公开(公告)号：US5349699A

公开(公告)日：1994-09-20

申请号：US824205

申请日：1992-01-22

申请人： Peter Erben ,  Helmut Liman ,  Wilhelm Hegeler ,  Harald Bochmann ,  Jurgen Kasser ,  Werner Henze

发明人： Peter Erben ,  Helmut Liman ,  Wilhelm Hegeler ,  Harald Bochmann ,  Jurgen Kasser ,  Werner Henze

IPC分类号： H03J7/18 ,  H04B1/10 ,  H04B1/16 ,  H04H20/26 ,  H04H40/81

CPC分类号： H04H20/22 ,  H04B1/163 ,  H04H2201/13 ,  H04H40/81

摘要： The Radio Data System (RDS) protocol promulgated by the European Broadcasting Union provides for alternate frequencies (AF) for the same broadcast. Receivers periodically switch over to such an alternate frequency, leading to momentary crackling noises. In a radio receiver having a device for temporary switchover from a received frequency to some other frequency, substitute signals are inserted into the audio signals that are interrupted during the temporary switchover. The substitute signals are formed from the audio signals before and optionally also after the temporary switchover.

摘要翻译： 由欧洲广播联盟颁布的无线电数据系统（RDS）协议为同一广播提供了替代频率（AF）。 接收器定期切换到这样的交替频率，导致瞬间的咔嗒声。 在具有用于从接收频率暂时切换到其他频率的设备的无线电接收机中，将替代信号插入到在临时切换期间被中断的音频信号中。 替代信号由临时切换之前的音频信号形成，也可选择地在临时切换之后形成。

公开(公告)号：US5521944A

公开(公告)日：1996-05-28

申请号：US246737

申请日：1994-05-20

申请人： Wilhelm Hegeler ,  Jurgen Kasser ,  Detlev Nyenhuis ,  Lothar Vogt

发明人： Wilhelm Hegeler ,  Jurgen Kasser ,  Detlev Nyenhuis ,  Lothar Vogt

IPC分类号： H04L27/22 ,  H04H20/34 ,  H04H40/18 ,  H04L27/00 ,  H04L27/233

CPC分类号： H04H40/18 ,  H04L27/2332 ,  H04H20/34 ,  H04H2201/13 ,  H04L2027/0057

摘要： In a circuit for a demodulator of a radio data signal in a radio receiver, the multiplex signal in digital form is mixed into the baseband, in two phase positions shifted 90.degree. with respect to each other, after band-pass filtering, together with a reference carrier generated at a sampling clock rate produced in the radio receiver, thus producing a first and a second mix signal. A first and a second auxiliary signal with, respectively, a sine waveform and a cosine waveform are produced. The first mix signal is multiplied by the first auxiliary signal, and the second mix signal by the second auxiliary signal. The results of these multiplications are added together, producing a first output signal. The first mix signal is multiplied by the second auxiliary signal, and the second mix signal by the first auxiliary signal, and the results subtracted from each other, thus producing a second output signal. The phase position of the auxiliary signals is controlled in such a manner that the first output signal corresponds to the radio data signal (RDS) shifted down into the baseband.

摘要翻译： 在无线电接收机中用于无线电数据信号的解调器的电路中，数字形式的多路复用信号在带通滤波之后相对于彼此偏移90°的两个相位位置混合到基带中，以及 以在无线电接收机中产生的采样时钟速率产生的参考载波，从而产生第一和第二混合信号。 产生分别具有正弦波形和余弦波形的第一和第二辅助信号。 第一混合信号乘以第一辅助信号，第二混合信号乘以第二辅助信号。 将这些乘法的结果相加在一起，产生第一个输出信号。 第一混合信号乘以第二辅助信号，第二混合信号乘以第一辅助信号，并将结果彼此相减，从而产生第二输出信号。 以这样的方式控制辅助信号的相位位置，使得第一输出信号对应于向下移入基带的无线电数据信号（RDS）。

公开(公告)号：US5278560A

公开(公告)日：1994-01-11

申请号：US818058

申请日：1992-01-08

申请人： Wilhelm Hegeler ,  Jurgen Kasser

发明人： Wilhelm Hegeler ,  Jurgen Kasser

IPC分类号： H03K5/1536 ,  H03K5/08 ,  H03M1/44

CPC分类号： H03K5/086

摘要： In a circuit arrangement for deriving a binary signal from an alternating voltage (U), in which the alternating voltage can be delivered via a capacitor to the input of a threshold value circuit and a reference voltage obtained by integration serves to adjust the operating point at the input, an up/down counter is provided for deriving the reference voltage, its counting direction being controllable by the binary signal. From the output signal of the up/down counter, a further binary signal is derived, which after integration forms the reference voltage. The circuit is suitable for use in evaluating the data subcarrier component of a Radio Data System (RDS) signal, as defined by European Broadcasting Union (EBU) Technical Standard 3244-E.

摘要翻译： 在用于从交流电压（U）导出二进制信号的电路装置中，其中可以经由电容器将交流电压输送到阈值电路的输入，并且通过积分获得的参考电压用于调整工作点在 输入，提供用于导出参考电压的向上/向下计数器，其计数方向由二进制信号控制。 从上/下计数器的输出信号，导出另外的二进制信号，其在积分后形成参考电压。 该电路适用于评估由欧洲广播联盟（EBU）技术标准3244-E定义的无线电数据系统（RDS）信号的数据子载波分量。

公开(公告)号：US5428827A

公开(公告)日：1995-06-27

申请号：US735059

申请日：1991-07-24

申请人： Jurgen Kasser

发明人： Jurgen Kasser

IPC分类号： H03J7/18 ,  H04B1/16 ,  H04H20/26

CPC分类号： H04H20/22 ,  H04H2201/13

摘要： A radio data system (RDS) receiver has a station selector circuit including a microprocessor, several Alternative Frequency (AF) memory cells, and at least one learning memory cell associated with each AF memory cell. In a preferred embodiment, a counter is associated with each learning memory cell. The AF memory cells store alternative frequencies decoded from a Radio Data System signal. As each station is tuned successfully, i.e. with adequate signal strength, its frequency is stored in one of the learning memory cells. When signal deterioration requires a skip to a new frequency, the "skip frequencies" stored in the learning memory cells are preferred to other frequencies. The counters keep track of how many times, since power-up, each frequency has been successfully tuned, and the frequency with the highest count is the "most preferred" alternative frequency.

摘要翻译： 无线电数据系统（RDS）接收机具有包括微处理器，几个替代频率（AF）存储器单元以及与每个AF存储单元相关联的至少一个学习存储单元的站选择器电路。 在优选实施例中，计数器与每个学习存储器单元相关联。 AF存储单元存储从无线电数据系统信号解码的替代频率。 随着每个站被成功调谐，即具有足够的信号强度，其频率被存储在一个学习存储单元中。 当信号恶化需要跳到新频率时，存储在学习存储单元中的“跳过频率”优于其他频率。 计数器跟踪多少次，自启动以来，每个频率已经被成功调谐，而最高计数的频率是“最优选”的替代频率。

公开(公告)号：US5483694A

公开(公告)日：1996-01-09

申请号：US164127

申请日：1993-12-08

申请人： Stefan Bartels ,  Jurgen Kasser ,  Djahanyar Chahabadi

发明人： Stefan Bartels ,  Jurgen Kasser ,  Djahanyar Chahabadi

IPC分类号： H03G3/20 ,  H04B1/10

CPC分类号： H03G3/3052 ,  H04B1/109

摘要： In a radio receiver with an input circuit which can be supplied with received signals, with a mixer for deriving an IF signal, and with an IF filter, the passband range corresponds to a usable signal range of the received signal, the received signals are amplitude-modified with an auxiliary signal for detecting intermodulation, in the course of which sidebands are generated outside of the useful signal range. The amplitudes of at least one sideband generated by modulation with the auxiliary signal and of the received carrier are compared in the IF signal. In case of deviations from a ratio based on the modulation factor during modulation with the auxiliary signal, a signal indicating the presence of intermodulation is derived.

摘要翻译： 在具有可以提供接收信号的输入电路的无线电接收机中，利用用于导出IF信号的混频器和IF滤波器，通带范围对应于接收信号的可用信号范围，接收信号是振幅 用用于检测互调的辅助信号进行修改，在有用信号范围之外的边带生成的过程中。 在IF信号中比较通过辅助信号和接收载波的调制产生的至少一个边带的振幅。 在与辅助信号调制期间基于调制因子的比率偏离的情况下，导出指示互调的存在的信号。

公开(公告)号：US4543532A

公开(公告)日：1985-09-24

申请号：US481365

申请日：1983-04-01

申请人： Jurgen Kasser

发明人： Jurgen Kasser

IPC分类号： H03D3/00

CPC分类号： H03D3/006 ,  H03D2200/005 ,  H03D2200/0062 ,  H03D2200/0064

摘要： Intermediate frequency FM signals are converted to digital form and the digital words of successive samples are clocked into a three place shift register. The sum of the values in the first and third stages of the register is divided by the value in the middle stage and the quotient values are then averaged by groups or as a moving average to provide the demodulated signal. Errors in the operation of the divider circuit can be avoided by detecting null values of the content of the middle cell of the shift register to suppress erroneous quotients, or else the values from which the quotients are formed are both squared before dividing. In the latter case the dc component can be eliminated from the output by subtracting a constant.

摘要翻译： 中频FM信号被转换为数字形式，连续样本的数字字被计时到三位移位寄存器。 将寄存器的第一和第三级中的值之和除以中间阶段的值，然后通过组对该值进行平均，或作为移动平均值提供解调信号。 可以通过检测移位寄存器的中间单元的内容的空值来抑制误差商，否则可以避免分频器电路的操作错误，否则在分割之前形成商数都是平方的。 在后一种情况下，可以通过减去常数从输出中消除直流分量。

公开(公告)号：US5561716A

公开(公告)日：1996-10-01

申请号：US343385

申请日：1994-11-22

申请人： Jurgen Kasser ,  Stefan Bartels

发明人： Jurgen Kasser ,  Stefan Bartels

IPC分类号： H03D3/00 ,  H03D1/22 ,  H03D5/00 ,  H04S1/00 ,  H04H5/00

CPC分类号： H04S1/00 ,  H03D1/2209

摘要： In a demodulator for a stereo signal transmitted by amplitude and phase modulation of a carrier, a phase signal and a quantity signal are formed. By multiplication of the quantity signal with the tangent of the phase signal reduced by a value to be preset, a difference signal is formed. The value to be preset is generated in such a way as to minimize the direct portion of the difference signal.

摘要翻译： 在通过载波的幅度和相位调制发送的用于立体声信号的解调器中，形成相位信号和量信号。 通过将量信号与相位信号的切线相乘而减少预设的值，形成差分信号。 产生要预设的值，以使差分信号的直接部分最小化。

公开(公告)号：US5222252A

公开(公告)日：1993-06-22

申请号：US744296

申请日：1991-08-13

申请人： Jurgen Kasser

发明人： Jurgen Kasser

IPC分类号： H04H20/88 ,  H04B1/16

CPC分类号： H04B1/1646 ,  H04B1/1661

摘要： An improved FM car radio includes a recognition circuit for detecting intermittent multipath reception from the audio frequency signal, rather than from the intermediate frequency signal, as in prior art detectors. The output signal of the stereo decoder 6 is fed to a recognition circuit containing a 90.degree. phase shifter 14, a multiplier circuit 15, a low-pass filter 16, a rectifier 17, and another low-pass filter 18. The resulting output signal U.sub.q is a measure of the quality of the signal, and can be used to initiate re-tuning to an alternate transmitter. For faster response, the recognition circuit can include a second signal path and a quotient former stage 23, resulting in an output signal U.sub.q *. Either U.sub.q or U.sub.q * is fed back to a threshold value stage 19 for evaluation.

摘要翻译： 改进的FM车载收音机包括用于从音频信号而不是从中频信号检测间歇多路径接收的识别电路，如现有技术的检测器中那样。 立体声解码器6的输出信号被馈送到包含90°移相器14，乘法器电路15，低通滤波器16，整流器17和另一低通滤波器18的识别电路。得到的输出信号 Uq是对信号质量的度量，可用于启动对另一个发射机的重新调谐。 为了更快的响应，识别电路可以包括第二信号路径和商前级23，导致输出信号Uq *。 Uq或Uq *被反馈到阈值级19用于评估。

公开(公告)号：US4704736A

公开(公告)日：1987-11-03

申请号：US808855

申请日：1985-12-13

申请人： Jurgen Kasser

发明人： Jurgen Kasser

IPC分类号： H04B1/10 ,  H03G3/34

CPC分类号： H03G3/345

摘要： For elimination of pulse type interference in an FM receiver by intermittent blanking of the received signal while interfering pulses are present and substitution of a synthetic signal during the blanking intervals, the synthetic signal substituted during the blanking intervals is produced by interpolation using finite duration impulse response digital filters, instead of using the last undisturbed value of the received signal modified by integration of its last value of rate of change with respect to time. The determination of the blanking interval is optimized by reference to the maximum and minimum peak values of the output of an AM detector of the received signal and comparing an interference signal magnitude thus obtained with a threshold value of the interference signal, so as to define the blanking interval as the interval during which the interference signal exceeds the reference signal value. The interference signal compared with the reference value is produced by computing the sum and product of the maximum and minimum peak values, adding the product to the output of the squarer operating on the output of the AM demodulator, multiplying the sum of the maximum and minimum peak values by the AM demodulator output, dividing the product plus squarer sum by the multiplied output of the AM demodulator, forming the arc cosine of the output of the divider and then differentiating the arc cosine value.

摘要翻译： 为了消除FM接收机中的脉冲类型干扰，通过间歇性消隐接收到的信号同时存在干扰脉冲，并且在消隐间隔期间代替合成信号，则在消隐间隔期间替换的合成信号通过使用有限持续时间脉冲响应 数字滤波器，而不是通过将其最近的变化率值相对于时间整合而修改的接收信号的最后未受干扰的值。 通过参考接收信号的AM检测器的输出的最大和最小峰值来优化消隐间隔的确定，并将由此获得的干扰信号幅度与干扰信号的阈值进行比较，以便定义 消隐间隔作为干扰信号超过参考信号值的间隔。 与参考值相比较的干扰信号是通过计算最大和最小峰值的和和乘积来产生的，将乘积加到在AM解调器的输出上工作的平方的输出，乘以最大和最小值之和 通过AM解调器输出的峰值，将乘积加平方和和乘以AM解调器的乘法输出，形成分频器输出的反余弦，然后区分反余弦值。

公开(公告)号：US5673324A

公开(公告)日：1997-09-30

申请号：US215186

申请日：1994-03-21

申请人： Jurgen Kasser ,  Matthias Herrmann

发明人： Jurgen Kasser ,  Matthias Herrmann

IPC分类号： H03H17/04 ,  H03D1/22 ,  H03H17/02 ,  H04B1/10 ,  H04B1/16 ,  H04B1/26 ,  H04B1/30 ,  H04B1/64 ,  H04H20/88 ,  H04H5/00

CPC分类号： H04B1/1661 ,  H04B1/1027

摘要： In a circuit for deriving at least one quality signal that is dependent on the quality of a received signal, where the received signal is demodulated, a first auxiliary signal which is dependent on the field strength, and a second or further auxiliary signal, are derived from the demodulated signal. The auxiliary signal and the second or further auxiliary signal are combined to derive the quality signal.

摘要翻译： 在用于导出取决于接收信号的质量的至少一个质量信号的电路中，其中接收信号被解调，导出依赖于场强的第一辅助信号和第二或另外的辅助信号， 从解调信号。 辅助信号和第二或另外的辅助信号被组合以导出质量信号。