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1. 发明授权

US08040980B2 Log likelihood ratio calculation method, transmit signal detection method, and receiver 有权
标题翻译：对数似然比计算方法，发射信号检测方法和接收机
公开(公告)号：US08040980B2
公开(公告)日：2011-10-18
申请号：US12142600
申请日：2008-06-19
申请人： Seung Jae Bahng , Chang Wahn Yu , Young Jo Bang , Dae Ho Kim , Young Ha Lee , Youn-Ok Park
发明人： Seung Jae Bahng , Chang Wahn Yu , Young Jo Bang , Dae Ho Kim , Young Ha Lee , Youn-Ok Park
IPC分类号： H04L27/06 , H03K9/00 , H04L27/00
CPC分类号： H04L25/03318 , H04L25/0204 , H04L25/0246 , H04L25/067
摘要： The present invention relates to a log-likelihood ratio calculation method, a transmitting signal detection method, and a receiver. The present invention estimates a channel on the basis of the received signal and rearranges a plurality of layers. Further, at the time of rearrangement of the layers, a symbol of a layer having the lowest reliability is considered for every constellation dot, and the successive interference for the remaining layers is removed corresponding to the constellation dots of the layer having the lowest reliability to set the transmitting symbol candidate vector. Furthermore, a log-likelihood ratio for every bit of the plurality of layers is calculated using the transmitting symbol candidate vector to decode the channel.
摘要翻译：本发明涉及对数似然比计算方法，发送信号检测方法和接收机。本发明基于接收到的信号来估计信道并重排多个层。此外，在层的重排时，对于每个星座点考虑具有最低可靠性的层的符号，并且对应于具有最低可靠性的层的星座点去除对剩余层的连续干扰，设置发送符号候选向量。此外，使用发送符号候选向量计算多个层中的每一比特的对数似然比，以解码该信道。

2. 发明授权

US08559566B2 Method and apparatus for decomposing received symbol signal modulated with bit reflected gray code in bit information 有权
标题翻译：用于在位信息中分解用位反射灰度码调制的接收符号信号的方法和装置
公开(公告)号：US08559566B2
公开(公告)日：2013-10-15
申请号：US12734984
申请日：2008-09-01
申请人： Chang Wahn Yu , Dong Weon Yoon , Kwang Min Hyun , Youn Ok Park , Dae Ho Kim , Jun-Woo Kim , Hyeong Sook Park , Seung Jae Bahng , Young Jo Bang , Kyung Yeol Sohn
发明人： Chang Wahn Yu , Dong Weon Yoon , Kwang Min Hyun , Youn Ok Park , Dae Ho Kim , Jun-Woo Kim , Hyeong Sook Park , Seung Jae Bahng , Young Jo Bang , Kyung Yeol Sohn
IPC分类号： H04L27/06
CPC分类号： H04L25/067 , H04L1/005
摘要： Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.
摘要翻译：公开了一种用于将被反映格雷码的位进行调制的接收符号信号组合成比特信息的方法和装置。根据本发明的实施例，根据Gray映射规则分配具有位的接收符号信号的正整数，并且确定符号。计算表示构成接收符号信号的位的排列的值。获取由构成接收到的符号信号的比特组构成的至少一个比特组中的边界值，并且计算与接收到的符号信号的绝对值的差值。基于正整数和确定的符号，指示比特排列的值以及与绝对值的差，使用接收到的符号信号的值将接收的符号信号转换为每位的信息。因此，可以降低在接收机中不可避免地使用的迭代解码器的逐位分解的复杂度。

3. 发明授权

US08135099B2 Method for detecting transmission symbols in multiple antenna system 有权
标题翻译：用于检测多天线系统中发射符号的方法
公开(公告)号：US08135099B2
公开(公告)日：2012-03-13
申请号：US12127342
申请日：2008-05-27
申请人： Young Jo Bang , Chang Wahn Yu , Seung Jae Bahng , Dae Ho Kim , Youn Ok Park , Jee Hwan Ahn , Il Min Kim
发明人： Young Jo Bang , Chang Wahn Yu , Seung Jae Bahng , Dae Ho Kim , Youn Ok Park , Jee Hwan Ahn , Il Min Kim
IPC分类号： H04B1/10
CPC分类号： H04B7/0413 , H04B7/0854
摘要： The present invention relates to a transmission symbol detection method in a multiple antenna system. In the present invention, when a channel matrix is estimated through channel estimation, a receiving side calculates a Q matrix and an R matrix through QR decomposition that is more simplified than a typical QR decomposition from an augmented channel matrix that includes the estimated channel matrix. In addition, the receiving side detects symbols having the minimum Euclidean metric by using the two matrixes, as transmission symbols.
摘要翻译：本发明涉及多天线系统中的发射符号检测方法。在本发明中，当通过信道估计来估计信道矩阵时，接收侧通过QR分解来计算Q矩阵和R矩阵，其比来自包括估计信道矩阵的增强信道矩阵的典型QR分解更简化。此外，接收端通过使用两个矩阵来检测具有最小欧几里德量度的符号作为发送符号。

4. 发明申请

US20110103521A1 METHOD AND APPARATUS FOR DECOMPOSING RECEIVED SYMBOL SIGNAL MODULATED WITH BIT REFLECTED GRAY CODE IN BIT INFORMATION 有权
标题翻译：用于分解接收到的符号信号的方法和装置
公开(公告)号：US20110103521A1
公开(公告)日：2011-05-05
申请号：US12734984
申请日：2008-09-01
申请人： Chang Wahn YU , Dong Weon Yoon , Kwang Min Hyun , Youn Ok Park , Dae Ho Kim , Jun-Woo Kim , Hyeong Sook Park , Seung Jae Bahng , Young Jo Bang , Kyung Yeol Sohn
发明人： Chang Wahn YU , Dong Weon Yoon , Kwang Min Hyun , Youn Ok Park , Dae Ho Kim , Jun-Woo Kim , Hyeong Sook Park , Seung Jae Bahng , Young Jo Bang , Kyung Yeol Sohn
IPC分类号： H04L27/06
CPC分类号： H04L25/067 , H04L1/005
摘要： Disclosed is a method and apparatus for composing a received symbol signal modulated with a bit reflected Gray code into bit information. According to an embodiment of the present invention, a positive integer of the received symbol signal having bits is assigned according to the Gray mapping rule, and a sign is determined. A value that is indicative of an arrangement of the bits constituting the received symbol signal is calculated. A boundary value in at least one bit group consisting of the bits constituting the received symbol signal is acquired, and a difference from an absolute value of the received symbol signal is calculated. The received symbol signal is converted into information per bit using a value of the received symbol signal based on the positive integer and the determined sign, the value that is indicative of the bit arrangement, and the difference from the absolute value. Therefore, it is possible to reduce complexity in bitwise decomposition for an iterative decoder inevitably used in a receiver.
摘要翻译：公开了一种用于将被反映格雷码的位进行调制的接收符号信号组合成比特信息的方法和装置。根据本发明的实施例，根据Gray映射规则分配具有位的接收符号信号的正整数，并且确定符号。计算表示构成接收符号信号的位的排列的值。获取由构成接收到的符号信号的比特组构成的至少一个比特组中的边界值，并且计算与接收到的符号信号的绝对值的差值。基于正整数和确定的符号，指示比特排列的值以及与绝对值的差，使用接收到的符号信号的值将接收的符号信号转换为每位的信息。因此，可以降低在接收机中不可避免地使用的迭代解码器的逐位分解的复杂度。

5. 发明申请

US20090135964A1 METHOD OF CALCULATING LOG-LIKELIHOOD RATIO AND METHOD OF DETECTING TRANSMISSION SIGNAL 有权
标题翻译：计算日志比例的方法和检测传输信号的方法
公开(公告)号：US20090135964A1
公开(公告)日：2009-05-28
申请号：US12141382
申请日：2008-06-18
申请人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
发明人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
IPC分类号： H03D1/00
CPC分类号： H04L1/0054
摘要： The present invention relates to a method of calculating a log-likelihood ratio and a method of detecting a transmission signal. According to the present invention, when a transmission symbol candidate vector is detected on the basis of a received signal, a threshold value and an ML metric of each transmission symbol candidate vector are calculated and the ML metric that is larger than the threshold value is updated by the threshold value. Further, a log-likelihood ratio of the transmission signal bit is calculated using the updated ML metric and the threshold value, and a transmission signal is detected using the log-likelihood ratio.
摘要翻译：本发明涉及计算对数似然比的方法和检测发送信号的方法。根据本发明，当基于接收信号检测到发送符号候选向量时，计算每个发送符号候选向量的阈值和ML度量，并且更新大于阈值的ML度量通过阈值。此外，使用更新的ML度量和阈值来计算发送信号比特的对数似然比，并且使用对数似然比来检测发送信号。

6. 发明授权

US08036322B2 Method of calculating log-likelihood ratio and method of detecting transmission signal 有权
标题翻译：计算对数似然比的方法和检测传输信号的方法
公开(公告)号：US08036322B2
公开(公告)日：2011-10-11
申请号：US12141382
申请日：2008-06-18
申请人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn-Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
发明人： Seung Jae Bahng , Jae Kwon Kim , Hoon Heo , Hyun Myung Wu , Youn-Ok Park , Dae Ho Kim , Kyung Yeol Sohn , Chang Wahn Yu , Jun-Woo Kim , Eon Young Hong
IPC分类号： H04L27/06
CPC分类号： H04L1/0054
摘要： The present invention relates to a method of calculating a log-likelihood ratio and a method of detecting a transmission signal. According to the present invention, when a transmission symbol candidate vector is detected on the basis of a received signal, a threshold value and an ML metric of each transmission symbol candidate vector are calculated and the ML metric that is larger than the threshold value is updated by the threshold value. Further, a log-likelihood ratio of the transmission signal bit is calculated using the updated ML metric and the threshold value, and a transmission signal is detected using the log-likelihood ratio.
摘要翻译：本发明涉及计算对数似然比的方法和检测发送信号的方法。根据本发明，当基于接收信号检测到发送符号候选向量时，计算每个发送符号候选向量的阈值和ML度量，并且更新大于阈值的ML度量通过阈值。此外，使用更新的ML度量和阈值来计算发送信号比特的对数似然比，并且使用对数似然比来检测发送信号。

7. 发明授权

US08811543B2 Receiving apparatus in OFDM system and receiving method 有权
标题翻译： OFDM系统接收装置及接收方法
公开(公告)号：US08811543B2
公开(公告)日：2014-08-19
申请号：US13588361
申请日：2012-08-17
申请人： Young Ha Lee , Hye Kyung Jwa , Dae Ho Kim
发明人： Young Ha Lee , Hye Kyung Jwa , Dae Ho Kim
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L27/2647 , H04L25/022 , H04L25/0222 , H04L25/0232
摘要： Disclosed are a receiving apparatus and a receiving method. More particularly, disclosed are a receiving apparatus and a receiving method in an OFDM system. The receiving apparatus in the OFDM system includes a receiver for receiving wireless signals transmitted through wireless channels, a transformer for transforming the wireless signals into signals of a frequency domain, an inverse transformer for inversely transforming reference signals into signals of a time domain based on a number of reference signals included in the signals of the frequency domain and an arrangement interval of the reference signals included in the signals of the frequency domain, and a determiner for determining a delay spread based on the inversely transformed signals of the time domain.
摘要翻译：公开了一种接收装置和接收方法。更具体地，公开了OFDM系统中的接收装置和接收方法。 OFDM系统中的接收装置包括用于接收通过无线信道发送的无线信号的接收机，用于将无线信号变换为频域的信号的变压器，用于将参考信号逆变换为时域信号的逆变换器，其基于包括在频域的信号中的参考信号的数量和包括在频域的信号中的参考信号的布置间隔，以及用于基于时域的逆变换信号确定延迟扩展的确定器。

8. 发明授权

US08698422B2 Average current controller 有权
标题翻译：平均电流控制器
公开(公告)号：US08698422B2
公开(公告)日：2014-04-15
申请号：US13206195
申请日：2011-08-09
申请人： Jong Tae Hwang , Seong Joon Park , Dae Ho Kim , Moon Sang Jung
发明人： Jong Tae Hwang , Seong Joon Park , Dae Ho Kim , Moon Sang Jung
IPC分类号： G05F1/00 , H05B37/02 , H05B39/04 , H05B41/36
CPC分类号： H05B33/0818 , Y02B20/347
摘要： An average current controller configured for connection to display-components through a power switch. The average current controller includes first, second, and third comparators, an integrator, and a reference current generator. The first comparator compares a peak current level of reference current with a load current level of load current and outputs a first comparison result. The load current denotes current flowing through the display-components. The second comparator compares the peak current level of reference current with an average current level of the load current and outputs a second comparison result. The integrator integrates the second comparison result. The third comparator compares the integral value of the integrator with a predetermined value and outputs a third comparison result. The reference current generator sets the peak current level based on the first comparison result and the third comparison result and generates the reference current with the set peak current level.
摘要翻译：一个平均电流控制器，配置为通过电源开关连接到显示器组件。平均电流控制器包括第一，第二和第三比较器，积分器和参考电流发生器。第一个比较器将参考电流的峰值电流电平与负载电流的负载电流水平进行比较，并输出第一个比较结果。负载电流表示流过显示器组件的电流。第二个比较器将参考电流的峰值电流电平与负载电流的平均电流电平进行比较，并输出第二个比较结果。积分器集成了第二个比较结果。第三比较器将积分器的积分值与预定值进行比较，并输出第三比较结果。参考电流发生器基于第一比较结果和第三比较结果设置峰值电流电平，并以设定的峰值电流电平生成参考电流。

9. 发明授权

US08634725B2 Method and apparatus for transmitting data using visible light communication 失效
标题翻译：使用可见光通信发送数据的方法和装置
公开(公告)号：US08634725B2
公开(公告)日：2014-01-21
申请号：US13269197
申请日：2011-10-07
申请人： Il-Soon Jang , Dae Ho Kim , Sang-Kyu Lim , You Jin Kim , Tae-Gyu Kang
发明人： Il-Soon Jang , Dae Ho Kim , Sang-Kyu Lim , You Jin Kim , Tae-Gyu Kang
IPC分类号： H04B10/00 , H04B10/04 , H04B10/12
CPC分类号： H04B10/116
摘要： A transmitting apparatus using visible light communication generates a light source control signal from color information representing additional information and transmits additional information with a color of light that is emitted by a light source by controlling an on/off time of a plurality of LEDs according to the light source control signal. Therefore, a user can intuitively know additional information from a color of light that is emitted by the light source.
摘要翻译：使用可见光通信的发送装置从表示附加信息的颜色信息生成光源控制信号，并通过控制多个LED的开/关时间根据光源发出由光源发出的光的颜色的附加信息光源控制信号。因此，用户可以直观地从光源发出的光的颜色中知道附加信息。

10. 发明授权

US08270881B2 Image forming apparatus and control method thereof 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US08270881B2
公开(公告)日：2012-09-18
申请号：US12691030
申请日：2010-01-21
申请人： Dae Ho Kim
发明人： Dae Ho Kim
IPC分类号： G03G15/08
CPC分类号： G03G15/0893 , G03G15/0877 , G03G2215/0822 , G03G2215/0838
摘要： An image forming apparatus and a control method thereof provides that when circulation of developer in a housing of a developing unit is deteriorated due to concentration of the developer, thus applying increased load to an agitator, the agitator is appropriately rotated forwardly and backwardly under the control of a controller. This may prevent overloading of the agitator and release the concentrated developer.
摘要翻译：图像形成装置及其控制方法提供：当显影单元的壳体中的显影剂的循环由于显影剂的浓度而变差，从而对搅拌器施加增加的负载时，搅拌器在控制下适当地向前和向后旋转的控制器。这可以防止搅拌器的过载并释放浓缩的显影剂。

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