Clock recovery apparatus
    31.
    发明申请
    Clock recovery apparatus 审中-公开
    时钟恢复装置

    公开(公告)号:WO2011022869A1

    公开(公告)日:2011-03-03

    申请号:PCT/CN2009/073451

    申请日:2009-08-24

    CPC classification number: H04L7/027 H04B10/614 H04B10/616

    Abstract: The invention relates to a clock recovery apparatus being configured to recover clock information from an input signal. The clock recovery apparatus comprises Fourier transforming means (201) being configured to transform the input signal 5 into a frequency domain signal upon the basis of a Fourier transform, correlating means (215) being configured to correlate the frequency domain signal to obtain a correlation value associated with a certain frequency, and clock recovery means (217) being configured to determine whether the certain frequency corresponds to a clock frequency in order to recover the clock information. 10

    Abstract translation: 本发明涉及一种被配置为从输入信号中恢复时钟信息的时钟恢复装置。 时钟恢复装置包括傅立叶变换装置(201),被配置为基于傅立叶变换将输入信号5变换为频域信号,相关装置(215)被配置为使频域信号相关以获得相关值 与时钟信号相关联的时钟恢复装置(217)被配置为确定某个频率是否对应于时钟频率以恢复时钟信息。 10

    信号伝達システム及び信号伝達方法
    32.
    发明申请
    信号伝達システム及び信号伝達方法 审中-公开
    信号传输系统和信号传输方法

    公开(公告)号:WO2010089974A1

    公开(公告)日:2010-08-12

    申请号:PCT/JP2010/000464

    申请日:2010-01-27

    Inventor: 帰山隼一

    Abstract:  本発明にかかる信号伝達システムは、第1のクロック信号(CLKi)に応じて第1のパラレルデータを第1のシリアルデータ(Ds)に変換する第1のデータ変換回路(10)と、第1のシリアルデータ(Ds)に第1のクロック信号(CLKi)を多重化した送信信号(Dsm)を送信ノードに出力するクロック多重化回路(11)と、受信ノードを介して受信される受信信号(Drm)から第1のシリアルデータに対応する第2のシリアルデータ(Ds)と第1のクロック信号(CLKi)に対応する第2のクロック信号(CLKs)を抽出するクロックデータリカバリ回路(14)と、第2のクロック信号(CLKs)に応じて第2のシリアルデータ(Ds)を第2のパラレルデータに変換する第2のデータ変換回路(15)と、を有する。これにより、チップ面積を小さくすることができる。

    Abstract translation: 信号传输系统具有根据第一时钟信号(CLKi)将第一并行数据转换为第一串行数据(Ds)的第一数据转换电路(10); 输出与第一串行数据(Ds)复用的第一时钟信号(CLKi)的发送信号(Dsm)到发送节点的时钟多路复用电路(11) 时钟数据恢复电路(14)从接收到的接收信号(Drm)中提取与第一串行数据相对应的第二串行数据(Ds)和对应于第一时钟信号(CLKi)的第二时钟信号(CLKs) 节点; 以及根据第二时钟信号(CLK)将第二串行数据(Ds)转换为第二并行数据的第二数据转换电路(15)。 结果,可以减小芯片面积。

    TAKTRÜCKGEWINNUNGSEINRICHTUNG UND VERFAHREN ZUM TAKTRÜCKGEWINNEN
    34.
    发明申请
    TAKTRÜCKGEWINNUNGSEINRICHTUNG UND VERFAHREN ZUM TAKTRÜCKGEWINNEN 审中-公开
    中风康复设备和方法CLOCK RECOVER

    公开(公告)号:WO2007137538A1

    公开(公告)日:2007-12-06

    申请号:PCT/DE2006/000971

    申请日:2006-05-31

    CPC classification number: H03L7/00 H04L7/027 H04L7/0276

    Abstract: Die Erfindung bezieht sich u. a. auf eine Taktrückgewinnungseinrichtung (10) mit einem digitalen Datensignaleingang (ElO) zum Einspeisen eines digitalen Datensignals (DATA) und einem Taktausgang (TlO) zur Ausgabe eines rückgewonnenen Taktsignals (QO), wobei das digitale Datensignal eine vorgegebene nominale Taktfrequenz (fn) aufweist. Erfindungsgemäß ist vorgesehen, dass die Taktrückgewinnungseinrichtung durch eine digitale Schaltung gebildet ist.

    Abstract translation: 本发明涉及Ú。 一。 时钟恢复装置(10)配有一个数字数据信号,用于输入数字数据信号(DATA)和用于输出恢复的时钟信号(QO),具有预定的额定频率(FN)的数字数据信号的时钟输出(TIO)输入(ELO)。 根据本发明,它提供了时钟恢复装置由数字电路构成。

    OPTICAL CLOCK RECOVERY
    35.
    发明申请
    OPTICAL CLOCK RECOVERY 审中-公开
    光学时钟恢复

    公开(公告)号:WO2007028862A1

    公开(公告)日:2007-03-15

    申请号:PCT/FI2006/050380

    申请日:2006-09-06

    CPC classification number: H04L7/0075

    Abstract: The invention relates to clock recovery in optical communication systems. Optical clock frequencies are recovered from a plurality of optical channels by using a single optical resonator. The optical resonator is matched with the carrier frequencies (V O , A , V O , B ) and the sideband frequencies (V- 1.A’ V 1.A’ V -1. B’ V 1 . B ) of the data signals (S ΙN . A’ S ΙN . B ) sent at different channels. The separation range of the optical resonator (Δv SR ) is selected such that the clock frequency (V 01 ) of at least one data signal (S IN.A ) is substantially equal to the separation range of the optical resonator (Δv SR ) multiplied by an integer greater than or equal to two. The method according to the invention allows the use of different clock frequencies at different optical channels. Furthermore, the method provides considerable freedom to select the spectral positions of the optical channels.

    Abstract translation: 本发明涉及光通信系统中的时钟恢复。 通过使用单个光谐振器从多个光通道恢复光时钟频率。 光谐振器与载波频率(V O,O,A,V,O,B B)和 边带频率(V-1A')V 1.A'

    WIRELESS COMMUNICATIONS DEVICES, METHODS OF PROCESSING A WIRELESS COMMUNICATION SIGNAL, WIRELESS COMMUNICATION SYNCHRONIZATION METHODS AND A RADIO FREQUENCY IDENTIFICATION DEVICE COMMUNICATION METHOD
    36.
    发明申请
    WIRELESS COMMUNICATIONS DEVICES, METHODS OF PROCESSING A WIRELESS COMMUNICATION SIGNAL, WIRELESS COMMUNICATION SYNCHRONIZATION METHODS AND A RADIO FREQUENCY IDENTIFICATION DEVICE COMMUNICATION METHOD 审中-公开
    无线通信设备,无线通信信号的处理方法,无线通信同步方法和无线电频率识别设备通信方法

    公开(公告)号:WO2004032408A1

    公开(公告)日:2004-04-15

    申请号:PCT/US2003/030209

    申请日:2003-09-23

    Abstract: Wireless communications devices, methods of processing a wireless communication signal, wireless communication synchronization methods and a radio frequency identification device communication method are described. In one aspect, a wireless communication device includes an antenna configured to receive electromagnetic energy corresponding to a wireless communication signal outputted using an interrogator and to output electrical energy corresponding to the received electromagnetic energy, communication circuitry coupled with the antenna and configured to sample the electrical energy to process the wireless communication signal, synchronization circuitry coupled with the antenna and the communication circuitry and configured to generate a clock signal to control sampling of the electrical energy using the communication circuitry, wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal responsive to a plurality of transitions of the electrical energy during a first data period and wherein the synchronization circuitry is configured to generate a plurality of transitions within the clock signal during a second data period including generating at least one of the transitions independent of transitions of the electrical energy.

    Abstract translation: 无线通信设备,处理无线通信信号的方法,无线通信同步方法和射频识别设备通信方法。 一方面,一种无线通信设备包括:天线,被配置为接收与使用询问器输出的无线通信信号相对应的电磁能量,并输出与所接收的电磁能对应的电能,与天线耦合的通信电路, 处理无线通信信号的能量,与天线和通信电路耦合的同步电路,并被配置为产生时钟信号,以使用通信电路来控制电能的采样,其中同步电路被配置为在 所述时钟信号在第一数据周期期间响应于所述电能的多个转换,并且其中所述同步电路被配置为在所述时钟信号期间在包括总线的第二数据周期期间产生所述时钟信号内的多个转换 g独立于电能的跃迁的至少一个转换。

    METHOD AND APPARATUS FOR CARRIER PHASE TRACKING
    37.
    发明申请
    METHOD AND APPARATUS FOR CARRIER PHASE TRACKING 审中-公开
    用于载波相位跟踪的方法和装置

    公开(公告)号:WO0120863A9

    公开(公告)日:2002-11-21

    申请号:PCT/US0025257

    申请日:2000-09-14

    Abstract: A method and telecommunication system for tracking the carrier phase of a received signal (2, 4) includes the addition of a pilot signal (7) to the data component of the signal prior to modulation and transmission (100). The pilot signal (230) is to have a frequency equal to the inverse of twice a data symbol interval with zero crossings positioned at the midpoint of each symbol interval to avoid interference with the data. The received signal (230) is demodulated to produce a complex data signal from which the pilot signal is detected to provide an estimate of the phase error in the complex data signal (230). The elimination of the phase error from the complex data signal is accomplished through a corrective phase shift (240) that is equal and opposite to the estimated phase error.

    Abstract translation: 用于跟踪接收信号(2,4)的载波相位的方法和电信系统包括在调制和传输(100)之前向信号的数据分量添加导频信号(7)。 导频信号(230)具有等于数据符号间隔的两倍的频率,其中零交叉位于每个符号间隔的中点,以避免与数据的干扰。 接收信号(230)被解调以产生复数数据信号,从该数据信号检测导频信号以提供复数数据信号(230)中的相位误差的估计。 通过与估计的相位误差相等且相反的校正相移(240)来实现从复数据信号中消除相位误差。

    TIMING DRIFT COMPENSATION IN WIRELESS PACKET-BASED SYSTEMS
    38.
    发明申请
    TIMING DRIFT COMPENSATION IN WIRELESS PACKET-BASED SYSTEMS 审中-公开
    基于无线数据包系统的时间补偿补偿

    公开(公告)号:WO02045333A1

    公开(公告)日:2002-06-06

    申请号:PCT/SE2001/002643

    申请日:2001-11-29

    Abstract: A radio receiver system (30) comprises a radio receiver (41), a receiver sample clock (60), which is used for sampling a modulated base-band signal; and a timing correction unit (100). The timing correction unit (100) performs, in the frequency domain, a timing drift compensation between a transmitter sample clock (66) and the receiver sample clock (60), In one example context of implementation, the plural modulated radio frequency carriers have been modulated using Orthogonal Frequency Division Multiplexing (OFDM).

    Abstract translation: 无线电接收机系统(30)包括无线电接收机(41),接收机采样时钟(60),用于对已调制的基带信号进行采样; 和定时校正单元(100)。 定时校正单元(100)在频域中执行发射机采样时钟(66)和接收机采样时钟(60)之间的定时漂移补偿。在一个实施例的上下文中,多个调制的射频载波已被 使用正交频分复用(OFDM)进行调制。

    CARRIER ACQUISITION USING BANDEDGE SPECTRAL PROPERTIES
    39.
    发明申请
    CARRIER ACQUISITION USING BANDEDGE SPECTRAL PROPERTIES 审中-公开
    使用带状光谱特性的载波采集

    公开(公告)号:WO0172000A3

    公开(公告)日:2002-03-14

    申请号:PCT/US0108536

    申请日:2001-03-16

    CPC classification number: H04L27/144 H04L7/027

    Abstract: Carrier wave frequency is quickly acquired without burdensome MIPs requirements by limiting the spectral analysis of the incoming channel to the expected band edges. The right and left band edges spectral energy is compared and clock frequency correction is made from the results of this comparison. A band pass filter, such as a Goertzel algorithm filter, is employed to quickly and with processing efficiency perform the spectral analysis at the band edges. Once the direction of the frequency error is derived, the correct frequency can be acquired through a feedback loop employing various iterative correction techniques, such as a gearshift approach in which certain predefined frequency corrections are imposed in decreasing steps until the desired carrier frequency has been acquired.

    Abstract translation: 通过将输入信道的频谱分析限制到预期频带边缘,快速获取载波频率而不需要繁重的MIP要求。 比较右侧和左侧边缘的光谱能量,并根据该比较结果对时钟频率进行校正。 使用诸如Goertzel算法滤波器的带通滤波器来快速地进行处理,并且在频带边缘进行频谱分析。 一旦导出了频率误差的方向,就可以通过采用各种迭代校正技术的反馈回路获得正确的频率,例如换档方法,其中以递减步骤施加某些预定义的频率校正,直到已经获得期望的载波频率 。

    FLEXIBLE BIT RATE CLOCK RECOVERY UNIT
    40.
    发明申请
    FLEXIBLE BIT RATE CLOCK RECOVERY UNIT 审中-公开
    灵活位速率时钟恢复单元

    公开(公告)号:WO01037431A1

    公开(公告)日:2001-05-25

    申请号:PCT/US2000/027908

    申请日:2000-10-10

    CPC classification number: H03L7/07 H04L7/027 H04L7/0337

    Abstract: A flexible bit rate clock recovery unit (30) is provided for recovering a clock signal from an input data signal, where the input data signal is transmissible at different bit rates. The flexible bit rate clock recovery unit includes a plurality of fixed rate clock recovery units (32), where each fixed rate clock recovery units is operative at a different rate to extract an intermediary clock signal from the input data signal; a comparator (34) for generating an encoded data signal based on an amplitude characteristic of each of the intermediary clock signals, where the encoded data signal is indicative of the clock signal associated with the input data signal; and a selector (36) for selecting one of the intermediary clock signals based on the encoded data signal, thereby recovering the clock signal from the input data signal.

    Abstract translation: 提供灵活的比特率时钟恢复单元(30),用于从输入数据信号中恢复时钟信号,其中输入数据信号以不同的比特率传输。 灵活比特率时钟恢复单元包括多个固定速率时钟恢复单元(32),其中每个固定速率时钟恢复单元以不同的速率工作以从输入数据信号提取中间时钟信号; 比较器(34),用于基于每个中间时钟信号的幅度特性来生成编码数据信号,其中编码数据信号表示与输入数据信号相关联的时钟信号; 以及用于基于编码数据信号选择一个中间时钟信号的选择器(36),从而从输入数据信号中恢复时钟信号。

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