Protection of the distribution of digital documents in a peer to peer network
    2.
    发明授权
    Protection of the distribution of digital documents in a peer to peer network 有权
    保护对等网络中数字文档的分发

    公开(公告)号:US07966491B2

    公开(公告)日:2011-06-21

    申请号:US10857884

    申请日:2004-06-02

    CPC classification number: H04L63/08 H04L67/104 H04L67/1063 H04L69/329

    Abstract: A central server in a network of a hybrid peer to peer type, receives a request from a client for obtaining a digital document, where the request contains a reference of the digital document. The server selects a peer system of the network likely to contain the digital document, and generates an access key for controlling access to the digital document by the client, where the access key is generated by an encrypting method using a private key of the central server, a current time when the encrypting method is executed and an address of the client on the network. The server then sends a message to the client, where the message has the reference of the digital document, an address of the selected peer system on the network and the generated access key.

    Abstract translation: 混合对等类型的网络中的中央服务器,从客户端接收用于获取数字文档的请求,其中请求包含数字文档的引用。 服务器选择可能包含数字文档的网络的对等系统,并且生成用于控制客户机对数字文档的访问的访问密钥,其中通过使用中央服务器的私钥的加密方法生成访问密钥 ,执行加密方法的当前时间和网络上客户端的地址。 然后,服务器向客户端发送消息,其中消息具有数字文档的引用,网络上所选择的对等系统的地址和生成的访问密钥。

    Method of allocating a service by a first peer to a second peer in a communication network
    3.
    发明授权
    Method of allocating a service by a first peer to a second peer in a communication network 失效
    在通信网络中将第一对等体分配服务到第二对等体的方法

    公开(公告)号:US07734751B2

    公开(公告)日:2010-06-08

    申请号:US10781772

    申请日:2004-02-20

    Abstract: A method of allocating at least one service by a first peer (E) to a second peer (D), the peers being linked by means of a computer communication network, the first and second peers belonging respectively to a first and second group of peers adapted to share data, comprises the following steps: evaluating (E63) a distance (d0) between the first peer (E) and the second peer (D); and selecting (E65) a service allocated by the first peer (E) according to the value (d0) of the distance.

    Abstract translation: 一种通过第一对等体(E)向第二对等体(D)分配至少一个服务的方法,所述对等体借助于计算机通信网络链接,所述第一和第二对等体分别属于第一和第二组对等体 适于共享数据,包括以下步骤:评估(E63)第一对等端(E)与第二对等端(D)之间的距离(d0); 以及根据所述距离的值(d0)来选择(E65)由所述第一对等体(E)分配的服务。

    Method and device for transmitting data
    4.
    发明授权
    Method and device for transmitting data 有权
    用于传输数据的方法和装置

    公开(公告)号:US08462778B2

    公开(公告)日:2013-06-11

    申请号:US12246372

    申请日:2008-10-06

    Abstract: The method of transmitting data packets associated with an importance level comprises a step (305) of estimating available rate on the network. In case a variation is detected in estimated available rate greater than a first predetermined value, determination is made (309-317) of whether there is an increase in the round trip time on said network that is greater than a second predetermined value. If yes, the data packets are transmitted (319-325) at a rate lower than the estimated available rate.In embodiments, in case a variation is detected in estimated available rate greater than a first predetermined value and before the step of detecting an increase in the round trip time, a step (307) is carried out of transmitting packets of lower importance level than the average of said importance levels by using the current estimated available rate and the round trip time is determined on the basis of the sending of those packets.

    Abstract translation: 发送与重要性级相关联的数据分组的方法包括估计网络上的可用速率的步骤(305)。 在以大于第一预定值的估计可利用率检测到变化的情况下,确定是否存在大于第二预定值的所述网络上的往返时间的增加(309-317)。 如果是,数据包以低于估计可用速率的速率传输(319-325)。 在实施例中,在以大于第一预定值的估计可用速率检测到变化并且在检测到往返时间增加的步骤之前,执行步骤(307)以发送低于第 基于这些分组的发送来确定通过使用当前估计可用速率和往返时间的所述重要性级别的平均值。

    METHOD AND DEVICE FOR COMPUTING THE AVAILABLE SPACE IN A PACKET FOR DATA STREAM TRANSPORT
    5.
    发明申请
    METHOD AND DEVICE FOR COMPUTING THE AVAILABLE SPACE IN A PACKET FOR DATA STREAM TRANSPORT 有权
    用于在数据流传输的分组中计算可用空间的方法和装置

    公开(公告)号:US20110194439A1

    公开(公告)日:2011-08-11

    申请号:US13016651

    申请日:2011-01-28

    CPC classification number: H04L49/901

    Abstract: The method of computing the available space in a packet for data stream transport comprises: a step of determining the requirements of each module of a data stream manager, for space in the packet for at least two types of header and/or extension data required by each protocol and/or service used by said module, a step of determining a maximum space requirement in the packet to meet all these requirements, by implementing different rules for combining space requirements for the different types of data and a sum of the combined requirements for the different types of data and a step of computing a difference between the space of the packet and the maximum space requirement in the packet in order to determine the available space for data stream transport.

    Abstract translation: 计算用于数据流传输的分组中的可用空间的方法包括:为数据包中的空间确定数据流管理器的每个模块的要求的步骤,用于针对数据流管理器所需的至少两种类型的报头和/或扩展数据 由所述模块使用的每个协议和/或服务,通过实施用于组合不同类型的数据的空间要求的不同规则和组合要求的总和来确定分组中的最大空间需求以满足所有这些要求的步骤 不同类型的数据和计算分组的空间与分组中的最大空间需求之间的差异的步骤,以便确定用于数据流传输的可用空间。

    Client based congestion control mechanism
    7.
    发明申请
    Client based congestion control mechanism 有权
    基于客户端的拥塞控制机制

    公开(公告)号:US20120120805A1

    公开(公告)日:2012-05-17

    申请号:US13294035

    申请日:2011-11-10

    Abstract: The invention concerns a method of notifying control information to a congestion control mechanism in charge of controlling data segments sending rate of a server towards a client. The control information includes loss events where a loss event corresponds to one or more data segments lost. The method comprises a step of receiving data segments into a reception buffer at the client, a step of detecting loss events from the received data segments and a step of notifying the congestion control mechanism with a number of loss events that is dependent on the number of detected loss events and a measure of criticality related to the reception of the data segments by the client. The measure of criticality can be derived from the filling level of the reception buffer, the reception of data segments being in a critical state when the reception buffer is experiencing overflow or underflow conditions.

    Abstract translation: 本发明涉及一种将控制信息通知给负责控制向客户端发送服务器的速率的数据段的拥塞控制机制的方法。 控制信息包括损失事件,其中损失事件对应于丢失的一个或多个数据段。 该方法包括将数据段接收到客户端的接收缓冲器中的步骤,从接收到的数据段检测丢失事件的步骤以及依赖于数量的数量的多个丢失事件通知拥塞控制机制的步骤 检测到的损失事件以及与客户接收数据段相关的关键性度量。 关键性的度量可以从接收缓冲器的填充级别,接收缓冲器正在经历溢出或下溢条件时处于临界状态的数据段的接收导出。

    METHOD OF SENDING DATA AND ASSOCIATED DEVICE
    8.
    发明申请
    METHOD OF SENDING DATA AND ASSOCIATED DEVICE 有权
    发送数据和相关设备的方法

    公开(公告)号:US20100318675A1

    公开(公告)日:2010-12-16

    申请号:US12793650

    申请日:2010-06-03

    Abstract: A method of sending a data stream of video images between a server and at least one client device in a communication network, employing a rate setting for the sending of data over the communication network, the method comprising the following steps: obtaining (910) an item of information Pc representing a speed of variation over time for a rate setting, said item of information depending on at least one characteristic of the state of the traffic over the communication network, comparing (920) said item of information Pc so obtained with a scheduled time Ev for a set of video image data to send, adapting (930) the rate setting delivered by the server on the basis of at least the result of the comparing step, compressing said set of video image data to send using a compression mode which depends on the adapted rate setting, sending said set of video image data so compressed.

    Abstract translation: 一种在通信网络中的服务器与至少一个客户端设备之间发送视频图像数据流的方法,采用通过通信网络发送数据的速率设置,该方法包括以下步骤:获得(910) 信息项代表速率设定随时间变化的速度,所述信息项取决于通信网络上的业务状态的至少一个特性,将所获得的所述信息项Pc与 基于至少比较步骤的结果来适应(930)由服务器传送的速率设置的压缩模式,将压缩所述视频图像数据集合发送到压缩模式 这取决于适配速率设置,发送所述压缩的视频图像数据集。

    Method and device for error concealment in motion estimation of video data

    公开(公告)号:US09866872B2

    公开(公告)日:2018-01-09

    申请号:US13560864

    申请日:2012-07-27

    CPC classification number: H04N19/895 H04N19/46 H04N19/56 H04N19/96

    Abstract: An encoder extracts motion vectors from a frame I(t−1) preceding the frame I(t) being encoded and processes them to create an estimated motion vector field I(t) for the frame being encoded. A minimized difference between the motion vector field of the frame being encoded and the estimated motion vector field is used to generate transform parameters, which are transmitted to the decoder as auxiliary information along with the usual motion prediction information. The decoder receives the transform parameters. The decoder also creates an estimated motion vector field I(t) for based on a preceding frame I(t−1) and applies the transform parameters to the estimated motion vector field to obtain missing motion vectors. The motion vector field rebuilt using the reconstructed missing motion vectors is used for subsequent error concealment/decoding/displaying.

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