公开(公告)号：US5339455A

公开(公告)日：1994-08-16

申请号：US21029

申请日：1993-02-23

Applicant: Lothar Vogt ,  Stefan Bartels ,  Rainer Arnold ,  Detlef Schwarz

Inventor： Lothar Vogt ,  Stefan Bartels ,  Rainer Arnold ,  Detlef Schwarz

IPC: H03G5/24 ,  H04B1/10

CPC classification number: H03G5/24 ,  H04B1/1027 ,  H04B2001/1054

Abstract: A mobile radio receiver, for example, a car radio, needs a circuit to detect and suppress adjacent-channel interference. This can be done by using bandpass filters (14) of differing bandwidth. The present invention dynamically adjusts bandwidth to an optimum value by continuously comparing (13) a first signal level, upstream of the bandpass filter, to a second signal level, downstream of the bandpass filter, to derive a difference value representative of adjacent-channel interference, then uses an electronically controlled selector switch (6) to select a particular filter (14.sub.N) whose bandwidth is sufficiently narrow to cut out the interfering broadcast signal. A table associating each magnitude range of interference with a particular filter bandwidth assures that bandwidth is broadened as interference diminishes, thereby assuring sufficient reception signal strength.

Abstract translation: 诸如汽车无线电的移动无线电接收机需要电路来检测和抑制相邻信道干扰。 这可以通过使用不同带宽的带通滤波器（14）来完成。 本发明通过将带通滤波器的上游的第一信号电平（13）与带通滤波器的下游的第二信号电平连续地进行比较，将带宽动态地调整为最佳值，以导出表示相邻信道干扰的差值 ，然后使用电子控制的选择器开关（6）来选择其带宽足够窄的特定滤波器（14N）以切断干扰广播信号。 将每个幅度范围的干扰与特定滤波器带宽相关联的表格确保了随着干扰减小而使带宽变宽，从而确保足够的接收信号强度。

公开(公告)号：US20130315355A1

公开(公告)日：2013-11-28

申请号：US13880955

申请日：2011-12-14

Applicant: Lothar Vogt

Inventor： Lothar Vogt

IPC: H04B7/08

CPC classification number: H04B7/0814 ,  H04B7/0842

Abstract: Method for operating a reception apparatus for radio-frequency signals, wherein at least two antennas (2, 4) for receiving and further processing the radio-frequency signals are provided, wherein the reception quality of the received radio-frequency signals is taken as a basis for effecting changeover, characterized in that the entire frequency range of the radio-frequency signals received by the respective antenna (2, 4) is converted from analogue to digital signals by means of a wideband converter (6, 7), and then frequency selection takes place.

Abstract translation: 用于操作用于射频信号的接收装置的方法，其中提供用于接收和进一步处理所述射频信号的至少两个天线（2,4），其中所接收的射频信号的接收质量被视为 其特征在于，由各个天线（2,4）接收的射频信号的整个频率范围通过宽带转换器（6,7）从模拟信号转换成数字信号，然后频率 选择发生。

公开(公告)号：US07269396B2

公开(公告)日：2007-09-11

申请号：US10473563

申请日：2002-03-23

Applicant: Lothar Vogt ,  Detlev Nyenhuis

Inventor： Lothar Vogt ,  Detlev Nyenhuis

IPC: H04B17/02

CPC classification number: H04B7/0871 ,  H04B7/0874 ,  H04H40/18 ,  H04H2201/13 ,  H04H2201/60

Abstract: A method and a device for a receiver for electromagnetic waves having at least two antennas are described; using this method and this device it is possible to effectively suppress multipath interference, while a portion of the antenna signals may also be utilized for other purposes at least temporarily, e.g., to allow better utilization of the possibilities of RDS activities. To do so, a first antenna signal (1) is used as the basis for generating a playback signal (23) when the signal quality of the first antenna signal (1) is above a defined threshold for undisturbed reception—case 1. In this case 1, the signal quality of the first antenna signal (1) is determined. If the signal quality of the first antenna signal (1) falls below this threshold—case 2—then a new signal y generated from at least two antenna signals (1, 2) is used as the basis for generating the playback signal (23). In case 2, the signal quality of new generated signal y and the signal quality of at least one antenna signal (2) are determined. New generated signal y is used as the basis for generating the playback signal (23) as long as the signal quality determined for the one antenna signal (2) is below this threshold and is evaluated as being inferior to the signal quality of the new generated signal y.

Abstract translation: 描述了具有至少两个天线的用于电磁波的接收机的方法和装置; 使用该方法和该装置可以有效地抑制多路径干扰，而天线信号的一部分也可以至少暂时用于其他目的，例如以便更好地利用RDS活动的可能性。 为了这样做，当第一天线信号（1）的信号质量高于未受干扰的接收情况1的定义阈值时，第一天线信号（1）被用作产生重放信号（23）的基础。在此 情况1，确定第一天线信号（1）的信号质量。 如果第一天线信号（1）的信号质量低于该阈值情况2，则使用从至少两个天线信号（1,2）产生的新信号y作为产生重放信号（23）的基础， 。 在情况2中，确定新产生的信号y的信号质量和至少一个天线信号（2）的信号质量。 只要为一个天线信号（2）确定的信号质量低于该阈值并将其评估为低于新生成的信号（23）的信号质量，则将新生成的信号y用作生成重放信号（23）的基础 信号y

公开(公告)号：US5461340A

公开(公告)日：1995-10-24

申请号：US288555

申请日：1994-08-10

Applicant: Djahanyar Chahabadi ,  Lothar Vogt

Inventor： Djahanyar Chahabadi ,  Lothar Vogt

IPC: H03D1/00 ,  H03D1/22 ,  H04L27/06 ,  H03D1/06

CPC classification number: H03D1/22

Abstract: In an amplitude demodulator for radio receivers, an intermediate frequency signal is converted into a digital intermediate frequency signal. The digital intermediate frequency signal is mixed into the baseband and amplitude demodulated. Either the intermediate frequency signal, or the amplitude demodulated signal, is controlled and amplified or attenuated so that the DC component of the amplitude demodulated signal is kept constant.

Abstract translation: 在无线电接收机的幅度解调器中，中频信号被转换为数字中频信号。 将数字中频信号混入基带并进行幅度解调。 中频信号或幅度解调信号被控制和放大或衰减，使得幅度解调信号的DC分量保持恒定。

公开(公告)号：US5430890A

公开(公告)日：1995-07-04

申请号：US979610

申请日：1992-11-20

Applicant: Lothar Vogt ,  Stefan Bartels ,  Djahanyar Chahabadi ,  Detlev Nyenhuis

Inventor： Lothar Vogt ,  Stefan Bartels ,  Djahanyar Chahabadi ,  Detlev Nyenhuis

IPC: H03J1/00 ,  H04B1/26 ,  H04B1/06

CPC classification number: H04B1/0007 ,  H03J1/005 ,  H04B1/0003 ,  H04B1/0039 ,  H04B1/006 ,  H04B1/26

Abstract: Digital tuning of a locally generated frequency supplied to a frequency converting mixer, a mobile radio receiver is provided with great economy of components by utilizing the sampling rate oscillator for an analog-to-digital converter provided at the output of an analog intermediate frequency amplifier of the receiver as the source of the difference frequency for a phase locked loop (PLL) for control of the phase of a local oscillator for the mixer or mixers. All frequencies used to supply local oscillations to mixers, as well as the operating frequency of the phase locked loop are integer number multiples of the sampling rate pulse generator. Some division stages have fixed dividers and others have divisors selectable by a tuning processor and in some of the divisor connections it is useful to interpose a fixed or selectable-factor multiplier. A sampling rate of 42.75 MHz is recommended and an intermediate frequency amplifier frequency which is a rational number multiple of 57 kHZ, preferably 10.6875 MHz are similarly recommended.

Abstract translation: 提供给频率转换混频器的本地产生的频率的数字调谐，移动无线电接收机通过利用提供在模拟中频放大器的输出端的模数转换器的模拟 - 数字转换器的采样率振荡器，为组件提供了极大的经济性 接收机作为用于混频器或混频器的本地振荡器的相位控制的锁相环（PLL）的差频源。 用于向混频器提供本地振荡的所有频率以及锁相环的工作频率都是采样率脉冲发生器的整数倍数。 一些分割阶段具有固定的分频器，而其他分频器具有可由调谐处理器选择的除数，并且在一些除数连接中，插入固定或可选因子乘数是有用的。 建议采样率为42.75 MHz，并推荐使用频率为57 kHZ，最好为10.6875 MHz的有效数倍的中频放大器频率。

公开(公告)号：US20050010935A1

公开(公告)日：2005-01-13

申请号：US10487140

申请日：2002-08-16

Applicant: Volker Becker ,  Lothar Vogt

Inventor： Volker Becker ,  Lothar Vogt

IPC: G11B17/051 ,  G11B17/04 ,  G11B33/02

CPC classification number: G11B17/056 ,  G11B17/051

Abstract: A drive for storage disc which permits a convenient means of loading and unloading the storage disc. The drive includes a loading device for transport of a storage disc into the drive, the loading device including a carrier for accommodating the storage disc. In a loading position, the carrier remains generally in the drive and, in the direction of an insertion opening of the drive, includes an opening for insertion of the storage disc.

Abstract translation: 用于存储盘的驱动器，其允许方便的装载和卸载存储盘的装置。 驱动器包括用于将存储盘传送到驱动器中的装载装置，该装载装置包括用于容纳存储盘的载体。 在装载位置，托架通常保持在驱动器中，并且在驱动器的插入开口的方向上包括用于插入存储盘的开口。

公开(公告)号：US06628930B1

公开(公告)日：2003-09-30

申请号：US09554837

申请日：2000-07-13

Applicant: Lothar Vogt ,  Karl-Heinz Black

Inventor： Lothar Vogt ,  Karl-Heinz Black

IPC: H04B118

CPC classification number: H04B1/26 ,  H03J1/0083 ,  H04B1/0003 ,  H04B1/0007 ,  H04H20/22 ,  H04H2201/13 ,  H04H2201/60

Abstract: A radio receiver having a circuit arrangement for checking the quality of reception at an alternative frequency to a received transmit frequency. The radio receiver has two tuners for converting the received signals to two different intermediate frequencies and a switch, which is preferably switched by a microprocessor, for optionally forwarding signals from signal processing branches that are each connected to one of the tuners. This reduces the cost of implementing the second receiver, at the same time reducing the barely noticeable impairment of the set program when checking the quality of reception at the alternate frequency. The latter is achieved by positioning the switch upstream from an analog-digital converter, operating at a sampling frequency, of an intermediate frequency stage. The different intermediate frequencies are selected so that they both meet the following condition: f0=(n+R)fa where n is a natural number, and 0≦R≦1 applies. An intermediate frequency filter, a demodulator, possibly a decoder for additional signals, and a test unit for determining signal quality are connected to the analog-digital converter.

Abstract translation: 一种无线电接收机，具有电路装置，用于以接收的发射频率检查在替代频率下的接收质量。 无线电接收机具有用于将接收到的信号转换成两个不同中间频率的两个调谐器，并且优选地由微处理器切换用于可选地转发来自连接到调谐器之一的信号处理分支的信号的开关。 这降低了实现第二接收机的成本，同时在检查在替代频率下的接收质量时减少了设定节目几乎不显着的损害。 后者通过将开关定位在中频阶段的以采样频率工作的模拟数字转换器的上游来实现。 选择不同的中间频率使得它们都满足以下条件：其中n是自然数，并且0 <= R <= 1。 模数转换器连接中频滤波器，解调器，可能用于附加信号的解码器以及用于确定信号质量的测试单元。

公开(公告)号：US5355393A

公开(公告)日：1994-10-11

申请号：US983680

申请日：1992-12-01

Applicant: Detlev Nyenhuis ,  Lothar Vogt

Inventor： Detlev Nyenhuis ,  Lothar Vogt

IPC: H04L27/227 ,  H03J7/18 ,  H03L7/087 ,  H03L7/099 ,  H04H20/34 ,  H04H40/54 ,  H04L27/06

CPC classification number: H03L7/0991 ,  H03J7/183 ,  H03L7/087 ,  H04H20/34 ,  H04H2201/13 ,  H04H40/54

Abstract: A new digital oscillator is described that can be synchronized with a broadcast digital input signal by iteratively rotating the phase of the complex oscillator signal by increasing or decreasing the components, depending upon the phase difference between the broadcast signal and the oscillator output signal.

Abstract translation: 描述了一种新的数字振荡器，其可以通过根据广播信号和振荡器输出信号之间的相位差来增加或减少分量迭代地旋转复振荡器信号的相位而与广播数字输入信号同步。

公开(公告)号：US5119093A

公开(公告)日：1992-06-02

申请号：US528588

申请日：1990-05-24

Applicant: Lothar Vogt ,  Dieter Poschen

Inventor： Lothar Vogt ,  Dieter Poschen

IPC: H03H17/00 ,  H03H17/02 ,  H03H17/06

CPC classification number: H04J3/0632 ,  H03H17/028 ,  H03H17/0628 ,  H03H17/0642 ,  H04L7/0029

Abstract: Sample values of a digital signal of a first sample rate are supplied to a digital filter for conversion into a digital signal of a second sample rate. The coefficients of the digital filter are calculated by a processor from the ratio of the sample rates or are obtained by a read-only memory containing sets of coefficients for respective sample rate ratios for which the apparatus is usable. Filtered sample values are read out of the digital filter at the desired second sample rate. A buffer memory is used at the input of the digital filter and a regulator is provided to prevent fluctuations in the filling of the buffer memory from emptying or exceeding the capacity of the buffer memory.

Abstract translation: 将第一采样率的数字信号的采样值提供给数字滤波器，以转换成第二采样率的数字信号。 数字滤波器的系数由处理器根据采样率的比率计算，或者由包含用于该设备可用的各个采样率的系数组的只读存储器获得。 滤波后的采样值以所需的第二采样率从数字滤波器中读出。 在数字滤波器的输入处使用缓冲存储器，并且提供调节器以防止缓冲存储器的填充的波动排空或超过缓冲存储器的容量。

公开(公告)号：US06810092B1

公开(公告)日：2004-10-26

申请号：US09622738

申请日：2000-10-11

Applicant: Bjoern Jelonnek ,  Lothar Vogt

Inventor： Bjoern Jelonnek ,  Lothar Vogt

IPC: H03D300

CPC classification number: H04L27/14

Abstract: A method and a circuitry for demodulating a digital frequency-modulated signal. After demodulating the digital frequency-modulated signal for generating the signal's amplitude and differential phase value &phgr;, the amplitude of the demodulated signal is compared with a constant at determined sampling times. The phase value of each sampling time is multiplied by a factor, the factor (c) being the product of the amplitude of the determined sampling time and the amplitude of a preceding sampling time, if the amplitude is less than the constant.

Abstract translation: 一种用于解调数字调频信号的方法和电路。 在解调用于产生信号幅度和微分相位值phi的数字频率调制信号之后，将解调信号的幅度与确定的采样时间的常数进行比较。 如果振幅小于常数，则每个采样时间的相位值乘以因子，因子（c）是确定的采样时间的幅度与前一采样时间的振幅的乘积。