专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07978790B2 Method and circuit for carrier control in a quadrature demodulator 失效
标题翻译：正交解调器中载波控制的方法和电路
公开(公告)号：US07978790B2
公开(公告)日：2011-07-12
申请号：US11787205
申请日：2007-04-13
申请人： Franz-Otto Witte
发明人： Franz-Otto Witte
IPC分类号： H04L27/22
CPC分类号： H03D3/009
摘要： The invention relates to a method and a circuit for carrier control in a quadrature demodulator, wherein a complex-value input signal (I, Q) is supplied to a mixer (1) to perform mixing with a mixing frequency (fm) to create a mixed signal (Ir, Qr), the mixed signal (Ir, Qr) is supplied to a processing section (s) to generate a processed signal (Ie, Qe), the processed signal (Ie, Qe) is supplied to phase measurement device (3) in order to measure a phase (φm) of the processed signal (Ie, Qe) and the measured phase (φm) is supplied to a phase controller (4) in order to control the mixing frequency (fm); wherein an idle time (z−d) is created at least during the processing in the processing section (2). To enable a fast switching-on transition, the mixing frequency (fm) is summed or integrated to create a mixing phase (φc), the mixing phase (φc) is used for the mixing operation, as well as fed back to the phase control (4, 23), and an error created by the feedback is compensated for with a time-delayed second feedback of the mixing phase (φc).
摘要翻译：本发明涉及一种用于正交解调器中的载波控制的方法和电路，其中复数值输入信号（I，Q）被提供给混频器（1）以进行与混频（fm）的混频以产生混合信号（Ir，Qr），混合信号（Ir，Qr）被提供给处理部分以产生处理信号（Ie，Qe），处理信号（Ie，Qe）被提供给相位测量装置（3）为了测量处理信号（Ie，Qe）的相位（＆amp; m），并且测量相位（＆phgr; m）被提供给相位控制器（4），以便控制混频（fm ）; 其中至少在处理部分（2）中的处理期间创建空闲时间（z-d）。为了实现快速接通转换，将混合频率（fm）相加或积分以产生混合阶段（＆amp; c），混合阶段（＆phgr; c）用于混合操作，并反馈到相位控制（4,23），并且通过混合阶段（＆amp; c）的时间延迟的第二反馈补偿由反馈产生的误差。

2. 发明授权

US07355374B2 Direct current voltage transformer 失效
标题翻译：直流电压互感器
公开(公告)号：US07355374B2
公开(公告)日：2008-04-08
申请号：US11119374
申请日：2005-04-29
申请人： Franz-Otto Witte , Christian Bock
发明人： Franz-Otto Witte , Christian Bock
IPC分类号： G05F1/613 , G05F1/46
CPC分类号： H02M3/156 , H02M1/12 , H02M1/44
摘要： A DC voltage transformer includes an oscillator, which can be controlled in terms of a characteristic such as its phase and/or frequency, and a modulation circuit that provides a periodic or random control signal to the oscillator. A power switch is connected in series with an inductance between two power supply potentials, the power switch being switched between open and closed states. A first smoothing capacitor is connected directly between the two power supply potentials, and a second smoothing capacitor is arranged in series with a Zener diode, with both the capacitor and diode being connected in parallel with the main terminals of the power switch. A modulated reference signal form the oscillator is connected to the control input of the power switch. The modulation of the reference signal can be of any type, for example a periodic modulation that is a periodic variation of the phase and/or the period of the reference signal made possible by for example a sine wave. The pulse duty factor of the reference signal is used to establish the relation between an input voltage and an output voltage of the transformer.
摘要翻译：直流电压变压器包括可以根据诸如其相位和/或频率的特性来控制的振荡器以及向振荡器提供周期性或随机控制信号的调制电路。电源开关与两个电源电位之间的电感串联连接，电源开关在打开和关闭状态之间切换。第一平滑电容器直接连接在两个电源电位之间，并且第二平滑电容器与齐纳二极管串联布置，电容器和二极管与电源开关的主端子并联连接。振荡器的调制参考信号连接到电源开关的控制输入端。参考信号的调制可以是任何类型，例如周期性调制，其是通过例如正弦波使得可能的参考信号的相位和/或周期的周期性变化。参考信号的脉冲占空因数用于建立变压器的输入电压和输出电压之间的关系。

3. 发明授权

US5923223A Transmission system in which either an in-phase or quadrature component of a transmitted signal is delayed prior to modulation 失效
标题翻译：在调制之前延迟发射信号的同相或正交分量的传输系统
公开(公告)号：US5923223A
公开(公告)日：1999-07-13
申请号：US814873
申请日：1997-03-11
申请人： Miodrag Termerinac , Franz-Otto Witte
发明人： Miodrag Termerinac , Franz-Otto Witte
IPC分类号： H04L27/20 , H04L27/22
CPC分类号： H04L27/2082
摘要： A transmission system and a transmitter (T) for such a system are disclosed for transmitting a digital signal (sr), encoded in symbols (Si), from the transmitter (T) to a receiver (R) at an arbitrary frequency position by quadrature modulation. In the transmitter, one of the two quadrature components (ki, kq) is delayed before the quadrature modulation by a given time interval (td).
摘要翻译：公开了一种用于这种系统的传输系统和发射机（T），用于以任意频率位置以正交方式将从符号（Si）编码的数字信号（sr）从发射机（T）发射到接收机（R）调制。在发射机中，正交调制之前的两个正交分量（ki，kq）中的一个在给定的时间间隔（td）之前被延迟。

4. 发明授权

US5767739A Digital demodulator for quadrature amplitude and phase modulated signals 失效
标题翻译：用于正交幅度和相位调制信号的数字解调器
公开(公告)号：US5767739A
公开(公告)日：1998-06-16
申请号：US792924
申请日：1997-01-21
申请人： Franz-Otto Witte
发明人： Franz-Otto Witte
IPC分类号： H04S1/00 , H04L27/38
CPC分类号： H04S1/007
摘要： Digital demodulator for a quadrature-modulated signal (sq) which transmits a combination signal by amplitude and phase modulation. A quadrature-signal source provides a digitized in-phase component (I) and a digitized quadrature component (Q) of low frequency. A resolver converts the two components (I,Q) into a magnitude signal (b) and a first phase signal (p1). A first feedback control loop and a second feedback control loop that maintains the slope (mp) of the first phase signal (p1) at the zero value and the time average (pm1) at the zero phase position, whereby a third phase signal (p3) is formed. From the resulting signals (b, p3, p3') a decoder forms at least one of the required components (R,L,P).
摘要翻译：用于通过幅度和相位调制发送组合信号的正交调制信号（sq）的数字解调器。正交信号源提供数字化的同相分量（I）和低频的数字化正交分量（Q）。解算器将两个分量（I，Q）转换成幅度信号（b）和第一相位信号（p1）。第一反馈控制回路和第二反馈控制回路，其将第一相位信号（p1）的斜率（mp）保持在零值和零相位置处的时间平均值（pm1），由此第三相位信号（p3 ）形成了。从所得到的信号（b，p3，p3'），解码器形成所需要的分量（R，L，P）中的至少一个。

5. 发明授权

US06314187B1 Method for encryption or decryption using finite group operations 失效
标题翻译：使用有限组操作进行加密或解密的方法
公开(公告)号：US06314187B1
公开(公告)日：2001-11-06
申请号：US09129499
申请日：1998-08-05
申请人： Andreas Menkhoff , Franz-Otto Witte
发明人： Andreas Menkhoff , Franz-Otto Witte
IPC分类号： H04L928
CPC分类号： H04L9/0668 , H04L2209/12
摘要： The invention relates to a method for encrypting or decrypting a sequence of successive data words in a data communications device, the method comprising executing an algorithm in which a sequence of quasi-random encryption words is generated from predetermined start values by performing operations in a finite group, and in which a respective one of the encryption words is combined with a respective one of the data words.
摘要翻译：本发明涉及一种用于在数据通信设备中加密或解密连续数据字序列的方法，该方法包括执行一种算法，其中通过在有限的方法中执行操作从预定的起始值生成准随机加密字序列组，并且其中相应的一个加密字与相应的数据字组合。

6. 发明授权

US5736882A Complementary clock systems 失效
标题翻译：互补时钟系统
公开(公告)号：US5736882A
公开(公告)日：1998-04-07
申请号：US762133
申请日：1996-12-09
申请人： Franz-Otto Witte
发明人： Franz-Otto Witte
IPC分类号： H03K5/151 , H03K17/16 , H03K5/13
CPC分类号： H03K17/162
摘要： A complementary clock system is disclosed for producing antiphase clock signals. The system includes a clock generator for producing a first clock signal (t3) and a second clock signal (t4). A first and second driver stage coupled to the clock generator for driving respective clock lines having a capacitive load that corresponds to a first load capacitance and a second load capacitance, respectively. A switchable current path coupled between the first and second clock lines which contains a gating circuit and at least one inductive element. The gating circuit being in a conducting state essentially during the switching intervals (ti) of the first and second clock signals (t3, t4).
摘要翻译：公开了用于产生反相时钟信号的互补时钟系统。该系统包括用于产生第一时钟信号（t3）和第二时钟信号（t4）的时钟发生器。第一和第二驱动级耦合到时钟发生器，用于分别驱动具有对应于第一负载电容和第二负载电容的电容性负载的相应时钟线。耦合在第一和第二时钟线之间的可切换电流路径，其包含选通电路和至少一个电感元件。门控电路基本上在第一和第二时钟信号（t3，t4）的切换间隔（ti）期间处于导通状态。

7. 发明授权

US08994379B2 Method and device for insulation monitoring of non-grounded electrical DC and AC grids 有权
标题翻译：非接地电气直流和交流电网绝缘监测方法和装置
公开(公告)号：US08994379B2
公开(公告)日：2015-03-31
申请号：US13297022
申请日：2011-11-15
申请人： Frank Brenk , Franz-Otto Witte , Wolfram Strepp
发明人： Frank Brenk , Franz-Otto Witte , Wolfram Strepp
IPC分类号： G01R27/18 , G01R31/02
CPC分类号： G01R27/18 , G01R31/025
摘要： Exemplary methods are directed to insulation monitoring of non-grounded electrical DC power supply systems and AC power supply systems which have a resistive (Rf) and capacitive (Cf) insulation impedance between the power supply system and ground. The method includes applying a pulsed AC voltage (U0) having alternately different pulsed voltage values to the power supply system to be monitored via a resistive system interface (Ri) between the power supply system and ground. The insulation impedance (Rf) between the power supply system and ground is determined using time profiles of transient processes of the measurement voltage (Vm) prior to transient recovery of the power supply system to the respective pulsed voltage value (U0) of two polarity-inverted pulsed voltage value application processes.
摘要翻译：示例性方法涉及在电源系统和地之间具有电阻（Rf）和电容（Cf）绝缘阻抗的非接地电力直流电源系统和交流电源系统的绝缘监测。该方法包括通过电源系统和地之间的电阻系统接口（Ri）将具有交替不同的脉冲电压值的脉冲AC电压（U0）施加到待监控的电源系统。电源系统与接地之间的绝缘阻抗（Rf）使用电源系统瞬态恢复之前的测量电压（Vm）的瞬态过程的时间曲线确定为两个极性电压系统的相应脉冲电压值（U0）反向脉冲电压值应用过程。

8. 发明申请

US20080112509A1 Method and circuit for determining a clock signal sampling instant for symbols of a modulation method 失效
标题翻译：用于确定调制方法的符号的时钟信号采样时刻的方法和电路
公开(公告)号：US20080112509A1
公开(公告)日：2008-05-15
申请号：US11112875
申请日：2005-04-22
申请人： Christian Bock , Franz-Otto Witte , Carsten Noeske
发明人： Christian Bock , Franz-Otto Witte , Carsten Noeske
IPC分类号： H03D1/24 , H04L27/00 , H04L27/22
CPC分类号： H04L7/0054 , H04L27/2273 , H04L27/3827 , H04L2027/0057
摘要： The invention relates to a method for determining the sampling instant of a clock signal (ti) for a circuit for determining symbols (Se) from a digitized signal (sd, S) which is coupled to at least one quadrature signal pair of a modulation method (QAM), wherein the digitized signal is converted to polar signal coordinates (R, α) with a radial component (R).In order to implement an optimization of the sampling instant independently of the frequency or phase offset of the carrier control on which the symbols depend, it is proposed that the rate-of-occurrence distribution of the signals over the radii, which are assigned to the modulation method within the complex plane, be considered at different sampling phases (φi, φi2) as the quality value (G, G*), and that the better quality value be selected from among the multiple rate-of-occurrence determinations. The variation of the sampling phase assigned to this value is subsequently employed to correct the sampling clock signal (ti).
摘要翻译：本发明涉及一种用于确定用于从数字化信号（sd，s）确定符号（S））的电路的时钟信号（t i i i i）的采样时刻的方法，该数字化信号至少与调制方法（QAM）的一个正交信号对，其中数字化信号被转换成具有径向分量（R）的极坐标信号坐标（R，α）。为了实现独立于符号所依赖的载波控制的频率或相位偏移的采样时刻的优化，提出了分配给该信号的半径上的信号的发生率分布调制方法在复平面内被考虑在质量值（G，G *）的不同采样阶段（phi i i i i i i i i>> * * * * * * * * quality quality quality quality quality quality quality quality quality quality quality quality）值从多个发生率确定中选择。随后采用分配给该值的采样相位的变化来校正采样时钟信号（t i i i）。

9. 发明申请

US20050149939A1 Method and device for managing resources in a computer system 审中-公开
标题翻译：用于管理计算机系统中的资源的方法和装置
公开(公告)号：US20050149939A1
公开(公告)日：2005-07-07
申请号：US10498893
申请日：2002-12-20
申请人： Carsten Noeske , Ralf Herz , Franz-Otto Witte
发明人： Carsten Noeske , Ralf Herz , Franz-Otto Witte
IPC分类号： G06F9/38 , G06F9/45 , G06F9/46 , G06F9/50
CPC分类号： G06F9/5011
摘要： The invention relates to a method, and to a device for implementing the method, for managing resources in a computer system in which a plurality of resources is available to execute programs, wherein at least some of the resources are used temporarily or permanently by an executed program, said method comprising the steps of: a) requesting at least one of the resources for allocation to the program, c) saving the resource to be allocated for subsequent restoration of the resource, d) allocating the requested resource to the program, and e) usage of the allocated resource by the program. Resource management is advantageously improved by b) verifying the usage status of the allocated resource, and b1) either: if the resource to be allocated is not in use, proceeding with the allocation and use of the allocated resource (e), b2) or: if the resource to be allocated is in use, proceeding to save (c), and subsequently to allocate (d) and use (e), the allocated resource.
摘要翻译：本发明涉及一种方法以及用于实现该方法的装置，用于管理计算机系统中的资源，其中多个资源可用于执行程序，其中至少一些资源由执行的临时或永久地使用程序，所述方法包括以下步骤：a）请求所述资源中的至少一个用于分配给所述程序，c）保存要分配用于后续资源恢复的资源，d）将所请求的资源分配给所述程序，以及 e）程序使用分配的资源。 b）验证分配资源的使用状态，b1）：如果要分配的资源不在使用中，则进行分配和使用所分配的资源（e），b2）或：如果要分配的资源正在使用，则继续保存（c），然后分配（d）并使用（e）分配的资源。

10. 发明授权

US06215830B1 Carrier control loop for a receiver of digitally transmitted signals 失效
标题翻译：用于数字传输信号接收机的载波控制回路
公开(公告)号：US06215830B1
公开(公告)日：2001-04-10
申请号：US09126889
申请日：1998-07-13
申请人： Miodrag Temerinac , Franz-Otto Witte
发明人： Miodrag Temerinac , Franz-Otto Witte
IPC分类号： H04L2714
CPC分类号： H04L27/2273 , H04L2027/003 , H04L2027/0055 , H04L2027/0065 , H04L2027/0067
摘要： A carrier control loop (1) for a receiver of digitally transmitted signals is disclosed comprising, in the direction of signal flow, a quadrature demodulator (3), a symbol recognition device (4), a detector (9) for forming a phase deviation value (&phgr;d) and/or a frequency deviation value (fd), a feedback device (10), and a variable-frequency oscillator (11) connected to the quadrature demodulator (3). An evaluating device (12) determines from signals (I, Q) of the carrier control loop (1) a reliability value (z) for the measured phase deviation value (&phgr;d) and/or frequency deviation value (fd), and controls the carrier control loop (1) in accordance with the determined reliability value.
摘要翻译：公开了一种用于数字传输信号的接收机的载波控制环路（1），在信号方向上包括正交解调器（3），符号识别装置（4），用于形成相位偏差的检测器（9）值（phid）和/或频率偏差值（fd），反馈装置（10）和连接到正交解调器（3）的可变频率振荡器（11）。评估装置（12）根据载波控制回路（1）的信号（I，Q）确定测量的相位偏差值（phid）和/或频率偏差值（fd）的可靠性值（z），并且控制载波控制回路（1），根据确定的可靠性值。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式