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1. 发明授权

EP3556018B1 DIFFERENTIAL PLL WITH CHARGE PUMP CHOPPING 有权
公开(公告)号：EP3556018B1
公开(公告)日：2021-03-03
申请号：EP17887418.6
申请日：2017-12-04
发明人： PETROV, Dmitry
IPC分类号： H03L7/089 , H02M3/07 , H04B14/06 , H04L25/02 , H04L25/08 , H04L27/00

2. 发明公开

EP3103198A4 TRANSMITTER AND METHOD OF TRANSMITTING 有权
标题翻译： SENDER UND SENDEVERFAHREN
公开(公告)号：EP3103198A4
公开(公告)日：2017-07-19
申请号：EP14881998
申请日：2014-09-30
申请人： TEXAS INSTRUMENTS INC
发明人： HEZAR RAHMI , DING LEI , HAROUN BAHER
IPC分类号： H03F1/02 , H03F3/19 , H03F3/217 , H03F3/24 , H04B14/06 , H04L27/20
CPC分类号： H04L27/3411 , H03F1/02 , H03F1/0294 , H03F3/19 , H03F3/2175 , H03F3/245 , H03F2200/331 , H03F2200/336 , H03F2200/451 , H04B1/02 , H04B14/062 , H04L27/2053
摘要： At least one tone is generated. An output signal is generated in response to an input signal and the at least one tone. The output signal is modulated. The input signal and the at least one tone are represented in the modulated output signal. The at least one tone is outside a bandwidth of the input signal as represented in the modulated output signal. The modulated output signal is amplified. The at least one tone in the amplified signal is attenuated after the amplifying.
摘要翻译：至少生成一种音调。输出信号响应于输入信号和至少一个音调而生成。输出信号被调制。输入信号和至少一个音调在调制输出信号中表示。至少一个音调在调制输出信号中表示的输入信号的带宽之外。调制的输出信号被放大。放大后的信号中的至少一个音调被衰减。

3. 发明公开

EP2200195A2 Information coding apparatus 审中-公开
标题翻译：信息编码设备
公开(公告)号：EP2200195A2
公开(公告)日：2010-06-23
申请号：EP09252724.1
申请日：2009-12-03
申请人： Sony Corporation
发明人： Toguri, Yasuhiro , Matsumoto, Jun
IPC分类号： H04B14/06 , H03M7/00
CPC分类号： H04B14/068 , H03M7/3046
摘要： An information coding apparatus includes a predictive signal generator that generates a predictive signal; a predictive residual signal generator that generates a predictive residual signal; a quantizer that quantizes a quantization input signal generated based on the predictive residual signal; a quantization error signal generator that generates a quantization error signal; a feedback signal generator that generates a feedback signal for controlling the frequency characteristic of the quantization noise after decoding based on the quantization error signal; and a quantization input signal generator that generates the quantization input signal. The feedback signal generator is configured by a pole-zero filter that includes a filter coefficient of an all-pole filter which is based on spectral envelope information estimated by the input audio signal, a parameter for adjusting a peak level in the frequency characteristic of the quantization noise caused by the all-pole filter, and the predictive filter coefficient.
摘要翻译：信息编码装置包括：预测信号生成器，生成预测信号; 预测残差信号生成器，其生成预测残差信号; 量化器，量化基于预测残差信号生成的量化输入信号; 量化误差信号生成器，其生成量化误差信号; 反馈信号生成器，基于量化误差信号生成用于控制解码之后的量化噪声的频率特性的反馈信号; 以及生成量化输入信号的量化输入信号生成器。反馈信号产生器由极点 - 零点滤波器构成，该极点 - 零点滤波器包括基于由输入音频信号估计的频谱包络信息的全极点滤波器的滤波器系数，用于调整该频率特性中的峰值电平的参数由全极点滤波器引起的量化噪声以及预测滤波器系数。

4. 发明公开

EP1911158A1 CANCELLATION OF ANTI-RESONANCE IN RESONATORS 审中-公开
标题翻译：防共振的撤离RESONATORS
公开(公告)号：EP1911158A1
公开(公告)日：2008-04-16
申请号：EP05766729.7
申请日：2005-07-20
申请人： The National University of Singapore
发明人： YU, Rui , XU, Yong Ping Signal Processing & VLSI Desing Lab.
IPC分类号： H03H9/64 , H03H9/46 , H03M3/02 , H04B14/06
CPC分类号： H03H9/46 , H03M3/322 , H03M3/404 , H03M3/458 , H04B14/06
摘要： Briefly, in accordance with one embodiment of the invention, a resonator (110) such as an electromechanical resonator may be coupled with a cancellation network (112) to reduce and/or cancel an anti-resonance effect in the resonator (110), which may be due to, for example, a static capacitance (210) inherent in the resonator. Cancellation of an anti resonance effect from the resonator response may allow a resonance effect of the resonator (110) to be a predominant effect to allow the resonator (110) to be utilized as a bandpass filter having a relatively higher Q, for example in a bandpass sigma-delta modulator (526) that may be utilized in a digital RF receiver (800).

5. 发明授权

EP0994569B1 Audio signal processing apparatus 有权
公开(公告)号：EP0994569B1
公开(公告)日：2006-12-06
申请号：EP99118960.6
申请日：1999-09-27
申请人： VICTOR COMPANY OF JAPAN, LTD.
发明人： Fuchigami, Norihiko , Ueno, Shoji , Tanaka, Yoshiaki
IPC分类号： H04B1/66 , H04B14/06
CPC分类号： G10L19/008 , G10L19/04 , H04B1/66 , H04S1/007
摘要： In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals.

6. 发明授权

EP0998795B1 METHOD AND APPARATUS FOR PERFORMANCE IMPROVEMENT BY QUALIFYING PULSES IN AN OVERSAMPLED, NOISE-SHAPING SIGNAL PROCESSOR 失效
标题翻译：提高性能的凭资质IN A脉冲的方法和装置的过采样噪声整形信号处理器
公开(公告)号：EP0998795B1
公开(公告)日：2006-02-22
申请号：EP98937027.5
申请日：1998-07-20
申请人： Tripath Technology, Inc.
发明人： TRIPATHI, Adya, S. , DELANO, Cary, L.
IPC分类号： H04B14/06
CPC分类号： H04B14/06 , H03M3/376 , H03M3/43 , H03M3/454
摘要： An oversampled, noise shaping signal processor (300) is described having at least one integrator stage (306) in the loop. A sampling stage (310) is connected coupled to the at least one integrator stage. The sampling stage samples an analog signal at a sample frequency. Qualification logic (318) coupled to the sampling stage receives a pulse waveform therefrom, and ensures that signal transitions in the pulse waveform occur more than a first time period apart and that the waveform can therefore be handled by, for example, a power switching device (312). A switching stage (312) in the loop is coupled to the qualification logic. The signal processor (300) has a feedback path from the output of the switching stage (312) to the input of the at least one integrator stage (306) thereby closing the loop.

7. 发明公开

EP1552629A2 MULTIPATH SIGNAL STRENGTH INDICATOR 有权
标题翻译：更多的途径信号强度指示器
公开(公告)号：EP1552629A2
公开(公告)日：2005-07-13
申请号：EP03754832.8
申请日：2003-09-22
申请人： Thomson Licensing S.A.
发明人： BOUILLET, Aaron, Reel , MAYER, Matthew, Thomas
IPC分类号： H04B14/06
CPC分类号： H04L1/20 , H04B17/318 , H04L2025/03477
摘要： A multipath signal strength indicator (40) is included in a communications receiver which is responsive to a communications channel subject to a multipath signal. The multipath signal strength indicator includes circuitry (30) for estimating the characteristics of the communications channel and circuitry (24) for storing nominal characteristics of a communications channel free of the multipath signal. Further circuitry (22) calculates the difference between the nominal characteristic and the estimated channel characteristic as the multipath signal strength.

8. 发明公开

EP1078481A4 METHOD AND APPARATUS FOR AUTOMATED TIME DOMAIN MONITORING IN OPTICAL NETWORKS 有权
标题翻译：方法和装置自动工时域看着光网络
公开(公告)号：EP1078481A4
公开(公告)日：2004-06-16
申请号：EP99921955
申请日：1999-05-13
申请人： TELCORDIA TECH INC
发明人： BANWELL THOMAS C , CHEUNG NIM K , ANDERSON WILLIAM T , HODGE JAMES
IPC分类号： H04B10/02 , H04B10/08 , H04Q11/04 , H04B14/06
CPC分类号： H04B10/079 , H04B10/0795 , H04J2203/0062
摘要： Methods and apparatuses are provided for determining characteristics of an input optical signal in an optical network. An optical signal monitoring apparatus (200) estimates a minimum time interval between transitions (210) in the input signal, determines a clock signal (206) based on the estimated minimum time interval, and performs a time domain measurement (230) on the input signal based on the determined clock signal. The optical signal monitoring apparatus (200) samples the input signal based on the determined clock signal and determines the characteristics of the input signal.

9. 发明授权

EP1157494B1 FREQUENCY-SHAPED PSEUDO-RANDOM CHOPPER STABILIZATION CIRCUIT AND METHOD FOR DELTA-SIGMA MODULATOR 有权
标题翻译：用于DELTA-SIGMA调制器的频率形伪随机斩波稳定电路和方法
公开(公告)号：EP1157494B1
公开(公告)日：2004-04-28
申请号：EP00911762.3
申请日：2000-02-10
申请人： Burr-Brown Corporation
发明人： WANG, Binan
IPC分类号： H04K1/00 , H04L7/00 , H04B14/06 , H03M3/02
CPC分类号： H03M3/34 , H03M3/332 , H03M3/43 , H03M3/438
摘要： A system for reducing sensitivity of an integrated circuit chopper-stabilized amplifier to intermodulation applies a pseudo-random sequence signal (11A) to an LSB of a first input of a first adder. An error feedback (18) is applied to a second input of the first adder and a first input of a second adder (16). A 1-bit quantization signal ( phi CH) is produced as an MSB of an output of the first adder and applied to an LSB of a second input of the second adder (16). An error signal (16A) representing the difference between the quantization signal ( phi CH) and the error feedback signal (18) is produced by the second adder (16) and delayed by a predetermined amount to produce the error feedback signal (18), wherein energy of the quantization signal ( phi CH) is spread over a broad frequency spectrum between DC and FS/2. The chopping signals are applied to corresponding chopper switches and used to reduce sensitivity of the delta-sigma modulator.
摘要翻译：用于降低集成电路斩波稳定放大器对互调的灵敏度的系统将伪随机序列信号（11A）施加到第一加法器的第一输入的LSB。错误反馈（18）被施加到第一加法器的第二输入端和第二加法器（16）的第一输入端。产生1位量化信号（φCH）作为第一加法器的输出的MSB并施加到第二加法器（16）的第二输入的LSB。表示量化信号（φCH）和误差反馈信号（18）之间差值的误差信号（16A）由第二加法器（16）产生并被延迟预定量以产生误差反馈信号（18），其中量化信号（φCH）的能量分布在DC和FS / 2之间的宽频谱上。斩波信号被施加到相应的斩波器开关并用于降低Δ-Σ调制器的灵敏度。

10. 发明公开

EP1021876A4 SIGNAL PROCESSING METHOD AND DEVICE 审中-公开
标题翻译：信号处理方法和装置
公开(公告)号：EP1021876A4
公开(公告)日：2003-05-02
申请号：EP98942269
申请日：1998-08-26
申请人： ATMEL CORP
发明人： LIPASTI LAURI , KOVANEN ARHIPPA
IPC分类号： H03M3/02 , H03M7/00 , H03M7/36 , H04B14/06
CPC分类号： H03M3/458 , H03M7/3028 , H03M7/304
摘要： The invention relates to digital signal processing and specificly to level control of a pulse density modulated (PDM) signal generated by a sigma-delta modulator. A single-bit pulse density modulated PDM signal is generated by a first sigma-delta modulator (2) being an analog modulator, for instance. Level control is performed by multiplying the single-bit pulse density modulated PDM signal by a multibit multiplier (300) to obtain a multibit number stream, which is reconverted into a single-bit PDM signal by a second digital sigma-delta modulator (4). In accordance with the invention, the performance of the second sigma-delta modulator (4) is better than that of the first sigma-delta modulator (2), as to the signal-to-noise ratio. Thus, the most significant factor in the total signal-to-noise ratio (SNR) is the noise level of the first sigma-delta modulator (2), by which the PDM signal was originally generated. In the subsequent second sigma-delta modulator (4), the PDM signal can then be attenuated as much as is the difference between the SNR performances of the modulators without any decrease in the total signal-to-noise ratio. A relative amplification of the PDM signal is provided in this manner.

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