公开(公告)号：US08379142B2

公开(公告)日：2013-02-19

申请号：US12648747

申请日：2009-12-29

申请人： Seong Dae Kim ,  Sung Soo Hwang ,  Su Jung Kim ,  Hwang Soo Lee ,  Young Serk Shim ,  Joon Sik Choi

发明人： Seong Dae Kim ,  Sung Soo Hwang ,  Su Jung Kim ,  Hwang Soo Lee ,  Young Serk Shim ,  Joon Sik Choi

IPC分类号： H04N5/222 ,  H04N9/73

CPC分类号： H04N5/2256 ,  H04N9/735

摘要： Disclosed herein is an apparatus and method for balancing the color of a flashed image using depth estimation. The apparatus includes a depth value measurement unit, a region identification unit, a color impression estimation unit, and a color balancing unit. The depth value measurement unit measures the depth values of the respective regions of an image to be captured using a camera preview image. The region identification unit identifies the regions of the preview image as a region influenced by camera flash or a region not influenced by camera flash using the depth values measured by the depth value measurement unit. The color impression estimation unit estimates the color impression of actual illumination in the region not influenced by camera flash. The color balancing unit corrects the color of the region influenced by camera flash.

摘要翻译： 本文公开了一种使用深度估计来平衡闪光图像的颜色的装置和方法。 该装置包括深度值测量单元，区域识别单元，颜色印象估计单元和颜色平衡单元。 深度值测量单元使用相机预览图像测量要拍摄的图像的各个区域的深度值。 区域识别单元使用由深度值测量单元测量的深度值，将预览图像的区域识别为受相机闪光或不受相机闪光影响的区域的区域。 颜色印象估计单元估计不受相机闪光影响的区域中的实际照明的颜色印象。 色彩平衡单元校正受相机闪光影响的区域的颜色。

公开(公告)号：US08089990B2

公开(公告)日：2012-01-03

申请号：US12233084

申请日：2008-09-18

申请人： Hwang-Soo Lee ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim ,  Byung-Jik Keum

发明人： Hwang-Soo Lee ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim ,  Byung-Jik Keum

IPC分类号： H04J3/06

CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2656 ,  H04L27/2675 ,  H04L27/2695

摘要： Disclosed are an apparatus and a method for preventing data read error for OFDM symbol demodulation. An average time synchronization offset estimating unit estimates average time synchronization offset between a pilot symbol of a time synchronized data frame and pilot symbols of data frames next to the time synchronized data frame. A data buffer control unit acquires a start location of a data frame to be read using the estimated average time synchronization offset, and controls reading of written data frames using the acquired start location information of the data frame to be read. In the apparatus and the method, a data buffering using a ring buffer construction may compensate time synchronization offset of samples containing real data in an OFDM symbol and prevent an erroneous read error in order to improve a receiving performance of a receiver.

摘要翻译： 公开了一种用于防止OFDM符号解调的数据读取错误的装置和方法。 平均时间同步偏移估计单元估计时间同步数据帧的导频符号与时间同步数据帧之后的数据帧的导频符号之间的平均时间同步偏移。 数据缓冲器控制单元使用估计的平均时间同步偏移来获取要读取的数据帧的开始位置，并且使用获取的要读取的数据帧的开始位置信息来控制写入的数据帧的读取。 在装置和方法中，使用环形缓冲器构造的数据缓冲可以补偿在OFDM符号中包含实际数据的样本的时间同步偏移，并且防止错误的读取错误，以便提高接收机的接收性能。

公开(公告)号：US20100118990A1

公开(公告)日：2010-05-13

申请号：US12338263

申请日：2008-12-18

申请人： Hwang-Soo Lee ,  Byung-Jik Keum ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim

发明人： Hwang-Soo Lee ,  Byung-Jik Keum ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim

IPC分类号： H04L27/28

CPC分类号： H04L27/2662 ,  H04L27/2656 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675

摘要： There are provided an apparatus for synchronizing an OFDM signal using an open-loop frequency synchronization method, which can estimate and compensate for various types of frequency errors generated in a frequency modulation broadcasting/communication system to which the open-loop frequency synchronization method is applied, and a frequency offset estimation scheme using the apparatus. To this end, the apparatus for synchronizing an OFDM signal using the open-loop frequency synchronization method comprises a time offset estimator, a time offset compensator, a fractional frequency offset estimator, an integer frequency offset estimator, a frequency offset controller and a frequency offset compensator. Accordingly, in the OFDM demodulation broadcasting/communication system using the open-loop frequency synchronization method, a frequency offset, which is generated due to the carrier frequency difference between a transmitter and a receiver, a frequency shift generated due to the mobile environment of a receiver, the temperature characteristic of a local oscillator, and the like, can be estimated and compensated.

摘要翻译： 提供了一种使用开环频率同步方法同步OFDM信号的装置，其可以估计和补偿在应用开环频率同步方法的频率调制广播/通信系统中产生的各种类型的频率误差 以及使用该装置的频率偏移估计方案。 为此，使用开环频率同步方法同步OFDM信号的装置包括时间偏移估计器，时间偏移补偿器，分数频率偏移估计器，整数频率偏移估计器，频率偏移控制器和频率偏移 补偿器 因此，在使用开环频率同步方式的OFDM解调广播/通信系统中，由于发送机与接收机之间的载波频率差异而产生的频率偏移是由于移动环境中产生的频移 接收机，本地振荡器的温度特性等可以被估计和补偿。

公开(公告)号：US08139684B2

公开(公告)日：2012-03-20

申请号：US12574464

申请日：2009-10-06

申请人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

发明人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

IPC分类号： H03D3/00 ,  H03K9/06

CPC分类号： H04L27/0002 ,  H04L27/0008 ,  H04L27/0012

摘要： Disclosed is a multi-channel signal receiver technology. An RF front-end in an RF receiver receiving at least two RF signals with different transmission bandwidths includes: at least two RF tuners receiving, amplifying, and frequency-converting the at least two RF signals, respectively; a switch selecting one of signals output from the at least two RF tuners; a channel filter eliminating interference signals included in a signal output from the switch, and passing a signal of a transmission band; an ADC converting the signal output from the channel filter into a digital signal; a fixed sampling frequency generator generating and transferring a fixed sampling frequency to the ADC.In the RF front-end, by processing filtering and sampling of signals with a narrow transmission bandwidth through a residual calculation capacity of a digital processor a construction of an RF front-end may be simplified and manufacturing costs may be reduced.

摘要翻译： 公开了一种多通道信号接收机技术。 RF接收器中的RF前端接收具有不同传输带宽的至少两个RF信号，包括：至少两个RF调谐器分别接收，放大和频率转换所述至少两个RF信号; 选择从所述至少两个RF调谐器输出的信号之一的开关; 滤波器，消除包含在从开关输出的信号中的干扰信号，并传递传输频带的信号; ADC将从信道滤波器输出的信号转换为数字信号; 固定的采样频率发生器产生并将固定采样频率传送到ADC。 在RF前端，通过对数字处理器的剩余计算能力对具有窄传输带宽的信号进行滤波和采样，可以简化RF前端的结构，并且可以降低制造成本。

公开(公告)号：US20100131678A1

公开(公告)日：2010-05-27

申请号：US12626857

申请日：2009-11-27

申请人： Hwang-Soo LEE ,  Jung-Keun Kim ,  Il-Song Han ,  Young Serk Shim

发明人： Hwang-Soo LEE ,  Jung-Keun Kim ,  Il-Song Han ,  Young Serk Shim

IPC分类号： G06F13/28

CPC分类号： G06F13/28

摘要： There is provided a direct memory access apparatus and a direct memory access method.The direct memory access apparatus of the present invention comprises: a variable transmission rule map unit for setting a transmission rule with a variable block length and a variable block interval as a unit of memory transmission rule; a direct memory access unit for sending data line of the variable block length and the variable block interval, in case of access to the unit of memory by using the unit of memory transmission rule determined by the variable transmission rule map unit; and an interface unit for retrieving the unit of memory transmission rule, which is necessary for sending the data line of the variable block length and the variable block interval, from the variable transmission rule map unit and sending the unit of memory transmission rule to the direct memory access unit.

摘要翻译： 提供了直接存储器访问装置和直接存储器访问方法。 本发明的直接存储器访问装置包括：可变传输规则映射单元，用于将具有可变块长度的传输规则和可变块间隔设置为存储器传输规则的单元; 在通过使用由可变传输规则映射单元确定的存储器发送规则的单元访问存储器单元的情况下，发送可变块长度和可变块间隔的数据线的直接存储器存取单元; 以及用于从可变传输规则映射单元检索用于发送可变块长度和可变块间隔的数据线所必需的存储器传输规则单元的接口单元，并将存储器传输规则单元发送到直接 存储器存取单元。

公开(公告)号：US20080165674A1

公开(公告)日：2008-07-10

申请号：US11755099

申请日：2007-05-30

申请人： Hwangsoo Lee ,  Young Serk Shim ,  Moohong Lee

发明人： Hwangsoo Lee ,  Young Serk Shim ,  Moohong Lee

IPC分类号： H04J11/00

CPC分类号： H04L27/2662 ,  H04L27/2675

摘要： Provided are an apparatus, a method, a receiver, and a computer readable recording medium for time synchronization offset compensation. The apparatus comprises an average time synchronization offset calculator, a reference clock frequency difference calculator, and a time synchronization offset compensator. The average time synchronization offset calculator calculates an average time synchronization offset between a phase reference symbol of a time-synchronization acquired frame and phase reference symbols of frames subsequent to the time-synchronization acquired frame. The reference clock frequency difference calculator calculates a reference clock frequency difference between a transmitter and a receiver. The time synchronization offset compensator compensates a time synchronization offset.

摘要翻译： 提供了一种用于时间同步偏移补偿的装置，方法，接收机和计算机可读记录介质。 该装置包括平均时间同步偏移计算器，参考时钟频率差计算器和时间同步偏移补偿器。 平均时间同步偏移计算器计算时间同步获取帧的相位参考符号与时间同步获取帧之后的帧的相位参考符号之间的平均时间同步偏移。 参考时钟频率差计算器计算发射机和接收机之间的参考时钟频率差。 时间同步偏移补偿器补偿时间同步偏移。

公开(公告)号：US20110069787A1

公开(公告)日：2011-03-24

申请号：US12574464

申请日：2009-10-06

申请人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

发明人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

IPC分类号： H04L27/22 ,  H04B1/18

CPC分类号： H04L27/0002 ,  H04L27/0008 ,  H04L27/0012

摘要： Disclosed is a multi-channel signal receiver technology. An RF front-end in an RF receiver receiving at least two RF signals with different transmission bandwidths includes: at least two RF tuners receiving, amplifying, and frequency-converting the at least two RF signals, respectively; a switch selecting one of signals output from the at least two RF tuners; a channel filter eliminating interference signals included in a signal output from the switch, and passing a signal of a transmission band; an ADC converting the signal output from the channel filter into a digital signal; a fixed sampling frequency generator generating and transferring a fixed sampling frequency to the ADC.In the RF front-end, by processing filtering and sampling of signals with a narrow transmission bandwidth through a residual calculation capacity of a digital processor a construction of an RF front-end may be simplified and manufacturing costs may be reduced.

摘要翻译： 公开了一种多通道信号接收机技术。 RF接收器中的RF前端接收具有不同传输带宽的至少两个RF信号，包括：至少两个RF调谐器分别接收，放大和频率转换所述至少两个RF信号; 选择从所述至少两个RF调谐器输出的信号之一的开关; 滤波器，消除包含在从开关输出的信号中的干扰信号，并传递传输频带的信号; ADC将从信道滤波器输出的信号转换为数字信号; 固定的采样频率发生器产生并将固定采样频率传送到ADC。 在RF前端，通过对数字处理器的剩余计算能力对具有窄传输带宽的信号进行滤波和采样，可以简化RF前端的结构，并且可以降低制造成本。

公开(公告)号：US20110026617A1

公开(公告)日：2011-02-03

申请号：US12574354

申请日：2009-10-06

申请人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

发明人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

IPC分类号： H04K1/10 ,  H04L27/06

CPC分类号： H04L27/2607 ,  H04L27/2657 ,  H04L27/2662

摘要： There is provided a method for effectively estimating transmission modes and lengths of guard intervals in the implementation of an integrated services digital broadcasting-T (ISDB-T) receiver. A method for estimating transmission modes and lengths of guard intervals in a broadcasting system having signals transmitted therein, the signals having a plurality of transmission modes, the transmission modes each having plural kinds of transmission symbols, the transmission symbols in each of the transmission modes having the same length of data intervals and different lengths of guard intervals, the transmission symbols in different transmission modes having different lengths of data intervals and different lengths of guard intervals, the guard interval in each of transmission symbols being obtained by copying a rear section of the data interval in each of the symbols and prefixing the copied rear section to a front section of the data interval, and one of the transmission symbols being periodically repeated, the method comprising: performing correlation while scanning the signals using a plurality of correlation windows respectively corresponding to the plurality of transmission modes; selecting the transmission mode corresponding to the correlation window having an outputted correlation result among the plurality of correlation windows as a transmission mode of a received signal; and estimating a existing time of the correlation result as the length of a guard interval in the received signal.

摘要翻译： 提供了一种在综合业务数字广播T（ISDB-T）接收机的实现中有效地估计保护间隔的传输模式和长度的方法。 一种用于估计其中发送信号的广播系统中的保护间隔的传输模式和长度的方法，具有多种传输模式的信号，每种传输模式具有多种传输符号，每种传输模式中的传输符号具有 相同长度的数据间隔和不同长度的保护间隔，不同传输模式下的传输符号具有不同长度的数据间隔和不同长度的保护间隔，每个传输符号中的保护间隔是通过复制 在每个符号中的数据间隔并且将复制的后部前缀到数据间隔的前部，并且周期性地重复发送符号中的一个，所述方法包括：在使用多个相关窗口分别对应地扫描信号时执行相关性 到多个传输 模式; 选择与所述多个相关窗口中具有输出的相关结果的相关窗口对应的传输模式作为接收信号的传输模式; 以及将相关结果的现有时间估计为接收信号中的保护间隔的长度。

公开(公告)号：US20090303867A1

公开(公告)日：2009-12-10

申请号：US12233084

申请日：2008-09-18

申请人： Hwang-Soo Lee ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim ,  Byung-Jik Keum

发明人： Hwang-Soo Lee ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim ,  Byung-Jik Keum

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2656 ,  H04L27/2675 ,  H04L27/2695

摘要： Disclosed are an apparatus and a method for preventing data read error for OFDM symbol demodulation. An average time synchronization offset estimating unit estimates average time synchronization offset between a pilot symbol of a time synchronized data frame and pilot symbols of data frames next to the time synchronized data frame. A data buffer control unit acquires a start location of a data frame to be read using the estimated average time synchronization offset, and controls reading of written data frames using the acquired start location information of the data frame to be read. In the apparatus and the method, a data buffering using a ring buffer construction may compensate time synchronization offset of samples containing real data in an OFDM symbol and prevent an erroneous read error in order to improve a receiving performance of a receiver.

摘要翻译： 公开了一种用于防止OFDM符号解调的数据读取错误的装置和方法。 平均时间同步偏移估计单元估计时间同步数据帧的导频符号与时间同步数据帧之后的数据帧的导频符号之间的平均时间同步偏移。 数据缓冲器控制单元使用估计的平均时间同步偏移来获取要读取的数据帧的开始位置，并且使用获取的要读取的数据帧的开始位置信息来控制写入的数据帧的读取。 在装置和方法中，使用环形缓冲器构造的数据缓冲可以补偿在OFDM符号中包含实际数据的样本的时间同步偏移，并且防止错误的读取错误，以便提高接收机的接收性能。

公开(公告)号：US08160185B2

公开(公告)日：2012-04-17

申请号：US12338263

申请日：2008-12-18

申请人： Hwang-Soo Lee ,  Byung-Jik Keum ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim

发明人： Hwang-Soo Lee ,  Byung-Jik Keum ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim

IPC分类号： H04L27/06

CPC分类号： H04L27/2662 ,  H04L27/2656 ,  H04L27/2659 ,  H04L27/266 ,  H04L27/2675

摘要： There are provided an apparatus for synchronizing an OFDM signal using an open-loop frequency synchronization method, which can estimate and compensate for various types of frequency errors generated in a frequency modulation broadcasting/communication system to which the open-loop frequency synchronization method is applied, and a frequency offset estimation scheme using the apparatus. To this end, the apparatus for synchronizing an OFDM signal using the open-loop frequency synchronization method comprises a time offset estimator, a time offset compensator, a fractional frequency offset estimator, an integer frequency offset estimator, a frequency offset controller and a frequency offset compensator. Accordingly, in the OFDM demodulation broadcasting/communication system using the open-loop frequency synchronization method, a frequency offset, which is generated due to the carrier frequency difference between a transmitter and a receiver, a frequency shift generated due to the mobile environment of a receiver, the temperature characteristic of a local oscillator, and the like, can be estimated and compensated.

摘要翻译： 提供了一种使用开环频率同步方法同步OFDM信号的装置，其可以估计和补偿在应用开环频率同步方法的频率调制广播/通信系统中产生的各种类型的频率误差 以及使用该装置的频率偏移估计方案。 为此，使用开环频率同步方法同步OFDM信号的装置包括时间偏移估计器，时间偏移补偿器，分数频率偏移估计器，整数频率偏移估计器，频率偏移控制器和频率偏移 补偿器 因此，在使用开环频率同步方式的OFDM解调广播/通信系统中，由于发送机与接收机之间的载波频率差异而产生的频率偏移是由于移动环境中产生的频移 接收机，本地振荡器的温度特性等可以被估计和补偿。