公开(公告)号：WO2008061164A2

公开(公告)日：2008-05-22

申请号：PCT/US2007084727

申请日：2007-11-14

Applicant: QUALCOMM INC ,  SHI FANG ,  BENNETT CHRISTOPHER JOHN ,  LOUKAS SERAFIM S JR ,  ORR BRIAN WILLIAM ,  RAVEENDRAN VIJAYALAKSHMI R ,  SWAZEY SCOTT T ,  SILBERGER AMNON ,  CHEN AN MEI ,  NAGARAJ THADI ,  WALKER GORDON KENT ,  BRACKMAN DAVID ,  LIU FANG ,  SETHI SUMEET ,  SAMPATHKUMAR RAMKUMAR

Inventor： SHI FANG ,  BENNETT CHRISTOPHER JOHN ,  LOUKAS SERAFIM S JR ,  ORR BRIAN WILLIAM ,  RAVEENDRAN VIJAYALAKSHMI R ,  SWAZEY SCOTT T ,  SILBERGER AMNON ,  CHEN AN MEI ,  NAGARAJ THADI ,  WALKER GORDON KENT ,  BRACKMAN DAVID ,  LIU FANG ,  SETHI SUMEET ,  SAMPATHKUMAR RAMKUMAR

IPC: H04N7/24 ,  H04N19/89 ,  H04N19/895

CPC classification number: H04N21/44016 ,  H04N19/107 ,  H04N19/187 ,  H04N19/31 ,  H04N19/61 ,  H04N19/68 ,  H04N19/70 ,  H04N19/89 ,  H04N21/23424 ,  H04N21/234327 ,  H04N21/4384 ,  H04N21/8451 ,  H04N21/8456

Abstract: Techniques for video encoding and decoding channel switch frames (CSF) to enable acquisition and re/synchronization of the video stream while preserving compression efficiency is provided. Systems and methods to process multimedia data enabling channel switching are presented. The systems generate a CSF with one or more network adaptation layer (NAL) units as a random access point (RAP) frame. Back-to-back frames are transmitted which include the CSF and a non-RAP frame, each having the same frame ID number.

Abstract translation: 提供了视频编码和解码通道切换帧（CSF）的技术，以实现视频流的获取和再同步，同时保持压缩效率。 提出了处理能够进行通道切换的多媒体数据的系统和方法。 系统产生具有一个或多个网络适配层（NAL）单元的CSF作为随机接入点（RAP）帧。 发送背靠背帧，其包括CSF和非RAP帧，每个帧具有相同的帧ID号。

公开(公告)号：WO2007090176A3

公开(公告)日：2008-02-07

申请号：PCT/US2007061416

申请日：2007-01-31

Applicant: QUALCOMM INC ,  SHAH DEVARSHI ,  GUPTA BINITA ,  SWAZEY SCOTT T ,  DALEY ROBERT S ,  DAHL STEN JORGEN ,  NAGARAJ THADI M ,  KAUSHIK VINOD ,  LOUKAS SERAFIM S JR ,  RAVEENDRAN VIJAYALAKSHMI R ,  COLLINS BRUCE

Inventor： SHAH DEVARSHI ,  GUPTA BINITA ,  SWAZEY SCOTT T ,  DALEY ROBERT S ,  DAHL STEN JORGEN ,  NAGARAJ THADI M ,  KAUSHIK VINOD ,  LOUKAS SERAFIM S JR ,  RAVEENDRAN VIJAYALAKSHMI R ,  COLLINS BRUCE

IPC: H04N7/26 ,  H04N7/50 ,  H04N17/00

CPC classification number: H04N19/00 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/006 ,  H04L5/023 ,  H04L27/2608 ,  H04L29/06027 ,  H04L65/605 ,  H04L65/607 ,  H04L65/80 ,  H04N19/115 ,  H04N19/124 ,  H04N19/15 ,  H04N19/154 ,  H04N19/164 ,  H04N19/19 ,  H04N19/194 ,  H04N19/61 ,  H04N21/2365 ,  H04N21/23655 ,  H04N21/4347

Abstract: In general, this disclosure describes techniques for exchanging information between a plurality of encoder modules and a multiplex module to combine segments of data from the encoder modules with an improved overall quality. In particular, the encoder modules associate their respective segments of data with quality and rate information and send at least the quality and rate information associated with the segments of data to the multiplex module. The multiplex module analyzes the quality and rate information to determine whether the segments of data that encoder modules desire to include in the current superframe fit within the available bandwidth of a transmission channel. If the multiplex module determines the plurality of segments of data do not fit within the available bandwidth, the multiplex module selects one or more of the segments to be resized based on the quality and rate information received from the encoder modules.

Abstract translation: 通常，本公开描述了用于在多个编码器模块和多路复用模块之间交换信息的技术，以组合来自编码器模块的数据段与改进的总体质量。 特别地，编码器模块将它们各自的数据段与质量和速率信息相关联，并将至少与数据段相关联的质量和速率信息发送到多路复用模块。 多路复用模块分析质量和速率信息，以确定编码器模块希望在当前超帧中包括的数据段是否适合传输信道的可用带宽内。 如果复用模块确定多个数据段不适合可用带宽，则多路复用模块基于从编码器模块接收的质量和速率信息来选择要调整大小的一个或多个段。