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1.发明公开OFDM receiving system for performing system timing synchronization using guard interval and method for the same 有权Ofdm-Empfangssystem zur Taktsynchronisierung mit einem Schutzintervall und entsprechendes Verfahren
公开(公告)号：EP1276289A2
公开(公告)日：2003-01-15
申请号：EP01130993.7
申请日：2001-12-28
IPC分类号： H04L27/26
CPC分类号： H04L25/03006 , H04L27/2607 , H04L27/261 , H04L27/2662 , H04L27/2679
摘要： An orthogonal frequency division multiplex (OFDM) receiving system for changing a fast Fourier transform (FFT) window period using a guard interval, and a method for the same are provided. The method includes extracting scattered pilots, which are inserted into a symbol at intervals of predetermined samples, from a received OFDM signal, estimating a symbol timing offset using the extracted scattered pilots and setting a symbol timing synchronization point in the data transmission interval, and adding samples in a predetermined interval in the data transmission interval to samples in an interval obtained by subtracting a predetermined length from the useful symbol interval starting from the symbol timing synchronization point and performing FFT with respect to the result of addition. Accordingly, symbol timing synchronization and channel equalization can be accurately performed without having ISI even when a symbol start point is not correctly decided under a multi-channel (or a Rayleigh channel) or a pre-ghost channel environment.
摘要翻译： 提供了一种用于使用保护间隔改变快速傅里叶变换（FFT）窗口周期的正交频分复用（OFDM）接收系统及其方法。 该方法包括从接收到的OFDM信号中提取以预定采样间隔插入到符号中的散射导频，使用提取的散射导频估计符号定时偏移量，并在数据传输间隔中设置符号定时同步点，并添加 在数据传输间隔中以预定间隔采样，以从符号定时同步点开始的有用符号间隔减去预定长度而获得的间隔进行采样，并对相加结果执行FFT。 因此，即使当在多声道（或瑞利声道）或预幽灵信道环境下未正确判定符号起始点时，也可以不进行ISI的精确地执行符号定时同步和信道均衡。
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2.发明公开
公开(公告)号：EP2254042A1
公开(公告)日：2010-11-24
申请号：EP10162813.9
申请日：2010-05-14
发明人： Jang, Jun-ho , Kim, Jung-jin , Jun, Hae-sik , Kim, Young-suk
CPC分类号： G06F9/542 , G06F9/45512 , G06F2209/545
摘要： Provided are a method and apparatus for controlling content. The method includes generating a user event corresponding to user input required for controlling the content when the user input is received, obtaining information regarding an application intended to process the user event, and generating user event scenario information into which the information regarding the application and information regarding the user event are combined. The apparatus includes a user event generator, an information obtaining unit, and an information generator.
摘要翻译： 提供了一种用于控制内容的方法和装置。 该方法包括：生成与接收用户输入时控制内容所需的用户输入对应的用户事件，获取有关用于处理用户事件的应用的信息，以及生成用户事件场景信息，其中关于应用和信息的信息 关于用户事件被组合。 该装置包括用户事件发生器，信息获取单元和信息发生器。
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3.发明授权OFDM receiving system for performing system timing synchronization using guard interval and method for the same 有权OFDM接收用于时钟同步系统，具有保护间隔及相应方法
公开(公告)号：EP1276289B1
公开(公告)日：2006-03-08
申请号：EP01130993.7
申请日：2001-12-28
CPC分类号： H04L25/03006 , H04L27/2607 , H04L27/261 , H04L27/2662 , H04L27/2679
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4.发明公开OFDM receiving system for performing system timing synchronization using guard interval and method for the same 有权OFDM接收系统，用于使用保护间隔执行系统定时同步以及用于该方法的方法
公开(公告)号：EP1276289A3
公开(公告)日：2003-06-04
申请号：EP01130993.7
申请日：2001-12-28
CPC分类号： H04L25/03006 , H04L27/2607 , H04L27/261 , H04L27/2662 , H04L27/2679
摘要： An orthogonal frequency division multiplex (OFDM) receiving system for changing a fast Fourier transform (FFT) window period using a guard interval, and a method for the same are provided. The method includes extracting scattered pilots, which are inserted into a symbol at intervals of predetermined samples, from a received OFDM signal, estimating a symbol timing offset using the extracted scattered pilots and setting a symbol timing synchronization point in the data transmission interval, and adding samples in a predetermined interval in the data transmission interval to samples in an interval obtained by subtracting a predetermined length from the useful symbol interval starting from the symbol timing synchronization point and performing FFT with respect to the result of addition. Accordingly, symbol timing synchronization and channel equalization can be accurately performed without having ISI even when a symbol start point is not correctly decided under a multi-channel (or a Rayleigh channel) or a pre-ghost channel environment.
摘要翻译： 提供了使用保护间隔来改变快速傅里叶变换（FFT）窗口周期的正交频分复用（OFDM）接收系统及其方法。 该方法包括：从接收到的OFDM信号中以预定样本的间隔提取插入到符号中的散布导频，使用提取的散射导频估计符号定时偏移并且在数据传输间隔中设置符号定时同步点， 将数据发送间隔中的预定间隔中的样本采样到通过从码元定时同步点开始的有用码元间隔中减去预定长度而获得的间隔中的样本，并且针对相加结果执行FFT。 因此，即使在多信道（或瑞利信道）或预重影信道环境下未正确决定符号开始点时，也可以在不具有ISI的情况下准确地执行符号定时同步和信道均衡。
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