公开(公告)号：US08630230B2

公开(公告)日：2014-01-14

申请号：US12962623

申请日：2010-12-07

申请人： Tai-Cheng Liu ,  Chi-Chen Lee ,  Ming-Chun Cheng ,  Chun-Jen Tsai ,  Chia-Ming Chang ,  Ching-Hwa Yu

发明人： Tai-Cheng Liu ,  Chi-Chen Lee ,  Ming-Chun Cheng ,  Chun-Jen Tsai ,  Chia-Ming Chang ,  Ching-Hwa Yu

IPC分类号： H04W4/00

CPC分类号： H04L1/0001 ,  H04L1/1829

摘要： A method of reducing interference between two communication systems operating in adjacent frequency bands and coexisting in a communication device is provided, and the two communication systems are a first communication system and a second communication system. The method includes deciding whether to perform an arbitration procedure on a downlink subframe of the first communication system according to a CINR of the first communication system and a RSSI of the second communication system; deciding whether to perform the arbitration procedure on an uplink subframe of the first communication system according to a transmit power of the first communication system and a RSSI value of the second communication system; and when deciding to perform the arbitration procedure on the downlink or uplink subframe, further deciding whether to send a specific packet to request one or more stations not to send packets to the second communication system.

摘要翻译： 提供了减少在相邻频带中工作并在通信设备中共存的两个通信系统之间的干扰的方法，并且两个通信系统是第一通信系统和第二通信系统。 该方法包括根据第一通信系统的CINR和第二通信系统的RSSI来决定是否对第一通信系统的下行链路子帧执行仲裁过程; 根据所述第一通信系统的发送功率和所述第二通信系统的RSSI值来决定是否对所述第一通信系统的上行链路子帧执行所述仲裁过程; 并且当决定在下行链路或上行链路子帧上执行仲裁过程时，进一步决定是否发送特定分组以请求一个或多个站不向第二通信系统发送分组。

公开(公告)号：US07961787B2

公开(公告)日：2011-06-14

申请号：US11302735

申请日：2005-12-13

申请人： Chun-Jen Tsai ,  Ching-Ho Chen

发明人： Chun-Jen Tsai ,  Ching-Ho Chen

IPC分类号： H04N7/12

CPC分类号： H04N19/115 ,  H04N5/147 ,  H04N17/004 ,  H04N19/14 ,  H04N19/142 ,  H04N19/159 ,  H04N19/172 ,  H04N19/61 ,  H04N19/85 ,  H04N19/87

摘要： Methods of video content complexity estimation, scene change detection and video encoding are provided. The video content complexity estimation and the scene change detecting are performed before a video encoding loop is processed. The method of video content complexity estimation includes calculating an absolute difference value diffi of the ith pixel between a current frame and a reference frame, a mean value mean(R) of pixel region R, a deviation value deviation(R) of pixel region R, a complexity value X of a target frame and an adjusted complexity Ĉtarget of the target frame by using equations mean ⁢ ⁢ ( R ) = 1 NM ⁢ ∑ i ∈ R ⁢ diff i , ⁢ deviation ⁢ ⁢ ( R ) = ∑ i ∈ R ⁢ abs ( diff i - mean ( R ) ) , ⁢ X = ∑ R ∈ frame ⁢ mean ⁢ ⁢ ( R ) · deviation ⁢ ⁢ ( R ) and Ĉtarget=a·X/b, respectively. Wherein, R represents N*M pixel region, a=b·SADtarget/X, b is power of 2 and SADtarget represents a true motion compensation sum of absolute difference for the target frame.

摘要翻译： 提供了视频内容复杂度估计，场景变化检测和视频编码的方法。 在处理视频编码循环之前执行视频内容复杂度估计和场景变化检测。 视频内容复杂度估计方法包括：计算当前帧和参考帧之间的第i个像素的绝对差值diff，像素区域R的平均值平均值（R），像素区域R的偏差值偏差（R） ，目标帧的复杂度值X和目标帧的调整后的复杂度目标通过使用等式mean mean（R）= 1NMΣi∈Rdiff i，偏差⁢（R）=Σi∈ R abs（diff i - mean（R）），X =ΣR∈frame mean mean（R）·偏差⁢（R）和Ĉtarget= a·X / b。 其中，R表示N * M像素区域，a = b·SADtarget / X，b是2的幂，SADtarget表示目标帧的绝对差的真运动补偿和。

公开(公告)号：US20060262849A1

公开(公告)日：2006-11-23

申请号：US11302735

申请日：2005-12-13

申请人： Chun-Jen Tsai ,  Ching-Ho Chen

发明人： Chun-Jen Tsai ,  Ching-Ho Chen

IPC分类号： H04N7/12 ,  H04N5/14 ,  H04N11/04 ,  H04N9/64

CPC分类号： H04N19/115 ,  H04N5/147 ,  H04N17/004 ,  H04N19/14 ,  H04N19/142 ,  H04N19/159 ,  H04N19/172 ,  H04N19/61 ,  H04N19/85 ,  H04N19/87

摘要： Methods of video content complexity estimation, scene change detection and video encoding are provided. The video content complexity estimation and the scene change detecting are performed before a video encoding loop is processed. The method of video content complexity estimation includes calculating an absolute difference value diffi of the ith pixel between a current frame and a reference frame, a mean value mean(R) of pixel region R, a deviation value deviation(R) of pixel region R, a complexity value X of a target frame and an adjusted complexity Ćtarget of the target frame by using equations mean ⁢   ⁢ ( R ) = 1 NM ⁢ ∑ i ∈ R ⁢ diff i , ⁢ deviation ⁢   ⁢ ( R ) = ∑ i ∈ R ⁢ abs ( diff i - mean ( R ) ) , ⁢ X = ∑ R ∈ frame ⁢ mean ⁢   ⁢ ( R ) · deviation ⁢   ⁢ ( R ) and Ćtarget=a·X/b, respectively. Wherein, R represents N*M pixel region, a=b·SADtarget/X, b is power of 2 and SADtarget represents a true motion compensation sum of absolute difference for the target frame.

公开(公告)号：US20110134746A1

公开(公告)日：2011-06-09

申请号：US12962623

申请日：2010-12-07

申请人： Tai-Cheng Liu ,  Chi-Chen Lee ,  Ming-Chun Cheng ,  Chun-Jen Tsai ,  Chia-Ming Chang ,  Ching-Hwa Yu

发明人： Tai-Cheng Liu ,  Chi-Chen Lee ,  Ming-Chun Cheng ,  Chun-Jen Tsai ,  Chia-Ming Chang ,  Ching-Hwa Yu

IPC分类号： H04J3/10

CPC分类号： H04L1/0001 ,  H04L1/1829

摘要： A method of reducing interference between two communication systems operating in adjacent frequency bands and coexisting in a communication device is provided, and the two communication systems are a first communication system using TDD and a second communication system which is content-based. The method includes deciding whether to perform an arbitration procedure on a downlink subframe of the first communication system according to a CINR of the first communication system and a RSSI of the second communication system; deciding whether to perform the arbitration procedure on an uplink subframe of the first communication system according to a transmit power of the first communication system and a RSSI value of the second communication system; and when deciding to perform the arbitration procedure on the downlink or uplink subframe, further deciding whether to send a specific packet to request one or more stations not to send packets to the second communication system.

摘要翻译： 提供了减少在相邻频带中工作并且在通信设备中共存的两个通信系统之间的干扰的方法，并且两个通信系统是使用TDD的第一通信系统和基于内容的第二通信系统。 该方法包括根据第一通信系统的CINR和第二通信系统的RSSI来决定是否对第一通信系统的下行链路子帧执行仲裁过程; 根据所述第一通信系统的发送功率和所述第二通信系统的RSSI值来决定是否对所述第一通信系统的上行链路子帧执行所述仲裁过程; 并且当决定在下行链路或上行链路子帧上执行仲裁过程时，进一步决定是否发送特定分组以请求一个或多个站不向第二通信系统发送分组。

公开(公告)号：US06529552B1

公开(公告)日：2003-03-04

申请号：US09504359

申请日：2000-02-15

申请人： Chun-Jen Tsai ,  Osama Alshaykh ,  Mark R. Banham

发明人： Chun-Jen Tsai ,  Osama Alshaykh ,  Mark R. Banham

IPC分类号： H04N718

CPC分类号： H04N19/587 ,  H04N19/103 ,  H04N19/124 ,  H04N19/132 ,  H04N19/146 ,  H04N19/154 ,  H04N19/162 ,  H04N19/164

摘要： A method and device for producing and delivering constant quality digital video bitstreams over channels of any bit-rate and variability are provided. The method and device may be applicable to any standardized video coding system, but preferably within the MPEG-4 standard. For constant capacity networks, the method and the device re-distribute the coded bits in a constant-quality variable bit-rate bitstream to construct a constant bit-rate bitstream. For variable capacity networks, the method and the device achieve constant quality as described by a metric that incorporate both spatial and temporal visual quality. The method and the device incorporate user, network, and channel parameters in controlling the bit-rate while encoding video material.

摘要翻译： 提供了一种用于在任何比特率和变异性的信道上产生和传送恒定质量数字视频比特流的方法和装置。 该方法和设备可以适用于任何标准化的视频编码系统，但优选地在MPEG-4标准内。 对于恒定容量网络，该方法和设备以恒定质量可变比特率比特流重新分配编码比特，以构建恒定比特率比特流。 对于可变容量网络，该方法和设备实现恒定质量，如同时包含空间和时间的视觉质量的度量描述的。 该方法和设备结合用户，网络和信道参数来控制比特率，同时编码视频素材。