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    • 61. 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。
    • 66. 发明申请
    • 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
    • US20070165628A1
    • 2007-07-19
    • US11644552
    • 2006-12-21
    • Jeong-Seok ChoiYoung-Hun JooYong-Deok KimKyung-Ho ChaeYun-Je Oh
    • Jeong-Seok ChoiYoung-Hun JooYong-Deok KimKyung-Ho ChaeYun-Je Oh
    • H04L12/56
    • 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。
    • 67. 发明申请
    • Method for approval of time-dependent stream in residential Ethernet system
    • 在住宅以太网系统中批准时间依赖流的方法
    • US20070041406A1
    • 2007-02-22
    • US11506135
    • 2006-08-17
    • Sihai WangSang-Ho KimYoung-Hun JooJae-Hun ChoYun-Je OhFei-Fei Feng
    • Sihai WangSang-Ho KimYoung-Hun JooJae-Hun ChoYun-Je OhFei-Fei Feng
    • H04J3/06
    • H04L12/66
    • Disclosed is a method for approval of a time-dependent stream input to a predetermined node in a residential Ethernet system, the method including the steps of receiving a transmission request of the time-dependent stream by the predetermined node, extracting a pacing parameter and a cycle number, which are a delay value of the predetermined node and a transmission period of the time-dependent stream, respectively, from the transmission-requested time-dependent stream, calculating a transmission bandwidth of an entire time-dependent stream to be transmitted through the predetermined node, by taking into consideration the pacing parameter and the cycle number, determining if the transmission bandwidth, which includes the transmission-requested time-dependent stream, satisfies a total transmission bandwidth based on the pacing parameter and the cycle number and determining whether to approve the transmission-requested time-dependent stream.
    • 公开了一种用于批准在住宅以太网系统中的预定节点输入时间的流的方法,所述方法包括以下步骤:接收预定节点对时间相关流的传输请求,提取起搏参数和 周期数,分别是来自发送请求的时间相关流的预定节点的延迟值和时间相关流的发送周期,计算要通过的整个时间依赖流的传输带宽 通过考虑起搏参数和周期数,确定包括发送请求的时间相关流的传输带宽是否基于起搏参数和周期数满足总传输带宽,并确定是否 以批准传输请求的时间依赖流。
    • 69. 发明申请
    • Image encoding apparatus and memory access method
    • 图像编码装置和存储器访问方法
    • US20080089418A1
    • 2008-04-17
    • US11904088
    • 2007-09-26
    • Bong-Gon KimChan-Yul KimYoung-Hun Joo
    • Bong-Gon KimChan-Yul KimYoung-Hun Joo
    • H04B1/66G06K9/32H04N7/12
    • H04N19/523H04N19/433H04N19/61
    • Disclosed is an image encoding apparatus and a memory access method. The image encoding apparatus for encoding image data includes: a memory for storing a frame of the image data; a motion prediction unit for detecting a motion vector of a predetermined block unit for a currently-input image frame based on the stored frame, and accessing the memory in order to perform sub-pixel interpolation for a corresponding block of the motion vector; and a motion compensation unit for performing motion compensation with respect to a frame block to be compressed, by using the detected motion vector, thereby reducing the number of times the memory is accessed for encoding. Since the number of memory access times is reduced, which is very frequently used in interpolation of a color difference signal, low-power encoding is achieved.
    • 公开了图像编码装置和存储器访问方法。 用于编码图像数据的图像编码装置包括:存储器,用于存储图像数据的帧; 运动预测单元,用于基于所存储的帧来检测用于当前输入的图像帧的预定块单元的运动矢量,并且访问存储器以便为运动矢量的相应块执行子像素插值; 以及运动补偿单元,用于通过使用检测到的运动矢量来执行关于要压缩的帧块的运动补偿,由此减少存储器被访问以进行编码的次数。 由于在色差信号的插值中经常使用的存储器访问次数减少,因此实现了低功率编码。
    • 70. 发明申请
    • Method and apparatus for reception of mobile broadcast
    • 用于接收移动广播的方法和装置
    • US20070197174A1
    • 2007-08-23
    • US11642263
    • 2006-12-20
    • Yong-Deok KimYoung-Hun JooJeong-Seok ChoiKyung-Ho Chae
    • Yong-Deok KimYoung-Hun JooJeong-Seok ChoiKyung-Ho Chae
    • H04B17/02H04B7/08H04B1/06
    • H04H20/26H04H20/24H04H60/82
    • An apparatus for reception of a mobile broadcast is disclosed. The apparatus includes a mobile broadcast reception unit for receiving a broadcast signal transmitted through a mobile broadcasting network, demodulating the broadcast signal into a baseband signal, and outputting the baseband signal; and a wireless Internet broadcast reception unit for receiving a broadcast signal transmitted through a wireless Internet network, demodulating the broadcast signal into a baseband signal, and outputting the baseband signal, and the apparatus also includes a post-processing unit for checking reception sensibilities of the mobile broadcast reception unit and the wireless Internet broadcast reception unit, selecting and decoding one signal of output signals of the mobile broadcast reception unit and the wireless Internet broadcast reception unit according to a result of the checking, and outputting the selected and decoded signal. A reception sensibility of a mobile broadcasting network is monitored while a broadcast is being viewed through the mobile broadcasting network, a pilot signal of a wireless Internet network is measured when a corresponding mobile broadcast has a weak electric field, and a current network is shifted to a corresponding wireless Internet network having a pilot signal with a signal intensity above a threshold value when the corresponding wireless Internet network exists, thereby receiving the broadcast through the corresponding wireless Internet network.
    • 公开了一种用于接收移动广播的装置。 该装置包括移动广播接收单元,用于接收通过移动广播网络发送的广播信号,将广播信号解调为基带信号,并输出基带信号; 以及无线因特网广播接收单元,用于接收通过无线因特网发送的广播信号,将广播信号解调为基带信号,并输出基带信号,并且该装置还包括后处理单元,用于检查接收灵敏度 移动广播接收单元和无线因特网广播接收单元,根据检查结果选择和解码移动广播接收单元和无线因特网广播接收单元的输出信号的一个信号,并输出所选择和解码的信号。 在通过移动广播网络观看广播时监视移动广播网络的接收灵敏度,当对应的移动广播具有弱电场时,测量无线因特网的导频信号,并且将当前网络转移到 相应的无线因特网网络,当相应的无线因特网存在时,具有信号强度高于阈值的导频信号,从而通过相应的无线因特网网络接收广播。