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1. 发明授权

US5883911A Surface-emitting laser device 失效
标题翻译：表面发射激光器件
公开(公告)号：US5883911A
公开(公告)日：1999-03-16
申请号：US742160
申请日：1996-11-01
申请人： Bun Lee , Jong-Hyeob Baek , Sung-Woo Choi , Jin-Hong Lee
发明人： Bun Lee , Jong-Hyeob Baek , Sung-Woo Choi , Jin-Hong Lee
IPC分类号： H01S3/00 , H01S5/183 , H01S5/32 , H01S5/34 , H01S5/343 , H01S3/19
CPC分类号： B82Y20/00 , H01S5/183 , H01S2301/173 , H01S5/1053 , H01S5/18319 , H01S5/3205 , H01S5/3215 , H01S5/3406 , H01S5/34313
摘要： An improved surface-emitting laser device by which the light emitting wave length can be easily varied since the electric potential grown using the thin film material having a desired lattice rate uses a very small portion of activation layers, and by which the continuous oscillation is made at room temperature by using the reflector having high reflective index. Thus, optical characteristics are increased, which includes a GaAs substrate; a lower reflector is formed of multiple layers of AlAs/GaAs heterogenous thin films having a reflective index of 1 on the GaAs substrate; a tooth-shaped grading layer is formed of a lower reflector on the lower reflector and an In.sub.x Ga.sub.1-x As thin film having a large lattice rate in a compositional grading method; a tooth-shaped InGaAs grading well is formed on the In.sub.x Ga.sub.1-x As grading layer as an In composition of which reduced rather than the grading layer; a buffer layer is formed on the In.sub.x Ga.sub.1-x As thin film and formed of a lattice-bonded InP; and an upper semiconductor reflector is formed on a multilayer of an InAlAs/InAlGaAs heterogenous thin film on the buffer layer, which has a reflective index of 1, in which a laser beam is emitted from the surface of the same.
摘要翻译：由于使用具有期望晶格率的薄膜材料生长的电位使用非常小部分的活化层，并且由此产生连续振荡，因此改进的表面发射激光器件可以容易地改变发光波长通过使用具有高反射率的反射器在室温下进行。因此，增加了包括GaAs衬底的光学特性; 在GaAs衬底上由反射率为1的多层AlAs / GaAs异质薄膜形成下反射体; 在下反射器上由下反射器形成的齿形分级层和在组成分级方法中具有大晶格率的In x Ga 1-x As薄膜; 在In x Ga 1-x As分级层上形成一个齿形的InGaAs分级阱，作为In组成减少而不是分级层; 在In x Ga 1-x As薄膜上形成缓冲层，由晶格键合的InP形成; 并且在缓冲层上的反射率为1的InAlAs / InAlGaAs异质薄膜的多层上形成上半导体反射器，其中从其表面发射激光束。

2. 发明授权

US5748319A Method for sensing complete removal of oxide layer from substrate by thermal etching with real time 失效
标题翻译：用于通过热蚀刻实时感测从衬底完全去除氧化物层的方法
公开(公告)号：US5748319A
公开(公告)日：1998-05-05
申请号：US671842
申请日：1996-06-28
申请人： Jong-Hyeob Baek , Bun Lee , Sung-Woo Choi , Jin-Hong Lee
发明人： Jong-Hyeob Baek , Bun Lee , Sung-Woo Choi , Jin-Hong Lee
IPC分类号： H01L21/302 , G01B11/06 , H01L21/3065
CPC分类号： G01B11/0683
摘要： A method for sensing the completion of removal of an oxide layer from a semiconductor substrate or a super conductor by a thermal etching in real time. In the method, the time of removal of the oxide layer on the semiconductor substrate or the super conductor can ben accurately sensed. According to the method, when an oxide layer which is different from the semiconductor substrate in the refractive index is being thermally etched at a high temperature, the reflected signals of the laser beams forms a periodicity, and this periodicity is utilized so as to determine the etching rate and the time of the completion of the etching.
摘要翻译：一种用于通过热蚀刻实时地感测从半导体衬底或超导体去除氧化物层的完成的方法。在该方法中，可以准确地感测去除半导体衬底或超导体上的氧化物层的时间。根据该方法，当在高温下热蚀刻与折射率不同的半导体衬底的氧化物层时，激光束的反射信号形成周期性，并且利用该周期性来确定蚀刻速率和蚀刻完成的时间。

3. 发明授权

US5705403A Method of measuring doping characteristic of compound semiconductor in real time 失效
标题翻译：实时测量化合物半导体掺杂特性的方法
公开(公告)号：US5705403A
公开(公告)日：1998-01-06
申请号：US696092
申请日：1996-08-13
申请人： Jong-Hyeob Baek , Bun Lee , Jin-Hong Lee , Sung-Woo Choi
发明人： Jong-Hyeob Baek , Bun Lee , Jin-Hong Lee , Sung-Woo Choi
IPC分类号： G01N21/17 , G01N21/31 , H01L21/205 , H01L21/66 , H01L33/30 , H01L21/00
CPC分类号： H01L21/02579 , H01L21/02395 , H01L21/02463 , H01L21/02546 , H01L21/0262
摘要： A method of sensing the concentration of a doped impurity on a semiconductor in real time and a method of sensing the change of its growth rate dependent on time among the changes of the growing conditions due to doping by using a real time analysis apparatus in growing a heterostructured semiconductor by a MOCVD method. A reflecting signal during the growth by means of a real time analysis apparatus has a periodic property, an amplitude change of a reflecting signal is dependent on an absorption coefficient when an absorption exists on an epitaxial layer, an impurity concentration can be obtained by using the relation of an absorption coefficient and an impurity concentration. In addition, if each peak is independently analyzed, the respective growth rate dependent on time are measured individually, so that the reduced growth rate dependent on time of the growth rate is sensed in a carbon doped AlAs layer.
摘要翻译：一种实时检测半导体掺杂杂质的浓度的方法，以及在生长中使用实时分析装置时由于掺杂而引起的生长条件变化之间的随时间的变化而检测其生长速度变化的方法通过MOCVD方法的异质结构半导体。通过实时分析装置生长期间的反射信号具有周期性质，当在外延层上存在吸收时，反射信号的振幅变化取决于吸收系数，可以通过使用吸收系数与杂质浓度的关系。另外，如果独立地分析每个峰，则分别测量相应于时间的生长速率，从而在碳掺杂的AlAs层中感测到依赖于生长速率的时间的降低的生长速率。

4. 发明授权

US5900056A Method for growing epitaxial layers of III-V compound semiconductors 失效
标题翻译：生长III-V族化合物半导体外延层的方法
公开(公告)号：US5900056A
公开(公告)日：1999-05-04
申请号：US769242
申请日：1996-12-18
申请人： Sung-Woo Choi , Jong-Hyeob Baek , Bun Lee
发明人： Sung-Woo Choi , Jong-Hyeob Baek , Bun Lee
IPC分类号： H01L21/20 , C30B25/10 , C30B25/14
CPC分类号： C30B25/105 , C30B29/40
摘要： The present invention relates to a method for growing new binary, ternary and quaternary epitaxial layers of III-V compound semiconductors which have the characteristics of low temperature growth, good stability and high-purity, using remote plasma, comprising the steps of converting H.sub.2 and He mixed gas into a plasma state; heating a high-purity of solid source to generate a vaporized source; reacting the vaporized source with H.sub.2 under the H.sub.2 and He plasma environment to produce V-hydrides in situ; introducing the V-hydrides directly into group III source without passing through the plasma; and reacting V-hydrides with group III source on a substrate to form an epitaxial thin layer of III-V compound semiconductors. According to the present invention, high-purity of epitaxial thin layer can be formed at a low temperature, an economical process that does not require an ultrahigh vacuum, a stabilized process that does not need to handle poisonous gas for the reaction with gropu V, and a simple process for manufacturing the various binary, ternary and quaternary compound semiconductor alloys can be provided. Thus, the method of the present invention can be applied to the future information and communication industry, for example, high speed, high frequency optical communication system with (Ga, In, Al)--(As, P, Sb) based on III-V compound semiconductor electronic and optical devices, and the circuitry thereof including heterojunction bipolar transistors, high electron mobility transistors, semiconductor lasers and optical switches.
摘要翻译：本发明涉及一种利用远程等离子体生长具有低温生长特性，稳定性好，高纯度等特点的III-V族化合物半导体二元，三元和四元外延层的方法，包括以下步骤：将H 2和他将气体混合成等离子体状态; 加热高纯度固体源以产生蒸发源; 在H 2和He等离子体环境下使蒸发源与H 2反应，原位产生V-氢化物; 将V型氢化物直接引入III族源而不通过等离子体; 并将V型氢化物与III族源反应在衬底上以形成III-V族化合物半导体的外延薄层。根据本发明，可以在低温下形成高纯度的外延薄层，不需要超高真空的经济工艺，不需要处理有毒气体用于与gropu V反应的稳定过程，并且可以提供制造各种二元，三元和四元化合物半导体合金的简单方法。因此，本发明的方法可以应用于将来信息通信行业，例如具有（Ga，In，Al） - （As，P，Sb）的高速，高频光通信系统， V化合物半导体电子和光学器件，其电路包括异质结双极晶体管，高电子迁移率晶体管，半导体激光器和光开关。

5. 发明申请

US20070133392A1 Method for adjusting FFT window positioning in MB-OFDM UWB system 失效
标题翻译：在MB-OFDM UWB系统中调整FFT窗口定位的方法
公开(公告)号：US20070133392A1
公开(公告)日：2007-06-14
申请号：US11635272
申请日：2006-12-07
申请人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
发明人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04J11/00 , H04J1/00
CPC分类号： H04B1/7183 , H04L27/2605 , H04L27/265 , H04L27/2665
摘要： Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.
摘要翻译：提供了一种用于在多频带正交频分复用超宽带（MB-OFDM UWB）系统中调整快速傅里叶变换（FFT）窗口定位的方法。该方法包括以下步骤：获取初始FFT窗口位置和跳频位置，通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号，将接收的数据信息发送到介质访问控制（ MAC）层，并且在MAC层判断基于帧检查序列（FCS）是否发生分组错误，并且如果没有发生分组错误，则返回到解调步骤，并且如果发生分组错误，则通过使用MAC-物理层（MAC-PHY）接口中的预定接口线来改变寄存器映射，从而调整FFT窗口位置和跳频位置，然后返回到解调步骤。

6. 发明授权

US07729238B2 Method for adjusting FFT window positioning in MB-OFDM UWB system 失效
标题翻译：在MB-OFDM UWB系统中调整FFT窗口定位的方法
公开(公告)号：US07729238B2
公开(公告)日：2010-06-01
申请号：US11635272
申请日：2006-12-07
申请人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
发明人： Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H04J11/00
CPC分类号： H04B1/7183 , H04L27/2605 , H04L27/265 , H04L27/2665
摘要： Provided is a method for adjusting Fast Fourier Transform (FFT) window positioning in a Multi Band Orthogonal Frequency Division Multiplexing Ultra-Wideband (MB-OFDM UWB) system. The method includes the steps of acquiring an initial FFT window position and a frequency hopping position, demodulating a received signal by using the initial FFT window position and the frequency hopping position acquired in the acquiring step, transmitting received data information to a Media Access Control (MAC) layer with a reception frame (RX frame) structure and judging at the MAC layer whether or not a packet error is occurred based on Frame Check Sequences (FCSs), and if no packet error is occurred, returning to the demodulating step, and if the packet error is occurred, changing a register map by using a predetermined interface line in a MAC-physical layer (MAC-PHY) interface to thereby adjust the FFT window position and the frequency hopping position, and then returning to the demodulating step.
摘要翻译：提供了一种用于在多频带正交频分复用超宽带（MB-OFDM UWB）系统中调整快速傅里叶变换（FFT）窗口定位的方法。该方法包括以下步骤：获取初始FFT窗口位置和跳频位置，通过使用在获取步骤中获取的初始FFT窗口位置和跳频位置解调接收信号，将接收的数据信息发送到介质访问控制（ MAC）层，并且在MAC层判断基于帧检查序列（FCS）是否发生分组错误，并且如果没有发生分组错误，则返回到解调步骤，并且如果发生分组错误，则通过使用MAC-物理层（MAC-PHY）接口中的预定接口线来改变寄存器映射，从而调整FFT窗口位置和跳频位置，然后返回到解调步骤。

7. 发明申请

US20070133670A1 Parallel equalizer for DS-CDMA UWB system and method thereof 失效
标题翻译： DS-CDMA UWB系统的并行均衡器及其方法
公开(公告)号：US20070133670A1
公开(公告)日：2007-06-14
申请号：US11635937
申请日：2006-12-08
申请人： Kyu-Min Kang , Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Sang-Sung Choi , Kwang-Rob Park
发明人： Kyu-Min Kang , Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Sang-Sung Choi , Kwang-Rob Park
IPC分类号： H03H7/30
CPC分类号： H04L25/03038 , H04L2025/03439
摘要： A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol decision mode’; a symbol decision block for obtaining a symbol error based on a output from the filter block and a training symbol in the ‘training mode’, and estimating a transmission symbol for each of the input signals in the ‘symbol decision mode’, obtaining an error of one among the estimated transmission symbols for a symbol error calculating input signal; and an weight update block for updating a filter tap coefficients of the filter block based on the training input signal or the symbol error calculating input signal and the symbol error and transmitting the updated filter tap coefficients into the filter block.
摘要翻译：提供了一种用于DS-CDMA UWB系统的并行均衡器及其方法。并行均衡器包括：滤波器块，用于以“训练模式”对训练输入信号进行滤波，并且以“符号判定模式”并行地对多个输入信号进行滤波; 用于基于来自滤波块的输出和“训练模式”中的训练符号获得符号误差的符号判定块，并且以“符号判定模式”为每个输入信号估计发送符号，获得误差估计的传输符号中的一个用于符号误差计算输入信号; 以及权重更新块，用于基于训练输入信号或符号误差计算输入信号和符号误差来更新滤波器块的滤波器抽头系数，并将更新的滤波器抽头系数发送到滤波器块。

8. 发明申请

US20070133662A1 Rake receiver for DS-CDMA UWB system and DS-CDMA receiver having the same 失效
标题翻译：用于DS-CDMA UWB系统的Rake接收机和具有相同功能的DS-CDMA接收机
公开(公告)号：US20070133662A1
公开(公告)日：2007-06-14
申请号：US11636049
申请日：2006-12-08
申请人： Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park , Sang-In Cho , Sung-Woo Choi , Chcol-Ho Shin
发明人： Kyu-Min Kang , Sang-Sung Choi , Kwang-Roh Park , Sang-In Cho , Sung-Woo Choi , Chcol-Ho Shin
IPC分类号： H04B1/00
CPC分类号： H04B1/709 , H04B1/707 , H04B1/7115 , H04B1/71637 , H04B1/7183
摘要： A rake receiver for DS-CDMA UWB system and a DS-CDMA receiver having the same are provided. The rake receiver includes: a channel estimator for estimating a channel having a predetermined chip duration by using a synchronization acquisition sequence; a tracking module for detecting a channel variation and adjusting a synchronization position value when the channel variation is detected; a first switch for selecting one of an output value of an analog-to-digital converter and an output value of a correlator and outputting the selected value; a second switch for selecting one of the output value of the analog-to-digital converter and the output value of the correlator; and a plurality of demodulators having a parallel processing structure to demodulate received signals by using the channel estimation value inputted from the channel estimator, the synchronization position value stored by the tracking module, and an output value of the second switch.
摘要翻译：提供了一种用于DS-CDMA UWB系统的瑞克接收机和具有该接收机的DS-CDMA接收机。耙式接收机包括：信道估计器，用于通过使用同步获取序列来估计具有预定码片持续时间的信道; 跟踪模块，用于在检测到信道变化时检测信道变化并调整同步位置值; 用于选择模数转换器的输出值之一和相关器的输出值并输出所选值的第一开关; 用于选择模数转换器的输出值之一和相关器的输出值的第二开关; 以及具有并行处理结构的多个解调器，通过使用从信道估计器输入的信道估计值，由跟踪模块存储的同步位置值和第二开关的输出值来解调接收信号。

9. 发明授权

US08009728B2 Parallel equalizer for DS-CDMA UWB system and method thereof 失效
标题翻译： DS-CDMA UWB系统的并行均衡器及其方法
公开(公告)号：US08009728B2
公开(公告)日：2011-08-30
申请号：US11635937
申请日：2006-12-08
申请人： Kyu-Min Kang , Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Sang-Sung Choi , Kwang-Roh Park
发明人： Kyu-Min Kang , Cheol-Ho Shin , Sung-Woo Choi , Sang-In Cho , Sang-Sung Choi , Kwang-Roh Park
IPC分类号： H03H7/30
CPC分类号： H04L25/03038 , H04L2025/03439
摘要： A parallel equalizer for a DS-CDMA UWB system and method thereof are provided. The parallel equalizer includes: a filter block for filtering a training input signal in a ‘training mode’, and filtering the plurality of input signals in parallel in a ‘symbol decision mode’; a symbol decision block for obtaining a symbol error based on a output from the filter block and a training symbol in the ‘training mode’, and estimating a transmission symbol for each of the input signals in the ‘symbol decision mode’, obtaining an error of one among the estimated transmission symbols for a symbol error calculating input signal; and an weight update block for updating a filter tap coefficients of the filter block based on the training input signal or the symbol error calculating input signal and the symbol error and transmitting the updated filter tap coefficients into the filter block.
摘要翻译：提供了一种用于DS-CDMA UWB系统的并行均衡器及其方法。并行均衡器包括：滤波器块，用于以“训练模式”对训练输入信号进行滤波，并且以“符号判定模式”并行地对多个输入信号进行滤波; 用于基于来自滤波块的输出和“训练模式”中的训练符号获得符号误差的符号判定块，并且以“符号判定模式”为每个输入信号估计发送符号，获得误差估计的传输符号中的一个用于符号误差计算输入信号; 以及权重更新块，用于基于训练输入信号或符号误差计算输入信号和符号错误来更新滤波器块的滤波器抽头系数，并将更新的滤波器抽头系数发送到滤波器块中。

10. 发明授权

US07924953B2 Apparatus and method for detecting time-frequency code in MB-OFDM UWB system 失效
标题翻译：在MB-OFDM UWB系统中检测时频码的装置和方法
公开(公告)号：US07924953B2
公开(公告)日：2011-04-12
申请号：US11948179
申请日：2007-11-30
申请人： Sung-Woo Choi , Cheol-Ho Shin , Kyu-Min Kang , Sang-Sung Choi
发明人： Sung-Woo Choi , Cheol-Ho Shin , Kyu-Min Kang , Sang-Sung Choi
IPC分类号： H04L27/06 , H04L7/00 , H04B1/69
CPC分类号： H04B1/713 , H04B1/709 , H04L5/0007 , H04L5/0037 , H04L27/2655 , H04L27/2675
摘要： Provided is an apparatus and method for detecting a time-frequency code in an MB-OFDM UWB system. The apparatus includes a controller for providing a band selection signal to the RF receiver and outputting a preamble selection signal at regular symbol periods to calculate a cross correlation value for a predetermined time period more than a beacon frame interval when a time-frequency code search start signal is received; and a cross correlator for storing information on preamble patterns, selecting a preamble stored depending on the preamble selection signal, and calculating a cross correlation value for a digital signal transferred through the RF receiver, wherein the controller determines a time-frequency code using a preamble where a peak occurs as a time-frequency code that is currently in use when a peak signal is inputted based on the calculated cross correlation value, and transmits the determined time-frequency code to the MAC receiver.
摘要翻译：提供了一种用于检测MB-OFDM UWB系统中的时间 - 频率代码的装置和方法。该装置包括控制器，用于向RF接收机提供频带选择信号，并以规则符号周期输出前导码选择信号，以便在时间频率代码搜索开始时比信标帧间隔多一个预定时间段内的互相关值信号被接收; 以及交叉相关器，用于存储关于前导码模式的信息，选择根据前导选择信号存储的前导码，以及计算通过RF接收机传送的数字信号的互相关值，其中控制器使用前导码确定时间频率码其中当基于所计算的互相关值输入峰值信号时作为当前正在使用的时间频率代码发生峰值，并将所确定的时间频率代码发送到MAC接收机。

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