公开(公告)号：US4589018A

公开(公告)日：1986-05-13

申请号：US500957

申请日：1983-06-03

申请人： Barin G. Haskell ,  Robert L. Schmidt

发明人： Barin G. Haskell ,  Robert L. Schmidt

IPC分类号： H04N11/00 ,  H04J4/00 ,  H04N7/00 ,  H04N7/08 ,  H04N7/081 ,  H04N7/32 ,  H04N7/36 ,  H04N11/06 ,  H04N11/24 ,  H04N19/50 ,  H04N21/236 ,  H04N21/2365 ,  H04N21/434

CPC分类号： H04N21/4347 ,  H04N11/06 ,  H04N19/503 ,  H04N21/236 ,  H04N21/2365 ,  H04N21/434 ,  H04N7/081

摘要： The present invention relates to a technique for the Time-Frequency-Multiplexing (TFM) of three television signals. More particularly, three fields of a TV signal are sent simultaneously to a remote receiver by transmitting one field as is in the baseband of a standard television system signal while the other two fields are transmitted as differential signals, quadrature amplitude modulated onto a subcarrier frequency above baseband. The two differential signals can comprise two field differential signals or a frame and a field differential signal. Arrangements are also provided for transmitters and receivers for implementing the present technique.

摘要翻译： 本发明涉及三个电视信号的时频复用（TFM）技术。 更具体地，电视信号的三个场同时发送到远程接收机，通过在标准电视系统信号的基带中发送一个场，而另外两个场作为差分信号发送，正交幅度调制到上面的子载波频率上 基带。 两个差分信号可以包括两个场差分信号或帧和场差分信号。 还提供了用于实施本技术的发射机和接收机的安排。

公开(公告)号：US4633311A

公开(公告)日：1986-12-30

申请号：US467312

申请日：1983-02-17

申请人： Pat L. Gordon ,  Barin G. Haskell ,  Robert L. Schmidt

发明人： Pat L. Gordon ,  Barin G. Haskell ,  Robert L. Schmidt

IPC分类号： H04N7/08 ,  H04N7/12

CPC分类号： H04N7/0806

摘要： The bandwidth required for a regularly occurring signal such as a television signal, as received from a signal source can be substantially reduced by not transmitting each and every one of the horizontal scan lines. Rather, firstly, one or more selected lines may be transmitted and, secondly, instead of transmitting the remaining, unselected lines, a signal representing a predetermined arithmetic difference among predetermined ones of the scan lines may be transmitted.

摘要翻译： 通过不传输水平扫描线中的每一个，可以显着地减少从信号源接收的诸如电视信号的规律发生的信号所需的带宽。 相反，首先，可以发送一个或多个所选行，其次，可以发送表示预定扫描线之间的预定算术差异的信号而不是发送剩余的未选择行。

公开(公告)号：US4593318A

公开(公告)日：1986-06-03

申请号：US500954

申请日：1983-06-03

申请人： Kai Y. Eng ,  Barin G. Haskell ,  Robert L. Schmidt

发明人： Kai Y. Eng ,  Barin G. Haskell ,  Robert L. Schmidt

IPC分类号： H04N11/00 ,  H04N7/00 ,  H04N7/045 ,  H04N7/08 ,  H04N7/081 ,  H04N7/32 ,  H04N11/06 ,  H04N11/24 ,  H04N19/50 ,  H04N21/2365 ,  H04N21/434 ,  H04N7/04

CPC分类号： H04N21/4347 ,  H04N11/06 ,  H04N21/2365 ,  H04N7/045 ,  H04N7/0806

摘要： The present invention relates to a Time Compression Multiplexing (TCM) technique for transmitting three consecutive television picture signals from a television picture source during the time period normally used to send one television picture signal. More particularly, three consecutive lines or fields from a TV signal source are compressed into an ordinary line or field period, respectively, by sending one line or field as is, but time compressed, in one portion of a line or field period and sending two other lines or fields as differential signals, also time compressed, to occupy two separate and different portions of the same line or field period as is used by the first one line or field. With such technique it is possible to send three consecutive line or field signals from each of three separate colocated or non-colocated TV sources on a Time Division Multiple Access (TDMA) basis.

摘要翻译： 本发明涉及一种用于在通常用于发送一个电视图像信号的时间段期间从电视图像源发送三个连续电视图像信号的时间压缩复用（TCM）技术。 更具体地，来自TV信号源的三个连续的行或场分别通过在行或场周期的一部分中按原样发送一行或场而被压缩成普通的行或场周期，并发送两个 作为差分信号的其它行或场也被时间压缩以占据与第一行或场所使用的相同行或场周期的两个单独和不同部分。 利用这种技术，可以在时分多址（TDMA）基础上从三个单独的共同定位或非共同定位的电视源中的每一个发送三个连续的线或场信号。

公开(公告)号：US5778100A

公开(公告)日：1998-07-07

申请号：US613963

申请日：1996-03-08

申请人： Homer H. Chen ,  Barin G. Haskell ,  Joern Ostermann

发明人： Homer H. Chen ,  Barin G. Haskell ,  Joern Ostermann

IPC分类号： G06T9/00 ,  H04N7/26 ,  H04N7/50 ,  G06K9/36 ,  H04N5/14 ,  H04N7/12

CPC分类号： H04N19/61 ,  H04N19/20

摘要： A method and apparatus for reducing the output bit rate in a video object planes sequence encoder. An approximation of the shape of an object on a current frame is generated and used, along with a predicted image of the object from a subsequent frame and an estimate of the displacement of the object, to predict an image of the object in a current frame. A stripe is formed around the predicted image and the picture elements contained in the stripe are assigned texture values. The predicted image and stripe are subtracted from the current frame to form an error signal which is masked by the approximate shape of the object and provided to an entropy coder for transmission at an output bit rate.

摘要翻译： 一种用于降低视频对象平面序列编码器中的输出比特率的方法和装置。 生成并使用当前帧上的对象的形状的近似以及来自后续帧的对象的预测图像和对象的位移的估计，以预测当前帧中的对象的图像 。 在预测图像周围形成条纹，并且包含在条带中的图像元素被分配纹理值。 从当前帧中减去预测图像和条带，以形成由对象的近似形状掩蔽的误差信号，并将其提供给用于以输出比特率传输的熵编码器。

公开(公告)号：US5623312A

公开(公告)日：1997-04-22

申请号：US361929

申请日：1994-12-22

申请人： Li Yan ,  Barin G. Haskell

发明人： Li Yan ,  Barin G. Haskell

IPC分类号： G06T9/00 ,  H04N5/14 ,  H04N7/15 ,  H04N7/52 ,  H04N19/50 ,  H04N21/2343 ,  H04N21/2368 ,  H04N21/2662 ,  H04N21/434 ,  H04N21/61 ,  H04N7/18

CPC分类号： H04N7/15 ,  H04N19/40 ,  H04N19/42 ,  H04N19/51 ,  H04N19/61 ,  H04N21/234354 ,  H04N21/2368 ,  H04N21/2662 ,  H04N5/145 ,  H04N21/6137

摘要： Improved bit rate reduction techniques are disclosed. When incorporated into an existing video processing system having a DCT coefficients processor, the motion vector processor disclosed herein provides enhanced computational and memory storage efficiencies over prior art designs. The motion vector processor includes a microprocessor and associated motion vector memory. The motion vector memory is adapted to store a plurality of motion vectors corresponding to at least one image frame containing a plurality of macro blocks. Each motion vector is represented by an X value and a Y value, the X value and the Y value signifying image changes within a given macro block from a given frame to the immediately preceding frame.

摘要翻译： 公开了改进的比特率降低技术。 当结合到具有DCT系数处理器的现有视频处理系统中时，本文公开的运动矢量处理器提供了超过现有技术设计的增强的计算和存储器存储效率。 运动矢量处理器包括微处理器和相关的运动矢量存储器。 运动矢量存储器适于存储对应于包含多个宏块的至少一个图像帧的多个运动矢量。 每个运动矢量由X值和Y值表示，X值和Y值表示图像在给定的宏块内从给定的帧到前一帧改变。

公开(公告)号：US5604502A

公开(公告)日：1997-02-18

申请号：US215334

申请日：1994-03-21

申请人： Barin G. Haskell ,  Li Yan

发明人： Barin G. Haskell ,  Li Yan

IPC分类号： G06F17/14 ,  G06T9/00 ,  H03M7/30 ,  H04N1/41 ,  H04N7/26 ,  H04N7/30 ,  H04N7/50 ,  H03M1/00

CPC分类号： H04N19/45 ,  H04N19/122 ,  H04N19/126 ,  H04N19/60 ,  H04N19/61

摘要： A novel method and apparatus is disclosed for controlling inverse discrete cosine transform ("IDCT") mismatch between an encoder and decoder using different IDCT implementations under all coding conditions. Sychronization between the encoder and decoder is forced by selectively setting certain small DCT coefficients, which are prone to mismatch, to zero at the encoder. Advantageously, the invention may be implemented solely in the encoder to minimize system complexity and cost, and allow for IDCT mismatch control utilizing conventional decoders.

摘要翻译： 公开了一种新颖的方法和装置，用于在所有编码条件下使用不同的IDCT实现来控制编码器和解码器之间的反离散余弦变换（“IDCT”）失配。 通过在编码器处选择性地将某些容易产生不匹配的小DCT系数设置为零来强制编码器和解码器之间的同步。 有利地，本发明可以仅在编码器中实现以最小化系统复杂性和成本，并且允许利用常规解码器进行IDCT失配控制。

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：US4302838A

公开(公告)日：1981-11-24

申请号：US126401

申请日：1980-03-03

申请人： Kai Y. Eng ,  Barin G. Haskell

发明人： Kai Y. Eng ,  Barin G. Haskell

IPC分类号： H04J3/18 ,  H04J3/06

CPC分类号： H04J3/18

摘要： Bandwidth is a precious resource in a communication system. High frequency signals, for example, video signals, typically require a relatively large bandwidth. One means for reducing bandwidth is by way of time compression multiplexing wherein signals may be stored a short period of time, compressed in time and then transmitted over a communication path. The subject signal processor may time compress and time synchronize an input signal with a time multiplexed signal. In a first arrangement, responsive to a time delay difference between the signals (215), a first frequency signal (220) is used to modulate (230) the input signal (210). The modulated signal is extended through a dispersive filter (260) for introducing a delay to the input signal, the delay for synchronizing same with the time multiplexed signal. The synchronized output of the dispersive filter may be extracted by an envelope detector (270) for extension to an output terminal (280). In a second arrangement, the input signal may be modulated by a variable chirp signal (220). The modulated (230) input signal is then extended through a dispersive filter (260) and an envelope detector (270) for jointly time compressing and time synchronizing the input signal with the time multiplexed signal.

摘要翻译： 带宽是通信系统中的宝贵资源。 高频信号，例如视频信号通常需要较大的带宽。 用于减小带宽的一种手段是通过时间压缩复用的方式，其中信号可以在短时间段内被存储，在时间上被压缩，然后在通信路径上传输。 主体信号处理器可以时间压缩和时间同步输入信号与时间复用信号。 在第一布置中，响应信号（215）之间的时间延迟差，使用第一频率信号（220）来调制（230）输入信号（210）。 调制信号通过色散滤波器（260）延伸，用于向输入信号引入延迟，延迟与时间复用信号同步。 分散滤波器的同步输出可以由包络检测器（270）提取，用于扩展到输出端子（280）。 在第二布置中，输入信号可以由可变线性​​调频信号（220）调制。 调制（230）输入信号然后通过色散滤波器（260）和包络检测器（270）进行扩展，用于对输入信号与时间复用信号进行联合时间压缩和时间同步。

公开(公告)号：US07827458B1

公开(公告)日：2010-11-02

申请号：US10379012

申请日：2003-03-03

申请人： Ryan R. Salsbury ,  James Oliver Normile ,  Hyeonkuk Jeong ,  Joe S. Abuan ,  Barin G. Haskell

发明人： Ryan R. Salsbury ,  James Oliver Normile ,  Hyeonkuk Jeong ,  Joe S. Abuan ,  Barin G. Haskell

IPC分类号： H04L1/18

CPC分类号： H04L1/1838

摘要： A method, apparatus, system, and signal-bearing medium that in an embodiment detect that a first packet is not received, add a place holder for the first packet in a buffer, request retransmission of the first packet, and create an estimated packet based on a combination of a second packet previous to the first packet, a third packet following the first packet, and a fourth packet from a previous frame that is spatially corresponding to the first packet. In another embodiment, a method, apparatus, system, and signal-bearing medium are provided that send a encoded packet to a receiver, save the encoded packet in a bitstream, determine whether the encoded packet is lost, and when the encoded packet is lost, decode the bitstream with the lost packet omitted and insert a reconstructed frame associated with the lost packet into a reference frame storage. In another embodiment, when the encoded packet is lost, a decoder is run on a reference frame chosen as the last uncorrupted frame. In another embodiment, when the encoded packet is lost, the decoder is run on a frame chosen from a set of previously stored reference frames.

摘要翻译： 一种方法，装置，系统和信号承载介质，其在一个实施例中检测到未接收到第一分组，在缓冲器中添加第一分组的占位符，请求重新发送第一分组，并创建基于估计的分组 在第一分组之前的第二分组的组合，第一分组之后的第三分组以及在空间上对应于第一分组的来自前一帧的第四分组。 在另一个实施例中，提供了一种方法，装置，系统和信号承载介质，其将经编码的分组发送到接收机，将经编码的分组存储在比特流中，确定编码分组是否丢失，以及编码分组丢失时 ，丢失丢失的分组解码比特流，并将与丢失分组相关联的重构帧插入到参考帧存储器中。 在另一个实施例中，当编码分组丢失时，解码器在被选择为最后未被破坏的帧的参考帧上运行。 在另一个实施例中，当编码分组丢失时，解码器在从一组先前存储的参考帧中选择的帧上运行。

公开(公告)号：US5608458A

公开(公告)日：1997-03-04

申请号：US322893

申请日：1994-10-13

申请人： Homer H. Chen ,  Touradj Ebrahimi ,  Barin G. Haskell ,  Caspar Horne

发明人： Homer H. Chen ,  Touradj Ebrahimi ,  Barin G. Haskell ,  Caspar Horne

IPC分类号： G06T9/00 ,  H03M7/36 ,  H04N7/26 ,  H04N7/30 ,  H04N7/32 ,  H04N7/36 ,  H04N7/50

CPC分类号： H04N19/649 ,  H04N19/107 ,  H04N19/51 ,  H04N19/537 ,  H04N19/543 ,  H04N19/61 ,  H04N19/20

摘要： An encoder segments frames in a sequence of digital images into multiple regions of arbitrary shape each of which has a corresponding motion vector relative to a previous decoded frame. A hierarchical multi-resolution motion estimation and segmentation technique, which segments the frame into multiple blocks and which assigns a best motion vector to each block is used. Blocks having the same or similar motion vector are then merged to form the arbitrarily-shaped regions. The shape of each region is coded, and a decision is made to code additional image data of each region in one of three modes. In a first inter-frame mode, a motion vector associated with a region is encoded. In a second inter-frame mode, a prediction error for the region is also encoded. In an intra-frame mode, the intensity of each picture element in the region is encoded. A region interior coder with frequency domain region-zeroing and space domain region-enforcing operations is employed for effectively coding the interior image data of the arbitrarily-shaped regions. The region interior coder uses an iterative technique based on the theory of successive projection onto convex sets (POCS) to find the best values for a group of selected transform coefficients. The coded information, including the shape of the region, the choice of the mode, and the motion vector and/or the region's interior image data, may then be transmitted to a decoder where the image can be reconstructed.

摘要翻译： 编码器将数字图像序列中的帧划分为任意形状的多个区域，每个区域具有相对于先前解码的帧的相应运动向量。 使用分层多分辨率运动估计和分割技术，其将帧分割成多个块并且向每个块分配最佳运动矢量。 然后将具有相同或相似运动矢量的块合并以形成任意形状的区域。 编码每个区域的形状，并且决定以三种模式之一对每个区域的附加图像数据进行编码。 在第一帧间模式中，对与区域相关联的运动矢量进行编码。 在第二帧间模式中，还对该区域的预测误差进行编码。 在帧内模式中，对该区域中的每个像素的强度进行编码。 采用具有频域区域归零和空域域执行操作的区域内部编码器来有效地编码任意形状区域的内部图像数据。 区域内部编码器使用基于连续投影到凸集（POCS）的理论的迭代技术来找到一组选定的变换系数的最佳值。 然后可以将包括区域的形状，模式的选择以及运动矢量和/或区域的内部图像数据的编码信息发送到可以重建图像的解码器。