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    • 12. 发明申请
    • Highspeed serial transmission system and a method for reducing jitter in data transfer on such a system
    • 高速串行传输系统和减少这种系统上的数据传输抖动的方法
    • US20070063880A1
    • 2007-03-22
    • US11384600
    • 2006-03-20
    • Joerg GollerHarald Sandner
    • Joerg GollerHarald Sandner
    • H03M9/00
    • H03K5/1565H04L1/205H04L7/0025H04L25/03343
    • In a high-speed serial transmission system (10) comprising a transmitter (12), a transmission line (14) and a receiver (16), the transmitter (12) includes a bit-stream generator (18) for generating a predetermined pseudo random bit sequence (PRBS), and a controllable phase distortion circuit (20) having an input (24) connected to the bit-stream generator (18) and a signal output (26) connected to the transmission line (14). The receiver (16) includes a sampling circuit (30) with a signal input (36) connected to the transmission line (14), a sampling clock input (38) and a data output (40), a clock recovery circuit (32) with a phase-locked loop circuit (42) and a controllable phase interpolator (44) that has signal inputs (45) connected to signal outputs of the phase-locked loop circuit (42) and an output (48) connected to the sampling clock input (38) of the sampling circuit (30), and a bit-stream verification circuit (32) with an input (50) connected to the data output (40) of the sampling circuit (30) and an output (52) that controls the controllable phase interpolator. An output (54) of the bit-stream verification circuit (34) controls the controllable phase distortion circuit (20) in the transmitter (12) in response to a bit error rate (BER) detected in the bit-stream received form the data output (40) of the sampling circuit (30) by comparison with the predetermined pseudo random bit sequence (PRBS).
    • 在包括发射机(12),传输线(14)和接收机(16)的高速串行传输系统(10)中,发射器(12)包括位流发生器(18),用于产生预定的伪 随机比特序列(PRBS)和具有连接到比特流发生器(18)的输入(24)和连接到传输线(14)的信号输出(26)的可控相位失真电路(20)。 接收器(16)包括具有连接到传输线(14)的信号输入(36),采样时钟输入(38)和数据输出(40),时钟恢复电路(32)的采样电路(30) 具有锁相环电路(42)和可控相位内插器(44),其具有连接到锁相环电路(42)的信号输出的信号输入(45)和连接到采样时钟的输出(48) 采样电路(30)的输入(38)和连接到采样电路(30)的数据输出(40)的输入(50)的位流验证电路(32)和输出(52), 控制可控相位内插器。 比特流验证电路(34)的输出(54)响应于从数据接收的比特流中检测到的比特误码率(BER)来控制发射机(12)中的可控相位失真电路(20) 通过与预定伪随机比特序列(PRBS)进行比较,采样电路(30)的输出(40)。
    • 13. 发明授权
    • All digital phase locked loop system and method
    • 所有数字锁相环系统及方法
    • US07605664B2
    • 2009-10-20
    • US11624149
    • 2007-01-17
    • Harald SandnerHarald Parzhuber
    • Harald SandnerHarald Parzhuber
    • H03L7/085
    • H03L7/08H03L2207/50
    • An all digital PLL system generates an analog oscillator signal at intermediate frequencies to achieve averaged oscillator frequencies at an extremely high frequency resolution. The PLL system includes a digitally controlled oscillator (10) with a digital control input and an analog signal output, and a feedback loop with a digital loop filter (16) for generating a digital control signal for the digitally controlled oscillator (10). The digital loop filter (16) has a first output providing an integer part (nint) of the digital control signal and a second output providing a fractional part (nΣΔ) of the digital control signal. A sigma-delta modulator (14) has an input connected to the second output of the digital loop filter (16) and an output providing a one-bit digital output signal (ΣΔ), and a digital adder (12) has a first input connected to the first output of the digital loop filter (16), a second input connected to the output of the sigma-delta modulator (14), and an output connected to the digital control input of the digitally controlled oscillator (10). The output of the sigma-delta modulator (14) modulates the least significant bits from the first output of the digital loop filter (16).
    • 全数字PLL系统在中频产生模拟振荡器信号,以极高频率分辨率实现平均振荡器频率。 PLL系统包括具有数字控制输入和模拟信号输出的数字控制振荡器(10)和具有数字环路滤波器(16)的反馈回路,用于产生数字控制振荡器(10)的数字控制信号。 数字环路滤波器(16)具有提供数字控制信号的整数部分(nint)的第一输出和提供数字控制信号的小数部分(nSigmaDelta)的第二输出。 Σ-Δ调制器(14)具有连接到数字环路滤波器(16)的第二输出的输入端和提供一比特数字输出信号(SigmaDelta)的输出,数字加法器(12)具有第一输入 连接到数字环路滤波器(16)的第一输出,连接到Σ-Δ调制器(14)的输出端的第二输入端和连接到数字控制振荡器(10)的数字控制输入端的输出端。 Σ-Δ调制器(14)的输出调制来自数字环路滤波器(16)的第一输出的最低有效位。
    • 17. 发明申请
    • Prescaler for a phase-locked loop circuit
    • 预分频器用于锁相环电路
    • US20060071717A1
    • 2006-04-06
    • US11219989
    • 2005-09-06
    • Abdelghani El-KacimiHarald Sandner
    • Abdelghani El-KacimiHarald Sandner
    • H03L7/00
    • H03L7/081H03K21/02H03L7/18
    • A prescaler (10; 110) for use in a phase locked loop circuit, having a signal input (12; 112) receiving a digital input signal (SIG_IN) and a signal output (14; 114) supplying a digital output signal (SIG_OUT). A phase shifter (20; 120) receives an input signal from the signal input (12; 112), and supplies a set of n metasignals (METAk; METAI, METAQ, METAIN, METAQN) each having a relative phase shift of 2π/n with respect to another one of these metasignals. A phase selector (22; 122) has n inputs (34; 134I, 134Q, 134IN, 134QN) to each of which is applied a different one of the metasignals (METAk; METAI, METAQ, METAIN, METAQN) and an output (36; 136) that supplies a selected one of the metasignals. A final frequency divider (26; 126) has an input (70; 170) connected to the output (36; 136) of the phase selector (22; 122) and an output (72; 172) forming the signal output (14; 114) of the prescaler. A control circuit (60; 160) is associated with the phase selector (22; 122) and controls the phase selector so that the output (36; 136) of the phase selector is switched between different metasignals only when these different metasignals are in the same logical state, thereby avoiding the occurrence of glitches that would cause a frequency divider to miscount.
    • 一种用于锁相环电路的预分频器(10; 110),具有接收数字输入信号(SIG_IN)的信号输入端(12; 112)和提供数字输出信号(SIG_OUT)的信号输出端(14; 114) 。 移相器(20; 120)从信号输入端(12; 112)接收输入信号,并提供一组n个元信号(META>; META< I> 相对于这些异信号中的另一个,分别具有2pi / n的相对相移的元件,元件,元件,元件,元件QN。 相位选择器(22; 122)具有n个输入端(34; 134 I,134 Q,134 IN,134 QN),其中每一个输入端分别用不同的一个元信号(META> 和一个输出(36; 136),其输出(36; 136),其提供一个或多个 选择了一种元信号。 最终分频器(26; 126)具有连接到相位选择器(22; 122)的输出端(36; 136)的输入端(70; 170)和形成信号输出端的输出端(72; 172) 114)的预分频器。 控制电路(60; 160)与相位选择器(22; 122)相关联并且控制相位选择器,使得相位选择器的输出(36; 136)只有当这些不同的信号处于 相同的逻辑状态,从而避免发生会导致分频器错误计数的毛刺。
    • 18. 发明授权
    • Table tennis rubber solvent and adhesive systems
    • US5910528A
    • 1999-06-08
    • US826163
    • 1997-03-27
    • Waqidi FalicoffHarald Sandner
    • Waqidi FalicoffHarald Sandner
    • C08J5/12C08J7/00C08K5/10
    • C08J5/122C08J2321/00
    • Solvent systems, and adhesive systems comprising such solvent systems, primarily for use in forming speed-glued table tennis rackets are described. One embodiment of the solvent systems comprises a cycloalkane having from about 3 to about 10 carbon atoms, an ester having from about 2 to about 10 carbon atoms, and a terpene having a molecular weight of from about 110 to about 160. The cycloalkane generally is selected from the group consisting of cyclopentane, cyclohexane, and cycloheptane, with cyclohexane being a currently preferred cycloalkane. A currently preferred ester is ethyl acetate, and a currently preferred terpene is limonene. The solvent system also may comprise an ether, and preferred ethers are dipropylene glycol dimethyl ether and propylene glycol methyl ether acetate. The solvent system also can include an aliphatic alkane having about 10 carbon atoms or fewer, the aliphatic alkane being used in sufficient quantity to adjust the vapor pressure of the solvent system to be from about 50 mm/Hg to about 100 mm/Hg at 25.degree. C. Examples of suitable aliphatic alkanes are heptane, 2,2,4-trimethylpentane and mixtures thereof. The present invention also provides adhesive systems for use in forming speed-glued table tennis rackets. The adhesive system comprises the solvent systems described above, and from about 2 to about 10 weight percent of a solid or solids suitable for speed gluing table tennis rubbers to table tennis blades. A method for speed gluing a table tennis racket also is described. The method generally comprises forming a solvent or adhesive system as discussed above. The solvent or adhesive system is then applied to a table tennis rubber, a table tennis blade, or both. The rubber is then attached to the blade to form a speed-glued table tennis racket. If just a solvent system is used, then the rubber and/or the blade must provide sufficient solid or solids to adhere the rubber to the blade.