公开(公告)号：US06636165B2

公开(公告)日：2003-10-21

申请号：US10062134

申请日：2002-02-01

申请人： Markus Freidhof

发明人： Markus Freidhof

IPC分类号： H03M700

CPC分类号： H03H17/0288 ,  H03H17/0628 ,  H03H17/0671

摘要： A resampler is used to convert an input digital signal sequence having an input sampling rate into an output digital signal sequence having an output sampling rate (fout). An estimating unit estimates the sampling rate ratio between the input sampling rate and the output sampling rate (fout) and estimates the set point phase of the output signal sequence in observation intervals whose observation length is variable. A controlling system compares the actual phase of the output signal sequence with the set point phase and generates a control signal (RTC,k) as a function of the estimated sampling rate ratio and the deviation of the actual phase from the set point phase. An interpolator interpolates the input signal sequence for generating the output signal sequence at sampling times whose location in time is predetermined by the control signal (RTC,k).

公开(公告)号：US08208594B2

公开(公告)日：2012-06-26

申请号：US12595127

申请日：2008-08-20

申请人： Rubén Villarino-Villa ,  Markus Freidhof ,  Thomas Kuhwald

发明人： Rubén Villarino-Villa ,  Markus Freidhof ,  Thomas Kuhwald

IPC分类号： H04L7/00

CPC分类号： H04L7/0083 ,  G01R31/31709 ,  G01R31/31711 ,  H03L7/06 ,  H04L1/205 ,  H04L7/0087 ,  H04L7/0331

摘要： A method for the recovery of a clock signal from a data signal is provided where the edges of the signals are each represented as a chronologically-ordered sequence of timing points. In one procedural stage, a plurality of timing points of the data signal are processed in parallel as follows: resolving the timing points of the data signal by a nominal clock pulse; estimating the bit-period deviations for the adjusted timing points; and injecting the nominal clock pulse to the estimated bit-period deviations.

摘要翻译： 提供了一种从数据信号恢复时钟信号的方法，其中信号的边缘各自表示为时间顺序的定时点序列。 在一个程序级中，数据信号的多个定时点如下并行处理：通过标称时钟脉冲来解析数据信号的定时点; 估计调整时间点的位周期偏差; 并将标称时钟脉冲注入估计的位周期偏差。

公开(公告)号：US20120105049A1

公开(公告)日：2012-05-03

申请号：US13254873

申请日：2010-02-10

申请人： Georg Ortler ,  Christian Evers ,  Markus Freidhof

发明人： Georg Ortler ,  Christian Evers ,  Markus Freidhof

IPC分类号： G01R23/02

CPC分类号： G01R31/2841 ,  G01R27/28 ,  H03L7/18 ,  H03L7/23

摘要： A measuring device provides a synthesizer device, at least two controlling devices and at least two controlled oscillators. The synthesizer device contains at least one direct digital synthesizer and generates at least two signals of known phase ratio. Signals generated by the synthesizer device form reference signals of at least one controlling device. Signals formed by the controlling devices control the controlled oscillators. The measuring device contains only frequency splitters, which divide by integer division factors.

摘要翻译： 测量装置提供合成器装置，至少两个控制装置和至少两个受控振荡器。 合成器装置包含至少一个直接数字合成器并产生至少两个已知相位比的信号。 由合成器装置产生的信号形成至少一个控制装置的参考信号。 由控制装置形成的信号控制受控振荡器。 测量装置只包含除以整数除数的分频器。

公开(公告)号：US20110267349A1

公开(公告)日：2011-11-03

申请号：US12672492

申请日：2008-06-13

申请人： Michael Reinhold ,  Markus Freidhof

发明人： Michael Reinhold ,  Markus Freidhof

IPC分类号： G06T11/20

CPC分类号： G01R13/029

摘要： Measurement points for display on a two-dimensional pixel-based display device are formed by scanned and digitized measurement values. To this end, the resolution of each measurement point according to time and/or value is higher than the resolution of the two-dimensional pixel-based display device. The measurement points are connected into a continuous measurement point curve if they are not located on directly adjoining pixels. In order to determine the pixels to be depicted of the continuous measurement point curve between two measurement points not located on directly adjoining pixels, the positions of the adjoining measurement points within the associated pixels are taken into consideration.

摘要翻译： 通过扫描和数字化的测量值形成用于在基于二维像素的显示装置上显示的测量点。 为此，根据时间和/或值，每个测量点的分辨率高于二维像素显示装置的分辨率。 如果它们不位于直接相邻的像素上，则测量点连接到连续的测量点曲线。 为了确定不位于直接相邻像素的两个测量点之间的连续测量点曲线的像素，考虑相关像素内相邻测量点的位置。

公开(公告)号：US20100045260A1

公开(公告)日：2010-02-25

申请号：US12299751

申请日：2007-04-19

申请人： Thomas Kuhwald ,  Johann Huber ,  Markus Freidhof

发明人： Thomas Kuhwald ,  Johann Huber ,  Markus Freidhof

IPC分类号： G01R13/34

CPC分类号： G01R13/0254 ,  G01D3/032

摘要： A method for digital triggering of a digital recording of a digitized measurement signal having a superimposed noise signal. The method includes generating from the digitized measurement signal a digital triggering signal for the digital triggering of the digital recording of the measurement signal, and performing band-limitation of the noise signal superimposed on the digitized measurement signal via a low-pass filtering before the digital triggering signal is generated. The bandwidth of the low-pass filtering is adjusted dependent upon edge steepness of the measurement signal, in order to reduce variance σt2 in jitter of the digital triggering signal.

摘要翻译： 一种用于数字触发具有叠加噪声信号的数字化测量信号的数字记录的方法。 该方法包括从数字化测量信号产生用于数字触发测量信号的数字触发的数字触发信号，并且在数字化测量信号之前通过低通滤波对叠加在数字化测量信号上的噪声信号进行频带限制 产生触发信号。 根据测量信号的边缘陡度来调整低通滤波的带宽，以减少数字触发信号的抖动的方差和t2。

公开(公告)号：US20100007329A1

公开(公告)日：2010-01-14

申请号：US12440442

申请日：2007-07-10

申请人： Thomas Kuhwald ,  Markus Freidhof

发明人： Thomas Kuhwald ,  Markus Freidhof

IPC分类号： G01R23/14

CPC分类号： G01R13/0254

摘要： A device, in particular, a multi-channel oscilloscope, for the analysis of at least one measured signal transmitted via a multi-channel system, with several measurement channels. The device includes in each case a sampling device, a baseband mixing device, and a filter device, and an analysis device. The measured signal is supplied to the measurement channels and to the respective sampling devices for simultaneous sampling. The sampled measured signal is supplied to the baseband mixing devices connected downstream of the sampling devices for the mixing of the measured signal down into the baseband, to the filter devices connected downstream of the baseband mixing devices for the decimation of the sampled values of the measured signal in the baseband and to the analysis device connected to the filter devices for the analysis of the measured signal.

摘要翻译： 一种设备，特别是多通道示波器，用于分析通过多通道系统传输的至少一个测量信号，并具有多个测量通道。 该装置在每种情况下包括采样装置，基带混合装置和滤波装置以及分析装置。 测量信号被提供给测量通道和相应的采样装置，用于同时采样。 采样的测量信号被提供给连接在采样装置下游的基带混合装置，用于将测量信号下降到基带，连接到基带混合装置下游的滤波器装置，以抽取所测量的采样值 信号在基带和分析设备连接到滤波器上进行测量信号的分析。

公开(公告)号：US06518894B2

公开(公告)日：2003-02-11

申请号：US10072894

申请日：2002-02-12

申请人： Markus Freidhof

发明人： Markus Freidhof

IPC分类号： H03M700

CPC分类号： H03H17/0288 ,  H03H17/0422 ,  H03H17/0628 ,  H03H17/0671 ,  H03M7/00

摘要： A resampler device and method are used to convert a digital input signal string (Sin) with an input-sampling rate into a digital output signal string (Sout) with a higher output-sampling rate. Prior to interpolation, a time shift (tmod(n)/Tout) is first determined for every sampling time (t′n) of the output signal string (sout) relative to a next sampling time (ti+1) of the input signal string (sin). Then the time shift (&Dgr;t(n)/Tout) of the sampling time (t′n) of the output signal string (Sout) relative to the preceding sampling time (ti) of the input signal string (Sin) is determined from the previously determined time shift (tmod(n)/Tout) relative to the next sampling time (ti+1).