公开(公告)号：US09460113B2

公开(公告)日：2016-10-04

申请号：US13243684

申请日：2011-09-23

申请人： Byoung Hak Kim ,  Chae Hyun Lee

发明人： Byoung Hak Kim ,  Chae Hyun Lee

IPC分类号： G06F17/30

CPC分类号： G06F17/30241

摘要： According to exemplary embodiments of the invention, a location-based keyword recommending system and method are provided. The location-based keyword recommending system may include a keyword collecting unit to store location information regarding a location where a keyword is input, a region setting unit to set a virtual region by performing clustering of the location information with reference to the keyword, a region combining unit to combine virtual regions overlapping each other into one virtual region, and a keyword recommending unit to provide a location-based keyword based on the keyword related to the location information of the virtual region.

摘要翻译： 根据本发明的示例性实施例，提供了基于位置的关键字推荐系统和方法。 基于位置的关键字推荐系统可以包括：关键词收集单元，用于存储关于输入关键词的位置的位置信息;区域设定单元，通过参照该关键字进行位置信息的聚类来设定虚拟区域;区域 组合单元将彼此重叠的虚拟区域组合成一个虚拟区域;以及关键字推荐单元，基于与虚拟区域的位置信息相关的关键字来提供基于位置的关键字。

公开(公告)号：US08407233B2

公开(公告)日：2013-03-26

申请号：US11953769

申请日：2007-12-10

申请人： Ki Ho Song ,  Byoung Hak Kim ,  Min uk Kim ,  Tae Yeong Kwak

发明人： Ki Ho Song ,  Byoung Hak Kim ,  Min uk Kim ,  Tae Yeong Kwak

IPC分类号： G06F7/00 ,  G06F17/30

CPC分类号： G06F17/30622 ,  G06F17/30687

摘要： A method and system for calculating a relevance between words using a document set is provided. The method of calculating the relevance between words based on a document set, includes: obtaining statistical information about the words based on at least one of the words, documents, a word classification of the words, and a document classification of the documents, wherein the words and the documents are included in the document set; standardizing the statistical information; and calculating the relevance between the words based on the standardized statistical information.

摘要翻译： 提供了一种用于计算使用文档集合的单词之间的相关性的方法和系统。 计算基于文档集合的单词之间的相关性的方法包括：基于文字中的至少一个单词获取关于单词的统计信息，单词的单词分类以及文档的文档分类，其中， 单词和文件包含在文档集中; 规范统计资料; 并根据标准统计信息计算单词之间的相关性。

公开(公告)号：US20130070750A1

公开(公告)日：2013-03-21

申请号：US13600269

申请日：2012-08-31

申请人： Byoung Hak KIM ,  Jaehwan KIM ,  Mi Kyung OH ,  Sangjae LEE ,  Seung Sik LEE ,  cheol-ho SHIN ,  Young Ae JEON ,  Sangsung CHOI

发明人： Byoung Hak KIM ,  Jaehwan KIM ,  Mi Kyung OH ,  Sangjae LEE ,  Seung Sik LEE ,  cheol-ho SHIN ,  Young Ae JEON ,  Sangsung CHOI

IPC分类号： H04W56/00

CPC分类号： H04W56/0035 ,  H04W56/0085

摘要： In a local wireless communication system, a reception signal including an STF (short training field) in which a plurality of patterns are repeatedly transmitted is received, the STF including a first number of STF patterns and a second number of STF patterns, the second number of STF patterns having an opposite code to that of the first number of STF patterns. In a first frequency offset estimation and correction process and a second frequency offset estimation and correction process, frequency offset estimation is performed on a plurality of STF patterns to acquire a phase error of each sample constituting the STF patterns, and the frequency of the STF patterns is corrected based on the acquired phase error. Cross correlation is performed on a predetermined number of STF patterns, among a plurality of STF patterns output subsequent to the frequency offset estimation and correction, to detect frame timing.

摘要翻译： 在本地无线通信系统中，接收包括多个模式被重复发送的STF（短训练场）的接收信号，STF包括第一数量的STF模式和第二数量的STF模式，第二数量 的STF图案具有与第一数量的STF图案相反的代码。 在第一频率偏移估计和校正处理和第二频率偏移估计和校正处理中，对多个STF模式执行频率偏移估计，以获取构成STF模式的每个样本的相位误差，以及STF模式的频率 基于所获取的相位误差来校正。 在频率偏移估计和校正之后输出的多个STF模式中，对预定数量的STF模式执行交叉相关，以检测帧定时。

公开(公告)号：US20120102034A1

公开(公告)日：2012-04-26

申请号：US13243684

申请日：2011-09-23

申请人： Byoung Hak KIM ,  Chae Hyun LEE

发明人： Byoung Hak KIM ,  Chae Hyun LEE

IPC分类号： G06F17/30

CPC分类号： G06F17/30241

摘要： According to exemplary embodiments of the invention, a location-based keyword recommending system and method are provided. The location-based keyword recommending system may include a keyword collecting unit to store location information regarding a location where a keyword is input, a region setting unit to set a virtual region by performing clustering of the location information with reference to the keyword, a region combining unit to combine virtual regions overlapping each other into one virtual region, and a keyword recommending unit to provide a location-based keyword based on the keyword related to the location information of the virtual region.

摘要翻译： 根据本发明的示例性实施例，提供了基于位置的关键字推荐系统和方法。 基于位置的关键字推荐系统可以包括：关键词收集单元，用于存储关于输入关键词的位置的位置信息;区域设定单元，通过参照该关键字进行位置信息的聚类来设定虚拟区域;区域 组合单元将彼此重叠的虚拟区域组合成一个虚拟区域;以及关键字推荐单元，基于与虚拟区域的位置信息相关的关键字来提供基于位置的关键字。

公开(公告)号：US08165254B2

公开(公告)日：2012-04-24

申请号：US12201084

申请日：2008-08-29

申请人： Cheol Ho Shin ,  Byoung Hak Kim ,  Sang Sung Choi ,  Kwang Rho Park

发明人： Cheol Ho Shin ,  Byoung Hak Kim ,  Sang Sung Choi ,  Kwang Rho Park

IPC分类号： H04L7/00

CPC分类号： H04L27/2665 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675

摘要： The present invention relates to an apparatus and a method for receiving signal for extent of timing synchronization in MB-OFDM UWB System. The invention divides the digital samples completed of sampling twice as much as minimum sampling clock required to restore the MB-OFDM received signal into ODD data path and EVEN data path, executes the packet detection and timing synchronization for each of divided path and selects the data of path with larger cross correlation value at the timing synchronization point to secure the stable receiving performance in system environment with severe frequency offset and prevent the FTT window shift within preamble section through adding minimum hardware and structural change without increasing the system clock.

摘要翻译： 本发明涉及一种用于在MB-OFDM UWB系统中接收定时同步程度的信号的装置和方法。 本发明将采样完成的数字采样与将数据采集信号恢复为ODD数据路径和EVEN数据通路所需的最小采样时钟相同，执行分割路径每个分组检测和定时同步，并选择数据 的路径在定时同步点具有较大的互相关值，以确保具有严重频率偏移的系统环境中的稳定接收性能，并且通过在不增加系统时钟的情况下添加最小硬件和结构变化来防止前导码部分内的FTT窗口偏移。

公开(公告)号：US20080273585A1

公开(公告)日：2008-11-06

申请号：US12094851

申请日：2006-09-11

申请人： Pan-Soo Kim ,  Byoung-Hak Kim ,  Yun-Jeong Song ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

发明人： Pan-Soo Kim ,  Byoung-Hak Kim ,  Yun-Jeong Song ,  Deock-Gil Oh ,  Ho-Jin Lee ,  Jun Heo ,  Joong-Gon Ryoo

IPC分类号： H04B17/00 ,  H04L7/00

CPC分类号： H04L27/0014 ,  H04L2027/0057 ,  H04L2027/0067

摘要： Provided are an apparatus for estimating a phase error and a phase error correcting system using the phase error estimating apparatus. The apparatus includes: a probability value estimating unit for estimating a negative log probability value for each transmission symbol by transforming a soft output information transferred from the outside to a log A posterior probability ratio (LAPPR) value; an APP value calculating unit for calculating a posterior probability (APP) value by applying a negative exponential function to the transmission symbol; an average value deciding unit for deciding an average value for each transmission symbol using the probability information entirely, partially, or selectively according to a probability information type; and a symbol phase estimating unit for estimating a phase of a symbol based on the decided average value.

摘要翻译： 提供了一种使用相位误差估计装置估计相位误差的装置和相位误差校正系统。 该装置包括：概率值估计单元，用于通过将从外部传送的软输出信息变换为对数A后验概率比（LAPPR）值来估计每个发送符号的负对数概率值; APP值计算单元，用于通过对发送符号应用负指数函数来计算后验概率（APP）值; 平均值确定单元，用于根据概率信息类型完全，部分或选择地使用概率信息来确定每个传输符号的平均值; 以及符号相位估计单元，用于基于所确定的平均值来估计符号的相位。

公开(公告)号：US06582644B2

公开(公告)日：2003-06-24

申请号：US10035294

申请日：2002-01-04

申请人： Ik Soo Kim ,  Jong Soo Ahn ,  Byoung Hak Kim

发明人： Ik Soo Kim ,  Jong Soo Ahn ,  Byoung Hak Kim

IPC分类号： D01F208

CPC分类号： D01F2/00 ,  D01D5/24 ,  D01F2/28 ,  Y10T428/2913 ,  Y10T428/2965 ,  Y10T428/2975

摘要： Disclosed is a simple and safe method for producing hollow rayon fibers, which are light and heat-insulating. The fibers, having a cross section of FIG. 1, are produced by forming a cellulose layer with a mixed crystalline structure of cellulose II and IV through selective saponification of a portion of cellulose acetate fibers with the use of alkali, followed by dissolving a portion which remains unsaponified, with the use of an organic solvent.

公开(公告)号：US09246725B2

公开(公告)日：2016-01-26

申请号：US13605230

申请日：2012-09-06

申请人： Mi Kyung Oh ,  Young Ae Jeon ,  Sangjae Lee ,  Jaehwan Kim ,  Cheol-ho Shin ,  Byoung Hak Kim ,  Seung Sik Lee ,  Sangsung Choi ,  Jae Young Kim

发明人： Mi Kyung Oh ,  Young Ae Jeon ,  Sangjae Lee ,  Jaehwan Kim ,  Cheol-ho Shin ,  Byoung Hak Kim ,  Seung Sik Lee ,  Sangsung Choi ,  Jae Young Kim

IPC分类号： H04L27/12 ,  H04L27/14 ,  H04L1/00

CPC分类号： H04L27/12 ,  H04L1/0009 ,  H04L1/0054 ,  H04L1/0059 ,  H04L1/007 ,  H04L1/0071 ,  H04L1/0072 ,  H04L27/14

摘要： A method of generating a packet for low energy critical infrastructure monitoring (LECIM) wireless communication is provided. The method includes steps of generating a first bit string by multiplexing a physical layer header (PHR) bit and a physical layer service data unit (PSDU) bit; convolution encoding the first bit string; interleaving the convolution-encoded first bit string; generating a second bit string by multiplexing the interleaved first bit string with a synchronization header (SHR) bit; and modulating the second bit string with a frequency shift keying (FSK) method and a position-based FSK method.

摘要翻译： 提供了一种生成用于低能量关键基础设施监控（LECIM）无线通信的数据包的方法。 该方法包括以下步骤：通过复用物理层报头（PHR）比特和物理层业务数据单元（PSDU）比特来生成第一比特串; 卷积编码第一个位串; 交织卷积编码的第一位串; 通过将交织的第一比特串与同步头（SHR）比特进行复用来产生第二比特串; 并用频移键控（FSK）方法和基于位置的FSK方法调制第二位串。

公开(公告)号：US20130043920A1

公开(公告)日：2013-02-21

申请号：US13589629

申请日：2012-08-20

申请人： Seung Sik LEE ,  Sangsung CHOI ,  Young Ae JEON ,  Sangjae LEE ,  Byoung Hak KIM ,  Mi Kyung OH ,  Cheol-ho SHIN ,  Kang-yoon LEE ,  YoungGun PU ,  Joon-Sung PARK

发明人： Seung Sik LEE ,  Sangsung CHOI ,  Young Ae JEON ,  Sangjae LEE ,  Byoung Hak KIM ,  Mi Kyung OH ,  Cheol-ho SHIN ,  Kang-yoon LEE ,  YoungGun PU ,  Joon-Sung PARK

IPC分类号： H03L7/093

CPC分类号： H03L7/0992

摘要： A digital phase-locked loop apparatus using FSK includes a PFD detecting phase differences between a reference clock and a frequency-divided signal, and a first adder for generating first digital control codes by adding first digital codes, second digital codes, and channel frequency codes including channel information to each other, the first digital codes being converted from time differences between first and second pulses. The apparatus further includes a digital filter correcting errors of the first digital control codes to generate second digital control codes, a DCO for varying an oscillating frequency in accordance with a digital tuning word based on the second digital control codes, and a dual modulus division unit dividing the oscillating frequency into a frequency-divided signal.

摘要翻译： 使用FSK的数字锁相环装置包括PFD检测参考时钟和分频信号之间的相位差，以及第一加法器，用于通过将第一数字码，第二数字码和频道频率码相加来产生第一数字控制码 包括彼此的信道信息，所述第一数字码从第一和第二脉冲之间的时间差转换。 该装置还包括校正第一数字控制码的误差以产生第二数字控制码的数字滤波器，用于根据第二数字控制码根据数字调谐字改变振荡频率的DCO，以及双模分割单元 将振荡频率分频成分频信号。

公开(公告)号：US08300676B2

公开(公告)日：2012-10-30

申请号：US12536929

申请日：2009-08-06

申请人： Cheol-Ho Shin ,  Byoung Hak Kim ,  Jong Won Kim ,  Sangsung Choi ,  Kwang Roh Park

发明人： Cheol-Ho Shin ,  Byoung Hak Kim ,  Jong Won Kim ,  Sangsung Choi ,  Kwang Roh Park

IPC分类号： H04B1/00

CPC分类号： H04L27/0006

摘要： A communication apparatus generates a digital detection signal including a plurality of time symbols by digital-converting a detection signal corresponding to a received signal, estimates an average power value of the detection signal by calculating average power of the digital detection signal based on the digital detection signal, and performs UWB communication through a predetermined first channel when a predetermined reference power value is greater than the average power value.

摘要翻译： 通信装置通过对与接收信号相对应的检测信号进行数字转换来生成包括多个时间符号的数字检测信号，通过基于数字检测来计算数字检测信号的平均功率来估计检测信号的平均功率值 信号，并且当预定参考功率值大于平均功率值时，通过预定的第一通道执行UWB通信。