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    • 31. 发明授权
    • System and method for digital multimedia broadcasting confinement service
    • 数字多媒体广播约束服务的系统和方法
    • US07873072B2
    • 2011-01-18
    • US11636932
    • 2006-12-11
    • Han-Sang KimKwan-Woong SongYoung-Hun JooYong-Deok KimYun-Je Oh
    • Han-Sang KimKwan-Woong SongYoung-Hun JooYong-Deok KimYun-Je Oh
    • H04J3/16
    • H04H60/23H04N7/52H04N21/23608H04N21/2362H04N21/23895H04N21/4344H04N21/4345H04N21/43853H04N21/835
    • Disclosed are a system and method for providing digital multimedia broadcasting confinement service. The system includes: a relay center side system, which is adopted to the relay center, according to the relay center side packet identification description (PID) key, for modifying the PID of transport stream and generating the distorted program specific information (PSI); and a terminal side system, which is adopted to the DMB terminal, according to the terminal side PID key, for recovering the distorted PSI of the transport stream received from the relay center and decoding it. The method includes the steps of: identifying whether the actual PID of the TS is consistent when the TS is demultiplexed by audio/video PID acquired through the program map table (PMT) analysis of the TS; generating a preset alarm signal; modifying the PID of the audio/video data in the PMT according to the terminal side PID; and demultiplexing the TS according to the modified PID value.
    • 公开了一种用于提供数字多媒体广播限制服务的系统和方法。 该系统包括:根据中继中心侧分组识别描述(PID)密钥对继电器中心采用的中继侧系统,用于修改传输流的PID并产生失真的程序特定信息(PSI); 以及根据终端侧PID密钥被用于DMB终端的终端侧系统,用于恢复从中继中心接收的传输流的失真PSI并对其进行解码。 该方法包括以下步骤:当通过TS的节目映射表(PMT)分析获得的音频/视频PID解复用TS时,识别TS的实际PID是否一致; 产生预设的报警信号; 根据终端侧PID修改PMT中的音频/视频数据的PID; 并根据修改的PID值解复用TS。
    • 37. 发明授权
    • Retransmission apparatus using IP multicasting method for DMB service
    • 使用IP组播方式进行DMB业务的重传设备
    • US07924762B2
    • 2011-04-12
    • US11644552
    • 2006-12-22
    • Jeong-Seok ChoiYoung-Hun JooYong-Deok KimKyung-Ho ChaeYun-Je Oh
    • Jeong-Seok ChoiYoung-Hun JooYong-Deok KimKyung-Ho ChaeYun-Je Oh
    • H04B7/14H04J1/10H04J3/26H04J3/16H04J3/04H04L12/28H04N7/01H04N7/00H04N7/12
    • H04L12/189H04H40/18H04H60/82H04L1/0007H04L12/1863H04L29/06027H04L65/4076H04L65/605
    • A retransmission apparatus using an IP multicasting method for a DMB service including a plurality (n) of radio frequency (RF) receivers, each for receiving a DMB RF signal of a corresponding channel, a plurality (n) of DMB decoders, each for outputting a transport stream (TS) by decoding the DMB RF signal received from a corresponding RF receiver, a plurality (n) of slicers, each for processing the TS input from a corresponding DMB decoder; a plurality (n) of network interfacers, each for IP packetizing the TS sliced by a corresponding slicer; a network switch for receiving the IP packets from the plurality (n) of network interfacers, transferring the received IP packets to a multicasting processing unit, and receiving multicasting data from the multicasting processing unit, and the multicasting processing unit for receiving the IP packets from the network switch, creating a single piece of multicasting data by assigning multicasting addresses to the received IP packets, and outputting the created multicasting data to the network switch.
    • 一种使用包含多个(n)个射频(RF)接收机的DMB业务的IP组播方法的重传装置,每个用于接收对应信道的DMB RF信号,多个(D)个DMB解码器,用于输出 通过解码从对应的RF接收机接收的DMB RF信号的传输流(TS),多个(n)个限幅器,每个用于处理来自相应的DMB解码器的TS输入; 多个(n)个网络接口,每个用于IP分组化由对应的限幅器切片的TS; 用于从所述多个网络接口接收所述IP分组的网络交换机,将接收到的IP分组传送到多播处理单元,以及从所述多播处理单元接收组播数据;以及所述多播处理单元,用于从所述多播处理单元接收所述IP分组 网络交换机,通过向接收到的IP分组分配多播地址来创建单个组播数据,并将创建的组播数据输出到网络交换机。
    • 38. 发明申请
    • Apparatus and method for determining adaptive encoding mode in H.264 encoder
    • 用于确定H.264编码器中的自适应编码模式的装置和方法
    • US20080095242A1
    • 2008-04-24
    • US11904701
    • 2007-09-28
    • Yong-Hyun LimYoung-O ParkYun-Je OhYoung-Hun Joo
    • Yong-Hyun LimYoung-O ParkYun-Je OhYoung-Hun Joo
    • H04N7/26
    • H04N19/105H04N19/137H04N19/176H04N19/51
    • An apparatus for determining an encoding mode in an H.264 encoder is provided with a 16×16 macroblock number calculating unit and a threshold updating unit. The 16×16 macroblock number calculating unit calculates means of the number of 16×16 macroblocks. The threshold updating unit compares the number of 16×16 macroblocks of a frame, which is chosen to be currently encoded, with the mean of the number of 16×16 macroblocks among or within the frames, and updates a currently set threshold according to a result of comparing. Then, calculating unit checks the number of times by which the encoding mode is determined by the 16×16 macroblock in a frame whose encoding is currently completed, and the threshold updating unit compares the number of times with the currently set threshold to increase or decrease the threshold according to a result of the comparison.
    • 用于确定H.264编码器中的编码模式的装置具有16×16宏块数计算单元和阈值更新单元。 16×16宏块数计算单元计算16×16宏块的数量的装置。 阈值更新单元将选择当前被编码的帧的16×16个宏块的数目与帧内或帧内的16×16个宏块的数目的平均值进行比较,并且根据比较结果来更新当前设置的阈值。 然后,计算单元检查在编码当前完成的帧中由16×16宏块确定编码模式的次数,并且阈值更新单元将该次数与当前设置的阈值进行比较以增加或减少阈值 根据比较的结果。
    • 40. 发明申请
    • Apparatus and method for matching compressed video data under wireless fading environment
    • 在无线衰落环境下匹配压缩视频数据的装置和方法
    • US20070195893A1
    • 2007-08-23
    • US11652336
    • 2007-01-11
    • Chan-Yul KimJeong-Rok ParkYoung-Hun JooYun-Je Oh
    • Chan-Yul KimJeong-Rok ParkYoung-Hun JooYun-Je Oh
    • H04B1/66
    • H04N19/36H04N19/115H04N19/132H04N19/154H04N19/166H04N19/31H04N19/39
    • A method and apparatus for matching compressed video data under a wireless fading environment are disclosed. The apparatus includes an encoder for encoding and outputting the video data as a compressed bit stream, a channel error measurement unit for measuring Signal-to-Noise Ratio (SNR) or Carrier-to-Noise Ratio (CNR) of a wireless channel, and an encoder optimization module for determining if the current fading is slow fading or fast fading. A control signal is output to reduce a frame transmission ratio or to change the quality of the vide data if it is determined that the current fading is slow fading. Another control signal is output to adjust the size of a data output buffer of the wireless channel if it is determined that the current fading is fast fading. The apparatus also includes a temporal Scalable Video Coding (SVC) selector 24 and an SNR SVC selector 22 for selecting the frame transmission ratio or the bit rate according to the control signal output from the encoder optimization module, to provide a frame selection signal or a bit rate selection signal to the encoder.
    • 公开了一种用于在无线衰落环境下匹配压缩视频数据的方法和装置。 该装置包括用于编码和输出作为压缩比特流的视频数据的编码器,用于测量无线信道的信噪比(SNR)或载波对噪声比(CNR)的信道误差测量单元,以及 编码器优化模块,用于确定当前衰落是衰减缓慢还是快速衰落。 输出控制信号以降低帧传输比,或者如果确定当前衰落是缓慢衰落,则改变视频数据的质量。 如果确定当前的衰落是快衰落,则输出另一个控制信号以调整无线信道的数据输出缓冲器的大小。 该装置还包括时间可缩放视频编码(SVC)选择器24和SNR SVC选择器22,用于根据从编码器优化模块输出的控制信号来选择帧传输比率或比特率,以提供帧选择信号或 比特率选择信号到编码器。