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1. 发明授权

US06363341B1 Encoder for minimizing resulting effect of transmission errors 失效
标题翻译：用于最小化传输错误的影响的编码器
公开(公告)号：US06363341B1
公开(公告)日：2002-03-26
申请号：US09310087
申请日：1999-05-11
申请人： Ludovicus M. G. M. Tolhuizen , Robert J. Sluijter , Andreas J. Gerrits
发明人： Ludovicus M. G. M. Tolhuizen , Robert J. Sluijter , Andreas J. Gerrits
IPC分类号： G10L1900
CPC分类号： G10L19/005 , G10L2019/0001 , G10L2019/0013
摘要： A transmission system comprising a transmitter with a signal encoder, the signal encoder having an input for a signal to be encoded and a codebook entry selector for selecting a codebook entry for obtaining a synthetic signal giving a best approximation of a signal representative of the input signal, wherein the codebook entry includes a plurality of samples that can assume more than two values and is identified with a sequence of symbols, a receiver having a decoder with a codebook for deriving the codebook entry from the sequence of symbols received from the transmitter, wherein the codebook entries corresponding to sequences of symbols that differ in one particular symbol value also differ in one single sample value.
摘要翻译：一种传输系统，包括具有信号编码器的发射机，所述信号编码器具有用于要被编码的信号的输入，以及码本条目选择器，用于选择用于获得代表输入信号的信号的最佳近似的合成信号的码本条目其中所述码本条目包括可以采用多于两个值并且用符号序列标识的多个样本，具有解码器的接收机，具有用于从从所述发射机接收的符号序列中导出码本条目的码本，其中对应于一个特定符号值不同的符号序列的码本条目也在一个单个样本值中不同。

2. 发明授权

US06208274B1 Transmission system using a variable length encoder 失效
标题翻译：传输系统采用可变长度编码器
公开(公告)号：US06208274B1
公开(公告)日：2001-03-27
申请号：US09113964
申请日：1998-07-10
申请人： Rakesh Taori , Robert J. Sluijter , Andreas J. Gerrits
发明人： Rakesh Taori , Robert J. Sluijter , Andreas J. Gerrits
IPC分类号： H03M740
CPC分类号： H03M7/42
摘要： In a transmission system a variable length encoder is used to reduce the average bitrate of a sequence of symbols. In order to limit the maximum length of the code it is proposed to transmit the sequence of symbols only in coded form if the length of the coded sequence is lower than a predetermined value
摘要翻译：在传输系统中，可变长度编码器用于减小符号序列的平均比特率。为了限制代码的最大长度，如果编码序列的长度低于预定值，则建议仅以编码形式发送符号序列

3. 发明授权

US6078879A Transmitter with an improved harmonic speech encoder 失效
标题翻译：具有改进的谐波语音编码器的发射机
公开(公告)号：US6078879A
公开(公告)日：2000-06-20
申请号：US114749
申请日：1998-07-13
申请人： Rakesh Taori , Robert J. Sluijter , Andreas J. Gerrits
发明人： Rakesh Taori , Robert J. Sluijter , Andreas J. Gerrits
IPC分类号： G10L25/12 , G10L19/04 , G10L19/10 , G10L21/02 , G10L25/90 , G10L19/00 , G10L19/08
CPC分类号： G10L25/90 , G10L19/10
摘要： In a harmonic speech encoder (16) a speech signal to be encoded is represented by a plurality of LPC parameters which are determined by a LPC parameter computer (30), a pitch value and a gain value. The speech encoder comprises a (coarse) pitch estimator (38) for determining a coarse pitch, and a refined pitch computer (32) to determine a refined pitch from the coarse pitch value. The refined pitch value is determined in an analysis by synthesis way, in which a refined pitch value is selected which results in a minimum error measure between a representation of a synthesized speech signal and a representation of the original speech signal.
摘要翻译：在谐音语音编码器（16）中，要由LPC参数计算机（30）确定的多个LPC参数，音调值和增益值来表示要编码的语音信号。语音编码器包括用于确定粗音调的（粗）音调估计器（38）和精调音调计算机（32），用于根据粗音调值确定精细音调。在通过合成方式的分析中确定精细音调值，其中选择精细音调值，其导致合成语音信号的表示和原始语音信号的表示之间的最小误差测量。

4. 发明授权

US6128591A Speech encoding system with increased frequency of determination of analysis coefficients in vicinity of transitions between voiced and unvoiced speech segments 失效
标题翻译：语音编码系统具有增加的有声和语音段之间的转换附近分析系数的确定频率
公开(公告)号：US6128591A
公开(公告)日：2000-10-03
申请号：US114746
申请日：1998-07-13
申请人： Rakesh Taori , Robert J. Sluijter , Andreas J. Gerrits
发明人： Rakesh Taori , Robert J. Sluijter , Andreas J. Gerrits
IPC分类号： G10L19/18 , G10L11/06
CPC分类号： G10L19/18
摘要： In a speech encoder (4), a speech signal is encoded using a voiced speech encoder (16) and an unvoiced speech encoder (14). Both speech encoders (14,16) use analysis coefficients to represent the speech signal. The analysis coefficients are determined more frequently when a transition from voiced to unvoiced speech or vice versa is detected. This has been found to achieve significantly improved quality of speech reproduced from the encoded speech signal.
摘要翻译：在语音编码器（4）中，使用有声语音编码器（16）和无声语音编码器（14）对语音信号进行编码。两个语音编码器（14,16）使用分析系数来表示语音信号。当检测到从有声到无声语音或反之亦然的转变时，更频繁地确定分析系数。已经发现已经从编码的语音信号中获得显着提高的语音质量。

5. 发明授权

US5878081A Transmission system for quasi periodic signals 失效
标题翻译：准周期信号传输系统
公开(公告)号：US5878081A
公开(公告)日：1999-03-02
申请号：US949648
申请日：1997-10-14
申请人： Robert J. Sluijter , Eric Kathmann , Rakesh Taori
发明人： Robert J. Sluijter , Eric Kathmann , Rakesh Taori
IPC分类号： G10L19/097 , G11B20/10 , H03M7/30 , H04B1/00 , H04B14/04
CPC分类号： G10L19/097 , G11B20/10527
摘要： In a transmission system for a quasi-periodic signal, an encoder (12) transmits to a decoder (28) no more than a single period from a total number of periods of the quasi-periodic signal in encoded form. In this decoder (28) the lacking periods of the quasi-periodic signal are reconstructed by means of interpolation. For obtaining an enhanced quality of the reconstructed signal, a signal segment is transmitted that is representative of two successive periods of the quasi-periodic signal. This signal segment may contain two successive periods, but may also be a signal segment having the length of a single period and being determined by a weighted sum of two successive periods.
摘要翻译：在用于准周期性信号的传输系统中，编码器（12）从编码形式的准周期信号的周期的总数不超过一个周期向解码器（28）发送。在该解码器（28）中，通过插值重构准周期信号的缺少周期。为了获得重构信号的增强质量，传输代表准周期信号的两个连续周期的信号段。该信号段可以包含两个连续的周期，但也可以是具有单个周期的长度并由两个连续周期的加权和确定的信号段。

6. 发明授权

US5109488A Data processing system buffering sequential data for cyclically recurrent delay times, memory address generator for use in such system 失效
标题翻译：数据处理系统缓冲周期性延迟时间的顺序数据，用于这种系统的存储器地址发生器
公开(公告)号：US5109488A
公开(公告)日：1992-04-28
申请号：US316720
申请日：1989-02-28
申请人： Hendrik Dijkstra , Cornelis M. Huizer , Robert J. Sluijter
发明人： Hendrik Dijkstra , Cornelis M. Huizer , Robert J. Sluijter
IPC分类号： G06F5/06 , G06F7/78 , G06F12/02 , G11C19/00
CPC分类号： G06F7/785
摘要： A data processing system buffers sequential data for the duration of cyclically recurrent delay times. Memory location allocation is performed in such a way, that the memory is used efficiently without data-shifting after a read-out, and that the address generator is fairly simple.

7. 发明授权

US5103311A Data processing module and video processing system incorporating same 失效
标题翻译：数据处理模块和视频处理系统
公开(公告)号：US5103311A
公开(公告)日：1992-04-07
申请号：US593366
申请日：1990-10-01
申请人： Robert J. Sluijter , Cornelis M. Huizer , Hendrik Dijkstra , Gerrit A. Slavenburg
发明人： Robert J. Sluijter , Cornelis M. Huizer , Hendrik Dijkstra , Gerrit A. Slavenburg
IPC分类号： G06F3/14 , G06F9/30 , G06F9/38 , G06F15/16 , G06T1/20
CPC分类号： G06T1/20 , G06F9/3885
摘要： The invention describes a processor system suitable for processing video signal samples on a real-time basis. Signals are derived from the samples for driving an imaging unit. For this purpose, one or more processor modules are provided with processor elements, operating in parallel in time, which are connected to a crossbar switch. A module contains at least one arithmetic/logic processor element and at least one memory processor element. Moreover, there is a clock device, the frequency of which bears a fixed relationship to the frequency with which the video signal samples are obtained.
摘要翻译：本发明描述了适用于实时地处理视频信号样本的处理器系统。来自用于驱动成像单元的样本的信号。为此，一个或多个处理器模块设置有与时间并行操作的处理器元件，其连接到交叉开关。模块包含至少一个算术/逻辑处理器元件和至少一个存储器处理器元件。此外，还有一个时钟装置，其频率与获得视频信号样本的频率具有固定的关系。

8. 发明授权

US6014619A Reduced complexity signal transmission system 失效
标题翻译：降低复杂度信号传输系统
公开(公告)号：US6014619A
公开(公告)日：2000-01-11
申请号：US798889
申请日：1997-02-11
申请人： Friedhelm Wuppermann , Eric Kathmann , Robert J. Sluijter , Fransiscus M. J. De Bont
发明人： Friedhelm Wuppermann , Eric Kathmann , Robert J. Sluijter , Fransiscus M. J. De Bont
IPC分类号： G10L19/12 , H03M7/30 , G10L9/14
CPC分类号： G10L19/12
摘要： In a CELP coder a comparison between a target signal and a plurality of synthetic signals is made. The synthetic signal is derived by filtering a plurality of excitation sequences by a synthesis filter having parameters derived from the target signal. The excitation signal which results in a minimum error between the target signal and the synthetic signal is selected. In order to reduce the complexity of the search for the best excitation signal, thee selection is done in two stages. First a preselection of a small number of excitation sequences is made using a reduced complexity synthesis filter. Thereafter, with this small number of excitation sequences, a full complexity search is made. Due to the reduced number of excitation sequences involved in the final selection the required computational complexity is reduced.
摘要翻译：在CELP编码器中，进行目标信号和多个合成信号之间的比较。通过具有从目标信号导出的参数的合成滤波器对多个激励序列进行滤波而导出合成信号。选择导致目标信号和合成信号之间的最小误差的激励信号。为了降低寻找最佳激励信号的复杂度，选择分为两个阶段。首先，使用降低复杂度的合成滤波器来进行少量激励序列的预选。此后，利用这个少量的激励序列，进行完全复杂的搜索。由于在最终选择中涉及的激励序列数量减少，所需的计算复杂度降低。

9. 发明授权

US4752956A Digital speech coder with baseband residual coding 失效
标题翻译：具有基带残差编码的数字语音编码器
公开(公告)号：US4752956A
公开(公告)日：1988-06-21
申请号：US708771
申请日：1985-03-06
申请人： Robert J. Sluijter
发明人： Robert J. Sluijter
IPC分类号： G10L19/06 , H04B14/04 , G10L5/00
CPC分类号： G10L19/06
摘要： A digital speech coder of the baseband RELP-type (Residual-Excited Linear Prediction) comprises a transmitter (1) having an LPC-anaylser (10), a first adaptive inverse filter (11), a decimation lowpass filter (26) for selecting the baseband prediction residue and an encoding-and-multiplexing circuit (17), and a receiver (2) having a demultiplexing-and-decoding circuit (21), an interpolator (27) and a first adaptive synthesizing filter (14). The occurrence of "tonal noises" due to the spectral folding in interpolator (27) is effectively counteracted by arranging prior to the decimation lowpass filter (26) in the transmitter (1) a second adaptive inverse filter (28) which with the aid of an autocorrelator (31) removes possible periodicy from the speech band residue, and by including subsequent to the interpolator (27) in the receiver (2) a corresponding second adaptive synthesis filter (32), which reintroduces the desired periodicity in the excitation signal.
摘要翻译：基带RELP型（残余激励线性预测）的数字语音编码器包括具有LPC分析器（10）的发射机（1），第一自适应逆滤波器（11），用于选择的抽取低通滤波器（26）基带预测残差和编码和复用电路（17），以及具有解复用和解码电路（21），内插器（27）和第一自适应合成滤波器（14）的接收机（2）。由于在内插器（27）中的频谱折叠引起的“音调噪声”的发生通过在发射机（1）中的抽取低通滤波器（26）之前布置第二自适应逆滤波器（28）而被有效地抵消，借助于第二自适应逆滤波器自相关器（31）从语音频带残余中去除可能的周期，并且通过在接收机（2）中包括随后的内插器（27），相应的第二自适应合成滤波器（32），其在激励信号中重新引入期望的周期。

10. 发明授权

US06985855B2 Transmission system with improved speech decoder 失效
标题翻译：具有改进语音解码器的传输系统
公开(公告)号：US06985855B2
公开(公告)日：2006-01-10
申请号：US10084714
申请日：2002-02-25
申请人： Robert J. Sluijter , Rakesh Taori
发明人： Robert J. Sluijter , Rakesh Taori
IPC分类号： G10L19/00
CPC分类号： G10L19/04 , G10L19/22
摘要： A transmission system includes a speech decoder, the speech decoder having a detector which determines a level of background noise in a speech signal and a post filter in electrical communication with an output of the decoder when the level of the background noise is equal to or less than a threshold value. A synthesis filter is connected to the output when the level of the background noise is greater than the threshold value.
摘要翻译：传输系统包括语音解码器，语音解码器具有检测器，该检测器确定语音信号中的背景噪声的电平，以及当背景噪声的电平等于或等于超过阈值。当背景噪声的电平大于阈值时，合成滤波器连接到输出。

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