公开(公告)号：CA2600455A1

公开(公告)日：2006-09-21

申请号：CA2600455

申请日：2006-03-10

Applicant: QUALCOMM INC

Inventor： CHEN PEISONG

IPC: H04N7/26

Abstract: Methods and apparatus for coding multimedia data such as video data are disclosed. In some embodiments, such methods and apparatus determine an appropriate quantization parameter to be used for effectively coding such multimedia data.

公开(公告)号：CA2600450A1

公开(公告)日：2006-09-21

申请号：CA2600450

申请日：2006-03-10

Applicant: QUALCOMM INC

Inventor： CHEN PEISONG ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: H04N7/26 ,  H04N7/50

Abstract: Some embodiments comprise a method of decoding a video bitstream that include receiving a first layer of data and a second layer of data, combining the received first layer data and the received second layer data, and decoding the combined data. Also, a method of video encoding that includes selecting data for encoding in a first layer and a second layer so as to allow decoding of the data in a single combined layer, and encoding the selected data in the first layer and in the second layer by encoding a coefficient in the first layer and encoding a differential refinement to the first layer coefficient in the second layer.

公开(公告)号：AU2006223287A1

公开(公告)日：2006-09-21

申请号：AU2006223287

申请日：2006-03-10

Applicant: QUALCOMM INC

Inventor： SETHI SUMEET SINGH ,  OGUZ SEYFULLAH HALIT ,  CHEN PEISONG ,  SHI FANG ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: H04N19/895 ,  H04N19/89

Abstract: A method and apparatus for multi-layer integration for use in error recovery is disclosed. An error is detected in a multimedia data based on a first layer protocol and the detected error in the multimedia data is concealed based on a second layer protocol. In one aspect, the error in a multimedia data is detected based on a communication layer protocol and controlled based on a transport layer protocol. An error distribution of the controlled error is then determined based on a sync layer protocol and the detected error in the multimedia data is concealed based on an application layer protocol. In another aspect, a method and apparatus for multimedia data processing comprises error recovery as well as scalability.; Finally, a method and apparatus as disclosed allows processing of multimedia stream by receiving multiple streams of encoded multimedia data, performing error recovery on an erroneous portion of a stream, and reconstructing the multimedia data from the multiple streams.

公开(公告)号：AU2006223285A1

公开(公告)日：2006-09-21

申请号：AU2006223285

申请日：2006-03-10

Applicant: QUALCOMM INC

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  CHEN PEISONG

IPC: H04N7/26 ,  H04N7/50

Abstract: Some embodiments comprise a method of decoding a video bitstream that include receiving a first layer of data and a second layer of data, combining the received first layer data and the received second layer data, and decoding the combined data. Also, a method of video encoding that includes selecting data for encoding in a first layer and a second layer so as to allow decoding of the data in a single combined layer, and encoding the selected data in the first layer and in the second layer by encoding a coefficient in the first layer and encoding a differential refinement to the first layer coefficient in the second layer.

公开(公告)号：AU2006223197A1

公开(公告)日：2006-09-21

申请号：AU2006223197

申请日：2006-03-10

Applicant: QUALCOMM INC

Inventor： CHEN PEISONG

IPC: H04N7/26

Abstract: Methods and apparatus for coding multimedia data such as video data are disclosed. In some embodiments, such methods and apparatus determine an appropriate quantization parameter to be used for effectively coding such multimedia data.

公开(公告)号：EP1877959A4

公开(公告)日：2013-01-02

申请号：EP06752235

申请日：2006-05-03

Applicant: QUALCOMM INC

Inventor： CHEN PEISONG ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: H04N7/26 ,  H04N7/12 ,  H04N7/50 ,  H04N11/02 ,  H04N11/04

CPC classification number: H04N19/36 ,  H04N19/103 ,  H04N19/105 ,  H04N19/136 ,  H04N19/139 ,  H04N19/14 ,  H04N19/176 ,  H04N19/18 ,  H04N19/187 ,  H04N19/30 ,  H04N19/31 ,  H04N19/61 ,  H04N19/70

Abstract: A method of processing multimedia data being associated with multiple layers is disclosed. The method may include determining a base layer residual and performing interlayer prediction to generate an enhancement layer residual if at least one of a number of non-zero coefficients of the base layer residual or a number of zero coefficients of the base layer residual meets a first selected condition. A method of decoding a multimedia bitstream may include receiving a multimedia bitstream having a base layer and an enhancement layer and decoding the base layer to determine whether the enhancement layer should be decoded using intralayer prediction or interlayer prediction.

Abstract translation: 处理多媒体数据的方法被具有多个层的相关联的盘游离缺失。 该方法可以包括确定挖掘基本层残差和执行层间预测以产生增强层残差，如果若干基本层的非零系数的剩余或多项所述的基本层残差的零系数的中的至少一个满足第一 选定的条件。 进行解码的多媒体位流的方法可以包括：接收具有基本层多媒体位流和在增强层和基本层，以确定性矿无论增强层shoulderstand使用帧内层预测或层间预测被解码的解码。

公开(公告)号：EP1880471A4

公开(公告)日：2011-12-28

申请号：EP06759897

申请日：2006-05-15

Applicant: QUALCOMM INC

Inventor： RAVEENDRAN VIJAYALAKSHMI R ,  CHEN PEISONG ,  TIAN TAO

IPC: H03M7/42

CPC classification number: H03M7/425 ,  H03M7/40

Abstract: Embodiments include systems and methods of improving processing in a decoder in a multimedia transmission system. Multimedia data may include one or more of motion video, audio, still images, or any other suitable type of audio-visual data. One embodiment includes a system and method of parsing fixed and variable length codes from a bit-wise stream of multi-media data by maintaining and reading the data in a processor aligned (e.g., word aligned) way. Another embodiment includes a system and method of decoding variable length codes, particular as received from such a variable length code using multiple levels of decoding tables to speed up decoder table lookup.

公开(公告)号：WO2011103209A3

公开(公告)日：2012-09-13

申请号：PCT/US2011025122

申请日：2011-02-16

Applicant: QUALCOMM INC ,  JOSHI RAJAN L ,  CHEN PEISONG ,  KARCZEWICZ MARTA

Inventor： JOSHI RAJAN L ,  CHEN PEISONG ,  KARCZEWICZ MARTA

IPC: H04N7/26

CPC classification number: H04N19/523 ,  H04N19/186 ,  H04N19/513 ,  H04N19/61

Abstract: A video coding unit may be configured to encode or decode chrominance blocks of video data by reusing motion vectors for corresponding luminance blocks. A motion vector may have greater precision for chrominance blocks than luminance blocks, due to downsampling of chrominance blocks relative to corresponding luminance blocks. The video coding unit may interpolate values for a reference chrominance block by selecting interpolation filters based on the position of the pixel position pointed to by the motion vector. For example, a luminance motion vector may have one-quarter-pixel precision and a chrominance motion vector may have one-eighth-pixel precision. There may be interpolation filters associated with the quarter-pixel precisions. The video coding unit may use interpolation filters either corresponding to the pixel position or neighboring pixel positions to interpolate a value for the pixel position pointed to by the motion vector.

Abstract translation: 视频编码单元可以被配置为通过重新使用对应的亮度块的运动矢量来对视频数据的色度块进行编码或解码。 由于色度块相对于对应亮度块的下采样，运动矢量可能具有比亮度块更高的色度块精度。 视频编码单元可以通过基于由运动矢量指向的像素位置的位置来选择内插滤波器来内插参考色度块的值。 例如，亮度运动矢量可以具有四分之一像素精度，并且色度运动矢量可以具有八分之一像素的精度。 可以存在与四分之一像素精度相关联的内插滤波器。 视频编码单元可以使用对应于像素位置或相邻像素位置的插值滤波器来内插由运动矢量指向的像素位置的值。

公开(公告)号：WO2007038727A2

公开(公告)日：2007-04-05

申请号：PCT/US2006037996

申请日：2006-09-27

Applicant: QUALCOMM INC ,  CHEN PEISONG ,  OGUZ SEYFULLAH HALIT

Inventor： CHEN PEISONG ,  OGUZ SEYFULLAH HALIT

IPC: H04N7/26 ,  H04N7/50 ,  H04N19/895

CPC classification number: G06F17/147 ,  H04N19/102 ,  H04N19/159 ,  H04N19/174 ,  H04N19/42 ,  H04N19/593 ,  H04N19/61 ,  H04N19/895

Abstract: Methods and apparatus to process multimedia data enabling efficient partial decoding of transform coded data are described. A decoder device receives transform coefficients, where the transform coefficients are associated with multimedia data. The decoder device determines a set of multimedia samples to be reconstructed. In one aspect, the set of samples to be reconstructed is a subset of a matrix of transformed multimedia samples. The decoder device determines a set of transform coefficients to be used to reconstruct the multimedia samples. In one aspect, the transform coefficients are used to scale partial basis images associated with the encoding method used to generate the transform coefficients, resulting in reconstructed multimedia samples.

Abstract translation: 描述了用于处理多媒体数据的方法和设备，使得能够对变换编码数据进行有效的部分解码。 解码器设备接收变换系数，其中变换系数与多媒体数据相关联。 解码器设备确定要被重构的一组多媒体样本。 在一个方面，要被重构的样本集合是经变换的多媒体样本的矩阵的子集。 解码器设备确定要用于重构多媒体采样的一组变换系数。 在一个方面，使用变换系数来缩放与用于生成变换系数的编码方法相关联的部分基础图像，从而导致重构的多媒体样本。

公开(公告)号：WO2006099221A3

公开(公告)日：2007-01-04

申请号：PCT/US2006008761

申请日：2006-03-10

Applicant: QUALCOMM INC ,  CHEN PEISONG ,  RAVEENDRAN VIJAYALAKSHMI R

Inventor： CHEN PEISONG ,  RAVEENDRAN VIJAYALAKSHMI R

IPC: H04N7/26 ,  H04N7/50

CPC classification number: H04L65/607 ,  H04N19/126 ,  H04N19/36 ,  H04N19/37 ,  H04N19/423 ,  H04N19/436 ,  H04N19/44 ,  H04N19/61

Abstract: Some embodiments comprise a method of decoding a video bitstream that include receiving a first layer of data and a second layer of data, combining the received first layer data and the received second layer data, and decoding the combined data. Also, a method of video encoding that includes selecting data for encoding in a first layer and a second layer so as to allow decoding of the data in a single combined layer, and encoding the selected data in the first layer and in the second layer by encoding a coefficient in the first layer and encoding a differential refinement to the first layer coefficient in the second layer. A reduction of the number of dequantization steps to one is achieved in order to support pipelined dequantization in the hardware core.

Abstract translation: 一些实施例包括对包括接收第一数据层和第二数据层的视频比特流进行解码的方法，组合接收到的第一层数据和接收到的第二层数据，以及对组合的数据进行解码。 另外，一种视频编码方法，其包括在第一层和第二层中选择用于编码的数据，以允许对单个组合层中的数据进行解码，并且通过在第一层和第二层中对所选择的数据进行编码 对第一层中的系数进行编码，并将差分精化编码为第二层中的第一层系数。 为了支持在硬件核心中的流水线去量化，实现了去量化步骤数量的减少。