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1. 发明申请

WO1996010870A1 PSYCHOACOUSTIC AUDIO-SIGNAL CODING SYSTEM AND METHOD 审中-公开
标题翻译： PSYCHOACOUSTIC音频信号编码系统和方法
公开(公告)号：WO1996010870A1
公开(公告)日：1996-04-11
申请号：PCT/EP1995003866
申请日：1995-09-29
申请人： ALCATEL ITALIA S.P.A. , ALCATEL N.V. , PARLADORI, Giorgio , MIAN, Gain, Antonio , ANDREOLA, Renato
发明人： ALCATEL ITALIA S.P.A. , ALCATEL N.V.
IPC分类号： H04B01/66
CPC分类号： H04B1/665
摘要： The present invention relates to a method and to a psychoacoustic system for encoding the audio-signal that exploits the perceptive characteristics of the human auditive system. In particular, the system is based on a method of analysis which permits to highlight the characteristics of the audio-signal that result to be perceptively significant. Such information, according to one aspect of the invention, can be used for compressing the information contained in said signal in order to be able to transmit it in an effective manner.
摘要翻译：本发明涉及一种用于对利用人类听觉系统的感知特征的音频信号进行编码的心理声学系统。特别地，该系统基于分析方法，其允许突出显示导致感知重要性的音频信号的特性。根据本发明的一个方面，这样的信息可以用于压缩包含在所述信号中的信息，以便能够以有效的方式发送信息。

2. 发明专利

DE9206131U1 未知
公开(公告)号：DE9206131U1
公开(公告)日：1992-07-16
申请号：DE9206131
申请日：1992-05-07
申请人： ALCATEL ITALIA S.P.A., MAILAND/MILANO, IT
IPC分类号： B65G47/54

3. 发明专利

DE9214827U1 未知
公开(公告)号：DE9214827U1
公开(公告)日：1993-02-25
申请号：DE9214827
申请日：1992-10-31
申请人： ALCATEL ITALIA S.P.A., MAILAND/MILANO, IT
IPC分类号： B65G13/07 , B65G47/26

4. 发明专利

ES2046613T3 未知
公开(公告)号：ES2046613T3
公开(公告)日：1994-02-01
申请号：ES90114147
申请日：1990-07-24
申请人： ALCATEL ITALIA S.P.A.
发明人： SCATA, MARIO
IPC分类号： G06K7/015 , G06K7/10 , B65G47/24 , B07C5/02

5. 发明授权

US5541966A System and circuit for estimating the carrier frequency of a PSK numeric signal 失效
标题翻译：用于估计PSK数字信号的载波频率的系统和电路
公开(公告)号：US5541966A
公开(公告)日：1996-07-30
申请号：US131208
申请日：1993-10-01
申请人： Maurizio Bolla , Massimo Gelichi , Franco Guglielmi , Nino Leuratti
发明人： Maurizio Bolla , Massimo Gelichi , Franco Guglielmi , Nino Leuratti
IPC分类号： H04L27/22 , H04L27/00 , H04L27/233 , H04L27/06
CPC分类号： H04L27/2332 , H04L2027/0065
摘要： The present invention concerns a system for estimating the carrier frequency of a PSK numeric signal, in which symbols are transmitted at frequency fs. The invention is characterized by the use of an estimate, at each symbol interval, of the angular difference between two successive data. Such estimate, suitably processed, provides the control signal for a circuit that compensates the frequency error between the carrier of the received signal and the local oscillator. In a not limiting embodiment, the invention can be implemented through digital circuitry.
摘要翻译：本发明涉及一种用于估计PSK数字信号的载波频率的系统，其中以频率fs发送符号。本发明的特征在于使用在每个符号间隔处的两个连续数据之间的角度差的估计。适当处理的这种估计为补偿接收信号的载波与本地振荡器之间的频率误差的电路提供控制信号。在非限制性实施例中，本发明可以通过数字电路实现。

6. 发明授权

US5353032A Circuit including a phase shifter for generating signals for electronically scanned antennas 失效
标题翻译：电路包括用于产生电子扫描天线的信号的移相器
公开(公告)号：US5353032A
公开(公告)日：1994-10-04
申请号：US59090
申请日：1993-05-05
申请人： Giuseppe Bertocchi , Paolo Mauri
发明人： Giuseppe Bertocchi , Paolo Mauri
IPC分类号： G01S1/48 , H01Q3/36 , H01Q3/40 , H01Q3/22 , H01Q3/24 , H01Q3/26
CPC分类号： G01S1/48 , H01Q3/36 , H01Q3/40
摘要： A circuit generates RF signals for electronically scanned antennas and in particular for TACAN systems. The circuit includes a phase shifter that is particularly suitable for use in generating these RF signals. Instead of using circuits including a large Butler-matrix, a small Butler-matrix having only a few outputs is used for combining a limited number of outputs of a power divider. By further combining the remaining outputs of the power divider with the few outputs of the Butler-matrix by the use of electromagnetic combiners, a plurality of RF signals that are suitable for use by electronically scanned antennas are obtained from the circuit which is comparatively simple in structure yet produces very accurately controlled RF signals.
摘要翻译：电路产生用于电子扫描天线的RF信号，特别是用于TACAN系统。该电路包括特别适用于产生这些RF信号的移相器。代替使用包括大型Butler矩阵的电路，仅使用少量输出的小型Butler矩阵用于组合功率分配器的有限数量的输出。通过使用电磁组合器进一步组合功率分配器的剩余输出与巴特勒矩阵的少数输出，可以从电路中获得适合于电子扫描天线使用的多个RF信号，该电路相对简单结构仍然产生非常精确控制的RF信号。

7. 发明授权

US5592516A Method and circuits for combining baseband signals and recovery of clock timing 失效
标题翻译：用于组合基带信号和恢复时钟时序的方法和电路
公开(公告)号：US5592516A
公开(公告)日：1997-01-07
申请号：US270140
申请日：1994-07-01
申请人： Franco Guglielmi , Carlo Luschi , Arnaldo Spalvieri
发明人： Franco Guglielmi , Carlo Luschi , Arnaldo Spalvieri
IPC分类号： H04L1/02 , H04B7/08 , H04L27/22 , H04L7/00
CPC分类号： H04B7/0854
摘要： The invention relates to a baseband signal combiner and to a sampler typically used in radio relay systems and also in generic communication systems. In order to avoid temporary failures in the free space links, space and/or frequency diversity techniques are used, which consist in the use of two suitably spaced receive antennas or of two transmission frequencies. By suitably combining the signals thus received, the failures in radio links can be redued. The invention provides the use of a particular algorithm of the type CMA (Constant Modulus Algorithm) which, being independent of the combined signal phase, does not interact with the carrier recovery circuits. Moreover, by also applying the same algorithm to the sampler, the cooperation of the two circuits for the optimization of the output signal is obtained.
摘要翻译：本发明涉及基带信号组合器和通常用于无线电中继系统以及通用通信系统中的采样器。为了避免自由空间链路中的暂时故障，使用空间和/或频率分集技术，其包括使用两个适当间隔的接收天线或两个传输频率。通过适当地组合如此接收的信号，可以减少无线电链路中的故障。本发明提供使用类型CMA（恒模算法）的特定算法，其独立于组合信号相位不与载波恢复电路相互作用。此外，通过对采样器应用相同的算法，可以获得两个电路的协调来优化输出信号。

8. 发明授权

US5581583A Optimizing the analog BER function in a spatial angular diversity digital radio receiver 失效
标题翻译：在空间角度分集数字无线电接收机中优化模拟BER功能
公开(公告)号：US5581583A
公开(公告)日：1996-12-03
申请号：US304624
申请日：1994-09-12
申请人： Adelio Conti , Rocco Nobili , Paolo Troyer
发明人： Adelio Conti , Rocco Nobili , Paolo Troyer
IPC分类号： H04B7/02 , H04B7/08 , H04L1/06 , H04B17/02
CPC分类号： H04B7/084 , H04L1/06 , H04B7/0851 , H04B7/0857
摘要： A radio link for a digital radio transmission system having spatial and/or angular diversity is optimized in real time by searching for a minimum of the analog BER function BERn(.phi.), by analyzing the minimum to determine if it is an "absolute" minimum that will result in an optimal radio link, and if not, searching for another minimum until the absolute minimum is located. Once the relative phase .phi. corresponding to the absolute minimum has been thus determined with both channels having the same nominal attenuation level, the relative attenuation level T of the two channels may then be varied in order to optimize the dispersion Ban.sub.n (T) of the recombined data spectrum while holding the relative phase at its previously optimized value.
摘要翻译：具有空间和/或角度分集的数字无线电传输系统的无线电链路通过搜索最小的模拟BER功能BERn（phi）来实时优化，通过分析最小来确定它是否是“绝对”最小值这将导致最佳无线电链路，如果没有，则搜索另一个最小值，直到找到绝对最小值。一旦相应于绝对最小值的相对相位phi已经由两个信道具有相同的标称衰减电平确定，则可以改变两个信道的相对衰减电平T，以优化重组的分量Bann（T）数据光谱，同时将相对相位保持在其先前优化的值。

9. 发明授权

US5504769A Semiconductor laser having low current threshold 失效
标题翻译：具有低电流阈值的半导体激光器
公开(公告)号：US5504769A
公开(公告)日：1996-04-02
申请号：US196289
申请日：1994-02-14
申请人： Sergio Pellegrino , Massimo Del Giudice , Fabio Vidimari
发明人： Sergio Pellegrino , Massimo Del Giudice , Fabio Vidimari
IPC分类号： H01L33/00 , H01S5/20 , H01S5/227 , H01S3/18
CPC分类号： H01S5/227 , H01L33/0062 , H01S5/20 , H01S5/2059 , H01S5/2275
摘要： A semiconductor laser including a substrate, means for reducing the lateral current flow and means forming the active elements, wherein said means for reducing the lateral current flow are composed by at least three layers of which the external ones are entirely doped and the internal layers are doped only in the zones lateral to the active element so that these layers reduce the side current flow.
摘要翻译：一种包括衬底的半导体激光器，用于减小横向电流的装置和形成有源元件的装置，其中所述用于减小横向电流的装置由至少三层构成，其中外层全部被掺杂，内层是仅在有源元件横向的区域中掺杂，使得这些层减少侧电流。

10. 发明授权

US5493587A Method and circuits for reducing the peak power of the filtered signal transmitted in a digital link 失效
标题翻译：用于降低在数字链路中发送的滤波信号的峰值功率的方法和电路
公开(公告)号：US5493587A
公开(公告)日：1996-02-20
申请号：US097675
申请日：1993-07-27
申请人： Andrea Sandri , Arnaldo Spalvieri
发明人： Andrea Sandri , Arnaldo Spalvieri
IPC分类号： H04L27/34 , H04B15/00
CPC分类号： H04L27/3411
摘要： The invention relates to a method of reducing the peak power of a signal at the output of the transmit filter of a digital link, e.g. a microwave link. The invention is characterized by the use of a coding in transmission and a decoding in reception, adapted to reduce the peak power of the filtered signal. In the disclosed embodiment, not intended to be limiting, the encoder and the decoder can be realized through simple maps insertable in the baseband part of the system.
摘要翻译：本发明涉及一种降低数字链路的发射滤波器的输出处的信号的峰值功率的方法，例如，微波链接。本发明的特征在于使用传输中的编码和接收中的解码，适于降低滤波信号的峰值功率。在所公开的实施例中，不想限制，编码器和解码器可以通过可插入到系统的基带部分中的简单地图来实现。

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