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1. 发明公开

EP0729676A4 METHOD AND APPARATUS FOR ERROR MITIGATING A RECEIVED COMMUNICATION SIGNAL 无效
标题翻译：方法和设备上的错误削弱接收到的通信信号
公开(公告)号：EP0729676A4
公开(公告)日：2004-12-08
申请号：EP95929368
申请日：1995-08-03
申请人： MOTOROLA INC
发明人： LAIRD KEVIN MICHAEL , SMITH SYBREN , MARKO PAUL D , WADIN CRAIG P
IPC分类号： H03M7/38 , H04B14/06 , H04L1/00 , H03M3/04 , H03M7/00
CPC分类号： H04L1/20 , H04B14/068 , H04L1/0059 , H04L1/0061
摘要： A method and apparatus for mitigating error in a received communications signal includes an error mitigator (35) of a communication unit (12) which receives and performs mitigation based on an error indication. In a first embodiment, the error indication is a phase or non-used data symbol indicating error in ADPCM data, and mitigation includes changing certain nibble values to different predetermined values. In a second embodiment, the error indication may include other parameters, e.g., a CRC frame error indicator, and an error estimator (34) determines a level of corruption in the ADPCM data. The error mitigator (35) applies a predetermined set of replacement values based on the indicated level of corruption, and the mitigated data is subsequently decoded in an ADPCM decoder (26).

2. 发明授权

EP0856960B1 Reception data expander 失效
标题翻译：接收数据扩展
公开(公告)号：EP0856960B1
公开(公告)日：1999-10-13
申请号：EP97112731.1
申请日：1997-07-24
申请人： MITSUBISHI DENKI KABUSHIKI KAISHA
发明人： Murata, Kenji , Goto, Koji
IPC分类号： H04B14/06
CPC分类号： H04B14/068

3. 发明公开

EP0691054A4 EFFICIENT TRANSCODING DEVICE AND METHOD 失效转让
标题翻译：方法和设备高效TRANS CODING
公开(公告)号：EP0691054A4
公开(公告)日：1999-04-14
申请号：EP95904792
申请日：1994-12-01
申请人： CODEX CORP
发明人： EYUBOGLU M VEDAT , YONG MEI
IPC分类号： H04B14/06 , H04N7/26
CPC分类号： H04N19/40 , H04B14/068
摘要： The present invention provides a transcoder (400) for transcoding of digitally encoded bit streams produced by predictive encoders. The transcoder of this invention is less complex than previously known transcoders in terms of both computational and storage requirements. This efficiency is achieved by combining decoding and re-encoding steps into one step. This one-step transcoding is accomplished by modifying the originally quantized vectors and then requantizing and noiseless encoding these vectors into a bit stream in accordance with a predetermined objective (1200).

4. 发明授权

EP0502681B1 An adaptive system for measuring the broadband signal-to-noise ratio of a transmission channel 失效转让
标题翻译：用于测量宽带信号到一个传输信道的信噪比自适应系统
公开(公告)号：EP0502681B1
公开(公告)日：1996-02-28
申请号：EP92301777.6
申请日：1992-03-02
申请人： AT&T Corp.
发明人： Grizmala, Fredrick , Levonas, Robin
IPC分类号： H04B14/06 , H04B17/00 , H04B3/46 , G01R29/26
CPC分类号： H04B14/068

5. 发明公开

EP0537804A2 Speech recording apparatus 失效
标题翻译： Sprachaufzeichnungsgerät。
公开(公告)号：EP0537804A2
公开(公告)日：1993-04-21
申请号：EP92122163.6
申请日：1988-01-14
申请人： SHARP KABUSHIKI KAISHA
发明人： Morio, Tomokazu , Fujimoto, Yoshiji , Kitoh, Atsunori
IPC分类号： H04B1/66 , G10L3/02
CPC分类号： G10L25/78 , H04B1/66 , H04B14/068
摘要： The present invention relates to a speech recording apparatus in which soundless portions of a speech signal are compressed when the speech signal is analyzed and coded, to be recorded. In order to provide an improved speech recording apparatus in which the soundless section in the speech signal is adapted to be further compressed by real time, and at the same time even the head or the ending of a word or a short-time weak section is not recorded as a soundless section. In the speech recording apparatus of the invention a second address counter (119) or register cooperating with a first address counter (113) is provided so that, when said speech signal is a candidate for a soundless signal, the content of the first counter (113) is stored in the second counter (119), and when the speech signal is confirmed as being a soundless signal, the content of the second counter (119) is turned back to the first counter (113) and taken as the address of a speech code memory (114).
摘要翻译：语音记录装置技术领域本发明涉及一种话音记录装置，其中当对语音信号进行分析和编码时，语音信号的无声部分被压缩，以被记录。为了提供一种改进的语音记录装置，其中语音信号中的无声部分适于被实时进一步压缩，并且同时甚至字或短时间弱部分的头部或结尾是不记录为无声部分。在本发明的语音记录装置中，提供与第一地址计数器（113）协作的第二地址计数器（119）或寄存器，使得当所述语音信号是无声信号的候选者时，第一计数器 113）被存储在第二计数器（119）中，并且当语音信号被确认为无声信号时，第二计数器（119）的内容被转回到第一计数器（113），并作为语音码存储器（114）。

6. 发明公开

EP0275099A3 Voice analyzing and synthesizing apparatus 失效
标题翻译：语音分析和合成设备
公开(公告)号：EP0275099A3
公开(公告)日：1990-09-19
申请号：EP88100440.2
申请日：1988-01-14
申请人： SHARP KABUSHIKI KAISHA
发明人： Morio, Tomokazu , Fujimoto, Yoshiji , Kitoh, Atsunori
IPC分类号： H04B14/06
CPC分类号： G10L25/78 , H04B1/66 , H04B14/068
摘要： A speech analyzing and synthesizing apparatus according to the present invention is comprised of a sampling means for sampling an inputted speech signal, a speech analyzer for analyzing and coding said inputted speech signal, and a speech synthesizer for decoding the speech signal coded by said speech analyzer into a synthesized speech, whereby the average code length can be advantageously shortened to realize a low capacity memory and a well-analyzed and synthesized speech. Moreover, the present invention is related to a speech recording apparatus wherein a soundless section in the inputted speech signal is arranged to be compressed by real time, and even a weak short-time portion in the sounded section of an inputted speech signal is not erroneously judged to be soundless, but is coded as a sounded portion.

7. 发明公开

EP0206273A2 Adaptive differential pulse code modulation system. 失效
标题翻译：适应不同的脉冲调制系统。
公开(公告)号：EP0206273A2
公开(公告)日：1986-12-30
申请号：EP86108409
申请日：1986-06-20
申请人： FUJITSU LTD
发明人： TAKEBAYSHI TOMOYOSHI , YAMAMOTO KAORU , MIYAZAKI TSUYOSHI , MURANO KAZUO , MORI HIROMI
IPC分类号： H04B14/06
CPC分类号： H04B14/068
摘要： An adaptive differential pulse code modulation system includes an adaptive quantizer (12) and an adaptive predictor (14) which have a coding characteristic optimized to a voice signal, and a quantizer (12) and a predictor (14) which have a coding characteristic optimized to a voice band MODEM signal. This system is normally used as a coding system optimized to the voice signal, and when this system detects a MODEM training signal, it becomes a coding system optimized to the MODEM signal.
摘要翻译：自适应差分脉码调制系统包括具有针对话音信号优化的编码特性的自适应量化器（12）和自适应预测器（14），以及量化器（12）和预测器（14）到语音频带MODEM信号。该系统通常用作针对语音信号优化的编码系统，当该系统检测到MODEM训练信号时，该系统将成为针对MODEM信号优化的编码系统。

8. 发明公开

EP0099397A4 ADAPTIVE DIFFERENTIAL PCM CODING. 失效
标题翻译：自适应差分PCM编码。
公开(公告)号：EP0099397A4
公开(公告)日：1984-06-13
申请号：EP83900589
申请日：1983-01-14
申请人： WESTERN ELECTRIC CO
发明人： PETR DAVID WARREN
IPC分类号： H03M3/04 , H03M7/38 , H04B14/06 , H03K13/02
CPC分类号： H04B14/068

9. 发明公开

EP0091979A1 Bereichsprädiktives Code-Modulationsverfahren mit signaladaptiv reduzierter bit-Rate 有权转让
标题翻译： BereichsprädiktivesCode-Modulationsverfahren mit signaladaptiv reduzierter bit-rate。
公开(公告)号：EP0091979A1
公开(公告)日：1983-10-26
申请号：EP82103296.8
申请日：1982-04-20
申请人： Kehler, Waldemar, Dipl.-Ing.
发明人： Kehler, Waldemar, Dipl.-Ing.
IPC分类号： H04B14/06 , H04N7/13
CPC分类号： H04B14/068 , H04N19/124 , H04N19/50
摘要： Auf der Basis prädiktiver Verfahren wie der Differenz-Puls-Code-Modulation wird unter DE 3 020 061 A1 (Deutsches Patentamt) ein Verfahren angegeben, das neben dem Prädiktionswert weitere Erwartungsparameter der Signalcharakteristik nutzt, um anstelle einer zentralen Prädiktion eine Erwartungsmethode zu stellen. Die Grundlagen jenes «mehrfach adaptiven» Codierverfahrens desselben Erfinders werden genutzt und erweitert, um erfindungsgemäß ein «bereichsprädiktives Code-Modulationsverfahren mit signaladaptiv reduzierter bit-Rate» zu erzielen. Als Erwartungsfunktion zur Zentrierung einer Signal-Erwartungsmenge kann hier ein Erwartungsbereich derart definiert werden, daß er idealerweise alle divergierenden, aus einem Signal isolierbaren Erwartungsparameter berücksichtigt. In nahezu allen Fällen wird ein solcher Erwartungsbereich enger sein als die üblichen Quantisierungsbereiche konventioneller DPCM. Bei gleicher Stufung ist oft erhebliche Redundanz erkennbar, die entsprechend nutzbar ist. Das Codierverfahren eignet sich für alle quasiperiodischen (prädiktiven Verfahren zugänglichen) Signalmengen insbesondere die Bildcodierung (Bildperiode) und die Codierung stimmhafter Sprachlaute. Der Einsatz kommt besonders dort in Frage, wo variable Codewortlängen zulässig sind.
摘要翻译： 1.预测量化方法，用于编码预测值范围，根据预定数量的高发生概率根据定义的标准分类的域，其特征在于预期数量考虑了所有相关的分散期望参数（预测），从信号发展技术上可以获得，由此限定根据其最小和最大限制的尺寸可量化的期望范围，由此可以根据其积累点来选择量化值。

10. 发明公开

EP2901594A1 ERROR DETECTION FOR SUB-BAND ADPCM ENCODED SOUND SIGNAL 失效
标题翻译：故障检测在零件带ADPCM编码音调
公开(公告)号：EP2901594A1
公开(公告)日：2015-08-05
申请号：EP13783110.3
申请日：2013-09-27
申请人： Panasonic Intellectual Property Management Co., Ltd.
发明人： SHIBUTA, Akira , SUWA, Yutaka , ISHIHARA, Hiroyuki , OBANA, Kyoichi
IPC分类号： H04L1/00 , H03M13/09 , H04B14/06 , G10L19/005 , H03M3/04 , G10L19/02
CPC分类号： H04L1/0061 , G10L19/005 , G10L19/0204 , H03M3/042 , H03M7/3046 , H03M13/09 , H04B14/068 , H04L1/0041 , H04L1/0042
摘要： A device divides a sampled sound signal into a high frequency signal and a low frequency signal, individually encodes the high frequency signal and the low frequency signal, and generates error detection code pertinent to the high frequency ADPCM data and the low frequency ADPCM data. The device replaces data pertinent to some of a plurality of bits which configure the low frequency ADPCM data with the error detection code and transmits them. A receiver side receives the high frequency ADPCM data and the low frequency ADPCM data, and individually processes the high frequency ADPCM data and the low frequency ADPCM data in accordance with a value of the error detection code.

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