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公开(公告)号：US07817551B2
公开(公告)日：2010-10-19
申请号：US10491009
申请日：2003-04-01
申请人： Daiji Ido , Carsten Burmeister , Jose Luis Rey
发明人： Daiji Ido , Carsten Burmeister , Jose Luis Rey
IPC分类号： H04J1/16
CPC分类号： H04W28/22 , H04L29/06027 , H04L47/2416 , H04L47/263 , H04L47/29 , H04L65/80 , H04W4/00 , H04W28/14
摘要： A data reception apparatus has a data reception section that receives data sent from a server through a communication link. A storage section stores the received data, and a play back section plays back the stored data. A requesting section requests the server to send data, corresponding to a certain period, at a rate equal to or more than a normal rate and lower than a rate set up by the communication link.
摘要翻译： 数据接收装置具有通过通信链路接收从服务器发送的数据的数据接收部。 存储部分存储所接收的数据，并且回放部分重放存储的数据。 请求部分请求服务器以等于或大于正常速率并且低于由通信链路建立的速率的速率发送对应于一定周期的数据。
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公开(公告)号：US07392322B2
公开(公告)日：2008-06-24
申请号：US10490338
申请日：2003-04-01
申请人： Daiji Ido , Carsten Burmeister , Jose Luis Rey
发明人： Daiji Ido , Carsten Burmeister , Jose Luis Rey
IPC分类号： G06F15/16
CPC分类号： H04L47/263 , H04L47/10 , H04L47/14 , H04L47/30
摘要： The radio control section 205 notifies a transmission rate that can be currently set up out of the radio channel transmission rates to the transmission rate decision section 207. The buffer monitoring section 208 monitors an amount of media data stored in the media reception buffer 209 and when the amount of media data stored exceeds a threshold, the buffer monitoring section 208 notifies it to the transmission rate decision section 207. When information on the radio channel transmission rate from the radio control section 205 shows that the radio channel transmission rate is well within the capacity and when monitoring information from the buffer monitoring section 208 shows that the amount of data stored in the media reception buffer 209 does not exceed a threshold, the transmission rate decision section 207 outputs a request for increasing the transmission rate of the media data to the control signal transmission/reception section 206. Thus, even if the maximum rate of the radio channel transmission rate that can be set up decreases due to deterioration of a communication environment, it is possible to prevent data play back from being interrupted.
摘要翻译： 无线电控制部分205将无线电信道传输速率当前可以建立的传输速率通知给传输速率决定部分207。 缓冲器监视部分208监视存储在媒体接收缓冲器209中的媒体数据的数量，并且当存储的媒体数据量超过阈值时，缓冲器监视部分208通知传送速率决定部分207。 当来自无线电控制部分205的关于无线电信道传输速率的信息示出无线电信道传输速率在容量内时，并且当来自缓冲器监视部分208的监视信息表明存储在媒体接收缓冲器209中的数据量 不超过阈值时，传输速率决定部分207向控制信号发送/接收部分206输出增加媒体数据的传输速率的请求。 因此，即使能够设定的无线信道传输速率的最大速率由于通信环境的恶化而降低，也可以防止数据播放中断。
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公开(公告)号：US07036069B2
公开(公告)日：2006-04-25
申请号：US10355230
申请日：2003-01-31
IPC分类号： H03M13/00
CPC分类号： H04L1/0061 , H04L1/0009 , H04L1/0072 , H04L1/1635 , H04L69/16 , H04L69/163
摘要： The present invention provides a method and apparatus for distinguishing between congestion and corruption losses during the transmission of data packets. The packet lost distinction is based on the evaluation of an error detection/correction code of each data packet and by detecting sequence numbers.
摘要翻译： 本发明提供了一种在数据分组传输期间区分拥塞和损坏损耗的方法和装置。 分组丢失的区别基于对每个数据分组的错误检测/校正码的评估以及检测序列号。
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公开(公告)号：US07295575B2
公开(公告)日：2007-11-13
申请号：US10173308
申请日：2002-06-18
申请人： Daiji Ido , Koji Imura , Akihiro Miyazaki , Koichi Hata , Carsten Burmeister
发明人： Daiji Ido , Koji Imura , Akihiro Miyazaki , Koichi Hata , Carsten Burmeister
IPC分类号： H04J3/24
CPC分类号： H04L69/04 , H03M7/30 , H04L29/06 , H04L69/16 , H04L69/161 , H04L69/164 , H04L69/22
摘要： A packet transmission apparatus and method may divide data into a plurality of packets and transmit the packets. At a transmitting end, a context identifying number, identifying a data stream, is selected based on a relationship between a sequence number of a packet that is to be transmitted and a sequence number in an immediately preceding packet. A sequence number denoting an order of a packet divided on a per context basis is compressed, and transmission data assigned to the context identifying number with the compressed sequence number is transmitted on a per packet basis. At the receiving end, the compressed sequence number is decompressed on a per context basis. The context is separated based on the context identifying number, and data is combined by reassembling a packet into the order of a decompressed sequence number.
摘要翻译： 分组发送装置和方法可以将数据划分为多个分组并发送分组。 在发送端，基于要发送的分组的序列号与紧接在前的分组中的序列号之间的关系来选择识别数据流的上下文识别号码。 压缩表示以每个上下文为基础的分组的顺序的序列号，并且以每个分组为基础发送分配给具有压缩序列号的上下文识别号码的发送数据。 在接收端，压缩序列号在每个上下文的基础上进行解压缩。 基于上下文识别号分离上下文，并且通过将分组重组为解压缩序列号的顺序来组合数据。
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公开(公告)号：US07266118B2
公开(公告)日：2007-09-04
申请号：US10143989
申请日：2002-05-14
申请人： Daiji Ido , Koji Imura , Akihiro Miyazaki , Koichi Hata , Carsten Burmeister
发明人： Daiji Ido , Koji Imura , Akihiro Miyazaki , Koichi Hata , Carsten Burmeister
IPC分类号： H04L12/22
CPC分类号： H04L1/0045 , H04L1/0061 , H04L1/0072 , H04L69/04 , H04L69/16 , H04L69/161 , H04L69/22
摘要： A packet receiving method may include receiving a packet having either a compressed header or a noncompressed header. A packet received with a compressed header is decompressed to regenerate a non-compressed header for the packet. Error detection is performed to detect the presence of an error in a packet: (1) received with a noncompressed header, (2) having a regenerated non-compressed header, or (3) having a replacement non-compressed header. Part of the non-compressed header, in a packet having a regenerated non-compressed header, is replaced with previously stored non-compressed header information, which is known to be correct, when an error is detected in the packet so as to produce a replacement non-compressed header. A packet is output as a correctly received packet when no error is detected in the packet.
摘要翻译： 分组接收方法可以包括接收具有压缩报头或非压缩报头的分组。 用压缩报头接收的分组被解压缩以再生用于分组的非压缩报头。 执行错误检测以检测分组中的错误的存在：（1）使用非压缩报头接收（2）具有再生的非压缩报头，或（3）具有替换非压缩报头。 在具有再生的非压缩报头的分组中的非压缩报头的一部分被替换为已知正确的先前存储的非压缩报头信息，当在分组中检测到错误以产生 替换非压缩头。 当分组中没有检测到错误时，分组被输出为正确接收的分组。
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6.发明授权Data transmission method, data transmission apparatus, data reception apparatus, and packet data structure 有权数据发送方法，数据发送装置，数据接收装置以及分组数据结构公开(公告)号：US08160107B2
公开(公告)日：2012-04-17
申请号：US12206640
申请日：2008-09-08
IPC分类号： H04J3/18
CPC分类号： H04L69/04 , H04L69/08 , H04L69/16 , H04L69/161 , H04L69/168 , H04L69/22 , H04W28/06
摘要： A data transmission apparatus for sequentially transmitting data in units of packets each containing transmission data to the receiving end. The apparatus including a reception unit receiving the transmission data as an input signal, a packet formation unit receiving the transmission data, and forming an uncompressed packet in which predetermined transmission data is stored as uncompressed data, and a compressed packet in which at least a portion of transmission data that follows the predetermined transmission data is compressed and stored as compressed data. The apparatus also including a reference information management unit holding and managing as reference information related to the uncompressed packet, and a transmission unit transmitting the packets formed by the packet formation unit. The packet formation unit forming compressed data to be stored in a compressed packet, based on the transmission data of the uncompressed packet and the reference information.
摘要翻译： 一种数据发送装置，用于以包含发送数据的分组为单位顺序发送数据到接收端。 所述装置包括接收发送数据作为输入信号的接收单元，接收所述发送数据的分组形成单元，以及形成其中预定发送数据被存储为未压缩数据的未压缩分组，以及压缩分组，其中，至少一部分 按照预定发送数据的发送数据被压缩并存储为压缩数据。 该装置还包括参考信息管理单元，其保存和管理作为与未压缩分组相关的参考信息，以及发送单元，发送由分组形成单元形成的分组。 分组形成单元，基于未压缩分组的发送数据和参考信息，形成要存储在压缩分组中的压缩数据。
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公开(公告)号：US07158518B2
公开(公告)日：2007-01-02
申请号：US09909823
申请日：2001-07-23
申请人： Carsten Burmeister , Rolf Hakenberg
发明人： Carsten Burmeister , Rolf Hakenberg
IPC分类号： H04L12/56
摘要： A method and apparatus for transmitting data packets in a packet stream wherein the data packets have compressed headers. Update packets containing data indicating a context used in compressing the headers, and non-update packets are transmitted. An irregular change of the packet stream is detected and at least one packet stream parameter is obtained. Dependent on the determined packet stream parameter, either an extended update packet or an extended non-update packet is transmitted, wherein the extended packets include information about the irregular change. In addition, the packet stream parameter is estimated and a safety factor is applied.
摘要翻译： 一种用于在分组流中传输数据分组的方法和装置，其中所述数据分组具有压缩报头。 更新包含表示在压缩头部中使用的上下文的数据的分组，并且发送非更新分组。 检测到分组流的不规则变化，并获得至少一个分组流参数。 根据确定的分组流参数，发送扩展更新分组或扩展非更新分组，其中扩展分组包括关于不规则变化的信息。 另外，估计分组流参数并应用安全系数。
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8.发明授权Data transmission method for sequentially transmitting packets, data transmission apparatus, and data reception apparatus 有权用于顺序发送分组的数据发送方法，数据发送装置和数据接收装置公开(公告)号：US07486700B2
公开(公告)日：2009-02-03
申请号：US10735829
申请日：2003-12-16
IPC分类号： H04J3/18
CPC分类号： H04L69/04 , H04L69/08 , H04L69/16 , H04L69/161 , H04L69/168 , H04L69/22 , H04W28/06
摘要： A data transmission apparatus is provided for sequentially transmitting data in units of packets each containing transmission data to the receiving end, the apparatus including: a reception unit for receiving the transmission data as an input signal; a packet formation unit for receiving the transmission data received, and forming an uncompressed packet in which predetermined transmission data is stored as uncompressed data, and a compressed packet in which at least a portion of transmission data that follows the predetermined transmission data is compressed and stored as compressed data; a reference information management unit for holding and managing, as reference information, information relating to the uncompressed packet formed by the packet formation unit; and a transmission unit for transmitting the respective packets formed by the packet formation unit, as a transmission signal, to the receiving end.
摘要翻译： 提供了一种数据传输装置，用于以包含传输数据的分组为单位顺序发送数据到接收端，该装置包括：接收单元，用于接收传输数据作为输入信号; 分组形成单元，用于接收所接收的发送数据，并形成其中预定发送数据被存储为未压缩数据的未压缩分组;以及压缩分组，其中压缩和存储遵循预定发送数据的发送数据的至少一部分 作为压缩数据; 参考信息管理单元，用于保存和管理与分组形成单元形成的未压缩分组有关的信息作为参考信息; 以及发送单元，用于将由分组形成单元形成的各个分组作为发送信号发送到接收端。
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公开(公告)号：US07051358B2
公开(公告)日：2006-05-23
申请号：US09796756
申请日：2001-03-02
CPC分类号： H04L47/2416 , H04L1/18 , H04L47/10 , H04L47/14 , H04L47/32 , H04L47/34 , H04L47/38 , H04N19/107 , H04N19/166 , H04N19/172 , H04N19/61 , H04N19/89 , H04N21/6377 , H04N21/658
摘要： The present invention relates to a method and apparatus for transmitting video and/or audio data in a non-reliable and bandlimited network from a server to a client. The network may for instance be a wireless network. The data stream includes P-frames and I-frames. If during transmission a frame gets lost, the client notifies the server of the data loss when the next packet is received at the client correctly. The server then skips all the P-frames of the current P-frame sequence and continues the transmission with the next I-frame. Preferably, each packet has assigned a sequence number and the message from the client includes the sequence number of the currently received packet. The server may ignore a message from the client if the client's request for skipping the P-frames has already been executed. It is preferred to make use of the present invention for streaming MPEG data.
摘要翻译： 本发明涉及一种用于在不可靠和有限的网络中从服务器向客户端发送视频和/或音频数据的方法和装置。 网络可以例如是无线网络。 数据流包括P帧和I帧。 如果传输过程中一帧丢失，客户端会在客户端正确接收到下一个数据包时通知服务器数据丢失。 然后，服务器跳过当前P帧序列的所有P帧，并继续使用下一个I帧进行传输。 优选地，每个分组已经分配了序列号，并且来自客户端的消息包括当前接收分组的序列号。 如果客户端跳过P帧的请求已经被执行，服务器可以忽略客户端的消息。 优选利用本发明来传送MPEG数据。
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10.发明申请公开(公告)号：US20050175006A1
公开(公告)日：2005-08-11
申请号：US11100408
申请日：2005-04-07
CPC分类号： H04L69/04 , H04L69/08 , H04L69/16 , H04L69/161 , H04L69/168 , H04L69/22 , H04W28/06
摘要： A data transmission apparatus for sequentially transmitting data in units of packets each containing transmission data to the receiving end, comprises: a reception unit for receiving the transmission data as an input signal; a packet formation unit for receiving the transmission data received, and forming an uncompressed packet in which predetermined transmission data is stored as uncompressed data, and a compressed packet in which at least a portion of transmission data that follows the predetermined transmission data is compressed and stored as compressed data.
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