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    • 83. 发明授权
    • Apparatus and method for transmitting and receiving data using visible light communication
    • 使用可见光通信发送和接收数据的装置和方法
    • US08463134B2
    • 2013-06-11
    • US12918950
    • 2009-02-20
    • Jeong-Seok ChoiYun-Je OhDae-Kwang JungHong-Seok ShinKyung-Woo LeeDong-Jae ShinSung-Bum Park
    • Jeong-Seok ChoiYun-Je OhDae-Kwang JungHong-Seok ShinKyung-Woo LeeDong-Jae ShinSung-Bum Park
    • H04B10/00
    • H04B10/116H04B10/1149
    • Provided is an apparatus and method for transmitting and receiving data in a visible light communication system, the apparatus including a visible light communication (VLC) transceiver for converting a visible light signal received from a counterpart into an electrical signal and outputting the electrical signal, by using a light receiving device during a reception operation, and converting an electrical signal containing information into a visible light signal and transmitting the visible light signal to the counterpart, by using a light emitting device during a transmission operation, a VLC controller comprising a visible frame engine (VFE) for generating a visible frame and outputting the visible frame to the VLC transceiver, in which the VFE generates the visible frame for transmission to a counterpart during non-transmission of respective frames for communication at a sender and a receiver in order to provide visibility to a communication link, and a host controller for controlling the VLC controller and transmitting and receiving data to and from the VLC controller.
    • 提供了一种用于在可见光通信系统中发送和接收数据的装置和方法,该装置包括可见光通信(VLC)收发器,用于将从对方接收的可见光信号转换为电信号并输出​​电信号,通过 在接收操作期间使用光接收装置,并且在传输操作期间通过使用发光装置将包含信息的电信号转换成可见光信号并将可见光信号发送到对方,VLC控制器包括可见帧 发动机(VFE),用于产生可见帧并将可见帧输出到VLC收发器,其中VFE在不发送用于在发送器和接收器处通信的各个帧期间产生用于传输到对方的可见帧,以便 提供对通信链路的可见性,以及用于控制的主机控制器 g VLC控制器,并向VLC控制器发送和接收数据。
    • 85. 发明授权
    • RoF system providing HD wireless communication service and signal control method for the same
    • RoF系统提供高清无线通信服务和信号控制方法相同
    • US08417116B2
    • 2013-04-09
    • US12074999
    • 2008-03-06
    • Sang-Ho KimSeong-Taek HwangYun-Je OhByung-Jik Kim
    • Sang-Ho KimSeong-Taek HwangYun-Je OhByung-Jik Kim
    • H04B10/00H04B10/24
    • H04B10/25758
    • Disclosed is an RoF system providing an HD wireless communication service. The RoF system includes the base station for transmitting and receiving each of the TDD/FDD individual signals and TDD/FDD combined signals, channel-combining downstream signals for a TDD scheme with downstream signals for an FDD scheme, and generating TDD/FDD mode control signals; a base station donor for receiving downstream RF signals from the base station, converting the resultant signals into downstream optical signals, outputting the converted signals, and delivering upstream optical signals, which are input to the remote station from the wireless terminals, to the base station; and the remote station for switching a corresponding duplexing mode operation according to wireless service channel states of the wireless terminals, converting the downstream optical signals transmitted from the base station donor into service RF signals, amplifying the converted service RF signals, and providing the amplified service RF signals to the wireless terminals through antennas.
    • 公开了提供HD无线通信服务的RoF系统。 RoF系统包括用于发送和接收每个TDD / FDD单独信号和TDD / FDD组合信号的基站,用于TDD方案的下行信号与用于FDD方案的下行信号的信道合并,以及生成TDD / FDD模式控制 信号; 用于从基站接收下行RF信号的基站施加器,将所得到的信号转换成下行光信号,输出转换的信号,以及将从远端站输入的上行光信号从无线终端传送到基站 ; 以及远程站,用于根据无线终端的无线服务信道状态切换相应的双工模式操作,将从基站捐赠者发送的下行光信号转换成服务RF信号,放大转换后的服务RF信号,并提供放大服务 RF信号通过天线到无线终端。
    • 88. 发明授权
    • H.264 decoder equipped with multiple operation units and method for decoding compressed image data thereof
    • 具有多个操作单元的H.264解码器及其压缩图像数据的解码方法
    • US08204132B2
    • 2012-06-19
    • US11904700
    • 2007-09-28
    • Kwang-Pyo ChoiYun-Je OhYoung-Hun Joo
    • Kwang-Pyo ChoiYun-Je OhYoung-Hun Joo
    • H04N11/02
    • H04N19/176H04N19/436H04N19/44H04N19/61
    • Disclosed is an H.264 decoder equipped with multiple operation units, and a method for decoding compressed image data using same. The decoder comprises a plurality of operation units that successively perform a Variable Length Decoding (VLD) operation, an Inverse Transform & DeQuantization (ITDQ) operation, and an intra PREDiction & inter PREDiction (PRED) operation with respect to a macroblock for which each operation unit is to perform a decoding operation, on receiving information on a macroblock, for which each operation unit is to carry out the decoding operation, with reference to a synchronization information storage unit. When the VLD, ITDQ, and PRED operations have been completed with respect to all macroblocks, the synchronization information storage unit is initialized, and the multiple operation units perform Deblocking Filter (DF) operations with respect to macroblocks for which the operation units are to carry out the DF operations respectively, and then, complete decoding of compressed image data currently received.
    • 公开了配备有多个操作单元的H.264解码器,以及使用其解码压缩图像数据的方法。 解码器包括多个操作单元,它们相对于每个操作的宏块依次执行可变长度解码(VLD)操作,逆变换和去量化(ITDQ)操作以及内部PREDATION&PREDEDATION(PRED)操作 单元是参照同步信息存储单元接收关于每个操作单元将执行解码操作的宏块上的信息的解码操作。 当相对于所有宏块完成​​VLD,ITDQ和PRED操作时,同步信息存储单元被初始化,并且多个操作单元针对操作单元将携带的宏块执行解块滤波(DF)操作 分别进行DF操作,然后对当前接收的压缩图像数据进行完整解码。
    • 89. 发明授权
    • Method for interpolating chrominance signal in video encoder and decoder
    • 在视频编码器和解码器中内插色度信号的方法
    • US08189672B2
    • 2012-05-29
    • US11893811
    • 2007-08-17
    • Kwang-Pyo ChoiYun-Je OhYoung-Hun Joo
    • Kwang-Pyo ChoiYun-Je OhYoung-Hun Joo
    • H04B1/66
    • H04N19/523H04N19/117H04N19/136H04N19/186H04N19/43
    • Disclosed is a method for interpolating chrominance signals in a video encoder and a decoder. The method includes the steps of accessing a memory unit to load an integer pixel value with regard to a plurality of motion compensation blocks, searching for a location of a motion vector s to perform sub-pixel interpolation of chrominance signals regarding the blocks and performing ¼ sub-pixel interpolation by row-based and column-based shifting when the motion vector indicates a ¼ location pixel with regard to the blocks. Also disclosed is an apparatus for performing the interpolating method described and a computer program product which when loaded into a computer system performs the interpolating method described.
    • 公开了一种用于在视频编码器和解码器中内插色度信号的方法。 该方法包括以下步骤:访问存储器单元以加载关于多个运动补偿块的整数像素值,搜索运动矢量s的位置以执行关于块的色度信号的子像素插值,并执行1/4 当运动矢量指示关于块的1/4位置像素时,通过基于行和列的移位进行子像素插值。 还公开了一种用于执行所描述的内插方法的装置和当被加载到计算机系统中时执行所描述的内插方法的计算机程序产品。
    • 90. 发明授权
    • Method for controlling handoff in optical distributed network system using multi input multi output
    • 使用多输入多输出控制光分布式网络系统切换的方法
    • US08126467B2
    • 2012-02-28
    • US11623791
    • 2007-01-17
    • Do-In ChoiSeong-Taek HwangYun-Je Oh
    • Do-In ChoiSeong-Taek HwangYun-Je Oh
    • H04W36/00
    • H04W36/18
    • A method for controlling a handoff in an optical distributed network system using MIMO (multi input multi output) is disclosed. The method includes steps of classifying a channel into a first channel and a second channel, and setting an active cell, receiving and measuring a signal strength of a predetermined cell, and determining on/off of the predetermined cell, when the predetermined cell turns on, releasing the first channel of the active cell, switching a path to a first channel of the predetermined cell, and keeping the second channel of the active cell, receiving and measuring a signal strength of the active cell, and when the measured signal strength is a preset critical value or less, turning off the active cell and when the active cell turns off, releasing the second channel of the active cell, and switching the path to a second channel of the predetermined cell.
    • 公开了一种使用MIMO(多输入多输出)控制光分布式网络系统中切换的方法。 该方法包括以下步骤:将信道分类为第一信道和第二信道,并且当预定小区接通时,设置活动小区,接收和测量预定小区的信号强度,以及确定预定小区的开/关 释放活动小区的第一信道,切换到预定小区的第一信道的路径,并保持活动小区的第二信道,接收并测量活动小区的信号强度,并且当测得的信号强度为 预设的临界值或更小,关闭活动小区,并且当活动小区关闭时,释放活动小区的第二信道,并将路径切换到预定小区的第二信道。