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

US07830217B1 Method and system of vector signal generator with direct RF signal synthesis and parallel signal processing 有权
标题翻译：矢量信号发生器的方法和系统，具有直接RF信号合成和并行信号处理
公开(公告)号：US07830217B1
公开(公告)日：2010-11-09
申请号：US12276718
申请日：2008-11-24
申请人： Anatoli Stein , Semen Volfbeyn , Nahum Guzik
发明人： Anatoli Stein , Semen Volfbeyn , Nahum Guzik
IPC分类号： H03C3/00 , H04L27/20
CPC分类号： H04L27/362 , H04L27/365
摘要： A vector signal generator with direct RF signal synthesis is disclosed. The vector signal generator comprises an RF signal synthesizer, a switch, and a memory. The RF signal synthesizer is configured for converting baseband IQ signals into a modulated digital RF signal. The RF signal synthesizer is connected to an I input, a Q input, a clock input, a control input, and an output, where the clock input is a clock input of the vector signal generator, the control input is a control input of the vector signal generator, and the output is an RF signal output of the vector signal generator. The switch is configured for selecting a source of IQ signals and is connected to an external I input, an external Q input, a stored signal I input, a stored signal Q input, the control input, an I output, and a Q output. The external I input and external Q input are external IQ inputs to the vector signal generator and the I output and the Q output are connected to the I input and the Q input of the RF signal synthesizer. The memory is configured for storing IQ signals samples, said memory being connected to the control input and having a stored I output, connected to the stored signal I input, and a stored Q output connected to the stored signal Q input.
摘要翻译：公开了一种具有直接RF信号合成的矢量信号发生器。矢量信号发生器包括RF信号合成器，开关和存储器。 RF信号合成器被配置用于将基带IQ信号转换成调制的数字RF信号。 RF信号合成器连接到I输入，Q输入，时钟输入，控制输入和输出，其中时钟输入是矢量信号发生器的时钟输入，控制输入是矢量信号发生器，输出是矢量信号发生器的RF信号输出。开关配置为选择IQ信号源，并连接到外部I输入，外部Q输入，存储信号I输入，存储信号Q输入，控制输入，I输出和Q输出。外部I输入和外部Q输入是矢量信号发生器的外部IQ输入，I输出和Q输出连接到RF信号合成器的I输入和Q输入。存储器被配置为存储IQ信号样本，所述存储器连接到控制输入并且具有连接到存储的信号I输入的存储的I输出和连接到存储的信号Q输入的存储的Q输出。

2. 发明授权

US06219683B1 Radially distributed transverse filter 失效
标题翻译：径向分布横向滤波器
公开(公告)号：US06219683B1
公开(公告)日：2001-04-17
申请号：US09124129
申请日：1998-07-29
申请人： Nahum Guzik , Anatoli Stein
发明人： Nahum Guzik , Anatoli Stein
IPC分类号： G06F1710
CPC分类号： H03H17/0219 , H03H17/06
摘要： A radially distributed transverse filter includes a plurality of delay lines of substantially equal electric length sequentially coupled at a like plurality of nodes. The nodes are distributed equidistant from a common position, for example positioned at vertices of a polygon. A plurality of attenuators are distributed radially about the common position and coupled between the nodes and the common position. An adder is located substantially at the common position for summing the attenuator outputs. In this manner, the respective propagation delays of each tap are substantially similar, and imprecision due to variation in propagation delay is therefore mitigated and/or substantially eliminated. The invention has application to high-frequency digital and analog transverse filters, for example filters for equalizers used in Partial Response Maximum Likelihood (PRML) circuits employed in contemporary magnetic recording systems.
摘要翻译：径向分布的横向滤波器包括基本相等的电长度的多条延迟线，其依次耦合在相同的多个节点处。节点从公共位置等距分布，例如位于多边形的顶点。多个衰减器围绕公共位置径向分布并且在节点和公共位置之间耦合。加法器基本上位于用于对衰减器输出求和的公共位置。以这种方式，每个抽头的相应传播延迟基本相似，因此减小和/或基本上消除了由于传播延迟的变化引起的不精确性。本发明适用于高频数字和模拟横向滤波器，例如用于当代磁记录系统中使用的部分响应最大似然（PRML）电路中的均衡器的滤波器。

3. 发明授权

US06772079B2 Method and apparatus for equalization of a signal acquisition system 有权
标题翻译：信号采集系统均衡的方法和装置
公开(公告)号：US06772079B2
公开(公告)日：2004-08-03
申请号：US10082963
申请日：2002-02-26
申请人： Anatoli Stein , Nahum Guzik
发明人： Anatoli Stein , Nahum Guzik
IPC分类号： G01D1800
CPC分类号： H03M1/1038 , G01D18/008 , H03M1/124
摘要： In a signal acquisition system in accordance with the principles of the present invention, a digital signal acquisition system includes a front end, an equalizer and an output system. The front end typically includes an input amplifier and may include one or more preamplifiers, and any one of various input probes. The probes may be directed toward different applications, that is, voltage probes or current probes, for example, and may include preamplifiers that adjust the range of input signals. The output of the probe is typically routed to an input amplifier, which may include various filters and/other signal conditioning circuitry. The system also includes an analog to digital converter that is arranged to receive a conditioned analog input signal from the input amplifier. The analog to digital converter converts the conditioned analog input signal to digitized input signal. The equalizer accepts the digitized input signal and filters the signal to produce a signal that has been compensated for inadequacies in the signal acquisition system's front end. Coefficients for the equalizer are determined and stored within the system during a calibration process. The calibration process employs a model signal acquisition system and the target signal acquisition system to determine a transfer function difference between the systems and uses this difference to compute the equalization coefficients.
摘要翻译：在根据本发明的原理的信号采集系统中，数字信号采集系统包括前端，均衡器和输出系统。前端通常包括输入放大器，并且可以包括一个或多个前置放大器以及各种输入探针中的任何一个。探针可以指向不同的应用，例如电压探针或电流探针，并且可以包括调节输入信号范围的前置放大器。探头的输出通常被路由到输入放大器，其可以包括各种滤波器和/其他信号调节电路。该系统还包括模数转换器，其被配置为从输入放大器接收经调节的模拟输入信号。模数转换器将经调节的模拟输入信号转换为数字化输入信号。均衡器接受数字化的输入信号并对信号进行滤波，以产生信号采集系统前端的不足之处。在校准过程中，均衡器的系数被确定并存储在系统内。校准过程采用模型信号采集系统和目标信号采集系统来确定系统之间的传递函数差异，并使用该差异来计算均衡系数。

4. 发明授权

US6023145A Head and disk tester with a thermal drift-compensated closed-loop positioning system 有权
标题翻译：具有热漂移补偿闭环定位系统的头盘测试仪
公开(公告)号：US6023145A
公开(公告)日：2000-02-08
申请号：US295912
申请日：1999-04-21
申请人： Ufuk Karaaslan , Ilia Bokchtein , Anatoli Stein , Nahum Guzik , Alexander Varlakhanov
发明人： Ufuk Karaaslan , Ilia Bokchtein , Anatoli Stein , Nahum Guzik , Alexander Varlakhanov
IPC分类号： G11B21/08 , G11B5/455 , G11B5/55 , G11B5/596 , G11B21/10 , G11B5/58
CPC分类号： G11B5/455 , G11B5/5552 , G11B5/5565 , G11B5/596
摘要： The head/disk tester of the invention has a housing 43 that houses spindle 44 that rotatingly supports a magnetic disk 31. The housing supports a moveable carriage 30 that, in turn, supports a magnetic head 32. Positioning means 39 and 41 are used to move the carriage and the magnetic head across the magnetic disk. These positioning means include stepper motors that realize coarse positioning of the magnetic head, and a piezo actuator 37 that is used for fine positioning. Linear encoders 40 and 42 located at both sides of the carriage provide feedback information to a closed-loop positioning system that controls the piezo actuator. A set of special signals ("servo bursts") pre-written at a given track of the magnetic disk is used as an additional source of feedback information for the same closed-loop positioning system. This positioning system includes a servo analyzer 45 that reads and processes servo burst signals from the magnetic disk, and a position controller 49 that controls the piezo actuator. The controller contains two control loops: a proportional-integral-derivative (PID) loop and an additional servo burst loop. During any movement of the magnetic head to a prescribed command position, the servo burst feedback is turned off, and feedback from linear encoders is used by the PID loop to move the head. When the magnetic head reaches the prescribed command position, servo burst loop is turned on; it changes the command position of the PID loop in a way to keep the ratio of pre-written burst signals constant. As a result, the position of the magnetic head with respect to the data track remains the same for as long as necessary, even in unstable temperature conditions.
摘要翻译：本发明的头/盘测试器具有壳体43，其容纳旋转地支撑磁盘31的心轴44.壳体支撑可移动滑架30，滑动架30又支撑磁头32.定位装置39和41用于将滑架和磁头移动到磁盘上。这些定位装置包括实现磁头粗略定位的步进马达和用于精细定位的压电致动器37。位于滑架两侧的线性编码器40和42向控制压电致动器的闭环定位系统提供反馈信息。预先写在磁盘的给定轨道上的一组特殊信号（“伺服脉冲串”）用作相同闭环定位系统的附加反馈信息源。该定位系统包括从磁盘读取和处理伺服脉冲串信号的伺服分析器45以及控制压电致动器的位置控制器49。控制器包含两个控制回路：比例积分微分（PID）回路和附加的伺服脉冲串回路。在任何磁头移动到规定的指令位置时，伺服脉冲串反馈被关闭，PID回路使用线性编码器的反馈来移动磁头。当磁头达到规定的指令位置时，伺服脉冲串环路导通; 它以保持预写脉冲串信号的比例恒定的方式改变PID循环的命令位置。结果，即使在不稳定的温度条件下，磁头相对于数据轨道的位置也保持相同。

5. 发明授权

US07408495B2 Digital equalization of multiple interleaved analog-to-digital converters 有权
标题翻译：多个交错模数转换器的数字均衡
公开(公告)号：US07408495B2
公开(公告)日：2008-08-05
申请号：US11493353
申请日：2006-07-25
申请人： Anatoli Stein , Semen P. Volfbeyn
发明人： Anatoli Stein , Semen P. Volfbeyn
IPC分类号： H03M1/12
CPC分类号： H03M1/0626 , H03M1/0836 , H03M1/1033 , H03M1/1215
摘要： Time variant interleaving equalization of an interleaved analog to digital converter is disclosed. A high-frequency analog input signal is converted into a plurality of individual digital signals using a plurality of interleaved analog-to-digital converters. the plurality of individual digital signals are interleaved into a composite digital signal. The composite digital signal is processed in a time variant interleaving equalizer using a plurality of sets of equalizer coefficients.
摘要翻译：公开了交错模数转换器的时变交织均衡。使用多个交错模数转换器将高频模拟输入信号转换成多个单独的数字信号。多个单独的数字信号被交织成一个复合数字信号。使用多组均衡器系数在时变交错均衡器中处理复合数字信号。

6. 发明授权

US07382304B2 Sampling and measurement of periodic signals 有权
标题翻译：周期信号采样和测量
公开(公告)号：US07382304B2
公开(公告)日：2008-06-03
申请号：US11580523
申请日：2006-10-13
申请人： Anatoli Stein
发明人： Anatoli Stein
IPC分类号： H03M1/12
CPC分类号： G11B20/10009 , G11B5/09 , H03M1/1285
摘要： A periodic signal is sampled. The sampling frequency is less than the Nyquist rate of the periodic signal. A period of the periodic signal is determined. A phase of the periodic signal is tracked to determine a sample's position on the period of the periodic signal. A replica of the periodic signal is reconstructed. A measurement of the periodic signal is determined based on a measurement of the replica of the periodic signal.
摘要翻译：对周期信号进行采样。采样频率小于周期信号的奈奎斯特速率。确定周期信号的周期。跟踪周期信号的相位以在周期信号的周期上确定样本的位置。重建周期信号的复制品。基于周期信号的副本的测量来确定周期信号的测量。

7. 发明申请

US20070262895A1 Digital equalization of multiple interleaved analog-to-digital converters 有权
标题翻译：多个交错模数转换器的数字均衡
公开(公告)号：US20070262895A1
公开(公告)日：2007-11-15
申请号：US11493353
申请日：2006-07-25
申请人： Anatoli Stein , Semen P. Volfbeyn
发明人： Anatoli Stein , Semen P. Volfbeyn
IPC分类号： H03M1/00 , H03M1/12
CPC分类号： H03M1/0626 , H03M1/0836 , H03M1/1033 , H03M1/1215
摘要： Time variant interleaving equalization of an interleaved analog to digital converter is disclosed. A high-frequency analog input signal is converted into a plurality of individual digital signals using a plurality of interleaved analog-to-digital converters. the plurality of individual digital signals are interleaved into a composite digital signal. The composite digital signal is processed in a time variant interleaving equalizer using a plurality of sets of equalizer coefficients.
摘要翻译：公开了交错模数转换器的时变交织均衡。使用多个交错模数转换器将高频模拟输入信号转换成多个单独的数字信号。多个单独的数字信号被交织成一个复合数字信号。使用多组均衡器系数在时变交错均衡器中处理复合数字信号。

8. 发明申请

US20060061496A1 Self-adjusting PRML receiver 有权
标题翻译：自调整PRML接收器
公开(公告)号：US20060061496A1
公开(公告)日：2006-03-23
申请号：US10945393
申请日：2004-09-20
申请人： Anatoli Stein , Semen Volfbeyn
发明人： Anatoli Stein , Semen Volfbeyn
IPC分类号： H03M7/00
CPC分类号： G11B20/10055 , G11B20/10009 , G11B20/10296 , H03M13/6508
摘要： A partial response maximum likelihood (PRML) data detecting in a magnetic recording storage device is carried out with a preliminary measuring of write-read channel responses to all nonzero binary combinations of a given length. Decoding of the user data is performed according to a Viterbi algorithm, where the previously measured responses are used as expected samples for branch metric calculations. The measurement of the write-read channel responses and the decoding of the user data are fulfilled by a self-adjusting PRML receiver that contains a controllable clock recovery, a responses accumulator and an adjustable Viterbi detector. The controllable clock recovery produces a set of read-back signal samples containing exactly one sample per bit with or without phase error correction. The responses accumulator calculates averaged responses of the write-read channel. The adjustable Viterbi detector reconstructs the user data that were written to the disk.
摘要翻译：通过对给定长度的所有非零二进制组合的读取 - 读取通道响应的初步测量来执行磁记录存储设备中的部分响应最大似然（PRML）数据检测。根据维特比算法执行用户数据的解码，其中先前测量的响应用作分支度量计算的预期样本。写入通道响应的测量和用户数据的解码由包含可控时钟恢复的自调节PRML接收器，响应累加器和可调维特比检测器来实现。可控制的时钟恢复产生一组回读信号样本，每个位都包含正或负相位误差校正的每个样本。响应累加器计算写通道的平均响应。可调节维特比检测器重建写入磁盘的用户数据。

9. 发明申请

US20070025004A1 Timing analysis of read back signals in magnetic recording devices 有权
公开(公告)号：US20070025004A1
公开(公告)日：2007-02-01
申请号：US11249042
申请日：2005-10-11
申请人： Anatoli Stein , Semen Volfbeyn , Vladislav Klimov , Igor Tarnikov
发明人： Anatoli Stein , Semen Volfbeyn , Vladislav Klimov , Igor Tarnikov
IPC分类号： G11B27/36
CPC分类号： G11B20/10009 , G11B20/10222 , G11B2220/2516
摘要： Analysis of a read back signal in a magnetic recording device is disclosed. The read back signal is converted to a digital read back signal, and a low frequency component of the digital read back signal is restored. A sample clock is recovered from the restored digital read back signal, and the restored digital read back signal is averaged using the recovered sample clock. A timing error is calculated based at least in part on the averaged restored digital read back signal.

10. 发明申请

US20060273851A1 Method and apparatus for low-frequency bypass in broadband RF circuitry 有权
标题翻译：宽带射频电路中低频旁路的方法和装置
公开(公告)号：US20060273851A1
公开(公告)日：2006-12-07
申请号：US11146766
申请日：2005-06-07
申请人： Anatoli Stein , Mikhail Nikolaev
发明人： Anatoli Stein , Mikhail Nikolaev
IPC分类号： H03F3/45
CPC分类号： H03F3/68 , H03F2200/432
摘要： A method of processing an input broadband signal in RF circuitry includes extracting low-frequency components from the input broadband signal, processing the low-frequency components in low-frequency bypass circuitry, and adding the processed low-frequency components to the output of the RF circuitry to produce a combined output signal. Low-frequency bypass amplifier circuitry for bypassing RF circuitry includes a capacitor having a first terminal for receiving an input signal and a second terminal for connecting to an input of the RF circuitry, and a differential amplifier having two inputs respectively connected to the two terminals of the capacitor, and an output connected to an output of the RF circuitry. High-frequency components of the input signal pass through the capacitor and the RF circuitry, and low-frequency components pass through the differential amplifier and are added to the output of the RF circuitry to produce a combined output signal. The low-frequency bypass circuitry has an amplification which matches with the amplification of the RF circuitry, such that the combined output signal is not distorted from the input signal.
摘要翻译：在RF电路中处理输入宽带信号的方法包括从输入宽带信号中提取低频分量，处理低频旁路电路中的低频分量，以及将处理的低频分量加到RF的输出端产生组合输出信号的电路。用于旁路RF电路的低频旁路放大器电路包括具有用于接收输入信号的第一端子的电容器和用于连接到RF电路的输入的第二端子，以及具有两个输入的差分放大器，该两个输入分别连接到两个端子电容器和连接到RF电路的输出的输出。输入信号的高频分量通过电容器和RF电路，低频分量通过差分放大器并被加到RF电路的输出端以产生组合的输出信号。低频旁路电路具有与RF电路的放大匹配的放大，使得组合的输出信号不与输入信号失真。

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