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1. 发明授权

US06757654B1 Forward error correction in speech coding 有权
标题翻译：语音编码中的前向纠错
公开(公告)号：US06757654B1
公开(公告)日：2004-06-29
申请号：US09569312
申请日：2000-05-11
申请人： Magnus Westerlund , Anders Nohlgren , Jonas Svedberg , Anders Uvliden , Jim Sundqvist
发明人： Magnus Westerlund , Anders Nohlgren , Jonas Svedberg , Anders Uvliden , Jim Sundqvist
IPC分类号： G10L1302
CPC分类号： G10L19/005
摘要： An improved forward error correction (FEC) technique for coding speech data provides an encoder module which primary-encodes an input speech signal using a primary synthesis model to produce primary-encoded data, and redundant-encodes the input speech signal using a redundant synthesis model to produce redundant-encoded data. A packetizer combines the primary-encoded data and the redundant-encoded data into a series of packets and transmits the packets over a packet-based network, such as an Internet Protocol (IP) network. A decoding module primary-decodes the packets using the primary synthesis model, and redundant-decodes the packets using the redundant synthesis model. The technique provides interaction between the primary synthesis model and the redundant synthesis model during and after decoding to improve the quality of a synthesized output speech signal. Such “interaction,” for instance, may take the form of updating states in one model using the other model.
摘要翻译：用于编码语音数据的改进的前向纠错（FEC）技术提供了一种编码器模块，其使用主要合成模型对输入语音信号进行一次编码以产生初始编码数据，并且使用冗余合成模型对输入语音信号进行冗余编码以产生冗余编码数据。分组器将主编码数据和冗余编码数据组合成一系列分组，并通过诸如因特网协议（IP）网络的基于分组的网络传送分组。解码模块使用主合成模型对分组进行主要解码，并使用冗余合成模型对分组进行冗余解码。该技术在解码期间和之后提供主要合成模型和冗余合成模型之间的交互以提高合成输出语音信号的质量。例如，这种“交互”可以采用其他模型在一个模型中更新状态的形式。

2. 发明申请

US20070206645A1 Method of dynamically adapting the size of a jitter buffer 审中-公开
标题翻译：动态调整抖动缓冲区大小的方法
公开(公告)号：US20070206645A1
公开(公告)日：2007-09-06
申请号：US11745210
申请日：2007-05-07
申请人： Jim Sundqvist , Hakan Lennestal , Anders Nohlgren , Morgan Lindqvist , Wei Wang
发明人： Jim Sundqvist , Hakan Lennestal , Anders Nohlgren , Morgan Lindqvist , Wei Wang
IPC分类号： H04J3/06
CPC分类号： H04L12/6418 , H04L2012/6472 , H04L2012/6481 , H04L2012/6489
摘要： The present invention relates to a receiver system in a communication system supporting packet-based communicatior (e.g., an IP-network), including a receiver, speech decoder (40) and a jitter buffer (20) for handling delay variations in the reception of a speech signal consisting of packets containing frames with encoded speech. A jitter buffer controller (50) is provided for keeping information about the functional size of the jitter buffer (20) and for providing the speech decoder (40) with control information, such that the speech decoder (40), based on that information. provides a dynamic adaptation of the size of the jitter buffer (20) using the received encoded, packetized speech signal. The invention also relates to a method of adapting the functional size of the jitter buffer of a receiver system.
摘要翻译：本发明涉及支持基于分组的通信（例如，IP网络）的通信系统中的接收机系统，包括接收机，语音解码器（40）和抖动缓冲器（20），用于处理接收机的接收中的延迟变化由包含编码语音的帧的分组组成的语音信号。提供抖动缓冲器控制器（50），用于保持关于抖动缓冲器（20）的功能大小的信息，并提供语音解码器（40）的控制信息，使得语音解码器（40）基于该信息。使用所接收的编码的分组语音信号来提供抖动缓冲器（20）的大小的动态适应。本发明还涉及一种适应接收机系统的抖动缓冲器的功能大小的方法。

3. 发明授权

US06873954B1 Method and apparatus in a telecommunications system 有权
标题翻译：电信系统中的方法和装置
公开(公告)号：US06873954B1
公开(公告)日：2005-03-29
申请号：US09655326
申请日：2000-09-05
申请人： Jim Sundqvist , Tomas Frankkila , Anders Nohlgren
发明人： Jim Sundqvist , Tomas Frankkila , Anders Nohlgren
IPC分类号： H04J3/06 , G10L13/02
CPC分类号： H04J3/0632
摘要： Audio artifacts due to overrun or underrun in a playout buffer caused by the sampling rates at a sending and receiving side not being at the same rate are reduced. An LPC-residual is modified on a sample-by-sample basis. The LPC-residual block, which includes N samples, is converted to a block comprising N+1 or N−1 samples. A sample rate controller decides whether samples should be added to or removed from the LPC-residual. The exact position at which to add respective remove samples is either chosen arbitrarily or found by searching for low energy segments in the LPC-residual. A speech synthesiser module then reproduces the speech. By using the proposed sample rate conversion method the playout buffer can be continuously controlled. Furthermore, since the method works on a sample-by-sample basis the buffer can be kept to a minimum and hence no extra delay is introduced.
摘要翻译：由于发送和接收侧的采样率不在同一速率引起的播放缓冲器中的超载或欠载的音频伪影减少。 LPC-残差在逐个样本的基础上修改。包括N个采样的LPC残差块被转换为包括N + 1或N-1个采样的块。采样率控制器决定是否应将样本添加到LPC残差中或从LPC残差中去除。添加相应去除样本的确切位置是任意选择的或通过搜索LPC残差中的低能量段来找到。语音合成器模块然后再现语音。通过使用提出的采样率转换方法，可以连续控制播放缓冲器。此外，由于该方法在逐个采样的基础上工作，因此缓冲器可以保持最小，因此不会引入额外的延迟。

4. 发明授权

US06870876B1 Method for sending information in a telecommunication system 失效
标题翻译：在电信系统中发送信息的方法
公开(公告)号：US06870876B1
公开(公告)日：2005-03-22
申请号：US09612132
申请日：2000-07-07
申请人： Anders Nohlgren , Jim Sundqvist
发明人： Anders Nohlgren , Jim Sundqvist
IPC分类号： H04L29/08 , H04B14/04 , H04J3/06 , H04L7/00 , H04L12/64 , H04Q11/04 , H04B1/38 , H04L5/16
CPC分类号： H04L12/64 , H04J3/0632
摘要： The invention is concerned with a method and an apparatus, wherein information data is sent between at least two transceivers in a telecommunication system. The information data is transmitted from the sender of a transceiver to the receiver of one or more other transceivers in form of digital signals having a given sampling frequency. The signals are played out by the receiver in a controlled way. The invention is mainly characterized by estimation of the sender's sampling rate at the sending side of a transceiver, transmitting the estimation to the receiving side of an another transceiver, and controlling the playout of the information data at the receiving side by means of the sampling rate estimated at the sending side to avoid delays and/or interrupts in the presentation. The invention is especially suitable in connection with packet based networks wherein the information data is sent between the transceivers in the telecommunication system in form of packet data frames, such as audio frames.
摘要翻译：本发明涉及一种方法和装置，其中信息数据在电信系统中的至少两个收发器之间发送。信息数据从收发器的发送器以具有给定采样频率的数字信号的形式发送到一个或多个其他收发器的接收器。接收机以受控的方式播放信号。本发明的主要特征在于估计收发机发送侧的发送者采样率，将估计发送到另一收发机的接收侧，并通过采样率控制接收侧信息数据的播出估计在发送端避免演示中的延迟和/或中断。本发明特别适用于基于分组的网络，其中以诸如音频帧的分组数据帧的形式在电信系统中的收发机之间发送信息数据。

5. 发明授权

US07246057B1 System for handling variations in the reception of a speech signal consisting of packets 有权
标题翻译：用于处理由分组组成的语音信号的接收变化的系统
公开(公告)号：US07246057B1
公开(公告)日：2007-07-17
申请号：US10296859
申请日：2000-05-31
申请人： Jim Sundqvist , Håkan Lennestål , Anders Nohlgren , Morgan Lindqvist , Wei Wang
发明人： Jim Sundqvist , Håkan Lennestål , Anders Nohlgren , Morgan Lindqvist , Wei Wang
IPC分类号： G10L19/12
CPC分类号： H04L12/6418 , H04L2012/6472 , H04L2012/6481 , H04L2012/6489
摘要： The present invention relates to a receiver system in a communication system supporting packet-based communication (e.g., an IP-network), including a receiver, speech decoder and a jitter buffer for handling delay variations in the reception of a speech signal consisting of packets containing frames with encoded speech. A jitter buffer controller is provided for keeping information about the functional size of the jitter buffer and for providing the speech decoder with control information, such that the speech decoder, based on that information, provides a dynamic adaptation of the size of the jitter buffer using the received encoded, packetized speech signal. The invention also relates to a method of adapting the function size of the jitter buffer of a receiver system.
摘要翻译：本发明涉及一种支持基于分组的通信（例如，IP网络）的通信系统中的接收机系统，包括接收机，语音解码器和抖动缓冲器，用于处理由包分组的语音信号的接收中的延迟变化包含编码语音的帧。抖动缓冲器控制器被提供用于保持关于抖动缓冲器的功能大小的信息，并且为语音解码器提供控制信息，使得语音解码器基于该信息，提供抖动缓冲器的大小的动态适应接收的编码的分组语音信号。本发明还涉及一种适配接收机系统的抖动缓冲器的功能大小的方法。

6. 发明申请

US20110058520A1 METHOD, APPARATUS AND COMPUTER PROGRAM FOR SUPPORTING A SESSION IDENTIFIER IN CASE OF A TRANSFER BETWEEN DIFFERENT RADIO ACCESS NETWORKS 有权
标题翻译：方法，设备和计算机程序，用于支持不同无线电接入网络之间转移的会议标识符
公开(公告)号：US20110058520A1
公开(公告)日：2011-03-10
申请号：US12989085
申请日：2008-04-24
申请人： Ralf Keller , Karl-Peter Ranke , Anders Nohlgren
发明人： Ralf Keller , Karl-Peter Ranke , Anders Nohlgren
IPC分类号： H04W4/00
CPC分类号： H04W76/11 , H04L65/1016 , H04L65/1083 , H04W36/0033 , H04W80/10
摘要： A method and application server for supporting a communication established between a first mobile terminal towards a telecommunications network that includes first and second radio access networks. When a session setup is initiated with respect to the first mobile terminal, the application server receives a session identifier. The application server enters the identifier into an identifier list comprising one or more identifiers for identifying sessions with respect to the first mobile terminal. If the application server receives an indication of a session transfer from the first radio access network to the second radio access network, the application server provides the identifier list to the second radio access network in response to the indication.
摘要翻译：一种方法和应用服务器，用于支持在朝向包括第一和第二无线电接入网络的电信网络的第一移动终端之间建立的通信。当相对于第一移动终端发起会话建立时，应用服务器接收会话标识符。应用服务器将标识符输入到包括用于标识关于第一移动终端的会话的一个或多个标识符的标识符列表。如果应用服务器接收到从第一无线电接入网络到第二无线电接入网络的会话传送的指示，则应用服务器响应于该指示向第二无线电接入网络提供标识符列表。

7. 发明申请

US20070266122A1 Multimedia Session Management 有权
标题翻译：多媒体会话管理
公开(公告)号：US20070266122A1
公开(公告)日：2007-11-15
申请号：US11666891
申请日：2005-11-24
申请人： Torbjorn Einarsson , Anders Nohlgren , Magnus Westerlund , Magnus Andersson
发明人： Torbjorn Einarsson , Anders Nohlgren , Magnus Westerlund , Magnus Andersson
IPC分类号： G06F15/177
CPC分类号： H04N21/6408 , H04N21/4383 , H04N21/4384 , H04N21/643
摘要： A multimedia provider (100) generates, based on a request for a media channel from a user terminal (10), a session set-up description that is returned to the user terminal (10). The description defines, when processed in the terminal (10), a session window (20) that is displayed on a screen (12) of the terminal and comprises a region (22) for displaying media data of a requested channel and a channel region (24) comprising information on alternative available media channels. The description also defines a binding between user inputs (14) of the terminal (10) and identifiers of the alternative channels. The set-up description allows for a user-friendly channel switch by automatically transmitting a channel switch request to the multimedia provider (100) upon a triggering of the user input (14) that is associated with the identifier of the requested media channel. The description, thus, provides a visually appealing graphical interface and simultaneously allows for a user-friendly media channel switch.
摘要翻译：多媒体提供者（100）根据来自用户终端（10）的对媒体频道的请求生成返回给用户终端（10）的会话建立说明。该描述定义了在终端（10）中处理的会话窗口（20），其显示在终端的屏幕（12）上，并且包括用于显示所请求的频道的媒体数据的区域（22）和信道区域（24）包括关于替代可用媒体信道的信息。该描述还定义了终端（10）的用户输入（14）和替代频道的标识符之间的绑定。所述设置描述允许在触发与所请求的媒体信道的标识符相关联的用户输入（14）时，自动向多媒体提供商（100）发送频道切换请求，从而进行用户友好的频道切换。因此，该描述提供了视觉吸引人的图形界面，同时允许用户友好的媒体频道切换。

8. 发明授权

US09003041B2 Multimedia session management 有权
标题翻译：多媒体会话管理
公开(公告)号：US09003041B2
公开(公告)日：2015-04-07
申请号：US11666891
申请日：2005-11-24
申请人： Torbjörn Einarsson , Anders Nohlgren , Magnus Westerlund , Magnus Andersson
发明人： Torbjörn Einarsson , Anders Nohlgren , Magnus Westerlund , Magnus Andersson
IPC分类号： G06F15/16 , H04N21/6408 , H04N21/438 , H04N21/643
CPC分类号： H04N21/6408 , H04N21/4383 , H04N21/4384 , H04N21/643
摘要： A multimedia provider (100) generates, based on a request for a media channel from a user terminal (10), a session set-up description that is returned to the user terminal (10). The description defines, when processed in the terminal (10), a session window (20) that is displayed on a screen (12) of the terminal and comprises a region (22) for displaying media data of a requested channel and a channel region (24) comprising information on alternative available media channels. The description also defines a binding between user inputs (14) of the terminal (10) and identifiers of the alternative channels. The set-up description allows for a user-friendly channel switch by automatically transmitting a channel switch request to the multimedia provider (100) upon a triggering of the user input (14) that is associated with the identifier of the requested media channel. The description, thus, provides a visually appealing graphical interface and simultaneously allows for a user-friendly media channel switch.
摘要翻译：多媒体提供者（100）根据来自用户终端（10）的对媒体频道的请求生成返回给用户终端（10）的会话建立说明。该描述定义了在终端（10）中处理的会话窗口（20），其显示在终端的屏幕（12）上，并且包括用于显示所请求的频道的媒体数据的区域（22）和信道区域（24）包括关于替代可用媒体信道的信息。该描述还定义了终端（10）的用户输入（14）和替代频道的标识符之间的绑定。所述设置描述允许在触发与所请求的媒体信道的标识符相关联的用户输入（14）时，自动向多媒体提供商（100）发送频道切换请求，从而进行用户友好的频道切换。因此，该描述提供了视觉吸引人的图形界面，同时允许用户友好的媒体频道切换。

9. 发明授权

US08948127B2 Method, apparatus and computer program for supporting a session identifier in case of a transfer between different radio access networks 有权
标题翻译：用于在不同无线电接入网络之间传输的情况下支持会话标识符的方法，装置和计算机程序
公开(公告)号：US08948127B2
公开(公告)日：2015-02-03
申请号：US12989085
申请日：2009-04-24
申请人： Ralf Keller , Karl-Peter Ranke , Anders Nohlgren
发明人： Ralf Keller , Karl-Peter Ranke , Anders Nohlgren
IPC分类号： H04W4/00 , H04W76/02 , H04L29/06 , H04W36/00 , H04W80/10
CPC分类号： H04W76/021 , H04L65/1016 , H04L65/1083 , H04W36/0033 , H04W76/11 , H04W80/10
摘要： A method and application server for supporting a communication established between a first mobile terminal towards a telecommunications network that includes first and second radio access networks. When a session setup is initiated with respect to the first mobile terminal, the application server receives a session identifier. The application server enters the identifier into an identifier list comprising one or more identifiers for identifying sessions with respect to the first mobile terminal. If the application server receives an indication of a session transfer from the first radio access network to the second radio access network, the application server provides the identifier list to the second radio access network in response to the indication.
摘要翻译：一种方法和应用服务器，用于支持在朝向包括第一和第二无线电接入网络的电信网络的第一移动终端之间建立的通信。当相对于第一移动终端发起会话建立时，应用服务器接收会话标识符。应用服务器将标识符输入到包括用于标识关于第一移动终端的会话的一个或多个标识符的标识符列表。如果应用服务器接收到从第一无线电接入网络到第二无线电接入网络的会话传送的指示，则应用服务器响应于该指示向第二无线电接入网络提供标识符列表。

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