（Q）根据两个低通滤波器（TP 1，TP 2）的输出信号以单位（K）形成。互相关越大，接收质量越高。

8. 发明申请

US20050195920A1 FM radio receiver processing system 有权
标题翻译： FM无线电接收机处理系统
公开(公告)号：US20050195920A1
公开(公告)日：2005-09-08
申请号：US11071017
申请日：2005-03-03
申请人： Stefan Gierl , Christoph Benz , Dieter Jurzizta
发明人： Stefan Gierl , Christoph Benz , Dieter Jurzizta
IPC分类号： H04B1/18 , H04B1/28
CPC分类号： H04B1/28 , H04H2201/13
摘要： A processing front-end for FM radio signals includes a receiver, a filter, and a mixer. The receiver obtains an FM radio signal including data content centered at a data frequency and programming content. The filter is coupled to the receiver and removes the programming content from the FM radio signal. The mixer accepts the filtered FM radio signal and shifts the center frequency of the data content to a lower frequency than the first frequency. The lower frequency is selected according to a sampling rate available in an analog-to-digital converter present in a subsequent processing stage, typically a low cost digital signal processor.
摘要翻译： FM无线电信号的处理前端包括接收器，滤波器和混频器。接收器获得包括以数据频率为中心的数据内容和节目内容的FM无线电信号。滤波器耦合到接收器，并从FM无线电信号中去除节目内容。混频器接收经滤波的FM无线电信号，并将数据内容的中心频率移位到比第一频率低的频率。根据存在于后续处理阶段（通常是低成本数字信号处理器）中的模数转换器中可用的采样率来选择较低频率。

9. 发明申请

US20050152559A1 Method for supressing surrounding noise in a hands-free device and hands-free device 有权
标题翻译：用于在免提装置和免提装置中抑制周围噪声的方法
公开(公告)号：US20050152559A1
公开(公告)日：2005-07-14
申请号：US10497748
申请日：2002-12-04
申请人： Stefan Gierl , Christoph Benz
发明人： Stefan Gierl , Christoph Benz
IPC分类号： G10L21/02 , A61F11/06 , G10K11/16
CPC分类号： G10L21/0208 , G10L2021/02165 , G10L2021/02168
摘要： In order to suppress as much noise as possible in a hands-free device in a motor vehicle, for example, two microphones (M1, M2) are spaced a certain distance apart, the output signals (MS1, MS2) of which are added in an adder (AD) and subtracted in a subtracter (SU). The sum signal (S) of the adder (AD) undergoes a Fourier transform in a first Fourier transformer (F1), and the difference signal (D) of the subtracter (SU) undergoes a Fourier transform in a second Fourier transformer (F2). From the two Fourier transforms R(f) and D(f), a speech pause detector (P) detects speech pauses, during which a third arithmetic unit (R) calculates the transfer function HT of an adaptive transformation filter (TF). The transfer function of a spectral subtraction filter (SF), at the input of which the Fourier transform R(f) of the sum signal (S) is applied, is generated from the spectral power density Srr of the sum signal (S) and from the interference power density Snn generated by the adaptive transformation filter (TF). The output of the spectral subtraction filter (SF) is connected to the input of an inverse Fourier transformer (IF), at the output of which an audio signal (A) can be picked up in the time domain which is essentially free of ambient noise.
摘要翻译：为了在机动车辆的免提装置中抑制尽可能多的噪声，例如，两个麦克风（M 1，M 2）间隔一定距离，输出信号（MS 1，MS 2）它们被加到加法器（AD）中并在减法器（SU）中减去。加法器（AD）的和信号（S）在第一傅立叶变换器（F 1）中进行傅里叶变换，减法器（SU）的差分信号（D）在第二傅里叶变换器（F 2）。从两个傅立叶变换R（f）和D（f）中，语音暂停检测器（P）检测语音暂停，在此期间第三运算单元（R）计算传递函数H < 自适应变换滤波器（TF）。在加到和信号（S）的傅立叶变换R（f）的输入处的频谱减法滤波器（SF）的传递函数是从光谱功率密度S rr < 的和信号（S）和由自适应变换滤波器（TF）生成的干扰功率密度S N n N N。频谱减法滤波器（SF）的输出连接到逆傅里叶变换器（IF）的输入端，其输出端可以在基本上没有环境噪声的时域中拾取音频信号（A）。

10. 发明申请

US20070206712A1 PHASE-LOCKED LOOP FOR SYNCHRONIZATION WITH A SUBCARRIER CONTAINED IN AN INTELLIGENCE SIGNAL 审中-公开
标题翻译：与包含在智能信号中的SUBCARRIER同步的锁相环
公开(公告)号：US20070206712A1
公开(公告)日：2007-09-06
申请号：US11622722
申请日：2007-01-12
申请人： Stefan Gierl , Christoph Benz
发明人： Stefan Gierl , Christoph Benz
IPC分类号： H03L7/06
CPC分类号： H03L7/0992 , H03J7/065
摘要： To ensure that a phase-locked loop locks quickly to the pilot tone of the stereo-multiplex signal when a new transmitter is tuned in, the stereo-multiplex signal is multiplied in a multiplier M by the quadrature component of the pilot tone generated by a digital oscillator, is low-pass-filtered in a low-pass filter, and is fed as a control signal to the oscillator which is composed of a table of length N and a counter for addressing the table entries. The zero phase angle φ0 is set by a counter offset n0 by incrementing or decrementing the counter. It is advantageous to employ a virtual table of length N+ which is larger than the length N of the real table. To access the real table, however, only the corresponding MSBs of the actual count n(k) are used which match the address space of the real table of length N.
摘要翻译：为了确保当新的发射机被调谐时，锁相环快速锁定到立体声多路复用信号的导频音，立体声多路复用信号乘以乘法器M乘以由a产生的导频音的正交分量数字振荡器在低通滤波器中进行低通滤波，并作为控制信号馈送到由长度为N的表和用于寻址表条目的计数器组成的振荡器。通过递增或递减计数器，通过计数器偏移量n 0 <0>设置零相位角phi <0> 0 。使用大于实际表的长度N的长度N +的虚拟表是有利的。然而，为了访问真实表，仅使用与实际计数n（k）相对应的MSB，其匹配长度为N的实际表的地址空间。

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