Digital filter
    1.
    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

    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 arrangement for deriving a quality signal dependent on the
quality of a received multiplex signal
    2.
    发明授权
    Circuit arrangement for deriving a quality signal dependent on the quality of a received multiplex signal 失效
    用于根据所接收的多路复用信号的质量导出质量信号的电路装置

    公开(公告)号:US5696830A

    公开(公告)日:1997-12-09

    申请号:US522312

    申请日:1995-08-25

    CPC classification number: H04H20/12 H04H40/45

    Abstract: The method for obtaining the quality signal includes multiplying a digital multiplex signal (MPX) by respective reference carrier signals mutually phase shifted by 90.degree. to each other, but otherwise equal, to form a pair of mixed signals (Imr1,Imr2); multiplying the mixed signals (Imr1, Imr2) by respective correction signals (G38c,G38s) to form a pair of corrected mixed signal (Ims1,Ims2); separately multiplying the digital multiplex signal (MPX) by each of two reference pilot signals mutually shifted in phase by 90.degree. relative to each other to form respective derived signals useful for obtaining said correction signals (G38c,G38s); adding said corrected mixed signals (Ims1,Ims2) to each other; multiplying said mixed signals (Imr1,Imr2) by the respective correction signals (G38s,G38c) to form a pair of product signals; subtracting these product signals from each other to form a subtraction result and low-pass filtering the subtraction result to obtain a low-pass-filtered resultant signal from which the quality signal is derived.

    Abstract translation: PCT No.PCT / DE94 / 00320 Sec。 371日期1995年8月25日 102(e)日期1995年8月25日PCT 1994年3月22日PCT公布。 出版物WO94 / 22228 日期1994年9月29日用于获得质量信号的方法包括将数字多路复用信号(MPX)乘以相互相移90°的相应参考载波信号,否则相等,以形成一对混合信号(Imr1, Imr2); 将混合信号(Imr1,Imr2)乘以各个校正信号(G38c,G38s)以形成一对校正混合信号(Ims1,Ims2); 将数字多路复用信号(MPX)分别乘以相互相移90°的两个参考导频信号中的每一个,以形成用于获得所述校正信号(G38c,G38s)的相应导出信号。 将所述校正后的混合信号(Ims1,Ims2)相加; 将所述混合信号(Imr1,Imr2)乘以各个校正信号(G38s,G38c)以形成一对乘积信号; 相互减去这些乘积信号以形成减法结果,并对相减结果进行低通滤波,以获得从其导出质量信号的低通滤波结果信号。

    Radio receiver, in particular a vehicle radio receiver
    3.
    发明授权
    Radio receiver, in particular a vehicle radio receiver 失效
    无线电接收机,特别是车载无线电接收机

    公开(公告)号:US5752177A

    公开(公告)日:1998-05-12

    申请号:US133145

    申请日:1993-10-15

    Abstract: A radio receiver, in particular a vehicle radio receiver, is proposed, which is able to display or output acoustically, traffic news which is contained in digital signals. At least the data memory for the decoding of the digital traffic news and of the display or the output in the correct language is contained on a chip card, which can be inserted into the radio receiver. This makes it possible that, on the one hand, a linguistically adapted output of traffic news is possible, and, on the other hand, in the event of changes in the road network, a simple adaptation without modification of the radio receiver is made possible. Finally, it facilitates the use of the radio receiver worldwide, since the chip card allows regionally specific or country specific local codes to be taken into account.

    Abstract translation: PCT No.PCT / DE92 / 00232 Sec。 371日期:1993年10月15日 102(e)日期1993年10月15日PCT 1991年3月19日PCT公布。 第WO92 / 19093号公报 日期:1992年10月29日提出了一种无线电接收机,特别是车载无线电接收机,其能够在声学上显示或输出包含在数字信号中的交通新闻。 至少用于解码数字交通新闻的数据存储器以及正确语言的显示或输出的数据存储器包含在芯片卡上,该芯片卡可插入到无线电接收器中。 这使得一方面可以使交通新闻的语言适应输出成为可能,另一方面,在道路网络发生变化的情况下,可以使得无需修改无线电接收机的简单适应就可能 。 最后,它有助于全球无线电接收机的使用,因为芯片卡允许考虑区域特定或国家特定的本地代码。

    System for selecting route-relevant information when using the radio
data system (RDS)
    4.
    发明授权
    System for selecting route-relevant information when using the radio data system (RDS) 失效
    使用无线电数据系统(RDS)时选择路由相关信息的系统

    公开(公告)号:US5438687A

    公开(公告)日:1995-08-01

    申请号:US99165

    申请日:1993-07-29

    CPC classification number: H04H20/55 G08G1/093 H04H60/51 H04H2201/13

    Abstract: Traffic Condition information is settled by actuating a key (15, 16, 17, 18) of a four-way toggle switch (8) of a radio receiver in order to specify a directional quadrant. The position (34) of the radio receiver is established by the computer (5), using program comparison and identification methods, and traffic conditions information relating to the selected directional quadrants (30, 31, 32, 33) is issued via an output device (11), for example visually by a display or acoustically via loudspeakers (10) with the aid of a voice synthesizer (7).

    Abstract translation: 通过致动无线电接收机的四通拨动开关(8)的键(15,16,17,18)来确定交通状况信息,以便指定方向性象限。 通过使用程序比较和识别方法由计算机(5)建立无线电接收机的位置(34),并且经由输出设备发出与所选择的方向象限(30,31,32,33)相关的交通状况信息 (11),例如借助于语音合成器(7)通过显示器或声音通过扬声器(10)可视地显示。

    Circuit arrangement for deriving signals for masking audio signals
    5.
    发明授权
    Circuit arrangement for deriving signals for masking audio signals 失效
    用于导出用于屏蔽音频信号的信号的电路布置

    公开(公告)号:US5661810A

    公开(公告)日:1997-08-26

    申请号:US522314

    申请日:1995-08-25

    CPC classification number: H04H40/63 H04H40/72 H04H20/57

    Abstract: The circuit arrangement includes a first low-pass filter (2) for filtering an input signal (H3) proportional to the strength of a received radio signal; a second low-pass filter (3) for filtering the input signal (H3); a first weighting circuit (7) for weighting the first low-pass filter output signal with first coefficients to form a first weighted output signal; a circuit device for forming a masking signal for reducing stereo channel isolation from the first weighted output signal; a second weighting circuit (5) for forming a second weighted output signal weighted with second coefficients from the first low-pass filter output signal or the second low-pass filter output signal according to a switching signal (DD2) indicative of interference in the audio signals; a switch device (4) for selecting the first low-pass filter output signal for weighting in the second weighting circuit means (5) when no interference is indicated by the switching signal (DD2) and the second low-pass filter output signal for weighting in the second weighting circuit means (5) when interference is indicated by the switching signal (DD2); and a circuit device for forming a masking signal for damping the audio signal from the second weighted output signal.

    Abstract translation: PCT No.PCT / DE94 / 00321 Sec。 371日期1995年8月25日 102(e)日期1995年8月25日PCT 1994年3月22日PCT公布。 公开号WO94 / 22229 日期1995年9月29日该电路装置包括:第一低通滤波器(2),用于对与接收的无线电信号的强度成正比的输入信号(H3)进行滤波; 用于对输入信号(H3)进行滤波的第二低通滤波器(3); 第一加权电路(7),用于利用第一系数对第一低通滤波器输出信号进行加权,以形成第一加权输出信号; 电路装置,用于形成用于减少立体声信道隔离的屏蔽信号与第一加权输出信号; 第二加权电路(5),用于根据指示音频中的干扰的切换信号(DD2),从第一低通滤波器输出信号或第二低通滤波器输出信号形成用第二系数加权的第二加权输出信号 信号; 开关装置(4),用于当没有由开关信号(DD2)指示干扰和用于加权的第二低通滤波器输出信号时,在第二加权电路装置(5)中选择用于加权的第一低通滤波器输出信号 在第二加权电路装置(5)中,当由切换信号(DD2)指示干扰时; 以及电路装置,用于形成用于阻尼来自第二加权输出信号的音频信号的屏蔽信号。

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