公开(公告)号：US08594205B2

公开(公告)日：2013-11-26

申请号：US11869443

申请日：2007-10-09

申请人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

发明人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

IPC分类号： H04B14/06

CPC分类号： H03M7/40 ,  H04N19/39 ,  H04N19/61

摘要： A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.

摘要翻译： 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量，每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量，并对每个量化的随机变量进行熵编码，分别创建编码比特流。 编码的比特流由解码器接收，该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码，反相量化和反转换。 逆变换根据哪个通道工作，即第一，第二或两个通道是否工作，执行三种不同的变换。

公开(公告)号：US07289565B1

公开(公告)日：2007-10-30

申请号：US10994511

申请日：2004-11-22

申请人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

发明人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

IPC分类号： H04B14/06

CPC分类号： H04N19/39

摘要： A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.

摘要翻译： 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量，每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量，并对每个量化的随机变量进行熵编码，分别创建编码比特流。 编码的比特流由解码器接收，该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码，反相量化和反转换。 逆变换根据哪个通道工作，即第一，第二或两个通道是否工作，执行三种不同的变换。

公开(公告)号：US06823018B1

公开(公告)日：2004-11-23

申请号：US09511367

申请日：2000-02-23

申请人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

发明人： Hamid Jafarkhani ,  Michael T. Orchard ,  Amy R. Reibman ,  Yao Wang

IPC分类号： H04B1406

CPC分类号： H04N19/39

摘要： A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable in the other pair. The method further includes quantizing each of the pairs of random variables and entropy coding each quantized random variable separately creating an encoded bitstreams. The encoded bitstreams are received by a decoder which first determines which channels of the communication system are working. The encoded bitstream is entropy decoded, inversed quantized and inversed transformed. An inverse transform performs three different transformations depending upon which channels are working, i.e., whether the first, second or both channels are working.

摘要翻译： 一种方法和装置通过通信系统可靠地编码和解码信息。 该方法包括将两个系数变换成两对随机变量，每对中的一个随机变量具有基本相等的能量作为另一对中的一个随机变量。 该方法还包括量化每对随机变量，并对每个量化的随机变量进行熵编码，分别创建编码比特流。 编码的比特流由解码器接收，该解码器首先确定通信系统的哪些信道正在工作。 编码比特流被熵解码，反相量化和反转换。 逆变换根据哪个通道工作，即第一，第二或两个通道是否工作，执行三种不同的变换。

公开(公告)号：US20130142451A1

公开(公告)日：2013-06-06

申请号：US13309207

申请日：2011-12-01

申请人： Amy R. Reibman ,  Francis M. Ciaramello

发明人： Amy R. Reibman ,  Francis M. Ciaramello

IPC分类号： G06K9/54

CPC分类号： G06T7/0002 ,  G06T2207/30168 ,  H04N19/154

摘要： A system that incorporates teachings of the present disclosure may include, for example, distorting a seed image to generate first and second images where the distortions cause the first and second images to have a potential false tie according to a target quality estimator and generating a third image from the first and second images where the third image is generated based on a proxy quality estimator so that the third image has a potential false ordering according to the target quality estimator. Other embodiments are disclosed.

摘要翻译： 结合本公开的教导的系统可以包括例如扭曲种子图像以产生第一和第二图像，其中失真导致第一和第二图像根据目标质量估计器具有潜在的假关联，并且产生第三 基于代理质量估计器从第一和第二图像生成第三图像的图像，使得第三图像根据目标质量估计器具有潜在的错误排序。 公开了其他实施例。

公开(公告)号：US5543853A

公开(公告)日：1996-08-06

申请号：US386992

申请日：1995-01-19

申请人： Barin G. Haskell ,  Amy R. Reibman

发明人： Barin G. Haskell ,  Amy R. Reibman

IPC分类号： H04J3/06 ,  H04J3/16 ,  H04N7/24 ,  H04N7/52 ,  H04N19/00 ,  H04N21/234 ,  H04N21/2343 ,  H04N21/24 ,  H04N21/242 ,  H04N21/43 ,  H04N21/44 ,  H04N21/6373 ,  H04N21/643 ,  H04N7/12

CPC分类号： H04N21/234354 ,  H04J3/0626 ,  H04J3/0632 ,  H04J3/1688 ,  H04N21/23406 ,  H04N21/2402 ,  H04N21/242 ,  H04N21/4305 ,  H04N21/44004 ,  H04N21/6373 ,  H04N21/64307

摘要： Encoder/decoder buffer overflow and underflow encountered when employing actually variable or effectively variable bit-rate channels for communicating encoded video images and corresponding audio signals are overcome by adjusting the parameters of a video encoder in response to a representation of cell delay variation, i.e., jitter, determined at a remote decoder.

公开(公告)号：US08693797B2

公开(公告)日：2014-04-08

申请号：US13309207

申请日：2011-12-01

申请人： Amy R. Reibman ,  Francis M. Ciaramello

发明人： Amy R. Reibman ,  Francis M. Ciaramello

IPC分类号： G06K9/40 ,  G06K9/36

CPC分类号： G06T7/0002 ,  G06T2207/30168 ,  H04N19/154

摘要： A system that incorporates teachings of the present disclosure may include, for example, distorting a seed image to generate first and second images where the distortions cause the first and second images to have a potential false tie according to a target quality estimator and generating a third image from the first and second images where the third image is generated based on a proxy quality estimator so that the third image has a potential false ordering according to the target quality estimator. Other embodiments are disclosed.

摘要翻译： 结合本公开的教导的系统可以包括例如扭曲种子图像以产生第一和第二图像，其中失真导致第一和第二图像根据目标质量估计器具有潜在的假关联，并且产生第三 基于代理质量估计器从第一和第二图像生成第三图像的图像，使得第三图像根据目标质量估计器具有潜在的错误排序。 公开了其他实施例。

公开(公告)号：US5565924A

公开(公告)日：1996-10-15

申请号：US588493

申请日：1996-01-18

申请人： Barin G. Haskell ,  Amy R. Reibman

发明人： Barin G. Haskell ,  Amy R. Reibman

IPC分类号： H04J3/06 ,  H04J3/16 ,  H04N7/24 ,  H04N7/52 ,  H04N19/00 ,  H04N21/234 ,  H04N21/2343 ,  H04N21/24 ,  H04N21/242 ,  H04N21/43 ,  H04N21/44 ,  H04N21/6373 ,  H04N21/643

CPC分类号： H04N21/234354 ,  H04J3/0626 ,  H04J3/0632 ,  H04J3/1688 ,  H04N21/23406 ,  H04N21/2402 ,  H04N21/242 ,  H04N21/4305 ,  H04N21/44004 ,  H04N21/6373 ,  H04N21/64307

摘要： Encoder/decoder buffer overflow and underflow encountered when employing actually variable or effectively variable bit-rate channels for communicating encoded video images and corresponding audio signals are overcome by adjusting the parameters of a video encoder in response to a representation of cell delay variation, i.e., jitter, determined at a remote decoder.

摘要翻译： 当采用用于通信编码视频图像和相应音频信号的实际可变或有效可变比特率信道时遇到的编码器/解码器缓冲器溢出和下溢通过响应于信元延迟变化的表示来调整视频编码器的参数来克服， 抖动，在远程解码器确定。

公开(公告)号：US5001561A

公开(公告)日：1991-03-19

申请号：US517991

申请日：1990-05-02

申请人： Barin G. Haskell ,  Amy R. Reibman

发明人： Barin G. Haskell ,  Amy R. Reibman

IPC分类号： H04N5/92 ,  H04N7/26 ,  H04N7/30 ,  H04N7/50

CPC分类号： H04N19/60 ,  H04N19/30 ,  H04N19/619

摘要： A video processing system is disclosed that separates and separately encodes and decodes the low and high spatial frequency coefficients of images for transmission or storage. Each block of an image is transformed into the frequency domain. High frequency coefficients of the resulting transform matrix are separated from the low frequency coefficients. The low frequency coefficients are motion prediction compensated to derive motion vectors and a prediction error signal. The motion vectors, prediction error signal and high frequency coefficients are channel encoded for storage or transmission. In a receiver, the motion vectors and prediction error signal are used to reconstruct a low frequency motion-compensated version of the image. The high frequency coefficients are inverse transformed into the pel domain and are combined with the reconstructed low frequency verison of the image to reconstruct a version of the original image.

公开(公告)号：US5515377A

公开(公告)日：1996-05-07

申请号：US113788

申请日：1993-09-02

申请人： Caspar Horne ,  Amy R. Reibman

发明人： Caspar Horne ,  Amy R. Reibman

IPC分类号： H04L12/801 ,  H04L12/911 ,  H04N1/41 ,  H04N1/413 ,  H04N7/60 ,  H04N19/50 ,  H04N19/89 ,  H04N21/236 ,  H04N21/434 ,  H04Q11/04 ,  H04J3/16

CPC分类号： H04N21/236 ,  H04N19/107 ,  H04N19/152 ,  H04N19/176 ,  H04N19/187 ,  H04N19/61 ,  H04N19/89 ,  H04N21/434 ,  H04Q11/0478 ,  H04L2012/5616 ,  H04N19/146 ,  H04N19/30

摘要： The quality of video images received at the remote end of an ATM network capable of transmitting data at high and low priorities is greatly improved at high cell loss levels by employing a two-layered video encoding technique that adapts the method for encoding information transmitted in the low-priority bit-stream to the rate of cell loss on the network so that compression efficiency and image quality are high when the network load is low and resiliency to cell loss is high when the network load is high. The encoder adapts its encoding method in response to a cell loss information signal generated by the remote decoder by selecting the prediction mode used to encode the low-priority bit-stream, and by changing the frequency at which slice-start synchronization codes are placed within the low-priority bit-stream.

摘要翻译： 通过采用双层视频编码技术，在高信元丢失水平的情况下，在能够以高优先级和低优先级发送数据的ATM网络的远端接收的视频图像的质量大大提高，该双层视频编码技术适用于在 低优先级比特流到网络上的信元丢失率，使得当网络负载低时，压缩效率和图像质量很高，并且当网络负载高时，信元丢失的弹性高。 编码器通过选择用于对低优先级比特流进行编码的预测模式，并通过改变在其中放置切片开始同步码的频率，来适应其编码方法以响应由远程解码器产生的信元丢失信息信号 低优先级位流。

公开(公告)号：US5287182A

公开(公告)日：1994-02-15

申请号：US907943

申请日：1992-07-02

申请人： Barin G. Haskell ,  Amy R. Reibman

发明人： Barin G. Haskell ,  Amy R. Reibman

IPC分类号： H04L7/033 ,  H04L12/70 ,  H04L12/885 ,  H04L12/951 ,  H04N21/43 ,  H04N21/44 ,  H04N21/643 ,  H04Q11/04 ,  H04N5/04 ,  H04N7/04

CPC分类号： H04N21/4305 ,  H04N21/4307 ,  H04N21/44004 ,  H04N21/64307 ,  H04Q11/0478 ,  H04L2012/5616 ,  H04L2012/5646

摘要： Complications of timing recovery in an ATM receiver are overcome by employing a first phase lock loop including a phase comparator, filter, voltage controlled oscillator (VCO) and output counter to lock to systems clock reference (SCR) values which are asynchronously received from a remote ATM transmitter. The SCR values represent the instantaneous values of a system timing clock (STC) at the instant of transmission of the asynchronous SCR values. In the receiver, the output counter is first set to the value of the initial received SCR value so that the derived STC is available for decoding data cells in the initial received packets. Then, so-called Presentation/Decode Time Stamps (PTS/DTS) included in the audio and video data are advantageously employed in conjunction with STC to display properly the received data. Invention, underflow of the receiver data buffers is alleviated by the addition of a "jitter-delay (D.sub.j)" value which causes an extra accumulation of data in the data buffers prior to decoding. Dynamic tracking of the jitter-delay of the channel is obtained by monitoring the fullness of the data buffers and controllably adjusting the jitter-delay, accordingly. The stability of the decoder video timing is enhanced by employing an additional phase locked loop in a video display control which is supplied with a timing error signal. The additional phase locked loop includes a switch, filter, clipper and voltage controlled oscillator (VCO). The switch is enabled in response to output pulses from the VCO to supply the instantaneous error signal input to the filter for each so-called video presentation unit. The VCO has a very stable center frequency which variation is limited by clipping an input control voltage to some small voltage range. Output pulses from the VCO are employed to enable decoding of the presentation units. Faster synchronization is provided at start-up by increasing, via control of the clipper, the allowable voltage range of the VCO.