公开(公告)号：US08812327B2

公开(公告)日：2014-08-19

申请号：US13382786

申请日：2010-06-25

Applicant: David Virette ,  Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

Inventor： David Virette ,  Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

IPC: G10L19/00 ,  G10L19/02 ,  G10L19/12 ,  G10L21/00 ,  G10L21/02 ,  G10L21/04 ,  G10L25/00 ,  G06F15/00 ,  H04N19/00

CPC classification number: G10L19/002 ,  G10L19/0212 ,  G10L19/038 ,  G10L19/24

Abstract: A method of hierarchical coding of a digital audio frequency input signal into several frequency sub-bands, including a core coding of the input signal according to a first throughput and at least one enhancement coding of higher throughput, of a residual signal. The core coding uses a binary allocation according to an energy criterion. The method includes for the enhancement coding: calculating a frequency-based masking threshold for at least part of the frequency bands processed by the enhancement coding; determining a perceptual importance per frequency sub-band as a function of the masking threshold and as a function of the number of bits allocated for the core coding; binary allocation of bits in the frequency sub-bands processed by the enhancement coding, as a function of the perceptual importance determined; and coding the residual signal according to the bit allocation. Also provided are a decoding method, a coder and a decoder.

Abstract translation: 一种将数字音频输入信号分层编码成若干频率子带的方法，包括根据第一吞吐量的输入信号的核心编码和较高吞吐量的残余信号的至少一个增强编码。 核心编码根据能量标准使用二进制分配。 该方法包括用于增强编码：计算由增强编码处理的至少部分频带的基于频率的掩蔽阈值; 确定每个频率子带的感知重要性作为掩蔽阈值的函数，并且作为分配给核心编码的比特数的函数; 由增强编码处理的频率子带中的位的二进制分配作为确定的感知重要性的函数; 并根据比特分配对残差信号进行编码。 还提供了解码方法，编码器和解码器。

公开(公告)号：US08965775B2

公开(公告)日：2015-02-24

申请号：US13382794

申请日：2010-06-25

Applicant: David Virette ,  Pierre Berthet

Inventor： David Virette ,  Pierre Berthet

IPC: G10L19/00 ,  G10L19/24 ,  G10L19/002 ,  G10L19/02 ,  G10L19/038

CPC classification number: G10L19/24 ,  G10L19/002 ,  G10L19/0212 ,  G10L19/038

Abstract: A method of binary allocation in an enhancement coding/decoding for improving a hierarchical coding/decoding of digital audio signals, including a core coding/decoding in a first frequency band and a band extension coding/decoding in a second frequency band. For a predetermined number of bits to be allocated for the enhancement coding/decoding, a first number of bits is allocated to a coding/decoding for correcting the core coding/decoding in the first frequency band and according to a first mode of coding/decoding and a second number of bits is allocated to an enhancement coding/decoding for improving the extension coding/decoding in the second frequency band and according to a second mode of coding/decoding. Also provided are an allocation module implementing the method and a coder and decoder including this module.

Abstract translation: 一种用于改进数字音频信号的分层编码/解码的增强编码/解码中的二进制分配方法，包括第一频带中的核心编码/解码和第二频带中的频带扩展编码/解码。 对于要分配用于增强编码/解码的预定数量的比特，将第一数量的比特分配给用于校正第一频带中的核心编码/解码的编码/解码，并且根据编码/解码的第一模式 并且第二数量的比特被分配给用于改进第二频带中的扩展编码/解码的增强编码/解码，并且根据第二编码/解码模式。 还提供了实现该方法的分配模块和包括该模块的编码器和解码器。

公开(公告)号：US20120185255A1

公开(公告)日：2012-07-19

申请号：US13382786

申请日：2010-06-25

Applicant: David Virette ,  Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

Inventor： David Virette ,  Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

IPC: G10L21/00

CPC classification number: G10L19/002 ,  G10L19/0212 ,  G10L19/038 ,  G10L19/24

Abstract: A method of hierarchical coding of a digital audio frequency input signal into several frequency sub-bands, including a core coding of the input signal according to a first throughput and at least one enhancement coding of higher throughput, of a residual signal. The core coding uses a binary allocation according to an energy criterion. The method includes for the enhancement coding: calculating a frequency-based masking threshold for at least part of the frequency bands processed by the enhancement coding; determining a perceptual importance per frequency sub-band as a function of the masking threshold and as a function of the number of bits allocated for the core coding; binary allocation of bits in the frequency sub-bands processed by the enhancement coding, as a function of the perceptual importance determined; and coding the residual signal according to the bit allocation. Also provided are a decoding method, a coder and a decoder.

Abstract translation: 一种将数字音频输入信号分层编码成若干频率子带的方法，包括根据第一吞吐量的输入信号的核心编码和较高吞吐量的残余信号的至少一个增强编码。 核心编码根据能量标准使用二进制分配。 该方法包括用于增强编码：计算由增强编码处理的至少部分频带的基于频率的掩蔽阈值; 确定每个频率子带的感知重要性作为掩蔽阈值的函数，并且作为分配给核心编码的比特数的函数; 由增强编码处理的频率子带中的位的二进制分配作为确定的感知重要性的函数; 并根据比特分配对残差信号进行编码。 还提供了解码方法，编码器和解码器。

公开(公告)号：US20120185256A1

公开(公告)日：2012-07-19

申请号：US13382794

申请日：2010-06-25

Applicant: David Virette ,  Pierre Berthet

Inventor： David Virette ,  Pierre Berthet

IPC: G10L19/00

CPC classification number: G10L19/24 ,  G10L19/002 ,  G10L19/0212 ,  G10L19/038

Abstract: A method of binary allocation in an enhancement coding/decoding for improving a hierarchical coding/decoding of digital audio signals, including a core coding/decoding in a first frequency band and a band extension coding/decoding in a second frequency band. For a predetermined number of bits to be allocated for the enhancement coding/decoding, a first number of bits is allocated to a coding/decoding for correcting the core coding/decoding in the first frequency band and according to a first mode of coding/decoding and a second number of bits is allocated to an enhancement coding/decoding for improving the extension coding/decoding in the second frequency band and according to a second mode of coding/decoding. Also provided are an allocation module implementing the method and a coder and decoder including this module.

Abstract translation: 一种用于改进数字音频信号的分层编码/解码的增强编码/解码中的二进制分配方法，包括第一频带中的核心编码/解码和第二频带中的频带扩展编码/解码。 对于要分配用于增强编码/解码的预定数量的比特，将第一数量的比特分配给用于校正第一频带中的核心编码/解码的编码/解码，并且根据编码/解码的第一模式 并且第二数量的比特被分配给用于改进第二频带中的扩展编码/解码的增强编码/解码，并且根据第二编码/解码模式。 还提供了实现该方法的分配模块和包括该模块的编码器和解码器。

公开(公告)号：US09218817B2

公开(公告)日：2015-12-22

申请号：US13997446

申请日：2011-12-20

Applicant: Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

Inventor： Stéphane Ragot ,  Balazs Kovesi ,  Pierre Berthet

IPC: G10L19/04 ,  G10L19/12 ,  G10L19/022 ,  G10L19/18 ,  G10L19/02

CPC classification number: G10L19/12 ,  G10L19/0212 ,  G10L19/022 ,  G10L19/04 ,  G10L19/18

Abstract: An encoder and a method for encoding a digital signal are provided. The method includes encoding a preceding frame of samples of the digital signal according to a predictive encoding process, and encoding a current frame of samples of the digital signal according to a transform encoding process. The method is implemented such that a first portion of the current frame is also encoded by predictive encoding that is limited relative to the predictive encoding of the preceding frame by reusing at least one parameter of the predictive encoding of the preceding frame and only encoding the parameters of said first portion of the current frame that are not reused. A decoder and a decoding method are also provided, which correspond to the described encoding method.

Abstract translation: 提供了一种用于编码数字信号的编码器和方法。 该方法包括根据预测编码处理对数字信号的前一帧采样进行编码，并根据变换编码处理对当前数字信号采样帧进行编码。 该方法被实现为使得当前帧的第一部分也通过预测编码进行编码，所述预测编码相对于前一帧的预测编码被限制，通过重用前一帧的预测编码的至少一个参数并且仅对参数进行编码 的当前帧的所述第一部分不被重复使用。 还提供了对应于所述编码方法的解码器和解码方法。

公开(公告)号：US4556966A

公开(公告)日：1985-12-03

申请号：US372333

申请日：1982-04-27

Applicant: Claude Bricot ,  Pierre Berthet ,  Bruno Mertz ,  Jean-Louis Gerard

Inventor： Claude Bricot ,  Pierre Berthet ,  Bruno Mertz ,  Jean-Louis Gerard

IPC: G11B23/36 ,  G11B7/24 ,  G11B19/28 ,  G11B23/42 ,  G11B27/26 ,  G11B27/32 ,  G11B7/00

CPC classification number: G11B19/28 ,  G11B23/42 ,  G11B27/26 ,  G11B27/32 ,  G11B7/24

Abstract: The angular velocity of an information element contained in the precut track of an information carrier disk is controlled by means of a concentric circular ring located internally with respect to the precut track and constituted by mark zones uniformly spaced in angular sectors. A light beam is projected onto the circular ring and the emergent beam is modulated as a function of the mark zones and blank zones which form the circular ring. Errors arising from eccentric displacement of the track can thus be corrected and the rate of travel of information can be controlled in relation to the reading or recording light beam.

Abstract translation: 包含在信息载体盘的预切割轨道中的信息元素的角速度通过位于内部相对于预切割轨道并由角扇区中均匀间隔的标记区域构成的同心圆环来控制。 光束投射到圆环上，并且出射光束作为形成圆形环的标记区域和空白区域的函数被调制。 因此可以校正由于轨道的偏心位移引起的错误，并且可以相对于读取或记录光束来控制信息的行进速度。

公开(公告)号：US20130289981A1

公开(公告)日：2013-10-31

申请号：US13997446

申请日：2011-12-20

Applicant: Stephane Ragot ,  Balazs Kovesi ,  Pierre Berthet

Inventor： Stephane Ragot ,  Balazs Kovesi ,  Pierre Berthet

IPC: G10L19/12

CPC classification number: G10L19/12 ,  G10L19/0212 ,  G10L19/022 ,  G10L19/04 ,  G10L19/18

Abstract: An encoder and a method for encoding a digital signal are provided. The method includes encoding a preceding frame of samples of the digital signal according to a predictive encoding process, and encoding a current frame of samples of the digital signal according to a transform encoding process. The method is implemented such that a first portion of the current frame is also encoded by predictive encoding that is limited relative to the predictive encoding of the preceding frame by reusing at least one parameter of the predictive encoding of the preceding frame and only encoding the parameters of said first portion of the current frame that are not reused. A decoder and a decoding method are also provided, which correspond to the described encoding method.

Abstract translation: 提供了一种用于编码数字信号的编码器和方法。 该方法包括根据预测编码处理对数字信号的前一帧采样进行编码，并根据变换编码处理对当前数字信号采样帧进行编码。 该方法被实现为使得当前帧的第一部分也通过预测编码进行编码，所述预测编码相对于前一帧的预测编码被限制，通过重用前一帧的预测编码的至少一个参数并且仅对参数进行编码 的当前帧的所述第一部分不被重复使用。 还提供了对应于所述编码方法的解码器和解码方法。

公开(公告)号：US4553228A

公开(公告)日：1985-11-12

申请号：US472995

申请日：1983-03-07

Applicant: Jean L. Gerard ,  Claude Bricot ,  Pierre Berthet

Inventor： Jean L. Gerard ,  Claude Bricot ,  Pierre Berthet

IPC: G11B7/00 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B7/095 ,  G11B7/24 ,  G11B27/19 ,  G11B27/30

CPC classification number: G11B7/0901 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/00745 ,  G11B7/0938 ,  G11B7/24

Abstract: A mobile pre-etched data carrier is provided in which the pre-etching is formed by a succession of discrete non continuous elements materializing the mean axis of the tracks. The spatial distribution of these discrete elements may be uniform or not. In a first embodiment, each discrete element is formed by a smooth track section. In a second embodiment, each discrete element comprises several sections defining a particular code. In other preferred variations of the invention, each element comprises, besides a portion centered on the mean axis of the tracks, one or more portions offset with respect to the axis. Finally, each of the pre-etchings may itself be preceded by an additional pre-etching element used for the purpose of synchronization. The tracking device comprises photodetector means, measuring circuits comprising sampler-inhibitors or storage integrator circuits and sampling circuits. A radial tracking error is formed from the evolution of the signals detected during successive passages.

Abstract translation: 提供了一种移动预蚀刻数据载体，其中预蚀刻由一系列离散的非连续元件形成，实现了轨迹的平均轴线。 这些离散元件的空间分布可以是均匀的或不均匀的。 在第一实施例中，每个分立元件由平滑轨道部分形成。 在第二实施例中，每个离散元件包括限定特定代码的几个部分。 在本发明的其它优选变型中，每个元件除了以轨道的平均轴为中心的部分之外还包括相对于轴偏移的一个或多个部分。 最后，每个预蚀刻本身之前可能有一个额外的用于同步目的的预蚀刻元件。 跟踪装置包括光电检测器装置，包括采样器抑制器或存储积分器电路和采样电路的测量电路。 根据连续通路期间检测到的信号的演化形成径向跟踪误差。

公开(公告)号：US08250444B2

公开(公告)日：2012-08-21

申请号：US12253453

申请日：2008-10-17

Applicant: Philippe Le Bars ,  Pierre Berthet

Inventor： Philippe Le Bars ,  Pierre Berthet

IPC: H03M13/00

CPC classification number: H03M13/2957 ,  H03M13/27 ,  H04L45/32 ,  H04W40/02

Abstract: In the field of coding/decoding in telecommunications networks, an error correcting decoder and associated decoding method are adapted to a mesh network.In particular, the system for the decoding of a plurality of coded copies of a data word includes at least a first decoding stage with: a plurality of soft decision decoders, each decoder being arranged for decoding a coded copy received as decoder input, and a graph-based decoder comprising a plurality of nodes, each node of said graph-based decoder receiving the soft output value from a corresponding decoder and the graph-based decoder determining a decoding value of said data word on the basis of said soft output values.

Abstract translation: 在电信网络中的编码/解码领域，纠错解码器和相关联的解码方法适用于网状网络。 特别地，用于解码数据字的多个编码副本的系统至少包括第一解码级，其具有：多个软判决解码器，每个解码器被布置为用于解码作为解码器输入接收的编码副本，以及 基于图形的解码器包括多个节点，所述基于图表的解码器的每个节点从对应的解码器接收软输出值，并且基于图的解码器基于所述软输出值来确定所述数据字的解码值。

公开(公告)号：US4562564A

公开(公告)日：1985-12-31

申请号：US473539

申请日：1983-03-09

Applicant: Claude Bricot ,  Pierre Berthet ,  Jean-Louis Gerard

Inventor： Claude Bricot ,  Pierre Berthet ,  Jean-Louis Gerard

IPC: G11B7/085 ,  G11B7/00 ,  G11B7/004 ,  G11B7/007 ,  G11B7/08 ,  G11B7/09 ,  G11B27/19 ,  G11B27/30

CPC classification number: G11B27/19 ,  G11B27/3027 ,  G11B7/00745 ,  G11B7/0938

Abstract: The process makes it possible to generate on the basis of discrete preetching elements or flags, the radial tracking error and/or focusing error signals. The flags comprise portions displaced with respect to the mean axis of the tracks to be followed. According to a first variant, each track comprises portions displaced on either side of the axis. According to a second variant the flags comprise portions alternately displaced to one and then the other side thereof. In response to the passages of these portions, windows are generated and the pulses supplied by the photodetectors of the interaction of these portions on the focused scan beam are compared between successive windows.

Abstract translation: 该过程使得可以在离散预取元素或标志，径向跟踪误差和/或聚焦误差信号的基础上生成。 标志包括相对于要跟踪的轨道的平均轴线移位的部分。 根据第一变型，每个轨道包括在轴的任一侧上移位的部分。 根据第二变型，标志包括交替地移位到其一侧和另一侧的部分。 响应于这些部分的通道，产生窗口，并且在连续窗口之间比较由光电检测器提供的这些部分在聚焦扫描光束上的相互作用的脉冲。