公开(公告)号：US06437776B1

公开(公告)日：2002-08-20

申请号：US08885189

申请日：1997-06-30

申请人： Barton A. Walz

发明人： Barton A. Walz

IPC分类号： H04N712

CPC分类号： H04N7/147

摘要： A second environment that operates with the standard operating single computer system and then co-exists with the environment 1 already in place and operating in the computer system. Upon execution of a computer language code this second environment opens in a seamless integration of its program to its new tasks that you select. One example allows video teleconferencing to be activated while the other environment remains available for all usual computer tasks. Thus two separate operations can be simultaneous with all the typical tasks available within each of the separate environments. Multiple separate environments can be encompassed, and more than one video monitor can be utilized to ease the visual separation of such multiple applications, and all such applications are based on a single computer system with usual configuration and software.

摘要翻译： 第二个环境使用标准操作的单一计算机系统运行，然后与已经存在并在计算机系统中运行的环境1共存。 执行计算机语言代码后，第二个环境可以将程序与您选择的新任务无缝集成。 一个示例允许视频电话会议被激活，而其他环境保持可用于所有通常的计算机任务。 因此，两个单独的操作可以与每个单独环境中可用的所有典型任务同时进行。 可以包含多个独立的环境，并且可以使用多于一个的视频监视器来简化这些多个应用的​​视觉分离，并且所有这些应用都基于具有常规配置和软件的单个计算机系统。

公开(公告)号：US06434195B1

公开(公告)日：2002-08-13

申请号：US09196709

申请日：1998-11-20

申请人： Ajay Luthra ,  Keith J. Kelley ,  Limin Wang

发明人： Ajay Luthra ,  Keith J. Kelley ,  Limin Wang

IPC分类号： H04N712

CPC分类号： H04N21/812 ,  H04N19/00 ,  H04N19/107 ,  H04N19/157 ,  H04N19/172 ,  H04N19/174 ,  H04N19/40 ,  H04N19/48 ,  H04N19/61 ,  H04N21/23424 ,  H04N21/2343 ,  H04N21/26233 ,  H04N21/44016 ,  H04N21/8455

摘要： A method is provided for replacing compressed video from a first source with video from a second source at a predefined insertion point in a video data stream. If the video from the second source is progressively refreshed video, it is decompressed sufficiently prior to the insertion point to enable the recovery and recompression of a first video frame (in encoding order) from the second source to be inserted at the insertion point. The recovered first video frame is then recompressed as an intra-coded (I) frame. The insertion of the video from the second source is then commenced at the insertion point using the I frame. The insertion point can, for example, indicate the commencement of a commercial break in the video stream, in which case the second source provides a commercial for insertion into the commercial break. Where the commercial is stored in memory, it can be stored with the first frame thereof (in encoding order) as an I frame.

摘要翻译： 提供了一种用于在视频数据流中的预定插入点处从来自第二源的视频替换来自第一源的压缩视频的方法。 如果来自第二源的视频是逐渐刷新的视频，则在插入点之前对其进行充分的解压缩，以便能够从插入点插入第二个源的第一个视频帧（以编码顺序）的恢复和重新压缩。 然后将恢复的第一视频帧作为帧内编码（I）帧重新压缩。 然后使用I帧在插入点处开始从第二源插入视频。 例如，插入点可以指示视频流中的商业中断的开始，在这种情况下，第二个源提供商业插入到商业中断。 在商业存储在存储器中的情况下，可以将其第一帧（以编码顺序）存储为I帧。

公开(公告)号：US06421468B1

公开(公告)日：2002-07-16

申请号：US09226370

申请日：1999-01-06

申请人： Viresh Ratnakar ,  Vasudev Bhaskaran

发明人： Viresh Ratnakar ,  Vasudev Bhaskaran

IPC分类号： H04N712

CPC分类号： G06T3/4084 ,  G06T5/003 ,  G06T5/10 ,  G06T2207/20192 ,  H04N1/4092 ,  H04N5/208

摘要： An original image is sharpened by obtaining a first frequency-domain representation of the original image, selecting one or more elements from this first representation based on one more criteria such as element magnitude and frequency, scaling the selected elements according to one or more scale factors, and forming a second frequency-domain representation by combining the scaled selected elements with the unselected elements of the first representation. A sharpened reproduction of the original image may be generated by applying an inverse transform to the second frequency-domain representation. A technique for deriving the value of the one or more scale factors is also discussed.

摘要翻译： 通过获得原始图像的第一频域表示来锐化原始图像，基于诸如元素幅度和频率的多个标准从该第一表示中选择一个或多个元素，根据一个或多个比例因子对所选择的元素进行缩放 ，以及通过将缩放的所选择的元素与第一表示的未选择元素组合来形成第二频域表示。 可以通过对第二频域表示应用逆变换来生成原始图像的锐化再现。 还讨论了用于导出一个或多个比例因子的值的技术。

公开(公告)号：US06414992B1

公开(公告)日：2002-07-02

申请号：US09238878

申请日：1999-01-27

申请人： Parthasarathy Sriram ,  Subramania Sudharsanan

发明人： Parthasarathy Sriram ,  Subramania Sudharsanan

IPC分类号： H04N712

CPC分类号： H04N19/567 ,  H04N19/103 ,  H04N19/107 ,  H04N19/136 ,  H04N19/137 ,  H04N19/147 ,  H04N19/176 ,  H04N19/19 ,  H04N19/51 ,  H04N19/56 ,  H04N19/61

摘要： The present invention involves a system and method for optimizing video encoding. For each candidate motion vector, encoding distortion is determined between a macroblock and a reconstructed macroblock by determining discrete cosine transform coefficients of the macroblock and quantizing the discrete cosine transform coefficients. An estimate unit estimates the length of the bit stream that would be required to encode the quantized discrete cosine transform coefficients along with the mode information bits including mode and motion vector information. The reconstructed macroblock is determined based on the quantized discrete cosine transform coefficients. A bit-rate term based on the length of the bit-rate stream is determined and included in the encoding distortion. The candidate motion vector which minimizes the encoding distortion of the macroblock is chosen to be the motion vector for the macroblock.

摘要翻译： 本发明涉及一种用于优化视频编码的系统和方法。 对于每个候选运动矢量，通过确定宏块的离散余弦变换系数并量化离散余弦变换系数，在宏块和重构宏块之间确定编码失真。 估计单元估计将量化的离散余弦变换系数与包括模式和运动矢量信息的模式信息位一起编码所需的比特流的长度。 基于量化的离散余弦变换系数确定重建的宏块。 基于比特流的长度的比特率项被确定并包括在编码失真中。 将宏块的编码失真最小化的候选运动矢量选择为宏块的运动矢量。

公开(公告)号：US06411395B1

公开(公告)日：2002-06-25

申请号：US09183494

申请日：1998-10-30

申请人： Peter Carl Bahrs ,  Krishna Kondaka

发明人： Peter Carl Bahrs ,  Krishna Kondaka

IPC分类号： H04N712

CPC分类号： H03M7/46

摘要： Apparatus and method for performing hierarchial type mask encoding and data transformation includes locating a data source, loading the data source into a temporary storage, encoding heuristics for buffer transformation, and delivery of data for transformation and scalar type encoding, reduction, compression, iteration, type extension and versioning if required.

摘要翻译： 用于执行层次型掩模编码和数据变换的装置和方法包括定位数据源，将数据源加载到临时存储器中，用于缓冲器变换的编码启发式和用于转换和标量类型编码，缩减，压缩，迭代的数据的传递， 如果需要，请输入扩展名和版本。

公开(公告)号：US06404816B1

公开(公告)日：2002-06-11

申请号：US09940533

申请日：2001-08-29

申请人： Won Jun Her

发明人： Won Jun Her

IPC分类号： H04N712

CPC分类号： G06T3/4084 ,  G06T3/60 ,  H04N19/126 ,  H04N19/61

摘要： Device and method for transposing a matrix of video signals, is disclosed, the device including a memory part, a write control circuit for shifting and writing rows of the matrix of video signals on the memory part by any one unit either of a row unit or column unit, and a read control circuit for shifting and reading the matrix of video signals stored in the memory part by one unit different from the unit in the writing either of the row unit or the column unit, with rows of a matrix of video signal received at the next time written on a portion of the memory part emptied due to the shift in the reading.

摘要翻译： 公开了用于转置视频信号矩阵的装置和方法，该装置包括存储器部分，写入控制电路，用于通过行单元或任何一个单元在存储器部分上移动和写入视频信号矩阵的行 列单元，以及读取控制电路，用于将存储在存储器部分中的视频信号的矩阵移位和读取与行单元或列单元中的任何一个单元不同的单元，并且读取控制电路与视频信号矩阵的行 由于阅读的转移，在下一次接收到的一部分内存部分被清空。

公开(公告)号：US06400762B2

公开(公告)日：2002-06-04

申请号：US09353924

申请日：1999-07-15

申请人： Masahiro Takeshima

发明人： Masahiro Takeshima

IPC分类号： H04N712

CPC分类号： H04N5/21 ,  H04N5/144 ,  H04N9/78

摘要： A first motion detection circuit detects presence/absence of motion in an image on the basis of a composite video signal and an output signal of a frame memory. A three-dimensional Y/C separation circuit separates a luminance signal and a chrominance signal from the composite video signal by an inter-frame operation or an intra-frame operation on the basis of a motion signal output from the first motion detection circuit. A motion detection circuit detects presence/absence of motion in the image on the basis of the luminance signal output from the three-dimensional Y/C separation circuit. A synthesizing circuit synthesizes motion signals output from the first motion detection circuit and a second motion detection circuit. A three-dimensional noise reduction circuit reduces noise of the luminance signal output from the three-dimensional Y/C separation circuit by an inter-frame operation or an intra-frame operation on the basis of an output signal of the synthesizing circuit.

摘要翻译： 第一运动检测电路基于复合视频信号和帧存储器的输出信号来检测图像中的运动的存在/不存在。 三维Y / C分离电路基于从第一运动检测电路输出的运动信号，通过帧间操作或帧内操作，从复合视频信号中分离出亮度信号和色度信号。 基于从三维Y / C分离电路输出的亮度信号，运动检测电路检测图像中的运动的有无。 合成电路合成从第一运动检测电路输出的运动信号和第二运动检测电路。 三维噪声降低电路基于合成电路的输出信号，通过帧间操作或帧内操作来降低从三维Y / C分离电路输出的亮度信号的噪声。

公开(公告)号：US06385248B1

公开(公告)日：2002-05-07

申请号：US09105224

申请日：1998-06-26

申请人： Larry Pearlstein ,  Sharif M. Sazzad

发明人： Larry Pearlstein ,  Sharif M. Sazzad

IPC分类号： H04N712

CPC分类号： H04N19/423 ,  H04N19/45 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70

摘要： Methods and apparatus for implementing video decoders at a reduced cost are described. The methods include data reduction techniques, simplified inverse quantization techniques, and dynamically varying the complexity of image enhancement operations, e.g., prediction filtering operations, as a function of whether luminance or chrominance data is being processed. In order to reduce data storage requirements, luminance and chrominance data corresponding to previously encoded images may be stored at different resolutions with, in some embodiments, chrominance data being stored at less than half the resolution of luminance data. In various embodiments, data representing portions of B frames which will not be displayed is identified and discarded, e.g., without performing a decoding operation thereon. Portions of I and P frames which will not be displayed are identified and decoded at a reduced resolution and/or using simplified inverse quantization techniques. The decoded I and P frame data is stored for use when making subsequent predictions if required. Another data reduction technique involves applying different amounts of data reduction, e.g., downsampling, to different image portions with no or little downsampling being performed on image portions located at or nearest to the image's center of interest as determined from information included in a received encoded bitstream.

摘要翻译： 描述了以降低的成本实现视频解码器的方法和装置。 该方法包括数据简化技术，简化逆量化技术，以及动态地改变图像增强操作的复杂性，例如预测滤波操作，作为是否正在处理亮度或色度数据的函数。 为了减少数据存储要求，与以前编码的图像相对应的亮度和色度数据可以以不同的分辨率存储，在一些实施例中，色度数据被存储在亮度数据的分辨率的一半以下。 在各种实施例中，表示不显示的B帧的部分的数据被识别和丢弃，例如不对其执行解码操作。 以降低的分辨率和/或使用简化的逆量化技术来识别和解码不显示的I帧和P帧的部分。 如果需要，进行后续预测时，解码的I和P帧数据被存储以供使用。 另一种数据缩减技术涉及对不同的图像部分应用不同数量的数据缩减，例如下采样，在从包含在接收的编码比特流中的信息确定的位于或最靠近图像的感兴趣中心的图像部分上执行没有或很少的下采样 。

公开(公告)号：US06385242B1

公开(公告)日：2002-05-07

申请号：US09689070

申请日：2000-10-12

申请人： Xuemin Chen

发明人： Xuemin Chen

IPC分类号： H04N712

CPC分类号： H04N19/20 ,  H04N19/124 ,  H04N19/126 ,  H04N19/61

摘要： Inverse quantization (36, 44, 60) of a two-dimensional array of video coefficients QF[v][u] is provided. A first weighting matrix {overscore (W)}[0][v][u]=2*W[0][v][u] for intra-coded macroblocks and a second weighting matrix {overscore (W)}[1][v][u]=2*W[1][v][u] for non-intra-coded macroblocks are pre-computed and stored (88). A quantization difference (quanti+1)to be used in selecting a weight factor is computed (70) based on a current macroblock quantization level. The weight factor is output from one of the weighting matrices in response to the quantization difference and a macroblock type identifier (66) (i.e., intra-coded or non-intra-coded). Subsequent weights Wi+1[w][v][u] are then computed (86) from a current weight Wi[w][v][u] and the weight factor. The array of coefficients QF[v][u] is multiplied (92) by the weights Wi+1[w][v][u] to reconstruct unquantized coefficients.

摘要翻译： 提供了视频系数QF [v] [u]的二维阵列的反量化（36,44,60）。 用于帧内编码宏块的第一加权矩阵{overscore（W）} [0] [v] [u] = 2 * W [0] [v] [u]和第二加权矩阵{overscore（W）} [1 ] [v] [u] = 2 * W [1] [v] [u]用于非帧内编码宏块被预先计算并存储（88）。 基于当前的宏块量化级，计算（70）选择权重因子时使用的量化差（quanti + 1）。 响应于量化差异，从权重矩阵之一输出权重因子和宏块类型标识符（66）（即，帧内编码或非帧内编码）。 然后从当前权重Wi [w] [v] [u]和权重因子计算后续权重Wi + 1 [w] [v] [u]（86）。 将系数QF [v] [u]的数组乘以（92）乘以权重Wi + 1 [w] [v] [u]以重构无量纲的系数。

公开(公告)号：US06381280B1

公开(公告)日：2002-04-30

申请号：US09087449

申请日：1998-05-29

申请人： William C. Lynch ,  Krasimir D. Kolarov ,  D. Robert Hoover ,  William J. Arrighi

发明人： William C. Lynch ,  Krasimir D. Kolarov ,  D. Robert Hoover ,  William J. Arrighi

IPC分类号： H04N712

CPC分类号： H04N19/186 ,  H04N19/647

摘要： A motion wavelet transform zero tree codec achieves high compression and is implemented in hardware of modest size and at very low cost. A wavelet transform is combined with a tree walk technique for encoding the resulting wavelet coefficients. A 2-6 wavelet transform is used. Wavelet coefficients from the transform are represented in a pyramid of wavelet coefficients. An array of zero trees are formed from the pyramid to hold the wavelet coefficients, one coefficient to each node. Significance values for each node are calculated to assist with the tree walk and encoding. Each zero tree is traversed to produce an output of encoded bits. Encoded bits are output directly during the tree walk.

摘要翻译： 运动小波变换零树编解码器实现了高压缩，并以适中的大小和非常低的成本在硬件中实现。 将小波变换与用于对所得到的小波系数进行编码的树形移动技术相结合。 使用2-6小波变换。 来自变换的小波系数以小波系数的金字塔表示。 从金字塔形成一组零树，以保存小波系数，每个节点有一个系数。 计算每个节点的意义值，以协助树状行走和编码。 遍历每个零树以产生编码比特的输出。 编码位在树木步行期间直接输出。