公开(公告)号：US20100278192A1

公开(公告)日：2010-11-04

申请号：US12808110

申请日：2008-06-27

申请人： Keun-Pyo Hong ,  Hokyom Kim ,  Dae-Ig Chang

发明人： Keun-Pyo Hong ,  Hokyom Kim ,  Dae-Ig Chang

IPC分类号： H04J3/00

CPC分类号： H04J4/005 ,  H04B7/18513 ,  H04B7/212

摘要： Provided is a channel data multiplexing apparatus and method for supporting a variable transmission rate. The channel data multiplexing apparatus includes an input memory for receiving multi-channel baseband data in parallel and storing the baseband data at a first clock rate; an output memory for reading the baseband data stored in the input memory at a second clock rate and storing the baseband data; a multiplexing unit for reading the baseband data stored in the output memory in channel sequence at a third clock rate and outputting the baseband data in serial; and a control unit for controlling address processing and clock rates for data read/write (storage) from/in the input and the output memories and the multiplexing unit depending on a transmission mode.

摘要翻译： 提供一种用于支持可变传输速率的信道数据多路复用装置和方法。 信道数据多路复用装置包括并行接收多信道基带数据并以第一时钟速率存储基带数据的输入存储器; 输出存储器，用于以第二时钟速率读取存储在输入存储器中的基带数据并存储基带数据; 多路复用单元，用于以第三时钟速率以通道序列读出存储在输出存储器中的基带数据，并串行输出基带数据; 以及控制单元，用于根据传输模式来控制来自/在输入和输出存储器和复用单元中的数据的读/写（存储）的地址处理和时钟速率。

公开(公告)号：US20100007743A1

公开(公告)日：2010-01-14

申请号：US12518242

申请日：2007-10-31

申请人： Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Sangtae Kim ,  Seokheon Kang ,  Wonjin Sung

发明人： Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Sangtae Kim ,  Seokheon Kang ,  Wonjin Sung

IPC分类号： H04N17/00

CPC分类号： H04N21/4382 ,  H04H40/90 ,  H04L7/042 ,  H04L27/2656 ,  H04N7/20 ,  H04N21/238 ,  H04N21/2383 ,  H04N21/242 ,  H04N21/6143

摘要： Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system. The method for detecting frame sync and frame structure includes the steps of: calculating differential correlation values of reception symbols; generating index sequences of reception symbols whose differential correlation values calculated above exceed a threshold value; calculating positions estimated as frame start points which correspond to a total frame number based on the number of symbols per frame for each frame structure; and detecting frame sync and frame structure based on the umber of positions where the above-calculated frame start point estimated positions and the above-generated index sequences are matched.

摘要翻译： 提供了一种用于在卫星广播系统中检测帧同步和帧结构的方法。 用于检测帧同步和帧结构的方法包括以下步骤：计算接收符号的差分相关值; 产生上述计算出的差分相关值的接收符号的索引序列超过阈值; 基于每个帧结构的每个符号的数量，计算估计为与总帧数相对应的帧起始点的位置; 以及基于上述计算出的帧起始点估计位置和上述生成的索引序列匹配的位置的数量来检测帧同步和帧结构。

公开(公告)号：US20080285685A1

公开(公告)日：2008-11-20

申请号：US12096119

申请日：2006-12-07

申请人： Dae-Ig Chang ,  Deock-Gil Oh ,  Kwang-Min Hyun ,  Dong-Weon Yoon ,  Sang-Kyu Park

发明人： Dae-Ig Chang ,  Deock-Gil Oh ,  Kwang-Min Hyun ,  Dong-Weon Yoon ,  Sang-Kyu Park

IPC分类号： H04L27/38

CPC分类号： H04L25/067 ,  H04L1/005 ,  H04L27/38

摘要： Provided are an apparatus and method for generating a soft bit metric and a multi-level (M-ary) Quadrature Amplitude Modulation (QAM) receiving system using the same. The apparatus includes an analog to digital converter for converting an analog symbol signal of a demodulated I (Inphase) or Q (Quadrature) channel into a digital signal, a sealer for scaling the converted digital signal based on a reference value used for determining a space between symbols, a positive integer converter for calculating a positive integer of the scaled digital I or Q channel symbol signal, a sign determinator for determining a sign of the scaled digital I or Q channel symbol signal, and a bit information converter for converting the scaled digital I or Q channel symbol signal into soft bit metric information per bit on the basis of the calculated positive integer and the determined sign value.

摘要翻译： 提供了一种用于生成软比特度量的装置和方法以及使用其的多级（M元）正交幅度调制（QAM）正交调制（QAM）接收系统。 该装置包括用于将解调的I（同相）或Q（正交）信道的模拟符号信号转换为数字信号的模数转换器，用于基于用于确定空间的参考值缩放转换的数字信号的缩放器 在符号之间，用于计算缩放的数字I或Q信道符号信号的正整数的正整数转换器，用于确定缩放的数字I或Q信道符号信号的符号的符号确定器，以及用于将缩放的 基于计算的正整数和确定的符号值，将数字I或Q通道符号信号转换为每位的软比特度量信息。

公开(公告)号：US20070150789A1

公开(公告)日：2007-06-28

申请号：US11607592

申请日：2006-11-30

申请人： Eun-A Choi ,  Dae-Ig Chang ,  Deock-Gil Oh

发明人： Eun-A Choi ,  Dae-Ig Chang ,  Deock-Gil Oh

IPC分类号： H03M13/00

CPC分类号： H03M13/1165 ,  H03M13/1111

摘要： Provided is a low-density parity-check (LDPC) decoding apparatus and method using a type-classified index. The apparatus includes: a memory allocating unit for multiplying reception data by an estimated channel value and storing a multiplied value in a memory including a plurality of memory block; an index storing unit for storing a Read Only Memory (ROM) index, an address index and a permutation index for the stored data; a check node updating unit for bring the stored data in parallel based on the ROM index, the address index, and the permutation index and updating a check node; and a bit node updating unit for updating a bit node based on the data stored in the memory and check node information updated in the check node updating unit.

摘要翻译： 提供了一种使用类型分类索引的低密度奇偶校验（LDPC）解码装置和方法。 该装置包括：存储器分配单元，用于将接收数据乘以估计的信道值，并将乘法值存储在包括多个存储块的存储器中; 索引存储单元，用于存储所存储的数据的只读存储器（ROM）索引，地址索引和置换索引; 检查节点更新单元，用于基于所述ROM索引，所述地址索引和所述置换索引并行存储所述数据，并更新校验节点; 以及位节点更新单元，用于基于存储在存储器中的数据更新位节点，并且校验在校验节点更新单元中更新的节点信息。

公开(公告)号：US08731126B2

公开(公告)日：2014-05-20

申请号：US12942350

申请日：2010-11-09

申请人： Joon-Gyu Ryu ,  Dae-Ig Chang

发明人： Joon-Gyu Ryu ,  Dae-Ig Chang

IPC分类号： H03D3/24 ,  H03L7/06

CPC分类号： H03L7/185 ,  H03L7/099 ,  H03L2207/12

摘要： A phase locked loop includes: a loop filter; a voltage controlled oscillating unit configured to output a frequency varying according to an output voltage of the loop filter; a frequency down-converting unit configured to down-convert an output frequency of the voltage controlled oscillating unit according to a band of the output frequency of the voltage controlled oscillating unit; and a frequency divider configured to divide a frequency down-converted by the frequency down-converting unit. The output frequency of the voltage controlled oscillating unit varies according to the output voltage of the loop filter and a control signal compensating the frequency down-converted by the frequency down-converting unit.

摘要翻译： 锁相环包括：环路滤波器; 电压控制振荡单元，被配置为输出根据所述环路滤波器的输出电压而变化的频率; 降频转换单元，被配置为根据压控振荡单元的输出频率的频带对压控振荡单元的输出频率进行下变频; 以及分频器，被配置为对由下变频单元进行下变频的频率进行分频。 电压控制振荡单元的输出频率根据环路滤波器的输出电压和补偿由下变频单元下变频的频率的控制信号而变化。

公开(公告)号：US08381063B2

公开(公告)日：2013-02-19

申请号：US12808319

申请日：2008-12-15

申请人： Euna Choi ,  Dae-Ig Chang ,  Kijoon Lee ,  Habong Jung

发明人： Euna Choi ,  Dae-Ig Chang ,  Kijoon Lee ,  Habong Jung

IPC分类号： H03M13/00

CPC分类号： H03M13/112 ,  H03M13/1165 ,  H03M13/658 ,  H03M13/6583

摘要： Provided is a decoding apparatus and method based on a variable error correction value. The decoding method includes setting an initial normalized factor and a normalized factor correction value, initially updating a check node based on the initial normalized factor, and updating the check node based on a variable error correction value acquired by adding the initial normalized factor and the normalized factor correction value.

摘要翻译： 提供了一种基于可变误差校正值的解码装置和方法。 解码方法包括设置初始归一化因子和归一化因子校正值，基于初始归一化因子最初更新校验节点，并且基于通过将初始归一化因子和归一化归一化因子相加获得的可变误差校正值来更新校验节点 因子校正值。

公开(公告)号：US08155041B2

公开(公告)日：2012-04-10

申请号：US12186670

申请日：2008-08-06

申请人： Hyun-Ha Hong ,  Ki-Seop Han ,  Dae-Ig Chang ,  Ho-Jin Lee

发明人： Hyun-Ha Hong ,  Ki-Seop Han ,  Dae-Ig Chang ,  Ho-Jin Lee

IPC分类号： H04W36/32

CPC分类号： H04L12/66 ,  H04W36/0016 ,  H04W36/14 ,  H04W40/36 ,  H04W80/04 ,  H04W84/005

摘要： Provided is a method for handover between heterogeneous networks using a link trigger signal in a multi-interface mobile router. The method includes: maintaining a state of a second network access interface in a sleep state, activating a first network access interface, receiving and transmitting the first network service to a subordinate node in the mobile router located in a first network; when the mobile router senses a second network link-up trigger signal while moving to the second network, changing the state of the second network access interface into an active state and performing handover; and receiving a second network service through the activated second network access interface in the mobile router performing the handover and transmitting the second network service to the subordinate node.

摘要翻译： 提供了一种使用多接口移动路由器中的链路触发信号在异构网络之间切换的方法。 该方法包括：将第二网络接入接口的状态保持在睡眠状态，激活第一网络接入接口，将第一网络服务接收并发送到位于第一网络中的移动路由器中的下级节点; 当移动路由器在移动到第二网络时感测到第二网络链接触发信号，将第二网络接入接口的状态改变为活动状态并执行切换; 以及通过执行切换的移动路由器中的激活的第二网络接入接口接收第二网络服务，并将第二网络服务发送到下级节点。

公开(公告)号：US07978732B2

公开(公告)日：2011-07-12

申请号：US12094325

申请日：2006-12-11

申请人： Pan-Soo Kim ,  In-Ki Lee ,  Tae-Hoon Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Won-Jin Sung ,  Deok-Chang Kang ,  Seok-Heon Kang

发明人： Pan-Soo Kim ,  In-Ki Lee ,  Tae-Hoon Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Won-Jin Sung ,  Deok-Chang Kang ,  Seok-Heon Kang

IPC分类号： H04J3/16

CPC分类号： H04L1/0003 ,  H04L1/0007 ,  H04L1/0009 ,  H04L1/0038 ,  H04L2001/0093 ,  H04N21/2343 ,  H04N21/2383 ,  H04N21/2404 ,  H04N21/4382

摘要： Provided are an apparatus and method for deciding a transmission format using a variable frame length and a decoding method using the same. The apparatus for deciding the transmission format using the variable frame length includes: a frame synchronization acquiring unit for acquiring a frame synchronization of a received transmission frame; a correlation analyzing unit for performing a correlation analysis with respect to the transmission frame whose synchronization is acquired, considering frame lengths of respective frame structures; and a transmission frame structure deciding unit for deciding the structure of the received transmission frame using the analyzed correlation. Accordingly, a physical layer signaling code (PLSC) demodulation and decoding performance can be enhanced by determining the structure of the transmitted frame without carrying out a PLSC decoding in such a state that a frequency synchronization is not acquired.

摘要翻译： 提供了一种使用可变帧长度来决定传输格式的装置和方法以及使用其的解码方法。 用于使用可变帧长度确定传输格式的装置包括：帧同步获取单元，用于获取接收到的传输帧的帧同步; 相关分析单元，考虑相应帧结构的帧长度，执行相对于获取同步的传输帧的相关分析; 以及传输帧结构决定单元，用于使用所分析的相关来确定所接收的传输帧的结构。 因此，通过在不获取频率同步的状态下确定发送帧的结构而不执行PLSC解码，可以增强物理层信令码（PLSC）解调和解码性能。

公开(公告)号：US07804918B2

公开(公告)日：2010-09-28

申请号：US11518218

申请日：2006-09-11

申请人： Tae-Hoon Kim ,  Seung-Hyun Choi ,  Cheon-In Oh ,  Pan-Soo Kim ,  Dae-Ig Chang

发明人： Tae-Hoon Kim ,  Seung-Hyun Choi ,  Cheon-In Oh ,  Pan-Soo Kim ,  Dae-Ig Chang

IPC分类号： H04L27/00

CPC分类号： H04L27/183

摘要： An apparatus for independently extracting streams from a hierarchically-modulated signal and performing a soft-decision, and a method thereof are provided. The apparatus includes: a synchronizing unit for receiving a hierarchically-modulated signal configured of an I-channel signal and a Q-channel signal from an external device and performing a synchronizing process on the received signal; a divaricating unit 410 for divaricating the synchronized signal configured of the I-channel signal and the Q-channel signal from the synchronizing unit; a high priority (HP) stream extracting and soft-decision unit for extracting a HP stream from one of the divaricated signals, and performing a soft-decision; a processing unit for processing the other of the divaricated signals to allow constellation points to be distinguished; and a low priority (LP) stream extracting and soft-decision unit for extracting a LP stream from the processed signal from the processing unit and performing a soft-decision.

摘要翻译： 提供一种用于从分层调制信号独立地提取流并执行软判决的装置及其方法。 该装置包括：同步单元，用于从外部装置接收由I信道信号和Q信道信号构成的分层调制信号，并对接收信号执行同步处理; 分离单元410，用于将由I信道信号构成的同步信号和来自同步单元的Q信道信号进行分解; 用于从分离信号中的一个提取HP流的高优先级（HP）流提取和软判决单元，并执行软判决; 处理单元，用于处理所述分离信号中的另一个以允许区分星座点; 以及用于从处理单元处理的信号中提取LP流并执行软判决的低优先级（LP）流提取和软判决单元。

公开(公告)号：US07720182B2

公开(公告)日：2010-05-18

申请号：US11636243

申请日：2006-12-08

申请人： Tae-Hoon Kim ,  Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Seong-Jun Lee

发明人： Tae-Hoon Kim ,  Pan-Soo Kim ,  Dae-Ig Chang ,  Deock-Gil Oh ,  Seong-Jun Lee

IPC分类号： H04L1/00

CPC分类号： H04B7/18523 ,  H04L27/2657 ,  H04L27/2672 ,  H04L27/2676

摘要： An apparatus and method for correcting a frequency offset in a satellite digital video broadcasting system includes a frequency response transformer for receiving a satellite digital video broadcasting signal and acquiring frequency responses divided into positive and negative frequency parts; a rotation/difference value calculation unit for selecting a frequency response inputted from the frequency response transformer and calculating a first value indicating a difference in area without rotation for the selected frequency response, and calculating a second value indicating a difference in area with rotation for the remaining frequency responses; a zero intersection point calculator for dividing an average slope of a straight line formed by the first and second values by the first value, and calculating a zero intersection point of an area difference value on the straight line; and a frequency offset estimator for correcting the zero intersection point to thereby estimate the frequency offset.

摘要翻译： 一种用于校正卫星数字视频广播系统中的频率偏移的装置和方法包括：频率响应变换器，用于接收卫星数字视频广播信号并获取被分为正，负频率部分的频率响应; 旋转/差值计算单元，用于选择从频率响应变换器输入的频率响应，并计算指示所选择的频率响应的不旋转的面积差的第一值，并且计算表示针对所选择的频率响应的旋转区域的差异的第二值 剩余频率响应; 零交叉点计算器，用于将由第一和第二值形成的直线的平均斜率除以第一值，并计算直线上面积差值的零交叉点; 以及用于校正零交叉点从而估计频率偏移的频率偏移估计器。