公开(公告)号：WO2008086316A3

公开(公告)日：2009-08-20

申请号：PCT/US2008050443

申请日：2008-01-07

Applicant: QUALCOMM INC ,  KARCZEWICZ MARTA ,  CHUNG HYUKJUNE ,  SAGETONG PHOOM

Inventor： KARCZEWICZ MARTA ,  CHUNG HYUKJUNE ,  SAGETONG PHOOM

IPC: H04N19/13 ,  H04N19/60

CPC classification number: H04N19/463 ,  H04N19/13 ,  H04N19/176 ,  H04N19/196 ,  H04N19/30 ,  H04N19/61

Abstract: Variable length coding (VLC) techniques are described for coded block patterns (CBPs) used in block-based video coding. In VLC of CBPs, patterns of transform coefficients that are more likely to occur are coded with shorter codes, while patterns of coefficients that are less likely to occur are coded with longer codes. According to the techniques of this disclosure, several different VLC tables are stored in the coding devices. During the encoding and decoding processes, one of the VLC tables is selected and used to perform the coding of CBPs for a given video block. The table may be selected based on a number of neighboring video blocks to the current video block that include non-zero transform coefficients. The techniques may be particularly useful in the coding of video blocks of enhancement layers in scalable video coding (SVC).

Abstract translation: 对基于块的视频编码中使用的编码块模式（CBP）描述了可变长度编码（VLC）技术。 在CBP的VLC中，更可能发生的变换系数的模式用较短的代码进行编码，而不太可能发生的系数模式用较长的代码进行编码。 根据本公开的技术，几个不同的VLC表被存储在编码装置中。 在编码和解码过程中，选择VLC表之一并用于对给定的视频块执行CBP的编码。 可以基于包括非零变换系数的当前视频块的相邻视频块的数量来选择该表。 这些技术在可扩展视频编码（SVC）中的增强层的视频块的编码中可能特别有用。

公开(公告)号：WO2007115127A2

公开(公告)日：2007-10-11

申请号：PCT/US2007065548

申请日：2007-03-29

Applicant: QUALCOMM INC ,  REZNIK YURIY ,  LUDWIN ALBERT SCOTT ,  CHUNG HYUKJUNE ,  GARUDADRI HARINATH ,  SRINIVASAMURTHY NAVEEN B ,  SAGETONG PHOOM

Inventor： REZNIK YURIY ,  LUDWIN ALBERT SCOTT ,  CHUNG HYUKJUNE ,  GARUDADRI HARINATH ,  SRINIVASAMURTHY NAVEEN B ,  SAGETONG PHOOM

IPC: G06F17/14

CPC classification number: G06F17/14 ,  G06F17/147 ,  H04N19/42 ,  H04N19/61

Abstract: Techniques for efficiently performing full and scaled transforms on data received via full and scaled interfaces, respectively, are described. A full transform is a transform that implements the complete mathematical description of the transform. A full transform operates on or provides full transform coefficients. A scaled transform is a transform that operates on or provides scaled transform coefficients, which are scaled versions of the full transform coefficients. The scaled transform may have lower computational complexity whereas the full transform may be simpler to use by applications. The full and scaled transforms may be for a 2D IDCT, which may be implemented in a separable manner with 1D IDCTs. The full and scaled transforms may also be for a 2D DCT, which may be implemented in a separable manner with 1D DCTs. The 1D IDCTs and 1D DCTs may be implemented in a computationally efficient manner.

Abstract translation: 描述了分别对通过完整和缩放界面接收的数据进行全面和缩放变换的技术。 全变换是实现变换的完整数学描述的变换。 完全变换在全变换系数上运行或提供全变换系数。 缩放变换是对或者提供缩放变换系数的变换，其是全变换系数的缩放版本。 缩放变换可能具有较低的计算复杂度，而全变换可能更易于由应用使用。 完整和缩放的变换可以用于2D IDCT，其可以用1D IDCT以可分离的方式实现。 完整和缩放变换也可以用于2D DCT，其可以用1D DCT以可分离的方式实现。 1D IDCT和1D DCT可以以计算有效的方式实现。

公开(公告)号：WO2008086509A3

公开(公告)日：2008-11-27

申请号：PCT/US2008050822

申请日：2008-01-10

Applicant: QUALCOMM INC ,  GARUDADRI HARINATH ,  SUNDARRAMAN CHANDRU ,  VIJ GAJINDER ,  SRINIVASAMURTHY NAVEEN B ,  SAGETONG PHOOM

Inventor： GARUDADRI HARINATH ,  SUNDARRAMAN CHANDRU ,  VIJ GAJINDER ,  SRINIVASAMURTHY NAVEEN B ,  SAGETONG PHOOM

IPC: H04L12/801 ,  H04L29/06

CPC classification number: H04L65/4092 ,  H04L47/10 ,  H04L65/1059 ,  H04L65/602 ,  H04L65/80 ,  H04W72/08

Abstract: This disclosure describes techniques that can facilitate multimedia telephony. In one example, a method for communication of multimedia data comprises determining a first level of throughput associated with multimedia data communication from a first access terminal to a network, determining a second level of throughput associated with multimedia data communication from the network to a second access terminal based on feedback from the second access terminal to the first access terminal via the network, determining a budget associated with communication of a video unit of the multimedia data, and coding the video unit of the multimedia data based on the budget and the first and second levels of throughput.

Abstract translation: 本公开描述了可以促进多媒体电话的技术。 在一个示例中，用于通信多媒体数据的方法包括确定与从第一接入终端到网络的多媒体数据通信相关联的吞吐量的第一级别，确定与从网络到第二接入的多媒体数据通信相关联的吞吐量的第二级别 基于从所述第二接入终端经由所述网络到所述第一接入终端的反馈，确定与所述多媒体数据的视频单元的通信相关联的预算，以及基于所述预算对所述多媒体数据的视频单元进行编码，以及 第二级吞吐量。

公开(公告)号：WO2007047478A2

公开(公告)日：2007-04-26

申请号：PCT/US2006040165

申请日：2006-10-12

Applicant: QUALCOMM INC ,  REZNIK YURIY ,  CHUNG HYUKJUNE ,  GARUDADRI HARINATH ,  SRINIVASAMURTHY NAVEEN D ,  SAGETONG PHOOM

Inventor： REZNIK YURIY ,  CHUNG HYUKJUNE ,  GARUDADRI HARINATH ,  SRINIVASAMURTHY NAVEEN D ,  SAGETONG PHOOM

CPC classification number: G06F17/147 ,  H03H17/0225 ,  H04N19/42 ,  H04N19/60 ,  H04N19/61 ,  H04N19/70

Abstract: Techniques for efficiently performing computation for signal and data processing are described. For multiplication-free processing, a series of intermediate values is generated based on an input value for data to be processed. At least one intermediate value in the series is generated based on at least one other intermediate value in the series. One intermediate value in the series is provided as an output value for a multiplication of the input value with a constant value. The constant value may be an integer constant, a rational constant, or an irrational constant. An irrational constant may be approximated with a rational dyadic constant having an integer numerator and a denominator that is a power of twos. The multiplication-free processing may be used for various transforms (e.g., DCT and IDCT), filters, and other types of signal and data processing.

Abstract translation: 描述了用于有效执行信号和数据处理计算的技术。 对于无需乘法处理，根据要处理的数据的输入值生成一系列中间值。 基于该系列中的至少一个其它中间值，生成该系列中的至少一个中间值。 该系列中的一个中间值被提供为用于将输入值与常数值相乘的输出值。 常数值可以是整数常数，有理常数或非理性常数。 非理性常数可以用具有整数分子和二分之一的分母的有理二元常数近似。 无乘法处理可以用于各种变换（例如，DCT和IDCT），滤波器以及其它类型的信号和数据处理。

公开(公告)号：WO2005114943A3

公开(公告)日：2006-01-19

申请号：PCT/US2005016837

申请日：2005-05-13

Applicant: QUALCOMM INC ,  GARUDADRI HARINATH ,  SAGETONG PHOOM ,  NANDA SANJIV ,  LUNDBY STEIN A

Inventor： GARUDADRI HARINATH ,  SAGETONG PHOOM ,  NANDA SANJIV ,  LUNDBY STEIN A

IPC: H04B7/00 ,  H04B7/216 ,  H04L12/28 ,  H04L12/56 ,  H04L12/66 ,  H04L29/06 ,  H04N7/26 ,  H04W28/06 ,  H04W72/12 ,  H04W84/04 ,  H04W88/18 ,  H04Q7/30

CPC classification number: H04W28/06 ,  H04L29/06 ,  H04L29/06027 ,  H04L47/36 ,  H04L65/601 ,  H04L65/604 ,  H04L65/80 ,  H04L69/04 ,  H04L69/161 ,  H04L69/166 ,  H04L69/22 ,  H04N19/102 ,  H04N19/115 ,  H04N19/124 ,  H04N19/152 ,  H04N19/164 ,  H04N19/174 ,  H04N19/61 ,  H04N21/2381 ,  H04N21/41407 ,  H04N21/44004 ,  H04N21/4788 ,  H04N21/6131 ,  H04N21/6181 ,  H04N21/6437 ,  H04N21/64707 ,  H04W4/06 ,  H04W28/065 ,  H04W72/044 ,  H04W72/1263 ,  H04W80/00 ,  H04W84/04 ,  H04W88/02 ,  H04W88/181

Abstract: Methods and apparatus are described for transmitting information units over a plurality of constant bit rate communication channel. The techniques include encoding the information units, thereby creating a plurality of data packets. The encoding is constrained such that the data packet sizes match physical layer packet sizes of the communication channel. The information units may include a variable bit rate data stream, multimedia data, video data, and audio data. The communication channels include CMDA channels, WCDMA, GSM channels, GPRS channels, and EDGE channels.

Abstract translation: 描述了用于通过多个恒定比特率通信信道发送信息单元的方法和装置。 这些技术包括对信息单元进行编码，从而创建多个数据分组。 编码被约束，使得数据分组大小与通信信道的物理层分组大小相匹配。 信息单元可以包括可变比特率数据流，多媒体数据，视频数据和音频数据。 通信信道包括CMDA信道，WCDMA，GSM信道，GPRS信道和EDGE信道。