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    Providing IPTV multicasts
    3.
    发明授权
    Providing IPTV multicasts 有权
    提供IPTV组播

    公开(公告)号：US08416797B2

    公开(公告)日：2013-04-09

    申请号：US12514239

    申请日：2007-04-03

    申请人： Mats Cedervall ,  Hans Byström ,  Torbjörn Einarsson

    发明人： Mats Cedervall ,  Hans Byström ,  Torbjörn Einarsson

    IPC分类号： H04J3/26

    CPC分类号： H04N7/17318 ,  H04N21/2221 ,  H04N21/23106 ,  H04N21/2347 ,  H04N21/2408 ,  H04N21/4331 ,  H04N21/4384 ,  H04N21/4405 ,  H04N21/6125 ,  H04N21/6175 ,  H04N21/6581

    摘要： A method and system of operating a Reliable Transmission Protocol switch node to provide an IPTV multicast is provided. According to an embodiment of the invention, IP packets transporting an encrypted media stream are received from an IPTV Head-end. The media stream contains complete image frames. Unencrypted identifiers identifying packets containing complete image frame data are also received. The received packets are stored in a buffer, and on receipt of a request from a media renderer to provide the IPTV multicast, the packet(s) containing the last complete image frame in the media stream and all subsequent packets are sent to the media renderer.

    摘要翻译： 提供了操作可靠传输协议交换节点以提供IPTV组播的方法和系统。 根据本发明的实施例，从IPTV头端接收传输加密媒体流的IP分组。 媒体流包含完整的图像帧。 还收到识别包含完整图像帧数据的数据包的未加密标识符。 接收的分组被存储在缓冲器中，并且在接收到来自媒体渲染器的提供IPTV多播的请求时，将包含媒体流中的最后完整图像帧的分组和所有后续分组发送到媒体渲染器 。

    MULTI-MEDIA MANAGEMENT
    4.
    发明申请
    MULTI-MEDIA MANAGEMENT 有权
    多媒体管理

    公开(公告)号：US20100036964A1

    公开(公告)日：2010-02-11

    申请号：US12444078

    申请日：2007-06-04

    申请人： Mats Cedervall ,  Henric Axelsson ,  Hans Byström

    发明人： Mats Cedervall ,  Henric Axelsson ,  Hans Byström

    IPC分类号： G06F15/16

    CPC分类号： H04N7/173 ,  H04L29/06 ,  H04L29/06027 ,  H04L47/28 ,  H04L65/403 ,  H04L65/4092 ,  H04L65/607 ,  H04L69/14 ,  H04L69/163 ,  H04L69/165 ,  H04L69/32 ,  H04N21/23439 ,  H04N21/238 ,  H04N21/26275 ,  H04N21/4384 ,  H04N21/6125 ,  H04N21/6405

    摘要： A multimedia provider multicasts a main multimedia stream comprising a mixture of intra and inter frames and multicasts an associated auxiliary stream comprising intra frames. At least a portion of the intra frames in the auxiliary stream are generated based on same multimedia data as at least a portion of the inter frames of the main stream. The provider also transmits a stream information channel comprising information descriptive of time instances of intra frames in the main and auxiliary streams. This information allows a set top box to selectively connect, in connection with session set-up and channel switch, to the main or auxiliary stream to receive an intra frame with as a low delay as possible.

    摘要翻译： 多媒体提供商多播包括帧内和帧间混合的主多媒体流，并且组播包括帧内帧的相关辅助流。 基于与主流的帧间帧的至少一部分相同的多媒体数据来生成辅助流中帧内的至少一部分。 提供者还发送流信息信道，其包括在主流和辅流中描述帧内时间实例的信息。 该信息允许机顶盒与会话建立和信道切换相关联地选择性地连接到主或辅助流以尽可能低的延迟来接收帧内帧。

    Method and IPTV Server for Enabling Playout of One or More Media Objects
    7.
    发明申请
    Method and IPTV Server for Enabling Playout of One or More Media Objects 有权
    用于启用一个或多个媒体对象播放的方法和IPTV服务器

    公开(公告)号：US20150026746A1

    公开(公告)日：2015-01-22

    申请号：US14370504

    申请日：2012-01-24

    申请人： Niklas Fondberg ,  Mats Cedervall

    发明人： Niklas Fondberg ,  Mats Cedervall

    IPC分类号： H04N21/2668 ,  H04N21/239 ,  H04N21/643 ,  H04N21/858 ,  H04N21/2387 ,  H04N21/61

    CPC分类号： H04N21/2668 ,  H04L65/4084 ,  H04L65/80 ,  H04N21/23106 ,  H04N21/2387 ,  H04N21/2393 ,  H04N21/2407 ,  H04N21/25833 ,  H04N21/4126 ,  H04N21/4331 ,  H04N21/4334 ,  H04N21/47202 ,  H04N21/6125 ,  H04N21/6175 ,  H04N21/64322 ,  H04N21/6543 ,  H04N21/6581 ,  H04N21/8586

    摘要： A method and an IPTV server (302) for enabling playout of one or more media objects for a subscriber. A current connection state and capabilities are maintained in the IPTV server for a set of devices (304, 304a) associated to the subscriber. The IPTV server further sends (3:3) a list of the devices to a first device (300), comprising current connection states of the devices. When the IPTV server receives from the first device a first indication (3:4) indicating a wanted media object and a second indication (3:5) indicating a selected second device (304), the IPTV server sends (3:6) a download instruction with a media reference to the selected second device. The download instruction instructs the second device to download and prebuffer (3:7) data of at least an opening part of the wanted media object based on the media reference. Thereby, a user can start playout of the wanted media object on the second device immediately without having to wait for session setup and downloading of enough data for playout.

    摘要翻译： 一种用于使用户能够播放一个或多个媒体对象的方法和IPTV服务器（302）。 在与用户相关联的一组设备（304,304a）中，IPTV服务器中保持当前连接状态和能力。 IPTV服务器还向第一设备（300）发送（3：3）设备的列表，其包括设备的当前连接状态。 当IPTV服务器从第一设备接收到指示所需媒体对象的第一指示（3：4）和指示所选择的第二设备（304）的第二指示（3：5）时，IPTV服务器发送（3：6）a 下载指令，并将媒体引用到所选择的第二个设备。 所述下载指令指示所述第二设备基于所述媒体参考来下载所需媒体对象的至少一个开放部分的预缓冲（3：7）数据。 因此，用户可以立即在第二设备上开始播放期望的媒体对象，而不必等待会话建立和下载足够的数据进行播放。

    IPTV Devices and Methods Adapted for Such Devices
    8.
    发明申请
    IPTV Devices and Methods Adapted for Such Devices 有权
    适应这种设备的IPTV设备和方法

    公开(公告)号：US20100235875A1

    公开(公告)日：2010-09-16

    申请号：US12687360

    申请日：2010-01-14

    申请人： Mats Cedervall ,  Nilo Mitra

    发明人： Mats Cedervall ,  Nilo Mitra

    IPC分类号： H04N7/173

    CPC分类号： G06F21/572 ,  G06F8/65 ,  H04N21/42684 ,  H04N21/435 ,  H04N21/443 ,  H04N21/4432 ,  H04N21/4586 ,  H04N21/6125 ,  H04N21/6175

    摘要： Methods and apparatus for enabling upgrading of a television (TV) device that is connectable to an internet protocol TV (IPTV) system including an operator system and a TV manufacturer system are described. The upgrading is based on a token object and verifies a requested upgrading of the TV device. A token object is generated at the TV manufacturer system in response to receiving a request for upgrading from the TV device, and delivered to the TV device, thus enabling the TV device to complete the requested upgrading process due to possessing a valid token. A TV device, an operator system, and a TV manufacturer system adapted to execute the suggested methods are also provided.

    摘要翻译： 描述了能够升级可连接到包括操作员系统和TV制造商系统的因特网协议电视（IPTV）系统的电视（TV）设备的方法和装置。 升级是基于令牌对象，并验证电视设备的请求升级。 响应于从TV设备接收到升级的请求并在TV设备上生成令牌对象，从而使得TV设备由于拥有有效的令牌而完成所请求的升级过程。 还提供了适于执行建议方法的TV设备，操作员系统和TV制造商系统。

    Method and apparatus for interference rejection
    9.
    发明授权
    Method and apparatus for interference rejection 有权
    用于干扰抑制的方法和装置

    公开(公告)号：US07092463B1

    公开(公告)日：2006-08-15

    申请号：US09549559

    申请日：2000-04-14

    申请人： Mats Cedervall ,  Bo Göransson ,  Joakim Sorelius

    发明人： Mats Cedervall ,  Bo Göransson ,  Joakim Sorelius

    IPC分类号： H03D1/04

    CPC分类号： H04L25/03299 ,  H04B7/005

    摘要： The invention relates to an apparatus, and an associated method, in a communication system that is tolerant to interference. The received signal is divided into a real and an imaginary part, and the noise and interference is modeled as a filtered process. The invention solves the interference problem by utilizing the inherent signal structure.

    摘要翻译： 本发明涉及一种容忍干扰的通信系统中的装置和相关联的方法。 接收信号被分为实部和虚部，噪声和干扰被建模为滤波过程。 本发明通过利用固有信号结构解决了干扰问题。

    Method and system for determining position of a cellular mobile terminal
    10.
    发明授权
    Method and system for determining position of a cellular mobile terminal 失效
    用于确定蜂窝移动终端的位置的方法和系统

    公开(公告)号：US6011974A

    公开(公告)日：2000-01-04

    申请号：US935421

    申请日：1997-09-23

    申请人： Mats Cedervall ,  Patrik Lundqvist

    发明人： Mats Cedervall ,  Patrik Lundqvist

    IPC分类号： H04B7/26 ,  G01S5/00 ,  G01S5/14 ,  G01S13/87 ,  G01S19/25 ,  H04W64/00 ,  H04Q7/20

    CPC分类号： H04W64/00 ,  G01S13/878 ,  G01S5/0036 ,  G01S5/14

    摘要： A method and system are disclosed by which a round-trip calculation is used to determine the distance between a mobile radio station (MS) and a radio base station (BS) using the apparent uplink and downlink signal propagation air-times (e.g., T-up and T-down). As such, no absolute time reference is required. The MS and BS report to a service node in the mobile network the local departure and arrival times of the uplink and downlink signals, and calculate the apparent air-times, T-up and T-down. The distance, D, between the MS and BS can be calculated as D=c(T-up+T-down)/2, where "c" equals the speed of light. The distances, D1, D2 and D3, to at least three base stations whose locations are known, can be used in a triangulation algorithm to determine the MS's position.

    摘要翻译： 公开了一种方法和系统，通过该方法和系统，使用往返计算来使用表观上行链路和下行链路信号传播空气时间来确定移动无线电台（MS）和无线电基站（BS）之间的距离（例如，T -up和T-down）。 因此，不需要绝对时间参考。 MS和BS向移动网络中的服务节点报告上行链路和下行链路信号的本地出发和到达时间，并计算表观空中时间，T-up和T-down。 MS和BS之间的距离D可以计算为D = c（T-up + T-down）/ 2，其中“c”等于光速。 距离D1，D2和D3到位置已知的至少三个基站可以用于三角测量算法中以确定MS的位置。