公开(公告)号：US20050228651A1

公开(公告)日：2005-10-13

申请号：US10816466

申请日：2004-03-31

申请人： Tian Wang ,  Hosam Khalil ,  Kazuhito Koishida ,  Wei-Ge Chen ,  Mu Han

发明人： Tian Wang ,  Hosam Khalil ,  Kazuhito Koishida ,  Wei-Ge Chen ,  Mu Han

IPC分类号： G10L11/06 ,  G10L19/08

CPC分类号： G10L19/08 ,  G10L19/005 ,  G10L19/22

摘要： Various strategies for rate/quality control and loss resiliency in an audio codec are described. The various strategies can be used in combination or independently. For example, a real-time speech codec uses intra frame coding/decoding, adaptive multi-mode forward error correction [“FEC”], and rate/quality control techniques. Intra frames help a decoder recover quickly from packet losses, while compression efficiency is still emphasized with predicted frames. Various strategies for inserting intra frames and signaling intra/predicted frames are described. With the adaptive multi-mode FEC, an encoder adaptively selects between multiple modes to efficiently and quickly provide a level of FEC that takes into account the bandwidth currently available for FEC. The FEC information itself may be predictively encoded and decoded relative to primary encoded information. Various rate/quality and FEC control strategies allow additional adaptation to available bandwidth and network conditions.

摘要翻译： 描述了音频编解码器中的速率/质量控制和丢失弹性的各种策略。 各种策略可以组合使用或独立使用。 例如，实时语音编解码器使用帧内编码/解码，自适应多模式前向纠错[“FEC”]和速率/质量控制技术。 帧内帧帮助解码器从分组丢失中快速恢复，而预测帧仍然强调压缩效率。 描述了用于插入帧内和信令帧内/预测帧的各种策略。 利用自适应多模式FEC，编码器在多种模式之间自适应地选择以有效且快速地提供考虑到当前可用于FEC的带宽的FEC级别。 FEC信息本身可以相对于主编码信息进行预测编码和解码。 各种速率/质量和FEC控制策略允许对可用带宽和网络条件进行额外的调整。

公开(公告)号：US20080069127A1

公开(公告)日：2008-03-20

申请号：US11522268

申请日：2006-09-15

申请人： Hosam A. Khalil ,  Guo-Wei Shieh ,  Tian Wang

发明人： Hosam A. Khalil ,  Guo-Wei Shieh ,  Tian Wang

IPC分类号： H04L12/56 ,  H04J3/06

CPC分类号： H04J3/062 ,  H04J3/0626 ,  H04J3/0632 ,  H04L47/283 ,  H04L47/30

摘要： A method of compensating for jitter in a packet stream is described. The method comprises placing undecoded frames extracted from packets in the packet stream into a jitter buffer while decoding frames from the jitter buffer and placing the decoded frames into a sample buffer at a rate determined using an average playout delay. The average playout delay is the running average of the playout delay calculated for each packet as each packet becomes available. The playout delay for each packet is the sum of a sample buffer delay and a jitter buffer delay. As each packet is received, the average playout delay is adjusted based on a comparison of the playout delay associated with the received packet to the current average playout delay.

摘要翻译： 描述了补偿分组流中的抖动的方法。 该方法包括将从分组流中的分组提取的未解码的帧放入抖动缓冲器中，同时从抖动缓冲器解码帧并将解码的帧以使用平均播出延迟确定的速率放置到采样缓冲器中。 平均播出延迟是每个分组变得可用时为每个分组计算的播出延迟的运行平均值。 每个数据包的播出延迟是采样缓冲区延迟和抖动缓冲区延迟的总和。 当接收到每个分组时，基于与接收分组相关联的播放延迟与当前平均播放延迟的比较来调整平均播出延迟。

公开(公告)号：US20080059161A1

公开(公告)日：2008-03-06

申请号：US11470577

申请日：2006-09-06

申请人： Hosam A. Khalil ,  Tian Wang

发明人： Hosam A. Khalil ,  Tian Wang

IPC分类号： G10L21/02

CPC分类号： G10L19/012

摘要： This document describes tools capable of enabling and/or adaptively generating comfort noise. The tools may do so by receiving some background noise, analyzing that noise, and generating comfort noise based on the received background noise. In some embodiments, for example, the tools build and continuously adapt a history based on segments of background noise as they are received from the sender. The tools may use this history to generate comfort noise that is pleasing, relatively accurate, and/or dynamically changing responsive to changes in a speaker's background noise.

摘要翻译： 本文档描述了能够启用和/或自适应地产生舒适噪声的工具。 这些工具可以通过接收一些背景噪声，分析噪声和基于接收的背景噪声产生舒适噪声来实现。 在一些实施例中，例如，当它们从发送者接收时，工具构建并连续地适应基于背景噪声的段的历史。 这些工具可以使用这种历史来产生响应于扬声器背景噪声的变化而令人愉快，相对准确和/或动态改变的舒适噪声。

公开(公告)号：US08483243B2

公开(公告)日：2013-07-09

申请号：US11522268

申请日：2006-09-15

申请人： Hosam A Khalil ,  Guo-Wei Shieh ,  Tian Wang

发明人： Hosam A Khalil ,  Guo-Wei Shieh ,  Tian Wang

IPC分类号： H04L12/28 ,  H04J3/06

CPC分类号： H04J3/062 ,  H04J3/0626 ,  H04J3/0632 ,  H04L47/283 ,  H04L47/30

摘要： A method of compensating for jitter in a packet stream is described. The method comprises placing undecoded frames extracted from packets in the packet stream into a jitter buffer while decoding frames from the jitter buffer and placing the decoded frames into a sample buffer at a rate determined using an average playout delay. The average playout delay is the running average of the playout delay calculated for each packet as each packet becomes available. The playout delay for each packet is the sum of a sample buffer delay and a jitter buffer delay. As each packet is received, the average playout delay is adjusted based on a comparison of the playout delay associated with the received packet to the current average playout delay.

摘要翻译： 描述了补偿分组流中的抖动的方法。 该方法包括将从分组流中的分组提取的未解码的帧放入抖动缓冲器中，同时从抖动缓冲器解码帧并将解码的帧以使用平均播出延迟确定的速率放置到采样缓冲器中。 平均播出延迟是每个分组变得可用时为每个分组计算的播出延迟的运行平均值。 每个数据包的播出延迟是采样缓冲区延迟和抖动缓冲区延迟的总和。 当接收到每个分组时，基于与接收分组相关联的播放延迟与当前平均播放延迟的比较来调整平均播出延迟。

公开(公告)号：US20050075869A1

公开(公告)日：2005-04-07

申请号：US10894854

申请日：2004-07-20

申请人： Allen Gersho ,  Vladimir Cuperman ,  Tian Wang ,  Kazuhito Koishida

发明人： Allen Gersho ,  Vladimir Cuperman ,  Tian Wang ,  Kazuhito Koishida

IPC分类号： G10L19/02 ,  G10L19/00 ,  G10L19/04 ,  G10L19/08 ,  G10L19/14 ,  G10L11/06

CPC分类号： G10L19/173 ,  G10L19/087

摘要： An enhanced_low-bit rate parametric voice coder that groups a number of frames from an underlying frame-based vocoder, such as MELP, into a superframe structure. Parameters are extracted from the group of underlying frames and quantized into the superframe which allows the bit rate of the underlying coding to be reduced without increasing the distortion. The speech data coded in the superframe structure can then be directly synthesized to speech or may be transcoded to a format so that an underlying frame-based vocoder performs the synthesis. The superframe structure includes additional error detection and correction data to reduce the distortion caused by the communication of bit errors.

摘要翻译： 增强型低比特率参数语音编码器，其将来自诸如MELP的基于帧的声码器的多个帧分组成超帧结构。 从底层帧中提取参数并量化到超帧中，这允许在不增加失真的情况下减少底层编码的比特率。 然后，可以将在超帧结构中编码的语音数据直接合成为语音，或者将其转码为格式，使得基础的基于帧的声码器进行合成。 超帧结构包括附加的错误检测和校正数据，以减少由位错误的通信引起的失真。

公开(公告)号：US07286982B2

公开(公告)日：2007-10-23

申请号：US10894854

申请日：2004-07-20

申请人： Allen Gersho ,  Vladimir Cuperman ,  Tian Wang ,  Kazuhito Koishida

发明人： Allen Gersho ,  Vladimir Cuperman ,  Tian Wang ,  Kazuhito Koishida

IPC分类号： G10L19/12

CPC分类号： G10L19/173 ,  G10L19/087

摘要： An enhanced low-bit rate parametric voice coder that groups a number of frames from an underlying frame-based vocoder, such as MELP, into a superframe structure. Parameters are extracted from the group of underlying frames and quantized into the superframe which allows the bit rate of the underlying coding to be reduced without increasing the distortion. The speech data coded in the superframe structure can then be directly synthesized to speech or may be transcoded to a format so that an underlying frame-based vocoder performs the synthesis. The superframe structure includes additional error detection and correction data to reduce the distortion caused by the communication of bit errors.

摘要翻译： 一种增强的低比特率参数语音编码器，其将来自基础帧的声码器（例如MELP）的多个帧分组成超帧结构。 从底层帧中提取参数并量化到超帧中，这允许在不增加失真的情况下减少底层编码的比特率。 然后，可以将在超帧结构中编码的语音数据直接合成为语音，或者将其转码为格式，使得基础的基于帧的声码器进行合成。 超帧结构包括附加的错误检测和校正数据，以减少由位错误的通信引起的失真。

公开(公告)号：US06647366B2

公开(公告)日：2003-11-11

申请号：US10032642

申请日：2001-12-28

申请人： Tian Wang ,  Kazuhito Koishida ,  Vladimir Cuperman

发明人： Tian Wang ,  Kazuhito Koishida ,  Vladimir Cuperman

IPC分类号： G10L1900

CPC分类号： G10L19/22

摘要： A method and a system are provided for controlling the coding rates of a multimode coding system with respect to a sequence of input audio signal frames. The method eliminates or minimizes the overflow and underflow of a bit-stream buffer maintained by the coding system for temporarily recording bit-stream data prior to transmission or storage.

摘要翻译： 提供了一种用于控制多模式编码系统相对于输入音频信号帧序列的编码速率的方法和系统。 该方法消除或最小化由编码系统维护的位流缓冲器的溢出和下溢，以在传输或存储之前临时记录位流数据。

公开(公告)号：US07315815B1

公开(公告)日：2008-01-01

申请号：US09401068

申请日：1999-09-22

申请人： Allen Gersho ,  Vladimir Cuperman ,  Tian Wang ,  Kazuhito Koishida

发明人： Allen Gersho ,  Vladimir Cuperman ,  Tian Wang ,  Kazuhito Koishida

IPC分类号： G10L19/12

CPC分类号： G10L19/173 ,  G10L19/087

摘要： An enhanced low-bit rate parametric voice coder that groups a number of frames from an underlying frame-based vocoder, such as MELP, into a superframe structure. Parameters are extracted from the group of underlying frames and quantized into the superframe which allows the bit rate of the underlying coding to be reduced without increasing the distortion. The speech data coded in the superframe structure can then be directly synthesized to speech or may be transcoded to a format so that an underlying frame-based vocoder performs the synthesis. The superframe structure includes additional error detection and correction data to reduce the distortion caused by the communication of bit errors.

摘要翻译： 一种增强的低比特率参数语音编码器，其将来自基础帧的声码器（例如MELP）的多个帧分组成超帧结构。 从底层帧中提取参数并量化到超帧中，这允许在不增加失真的情况下减少底层编码的比特率。 然后，可以将在超帧结构中编码的语音数据直接合成为语音，或者将其转码为格式，使得基础的基于帧的声码器进行合成。 超帧结构包括附加的错误检测和校正数据，以减少由位错误的通信引起的失真。

公开(公告)号：US20050182922A1

公开(公告)日：2005-08-18

申请号：US11061396

申请日：2005-02-18

申请人： Xiao Guo ,  Zhe Wang ,  Tian Wang ,  Hui Su

发明人： Xiao Guo ,  Zhe Wang ,  Tian Wang ,  Hui Su

IPC分类号： G06F9/00 ,  G06F9/445 ,  G06F9/48 ,  G06F15/76

CPC分类号： G06F9/4843 ,  G06F9/441

摘要： Computer systems in which at least two operating systems coexist independently from each other, and that swap between the operating systems. Provides methods to have at least two operating systems coexist independently of each other and swap the operating systems. A computer system includes a memory allocation component to be called by a power-on self test (POST) routine in order to allocate RAM for the operating systems when the computer system starts up, and backup and restore component to be called by a suspension routine in order to backup and restore the data specific to the operating systems, wherein each of the operating systems can transfer itself to the memory area belonging to itself, turn an allocated memory area into a physical RAM, and call the suspension routine to swap to other operating systems by setting swap parameters. The computer system can swap between operating systems easily and conveniently.

摘要翻译： 其中至少两个操作系统彼此独立共存并且在操作系统之间交换的计算机系统。 提供使至少两个操作系统彼此独立并交换操作系统的方法。 计算机系统包括通过开机自检（POST）程序调用的内存分配组件，以便在计算机系统启动时为操作系统分配RAM，并通过暂停程序备份和恢复要调用的组件 为了备份和恢复特定于操作系统的数据，其中每个操作系统可以将自身传送到属于其自身的存储区域，将分配的存储区域转换成物理RAM，并调用暂停例程以交换到其他 操作系统通过设置交换参数。 计算机系统可以方便地在操作系统之间进行交换。

公开(公告)号：US08737060B2

公开(公告)日：2014-05-27

申请号：US13427911

申请日：2012-03-23

申请人： Hong-Zhi Sun ,  Tian Wang

发明人： Hong-Zhi Sun ,  Tian Wang

IPC分类号： G06F1/20 ,  H05K5/00

CPC分类号： G06F1/20

摘要： A computer system includes a computer case, a receiving tray, and a bracket. The computer case includes a front plate with a plurality of air intakes and a first side plate. The receiving tray includes a retaining wall. The bracket includes a first mounting plate and a second mounting plate. A plurality of first through hole is defined in the first mounting plate, and a plurality of second through hole is defined in the second mounting plate. The airflow guiding duct includes a first guiding plate and a second guiding plate. The first guiding plate is located between the front plate and the first mounting plate, the second guiding plate is located between the bracket and the first side plate; the plurality of air intakes, the airflow guiding duct, the plurality of first through hole second through hole together form a path for the air to flow.

摘要翻译： 计算机系统包括计算机外壳，接收托盘和支架。 计算机外壳包括具有多个进气口的前板和第一侧板。 接收托盘包括挡土墙。 支架包括第一安装板和第二安装板。 多个第一通孔被限定在第一安装板中，并且多个第二通孔被限定在第二安装板中。 气流引导管包括第一引导板和第二引导板。 第一引导板位于前板和第一安装板之间，第二引导板位于支架和第一侧板之间; 多个进气口，气流引导管道，多个第一通孔第二通孔一起形成用于空气流动的路径。