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：US08122315B2

公开(公告)日：2012-02-21

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：US20070130598A1

公开(公告)日：2007-06-07

申请号：US11607637

申请日：2006-11-30

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

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

IPC分类号： H04N7/173 ,  H04N7/18 ,  H04N7/16 ,  H04N7/20

CPC分类号： H04L12/2803 ,  H04B3/54 ,  H04B2203/5441 ,  H04B2203/5445 ,  H04L12/2801 ,  H04L12/2818 ,  H04L2012/2841 ,  H04L2012/2843 ,  H04N21/4131 ,  H04N21/4227 ,  H04N21/4355 ,  H04N21/43615 ,  H04N21/478 ,  H04N21/6143 ,  H04N21/6193 ,  H04N21/6547

摘要： Provided is a digital satellite broadcasting set-top box and a home network control system employing the same. The set-top box includes: a satellite signal receiving unit for receiving a satellite signal including a home network control signal for controlling the household appliances through a satellite broadcasting network from a remote terminal; and a control unit for extracting a household appliances control signal included in the satellite signal transmitted from the satellite signal receiving unit and commanding a power line converter to transmit the household appliances control signal to a corresponding household appliance, wherein the power line converter converts the household appliances control signal transmitted from the digital satellite broadcasting set-top box into a power line communication signal and transmits the power line communication signal on the home network through a power line.

摘要翻译： 提供了一种数字卫星广播机顶盒和采用其的家庭网络控制系统。 机顶盒包括：卫星信号接收单元，用于通过卫星广播网络从远程终端接收包括用于控制家用电器的家庭网络控制信号的卫星信号; 以及控制单元，用于提取从卫星信号接收单元发送的卫星信号中包含的家用电器控制信号，并指示电力线转换器将家用电器控制信号发送到相应的家用电器，其中电力线转换器将家庭 家用电器控制信号从数字卫星广播机顶盒发送到电力线通信信号，并通过电力线在家庭网络上发送电力线通信信号。

公开(公告)号：US08422604B2

公开(公告)日：2013-04-16

申请号：US12518103

申请日：2007-10-30

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

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

IPC分类号： H03D1/00

CPC分类号： H04L27/2656 ,  H04L7/042 ,  H04L27/2675

摘要： Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system, which acquires an estimated value for detecting frame structure and frame sync and overcomes distortion of correlation analysis values by summing differential correlation values for SOF positions in consideration of the variable frame length, and selecting a maximum value in a channel environment with low signal-to-noise ratio and high frequency error. SOF is a sync word indicating the start point of a frame. The method includes the steps of: acquiring SOF differential correlation value sequences; acquiring sums (di,t) of the correlation values normalized for SOF positions based on the number of symbols per frame by using the above-generated SOF differential correlation value sequences; and selecting a maximum value (dz,x) among the sums of correlation values, detecting z as a frame sync position, and detecting x as a frame structure index.

摘要翻译： 提供了一种用于检测卫星广播系统中的帧同步和帧结构的方法，其获取用于检测帧结构和帧同步的估计值，并通过将SOF位置的差分相关值相加考虑到可变帧来克服相关分析值的失真 长度，并在低信噪比和高频误差的信道环境中选择最大值。 SOF是指示帧起始点的同步字。 该方法包括以下步骤：获取SOF差分相关值序列; 通过使用上述生成的SOF差分相关值序列，基于每帧的符号数，获取针对SOF位置归一化的相关值的和（di，t） 并且选择相关值之和中的最大值（dz，x），检测z作为帧同步位置，并且检测x作为帧结构索引。

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：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：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。

公开(公告)号：US07761777B2

公开(公告)日：2010-07-20

申请号：US11518247

申请日：2006-09-11

申请人： In-Ki Lee ,  Dae-Ig Chang ,  Deock-Gil Oh

发明人： In-Ki Lee ,  Dae-Ig Chang ,  Deock-Gil Oh

IPC分类号： H03M13/00

CPC分类号： H04L27/3488 ,  H04L1/005 ,  H04L1/0053 ,  H04L1/0057 ,  H04L1/08 ,  H04L25/067

摘要： A soft decision demapping method includes defining distance values between a received signal and coordinates of constellation dots, obtaining a difference between a maximum value of distance values when a first bit is 0 and a maximum value of distance values when the first bit is 1, during a soft decision of the first bit of N-bit received signal symbol, acquiring a difference between a maximum value of distance values when a second bit is 0 and a maximum value of distance values when the second bit is 1, during a soft decision of the second bit of the N-bit received signal symbol, and deriving a difference between a maximum value of distance values when an Nth bit is 0 and a maximum value of distance values when the Nth bit is 1, during a soft decision of the Nth bit of the N-bit received signal symbol.

摘要翻译： 软判决解映射方法包括：定义接收信号和星座点坐标之间的距离值，获得当第一位为0时距离值的最大值与第一位为1时距离值的最大值之间的差值 在第二比特为0时获取第一比特的距离值的最大值与第二比特为1时的距离值的最大值之间的差的软判决， N位接收信号符号的第二位，并且在第N位的软判决期间得出第N位为0时的距离值的最大值与第N位为1时的距离值的最大值之间的差 位的N位接收信号符号。

公开(公告)号：US07587653B2

公开(公告)日：2009-09-08

申请号：US11442363

申请日：2006-05-26

申请人： Pan-Soo Kim ,  Dae-Ig Chang ,  In-Ki Lee ,  Tae-Hoon Kim ,  Deock-Gil Oh ,  Wonjin Sung ,  Seokheon Kang ,  Deokchang Kang

发明人： Pan-Soo Kim ,  Dae-Ig Chang ,  In-Ki Lee ,  Tae-Hoon Kim ,  Deock-Gil Oh ,  Wonjin Sung ,  Seokheon Kang ,  Deokchang Kang

IPC分类号： H03M13/05

CPC分类号： H04L1/0045 ,  H03M13/136 ,  H03M13/15 ,  H03M13/6561 ,  H04H40/90 ,  H04L1/0057 ,  H04L1/0072 ,  H04L1/08

摘要： Provided is a decoding method for detecting Physical Layer Signaling Codes (PLSCs) from frames of a satellite broadcasting system. The method includes: a) acquiring a summation vector and a subtraction vector from an inputted symbol vector; b) performing parallel Reed-Muller (32,6) decoding onto the summation and subtraction vectors based on a Hadamard matrix and estimating message bits of the summation and subtraction vectors; c) performing PLSC coding and modulation onto the message bits of the summation and subtraction vectors; d) calculating a first difference between symbols of the received symbol vector and the summation vector symbols, and a second difference between the symbols of the received symbol vector and the subtraction vector symbols; and e) when the first difference is smaller than the second difference, determining a Reed-Muller codeword is repeated, or when the first difference is larger than the second difference, determining that the Reed-Muller codeword is inverted.

摘要翻译： 提供了一种从卫星广播系统的帧中检测物理层信令码（PLSC）的解码方法。 该方法包括：a）从输入的符号向量获取求和向量和减法向量; b）基于Hadamard矩阵对求和和减法向量执行并行Reed-Muller（32,6）解码并估计求和和减法向量的消息比特; c）对求和和减法向量的消息比特执行PLSC编码和调制; d）计算接收的符号向量和求和向量符号的符号之间的第一差值，以及接收到的符号向量和减法向量符号的符号之间的第二差值; 以及e）当第一差小于第二差时，重复确定里德 - 穆勒码字，或者当第一差大于第二差时，确定里德 - 穆勒码字被反转。