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    Method and receiver for receiving a radio broadcast signal having encoded contents
    26.
    发明授权
    Method and receiver for receiving a radio broadcast signal having encoded contents 失效
    用于接收具有编码内容的无线电广播信号的方法和接收机

    公开(公告)号：US06961558B1

    公开(公告)日：2005-11-01

    申请号：US09913376

    申请日：1999-12-21

    Applicant: Matthias Herrmann

    Inventor： Matthias Herrmann

    IPC: G10L19/00 ,  H04B1/16 ,  H04H60/23 ,  H04H60/91 ,  H04K1/00 ,  H04L9/08 ,  H04L9/32 ,  H04N5/60 ,  H04M1/66

    CPC classification number: H04K1/00 ,  H04H60/23 ,  H04H60/91 ,  H04N5/602 ,  H04N21/41422 ,  H04N21/6334 ,  H04N21/8106

    Abstract: A receiver for a radio broadcast signal, in particular a car radio, and a method for receiving a radio broadcast signal, including a signal decoder for decoding an audio signal contained in the radio broadcast signal in encoded form, and/or for decoding a data signal contained in the radio broadcast signal in encoded form, the signal decoder being operable so that the encoded signal is only decoded, when the signal decoder obtains an external authentication signal, which is received via an external transmission path that is different from the transmission path of the radio broadcast signal.

    Abstract translation: 用于无线电广播信号的接收机，特别是汽车无线电台，以及用于接收无线电广播信号的方法，包括用于解码编码形式的无线电广播信号中包含的音频信号的信号解码器和/或解码数据 信号包含在编码形式的无线电广播信号中，信号解码器可操作，使得编码信号仅被解码，当信号解码器获得经由外部传输路径接收的外部认证信号时，该外部认证信号不同于传输路径 的无线电广播信号。

    Digital filter
    27.
    发明授权
    Digital filter 失效
    数字滤波器

    公开(公告)号：US5717726A

    公开(公告)日：1998-02-10

    申请号：US522300

    申请日：1995-09-05

    Applicant: Matthias Herrmann ,  Jurgen Kaesser

    Inventor： Matthias Herrmann ,  Jurgen Kaesser

    IPC: H03H17/04 ,  H03H17/02 ,  H04B1/10 ,  H04B1/16 ,  H04B1/26 ,  H04B1/64 ,  H04H20/88

    CPC classification number: H03H17/0294 ,  H03H2017/0295

    Abstract: The digital filter includes a first multiplier (2) receiving an input signal, an adder (3) connected to the first multiplier (2) to receive its output signal, a delay element (6) connected to the adder (3) to receive its output signal, a second multiplier (7) connected between the delay element (6) and a second input of the adder (3) in a feedback branch, a device (16) for supplying either of two values (K1.1, K1.2) of a first multiplier coefficient to the first multiplier (2) and a device (17) for supplying either of two values (K2.1, K2.2) of a second multiplier coefficient to the second multiplier (7). The second one (K2.2) of the two values of the second multiplier coefficient is advantageously 0, while the second one (K1.2) of the first multiplier coefficient values is equal to a quotient of a predetermined first one of the first multiplier coefficient values and a difference between one and a predetermined first one of the second multiplier coefficient values.

    Abstract translation: PCT No.PCT / DE94 / 00294 Sec。 371 1995年9月5日第 102（e）1995年9月5日PCT PCT 1994年3月17日PCT公布。 第WO94 / 22219号公报 日期1994年9月29日数字滤波器包括接收输入信号的第一乘法器（2），连接到第一乘法器（2）以接收其输出信号的加法器（3），连接到加法器的延迟元件（6） 3）接收其输出信号;在反馈分支中连接在所述延迟元件（6）和所述加法器（3）的第二输入端之间的第二乘法器（7），用于提供两个值（K1 1，K1.2）和用于将第二乘数系数的两个值（K2.1，K2.2）中的任一个提供给第二乘法器（2）的装置（17） 7）。 第二乘法系数的两个值的第二个（K2.2）有利地为0，而第一乘法系数值的第二个（K1.2）等于第一乘法器中预定的第一乘数的商 系数值和第一乘法器系数值中的一个和预定的第一个之间的差。

    Circuit for suppression of short-lived noise-phenomena in a digital audio signal
    29.
    发明授权
    Circuit for suppression of short-lived noise-phenomena in a digital audio signal 失效
    用于抑制数字音频信号中短暂的噪声现象的电路

    公开(公告)号：US5594799A

    公开(公告)日：1997-01-14

    申请号：US218651

    申请日：1994-03-28

    Applicant: Matthias Herrmann

    Inventor： Matthias Herrmann

    IPC: H04B1/10 ,  H03G3/00 ,  H04B1/16 ,  H04H20/26 ,  H04H5/00

    CPC classification number: H04H20/26 ,  H03G3/00 ,  H04H2201/13

    Abstract: In a circuit for suppressing short-lived noise phenomena in a digital audio signal, in particular during a temporary test reception of another transmitter, the audio signal is multiplied by a factor which, prior to the appearance of the noise phenomenon, is brought from a maximum value to a minimum value in accordance with a predetermined time function, and at the end of the noise phenomenon, is returned to a maximum value. The invention has special application to the Radio Data System defined by the European Broadcasting Union, and the testing of "Alternative Frequencies" in that system.

    Abstract translation: 在用于抑制数字音频信号中的短暂噪声现象的电路中，特别是在另一个发射机的临时测试接收期间，将音频信号乘以在出现噪声现象之前，从 根据预定时间函数的最大值到最小值，并且在噪声现象结束时，返回到最大值。 本发明对由欧洲广播联盟定义的无线电数据系统和该系统中的“替代频率”的测试具有特殊应用。

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