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1. 发明授权

US08161158B2 Method in a communication system, a communication system and a communication device 有权
标题翻译：通信系统中的方法，通信系统和通信设备
公开(公告)号：US08161158B2
公开(公告)日：2012-04-17
申请号：US10255560
申请日：2002-09-25
申请人： Igor D. Curcio , Miska Hannuksela , Viktor Varsa
发明人： Igor D. Curcio , Miska Hannuksela , Viktor Varsa
IPC分类号： G06F15/16
CPC分类号： H04W28/18 , H04L1/0026
摘要： The present invention relates to a method and a communication system for transmission of multimedia streams. Multimedia streams are transmitted in the communication system from a sending communication device to a receiving communication device at least partly via a wireless communication network. Information about the multimedia stream is transmitted to the receiving communication device comprising at least one parameter of the transmission of the multimedia stream for reservation of network resources. The parameter is the maximum bit rate which is needed for the transmission or the maximum service data unit size to be used in the transmission. It is also possible that both the mentioned parameters will be transmitted as attributes of the session description protocol. In an advantageous embodiment the receiving communication device informs the sending communication device about the QoS profile parameters which the wireless communication network granted for the transmission.
摘要翻译：本发明涉及用于传输多媒体流的方法和通信系统。多媒体流在通信系统中至少部分地经由无线通信网络从发送通信设备发送到接收通信设备。关于多媒体流的信息被发送到包括用于预留网络资源的多媒体流的传输的至少一个参数的接收通信设备。该参数是传输所需的最大比特率或传输中使用的最大服务数据单元大小。所提及的参数也可以作为会话描述协议的属性来传送。在有利的实施例中，接收通信设备向发送通信设备通知无线通信网络授权传输的QoS简档参数。

2. 发明授权

US06741648B2 Apparatus, and associated method, for selecting an encoding rate by which to encode video frames of a video sequence 失效
标题翻译：用于选择对视频序列的视频帧进行编码的编码速率的装置和相关方法
公开(公告)号：US06741648B2
公开(公告)日：2004-05-25
申请号：US09844890
申请日：2001-04-27
申请人： Marta Karczewicz , Viktor Varsa , Bindignavile Srinivas
发明人： Marta Karczewicz , Viktor Varsa , Bindignavile Srinivas
IPC分类号： H04N712
CPC分类号： H04N21/44004 , H04N19/115 , H04N19/126 , H04N19/149 , H04N19/152 , H04N19/172 , H04N19/61 , H04N21/23406 , H04N21/6377 , H04N21/658
摘要： Apparatus, and an associated method, for selecting the encoding bit rate at which an encoder encodes selected video frames of a sequence of video frames at a video sending device. Selection is made to provide a constant-consistency quality level and constant frame rate of display of the video frames at a video receiving device. Selection of the encoding bit rate is made responsive to a targeted frame rate and allowable communication rates upon a communication channel upon which encoded representations of the video frames are to be communicated.
摘要翻译：一种用于选择编码比特率的装置和相关方法，编码比特率在编码器对视频发送装置的视频帧序列的选定视频帧进行编码。进行选择以提供在视频接收设备处的视频帧的不变一致性质量水平和恒定帧率的显示。响应于要在其上传送视频帧的编码表示的通信信道上的目标帧速率和可允许的通信速率来选择编码比特率。

3. 发明授权

US07606928B2 Method and device for controlling receiver buffer fullness level in multimedia streaming 有权
标题翻译：控制多媒体流中接收缓冲区饱和度的方法和装置
公开(公告)号：US07606928B2
公开(公告)日：2009-10-20
申请号：US10395015
申请日：2003-03-21
申请人： Ru-Shang Wang , Viktor Varsa , David Leon , Emre Baris Aksu , Igor Danilo Diego Curcio
发明人： Ru-Shang Wang , Viktor Varsa , David Leon , Emre Baris Aksu , Igor Danilo Diego Curcio
IPC分类号： G06F15/16 , G06F13/00
CPC分类号： H04L65/608 , H04L29/06027 , H04L65/80
摘要： A method to provide to a sender of RTP packets the actual receiver buffer fullness level in a receiver of the RTP packets at a certain time instant represented as remaining playout duration in time. The receiver sends in an RTCP report the sequence number of a selected RTP packet in the receiver buffer and the time difference between the scheduled playout time of this packet and the current time. Based on this timing information, the sender calculates the amount of time it would take for the receiver buffer to empty if the receiver continues to playout at normal speed and no further RTP packets arrive to the receiver buffer. This receiver buffer fullness level information can be used at the sender to adjust the transmission rate and/or nominal playout rate of the RTP packets in order to maintain a targeted receiver buffer fullness level.
摘要翻译：向RTP分组的发送者提供RTP分组的接收机中的实时接收机缓冲器满量级的方法，该接收器在特定时刻即时表示为剩余播出持续时间。接收器在RTCP报告中发送接收缓冲器中选定的RTP分组的序列号以及该分组的预定播放时间与当前时间之间的时间差。基于该定时信息，如果接收机以正常速度继续播放并且没有其他RTP分组到达接收机缓冲器，则发送器计算接收器缓冲器将要花费的时间量。可以在发送器处使用该接收器缓冲器充满度级别信息来调整RTP分组的传输速率和/或标称播放速率，以便维持目标接收机缓冲器充满水平。

4. 发明授权

US07346007B2 Bandwidth adaptation 有权
标题翻译：带宽适配
公开(公告)号：US07346007B2
公开(公告)日：2008-03-18
申请号：US10369098
申请日：2003-02-18
申请人： Igor Danilo Diego Curcio , Miikka Lundan , Emre Baris Aksu , Ru-Shang Wang , Viktor Varsa , David Leon
发明人： Igor Danilo Diego Curcio , Miikka Lundan , Emre Baris Aksu , Ru-Shang Wang , Viktor Varsa , David Leon
IPC分类号： H04L12/64
CPC分类号： H04L65/80 , H04L29/06027 , H04L47/10 , H04L47/14 , H04L47/15 , H04L47/263 , H04L47/70 , H04L47/765 , H04L47/767 , H04L47/801 , H04L47/808 , H04L47/824 , H04L65/1083 , H04L65/4038 , H04L65/608 , H04L69/24 , Y02D50/10
摘要： The invention relates to a method for packet switched streaming of media, such as video and/or audio, from a streaming server (111) to a mobile client device (101) over an air-interface. The method comprises noticing a change in a downlink air-interface bandwidth, sending from the mobile client device (101) to the streaming server (111) a request for adapting streaming server transmission bit rate, receiving the request at the streaming server (111) and adapting the streaming server transmission bit rate in accordance with the request. According to the method, the request indicates to the streaming server (111) a current downlink air-interface bandwidth and that said adapting of the streaming server transmission bit rate is performed in accordance with said current downlink air-interface bandwidth.
摘要翻译：本发明涉及一种用于通过空中接口从流服务器（111）到移动客户端设备（101）的媒体（例如视频和/或音频）的分组交换流传输的方法。该方法包括：注意下行链路空中接口带宽的变化，从移动客户端设备（101）向流式传输服务器（111）发送适应流服务器传输比特率的请求，在流服务器（111）处接收请求，以及根据请求调整流服务器传输比特率。根据该方法，该请求向流服务器（111）指示当前下行链路空中接口带宽，并且根据所述当前下行链路空中接口带宽执行所述流服务器传输比特率的所述适配。

5. 发明授权

US07844727B2 Method and device for proactive rate adaptation signaling 有权
标题翻译：主动速率适应信令的方法和装置
公开(公告)号：US07844727B2
公开(公告)日：2010-11-30
申请号：US10826687
申请日：2004-04-16
申请人： David Leon , Viktor Varsa , Igor Danilo Diego Curcio
发明人： David Leon , Viktor Varsa , Igor Danilo Diego Curcio
IPC分类号： G06F15/16
CPC分类号： H04L12/5602 , H04L65/80
摘要： A method and system for adaptively controlling level of a receiver buffer in a client in a multimedia streaming network. The multimedia streaming network has a server for providing streaming data to the client. The server is responsible for adapting the transmission rate to the reception rate or congestion control, and for adapting the sampling rate to the transmission rate. Thus, the server manages the shift and keeps it within the rate adaptation operating range. The client is responsible for compensating for the packet transfer delay variation, which is also known as network jitter. The client is also responsible for setting parameters of the server rate adaptation operating range. The client chooses and sends the shift parameters to the server, but it is up to the server to adapt its encoding rate or transmission rate when responding to the parameters.
摘要翻译：一种用于在多媒体流网络中自适应地控制客户端中的接收缓冲器的级别的方法和系统。多媒体流网络具有用于向客户端提供流数据的服务器。服务器负责将传输速率调整到接收速率或拥塞控制，并使采样率适应传输速率。因此，服务器管理移动并将其保持在速率适配操作范围内。客户端负责补偿分组传输延迟变化，这也称为网络抖动。客户端还负责设置服务器速率自适应操作范围的参数。客户端选择并发送移动参数给服务器，但由服务器根据参数来调整其编码速率或传输速率。

6. 发明授权

US07693220B2 Transmission of video information 有权
标题翻译：传输视频信息
公开(公告)号：US07693220B2
公开(公告)日：2010-04-06
申请号：US10785426
申请日：2004-02-23
申请人： Ru-Shang Wang , Ragip Kurceren , Viktor Varsa , Keith Miller
发明人： Ru-Shang Wang , Ragip Kurceren , Viktor Varsa , Keith Miller
IPC分类号： H04B1/66 , H04N7/12 , H04N11/02
CPC分类号： H04N21/23424 , H04N19/107 , H04N19/164 , H04N19/172 , H04N19/176 , H04N19/61 , H04N19/65 , H04N19/89 , H04N21/44016
摘要： The present invention relates to a method for transmitting video information, in which a bitstream is formed comprising a set of frames comprising macroblocks. At least one switching frame is formed into the bitstream, macroblocks of the switching frame are arranged into a first and a second group of macroblocks, each macroblock of the first group of macroblocks are encoded by a first encoding method to provide a switching point for continuing the transmission of video information with another bitstream formed from the video information; and macroblocks of the second group of macroblocks are encoded by another encoding method. Errors in transmission of video information are reduced by forming at least one SP-encoded frame by predictively encoding the macroblocks; replacing part of the SP-encoded macroblocks with intra encoded blocks; and transmitting the encoded frame containing both predictively and intra encoded macroblocks instead of the SP-encoded frame.
摘要翻译：本发明涉及一种用于发送视频信息的方法，其中形成包括一组包含宏块的帧的比特流。至少一个切换帧形成到比特流中，切换帧的宏块被布置成第一和第二组宏块，第一组宏块的每个宏块由第一编码方法编码，以提供用于连续的切换点用视频信息形成的另一比特流传输视频信息; 并且第二组宏块的宏块由另一编码方法编码。通过对宏块进行预测编码形成至少一个SP编码帧来减少视频信息传输中的错误; 用帧内编码块代替SP编码的宏块的一部分; 并且发送包含预测和帧内编码宏块的编码帧，而不是SP编码帧。

7. 发明授权

US07558869B2 Rate adaptation method and device in multimedia streaming 有权
标题翻译：多媒体流中的速率适配方法和设备
公开(公告)号：US07558869B2
公开(公告)日：2009-07-07
申请号：US10778899
申请日：2004-02-13
申请人： David Leon , Viktor Varsa , Ru-Shang Wang , Igor Danilo Diego Curcio , Emre Baris Aksu
发明人： David Leon , Viktor Varsa , Ru-Shang Wang , Igor Danilo Diego Curcio , Emre Baris Aksu
IPC分类号： G06F15/16 , H04L12/28
CPC分类号： H04L47/10 , H04L29/06027 , H04L47/263 , H04L47/6255 , H04L49/9078 , H04L65/4084 , H04L65/4092 , H04L65/607 , H04L65/608 , H04L65/80 , H04L67/322 , H04L67/42 , H04L69/24 , H04L69/329 , H04N21/2401 , H04N21/2662 , H04N21/41407 , H04N21/44004 , H04N21/6125 , H04N21/6131 , H04N21/6332 , H04N21/6373 , H04N21/6375 , H04N21/6377 , H04N21/643 , H04N21/6437 , H04N21/658
摘要： A method for the client in a multimedia streaming network to control the receiver buffer fullness by way of effectively shifting the transmission clock in the server who provides streaming data to the client. In order to avoid buffer underflow or overflow, the client sends a message to the server requesting the shift of the transmission clock either forward or backward depending on whether the client wants to increase or decrease the receiver buffer. Based on the message, the server adjusts the data transmission amount by effectively shifting its transmission clock. The request from the client can be sent through RTCP or RTSP.
摘要翻译：一种用于多媒体流网络中的客户端的方法，用于通过有效地将提供流数据的服务器中的传输时钟转移到客户端来控制接收器缓冲器充满度。为了避免缓冲器下溢或溢出，客户端向服务器发送请求向前或向后移动传输时钟的消息，这取决于客户端是否希望增加或减少接收缓冲区。基于该消息，服务器通过有效地移动其传输时钟来调整数据传输量。来自客户端的请求可以通过RTCP或RTSP发送。

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