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    • 1. 发明授权
    • Method and apparatus for detecting communication channel delay asymmetry
    • 用于检测通信信道延迟不对称的方法和装置
    • US09042412B2
    • 2015-05-26
    • US13390962
    • 2009-12-31
    • Bin SuYouyi LiTorbjorn Einarsson
    • Bin SuYouyi LiTorbjorn Einarsson
    • H04J3/06H02H1/00H02H3/30
    • H04J3/0682H02H1/0061H02H3/30H04J3/065H04J3/0658
    • The invention provides a method and apparatus for detecting communication channel delay asymmetry between transmission line protection devices. The method comprises: calculating, repeatedly, clock disparity between clocks of the protection devices and communication delays at different paths of the communication channel; comparing the latest calculated clock disparity and communication delays with previously calculated clock disparities and communication delays, respectively; determining a channel switching has happened if a change of the calculated clock disparity exceeds a first threshold, or a change of the calculated communication delays for any path exceeds a second threshold; and determining the channel delays as asymmetrical if a difference between the calculated communication delays of the different paths after the channel switching exceeds a third threshold.
    • 本发明提供一种用于检测传输线路保护装置之间的通信信道延迟不对称的方法和装置。 该方法包括:重复地计算保护装置的时钟之间的时钟差异和在通信信道的不同路径处的通信延迟; 将最新计算的时钟差异和通信延迟与先前计算的时钟差异和通信延迟进行比较; 如果所计算的时钟视差的改变超过第一阈值或者所计算的任何路径的通信延迟的改变超过第二阈值,则确定频道切换已经发生; 以及如果在频道切换之后所计算的不同路径的通信延迟之间的差超过第三阈值,则将所述信道延迟确定为不对称。
    • 2. 发明申请
    • Method and Apparatus for Detecting Communication Channel Delay Asymmetry
    • 用于检测通信信道延迟不对称的方法和装置
    • US20120147941A1
    • 2012-06-14
    • US13390962
    • 2009-12-31
    • Bin SuYouyi LiTorbjorn Einarsson
    • Bin SuYouyi LiTorbjorn Einarsson
    • H04B17/00
    • H04J3/0682H02H1/0061H02H3/30H04J3/065H04J3/0658
    • The invention provides a method and apparatus for detecting communication channel delay asymmetry between transmission line protection devices. The method comprises: calculating, repeatedly, clock disparity between clocks of the protection devices and communication delays at different paths of the communication channel; comparing the latest calculated clock disparity and communication delays with previously calculated clock disparities and communication delays, respectively; determining a channel switching has happened if a change of the calculated clock disparity exceeds a first threshold, or a change of the calculated communication delays for any path exceeds a second threshold; and determining the channel delays as asymmetrical if a difference between the calculated communication delays of the different paths after the channel switching exceeds a third threshold.
    • 本发明提供一种用于检测传输线路保护装置之间的通信信道延迟不对称的方法和装置。 该方法包括:重复地计算保护装置的时钟之间的时钟差异和在通信信道的不同路径处的通信延迟; 将最新计算的时钟差异和通信延迟与先前计算的时钟差异和通信延迟进行比较; 如果所计算的时钟视差的改变超过第一阈值或者所计算的任何路径的通信延迟的改变超过第二阈值,则确定频道切换已经发生; 以及如果在频道切换之后所计算的不同路径的通信延迟之间的差超过第三阈值,则将所述信道延迟确定为不对称。
    • 6. 发明申请
    • Multimedia Session Management
    • 多媒体会话管理
    • US20070266122A1
    • 2007-11-15
    • US11666891
    • 2005-11-24
    • Torbjorn EinarssonAnders NohlgrenMagnus WesterlundMagnus Andersson
    • Torbjorn EinarssonAnders NohlgrenMagnus WesterlundMagnus Andersson
    • G06F15/177
    • H04N21/6408H04N21/4383H04N21/4384H04N21/643
    • 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.
    • 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。