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1. 发明授权

US06724849B1 Method and apparatus for timing recovery in ADSL transceivers under a TCM-ISDN crosstalk environment 有权
标题翻译：在TCM-ISDN串扰环境下ADSL收发器的定时恢复方法和装置
公开(公告)号：US06724849B1
公开(公告)日：2004-04-20
申请号：US09515415
申请日：2000-02-29
申请人： Guozhu Long , Chin N Hung , Yaron Bar-Ness
发明人： Guozhu Long , Chin N Hung , Yaron Bar-Ness
IPC分类号： H04L2500
CPC分类号： H04L5/1492 , H04L27/2662 , H04L27/2679
摘要： A system used to synchronize the clock frequency of a receiver with that of a transmitter, where both the receiver and transmitter communicate using the ADSL Annex C standard. The transmitter continuously transmits pilot tones to the receiver. The receiver determines the phase error between sequential pilot tone symbols to determine a phase error. The receiver uses the phase error to adjust the receiver clock frequency. However, if the most recently received symbol is subject to near end cross talk or is subject to far end cross talk and is a boundary symbol, the receiver ignores the phase error and does not adjust the receiver clock frequency.
摘要翻译：用于使接收机的时钟频率与发射机的时钟频率同步的系统，其中接收机和发射机都使用ADSL附件C标准进行通信。发射机连续向接收机发送导频音。接收机确定顺序导频音符号之间的相位误差，以确定相位误差。接收机使用相位误差来调整接收机时钟频率。然而，如果最近接收的符号经受近端串扰或受到远端串扰，并且是边界符号，则接收机忽略相位误差，并且不调整接收机时钟频率。

2. 发明授权

US06658073B1 Method and system for reducing jitter on constant rate data transfer between asynchronous systems 有权
标题翻译：用于减少异步系统间恒定速率数据传输抖动的方法和系统
公开(公告)号：US06658073B1
公开(公告)日：2003-12-02
申请号：US09454795
申请日：1999-12-03
申请人： Norbert Grunert
发明人： Norbert Grunert
IPC分类号： H04L2500
CPC分类号： H04L1/205 , H04L7/0012 , H04L7/02
摘要： A method and system for reducing data loss in digital communication between asynchronous digital devices. The method includes generating a first data transmission stream using a transmitter device, the first data stream synchronous to a first clock signal. A second data transmission stream is then generated using the transmitter device, wherein the second data transmission stream is a copy of the first data stream with a phase shift. A determination is then made as to whether the phase of the first clock signal is within a predetermined amount of the phase of a receiver clock signal of a receiver device, wherein the receiver clock signal is used by the receiver device to sample received data. The first data stream is transmitted to the receiver device when the phase of the first clock signal differs from the phase of the second clock signal by greater than the predetermined amount. The second data stream is transmitted to the receiver device when the phase of the first clock signal differs from the phase of the receiver clock signal by less than the predetermined amount such that jitter on the first clock signal and the receiver clock signal does not disrupt communication between the transmitter device and the receiver device.
摘要翻译：一种用于减少异步数字设备之间数字通信中的数据丢失的方法和系统。该方法包括使用发射机设备产生与第一时钟信号同步的第一数据流的第一数据传输流。然后使用发射机设备生成第二数据传输流，其中第二数据传输流是具有相移的第一数据流的副本。然后确定第一时钟信号的相位是否在接收机设备的接收机时钟信号的相位的预定量内，其中接收机设备使用接收机时钟信号来采样接收到的数据。当第一时钟信号的相位与第二时钟信号的相位不同于预定量时，第一数据流被发送到接收机设备。当第一时钟信号的相位与接收机时钟信号的相位不同于预定量时，第二数据流被发送到接收机设备，使得第一时钟信号和接收机时钟信号上的抖动不会中断通信在发射机设备和接收机设备之间。

3. 发明授权

US06628738B1 Method of arrangement to determine a clock timing error in a multi-carrier transmission system, and a related synchronization units 有权
标题翻译：确定多载波传输系统中的时钟定时误差的方法和装置，以及相关的同步单元
公开(公告)号：US06628738B1
公开(公告)日：2003-09-30
申请号：US09158596
申请日：1998-09-22
申请人： Miguel Peeters , Thierry Pollet
发明人： Miguel Peeters , Thierry Pollet
IPC分类号： H04L2500
CPC分类号： H04L27/2662 , H04L27/2657 , H04L27/2675
摘要： In a multi-carrier transmission system, a clock timing error (&tgr;e) is calculated at the receiver's side and used for synchronization between a transmitting modem and a receiving modem (RX1). The clock timing error (&tgr;e) is calculated from phase errors (&phgr;0, &phgr;1, . . . , &phgr;i, . . . , &phgr;N-1) detected for a plurality of pilot carriers during a tracking mode in such a way that the share (Ai) of a phase error (&phgr;i) detected for a particular pilot carrier in the clock timing error (&tgr;e) depends on the transmission quality (SNRi) of that pilot carrier over the transmission medium in between the two modems. In this way, the robustness of the synchronization for narrowband noise near a pilot carrier is improved significantly.
摘要翻译：在多载波传输系统中，在接收机侧计算时钟定时误差（taue），并用于发射调制解调器和接收调制解调器（RX1）之间的同步。在跟踪模式期间，针对多个导频载波检测的相位误差（phi0，phi1，...，phii，...，phiN-1）计算时钟定时误差（taue），使得共享在时钟定时误差（taue）中针对特定导频载波检测的相位误差（phii）的Ai取决于在两个调制解调器之间的传输介质上的导频载波的传输质量（SNRi）。以这种方式，导频载波附近的窄带噪声的同步的鲁棒性显着提高。

4. 发明授权

US06542564B2 Method and apparatus for compensating reproduced audio signals of an optical disc 有权
公开(公告)号：US06542564B2
公开(公告)日：2003-04-01
申请号：US10055948
申请日：2002-01-28
申请人： Jae Ryong Cho
发明人： Jae Ryong Cho
IPC分类号： H04L2500
CPC分类号： G11B20/10527 , G11B2020/1062 , G11B2020/1074 , G11B2020/10759 , G11B2220/2562 , H04N5/85 , H04N9/8063 , H04N21/4392
摘要： An apparatus and method for compensating audio signals to be recorded on an optical disc to optimize usage of memory in an audio decoding circuit, and to neutralize invalid audio data to produce good audio quality. A determination is made with regard to whether audio data signals contain normal data or invalid data. Invalid data is adjusted into normal audio data, and stored in the memory. The volume of the data stored in the memory is monitored to detect overflow and underflow conditions of the memory, a data transmitting stopping signal being sent during an overflow condition of the memory, a data transmitting requesting signal being sent during an underflow condition. The audio data reproduced from the memory is decoded, and the decoded audio data is output. Undesired errors are prevented by monitoring the reproduced audio data for invalid data and by adjusting invalid data into normal data when detected.

5. 发明授权

US06408020B1 Dual-mode radio communication device having function for selectively using analog or digital mode 有权
标题翻译：具有用于选择性地使用模拟或数字模式的功能的双模无线电通信设备
公开(公告)号：US06408020B1
公开(公告)日：2002-06-18
申请号：US09380517
申请日：1999-09-03
申请人： Naoki Kaji , Osamu Kurokawa , Akira Ishikura , Yoshihiro Nomura , Masakuni Hyodo , Ken Nakamura , Yoshimasa Takahashi
发明人： Naoki Kaji , Osamu Kurokawa , Akira Ishikura , Yoshihiro Nomura , Masakuni Hyodo , Ken Nakamura , Yoshimasa Takahashi
IPC分类号： H04L2500
CPC分类号： H04W88/06 , G01R19/16542 , G01R31/3648 , H04B1/406 , H04W52/0261 , Y02D70/40
摘要： According to the present invention, an analog-mode discharge characteristic storage area (21a) and a digital-mode discharge characteristic storage area (21b) store threshold data of remaining battery display in an incoming-call standby status in an analog mode and that in a digital mode, respectively. A remaining battery determination means (20a) determines a remaining battery level corresponding to a selected communication mode based on both a voltage of detected by a voltage detection circuit (32) and data stored in the analog-mode discharge characteristic storage area (21a) or the digital-mode discharge characteristic storage area (21b). A remaining battery display control means (20b) causes the remaining battery to be displayed on an LCD display of a control unit (22) in accordance with a determination result of the remaining battery determination means (20a).
摘要翻译：根据本发明，模拟放电特性存储区域（21a）和数字模式放电特性存储区域（21b）以模拟模式存储来电待机状态下的剩余电池显示的阈值数据，分别是数字模式。剩余电池确定装置（20a）基于由电压检测电路（32）检测的电压和存储在模拟模式放电特性存储区域（21a）中的数据两者来确定与所选择的通信模式相对应的剩余电池电量，或数字模式放电特性存储区域（21b）。剩余电池显示控制装置（20b）根据剩余电池确定装置（20a）的确定结果使剩余电池显示在控制单元（22）的LCD显示器上。

6. 发明授权

US06263036B1 Asynchronous signal input apparatus and sampling frequency conversion apparatus 失效
标题翻译：异步信号输入装置和采样变频装置
公开(公告)号：US06263036B1
公开(公告)日：2001-07-17
申请号：US09124752
申请日：1998-07-29
申请人： Yusuke Yamamoto , Ichiro Futohashi , Yasuyuki Muraki
发明人： Yusuke Yamamoto , Ichiro Futohashi , Yasuyuki Muraki
IPC分类号： H04L2500
CPC分类号： G06F5/14 , G06F2205/061 , H03H17/0628
摘要： An asynchronous signal input apparatus includes a memory device which writes data that are input at a predetermined frequency, in response to a write signal, and reads data in response to a read signal. A data quantity measuring device measures a data quantity representing a quantity of data stored in the memory device. A read signal generating device generates the read signal at a frequency that varies depending upon the measured data quantity. A sampling frequency conversion apparatus comprises the memory device, data quantity measuring device, and read signal generating device employed in the asynchronous signal input apparatus. Further, the read signal generating device includes a converter which performs non-linear conversion on the data quantity measured by the data quantity measuring device. An interpolation information producing device produces interpolation information to be used for data generated from the memory device, based on the data quantity to which the non-linear gain is given by the converter. An interpolation device interpolates data that are read from the memory device in response to the read signal, based on the produced interpolation information.
摘要翻译：异步信号输入装置包括响应于写信号写入以预定频率输入的数据的存储装置，并响应于读信号读取数据。数据量测量装置测量表示存储在存储装置中的数据量的数据量。读取信号产生装置以取决于测量数据量而变化的频率产生读取信号。采样频率转换装置包括在异步信号输入装置中采用的存储装置，数据量测量装置和读信号产生装置。此外，读信号生成装置包括对由数据量测量装置测量的数据量执行非线性转换的转换器。内插信息产生装置基于由转换器给出非线性增益的数据量，产生用于从存储装置生成的数据的内插信息。内插装置根据所生成的插值信息，内插根据读取信号从存储装置读出的数据。

7. 发明授权

US06173024B2 Bit stream reproducing apparatus 失效
标题翻译：比特流再现装置
公开(公告)号：US06173024B2
公开(公告)日：2001-01-09
申请号：US09070731
申请日：1998-05-01
申请人： Takahiro Nanba , Masashi Kuroda , Makoto Kumano
发明人： Takahiro Nanba , Masashi Kuroda , Makoto Kumano
IPC分类号： H04L2500
CPC分类号： H04L1/0061 , G10L19/005 , H04J3/0605
摘要： The bit stream reproducing apparatus is comprised of a frame length counter for measuring a data length of one frame; a first calculator for calculating a data length “L1” defined from a header to a scale factor; a second calculator for calculating a data length “L2” of an audio sample; and a third calculator for executing a calculation of E=F−(L1+L2×12) based upon calculation results of the first calculator and of the second calculator, and for sending out a control signal to a muting circuit so as to instruct a muting operation in the case of E
摘要翻译：比特流再现装置包括用于测量一帧的数据长度的帧长度计数器; 用于计算从标题到比例因子定义的数据长度“L1”的第一计算器; 用于计算音频样本的数据长度“L2”的第二计算器; 以及第三计算器，用于基于第一计算器和第二计算器的计算结果执行E = F-（L1 + L2×12）的计算，并且向控制信号发送控制信号以指示静音操作在E <0的情况下。

8. 发明授权

US06816554B1 Communication bus for low voltage swing data signals 失效
标题翻译：通讯总线用于低电压摆幅数据信号
公开(公告)号：US06816554B1
公开(公告)日：2004-11-09
申请号：US09351367
申请日：1999-07-12
申请人： Kevin X. Zhang
发明人： Kevin X. Zhang
IPC分类号： H04L2500
CPC分类号： H04L25/0272 , H03K3/356139 , H03K3/356191 , H04L25/028
摘要： In an integrated circuit, a low voltage swing logic communication bus has N+2 data wires for N data signals. Each of the N data signals is carried on its own wire. The communication bus includes two other reference signals.
摘要翻译：在集成电路中，低电压摆动逻辑通信总线具有用于N个数据信号的N + 2个数据线。 N个数据信号中的每一个在其自身的电线上承载。通信总线包括两个其他参考信号。

9. 发明授权

US06754296B2 Apparatus and method for generating a reference frequency 失效
标题翻译：用于产生参考频率的装置和方法
公开(公告)号：US06754296B2
公开(公告)日：2004-06-22
申请号：US09924693
申请日：2001-08-08
申请人： Detlef Schulz , Gerhard Bethscheider , Peter Siebert
发明人： Detlef Schulz , Gerhard Bethscheider , Peter Siebert
IPC分类号： H04L2500
CPC分类号： H04B7/185
摘要： The invention refers to an apparatus for generating a reference frequency depending on a timing information extracted from a data stream. In order to generate a carrier frequency in a user station of a satellite TDMA network at low costs which is accurate and stable and which meets stringent phase noise requirements, it is suggested to use at least one free-running oscillator. The frequency deviation with regard to the timing information extracted from the data stream is estimated by an estimation means. At least two oscillation signals are derived from the at least one oscillation means and are linked together by a linking means yielding said reference frequency. A frequency correction value is applied to at least one of the oscillation signals such that the timing information given by the reference frequency corresponds to the timing information extracted from said data stream.
摘要翻译：本发明涉及一种根据从数据流提取的定时信息产生参考频率的装置。为了在卫星TDMA网络的用户站中以低成本生成准确和稳定的并且满足严格的相位噪声要求的载波频率，建议使用至少一个自由运行的振荡器。通过估计装置估计关于从数据流提取的定时信息的频率偏差。至少两个振荡信号从至少一个振荡装置导出，并通过产生所述参考频率的连接装置连接在一起。将频率校正值应用于至少一个振荡信号，使得由参考频率给出的定时信息对应于从所述数据流中提取的定时信息。

10. 发明授权

US06654424B1 Method and device for tuning a first oscillator with a second oscillator and rotation rate sensor 有权
标题翻译：用于利用第二振荡器和转速传感器调谐第一振荡器的方法和装置
公开(公告)号：US06654424B1
公开(公告)日：2003-11-25
申请号：US09520250
申请日：2000-03-07
申请人： Andreas Thomae , Johannes Artzner , Reinhard Neul , Georg Bischopink , Karsten Funk , Markus Lutz
发明人： Andreas Thomae , Johannes Artzner , Reinhard Neul , Georg Bischopink , Karsten Funk , Markus Lutz
IPC分类号： H04L2500
CPC分类号： H03J7/02 , G01C19/56
摘要： In the method and device for tuning a first oscillator with a second oscillator respective response signals of the first oscillator are produced from corresponding frequency-shifted and/or phase-shifted signals of the second oscillator. The first oscillator is tuned to the second oscillator according to the difference of the respective response signals. For amplitude correction a quotient is formed by dividing an output signal by the sum of the response signals. The method and device according to the invention are especially useful in a rotation rate sensor. The invention also includes a rotation rate sensor, which includes a device for determining rotation rate from the oscillations of a first and second oscillator and the device for tuning the first oscillator with the second oscillator.
摘要翻译：在用第二振荡器调谐第一振荡器的方法和装置中，由第二振荡器的相应频移和/或相移信号产生第一振荡器的响应信号。根据各个响应信号的差异，第一振荡器被调谐到第二振荡器。对于幅度校正，通过将输出信号除以响应信号的和来形成商。根据本发明的方法和装置在旋转速率传感器中特别有用。本发明还包括旋转速率传感器，其包括用于从第一和第二振荡器的振荡确定转速的装置和用于利用第二振荡器调谐第一振荡器的装置。

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