公开(公告)号：WO2008061211A3

公开(公告)日：2009-01-29

申请号：PCT/US2007084885

申请日：2007-11-15

Applicant: QUALCOMM INC ,  WALKER GORDON KENT ,  RAVEENDRAN VIJAYALAKSHMI R ,  LOUKAS JR SERAFIM S ,  OGUZ SEYFULLAH HALIT ,  SHI FANG ,  SUBRAMANIA SITARAMAN GANAPATHY ,  BHAMIDIPATI PHANIKUMAR ,  DETERMAN JAMES T

Inventor： WALKER GORDON KENT ,  RAVEENDRAN VIJAYALAKSHMI R ,  LOUKAS SERAFIM S JR ,  OGUZ SEYFULLAH HALIT ,  SHI FANG ,  SUBRAMANIA SITARAMAN GANAPATHY ,  BHAMIDIPATI PHANIKUMAR ,  DETERMAN JAMES T

IPC: H04N5/445 ,  H04N7/16

CPC classification number: H04N7/163 ,  H04N21/234327 ,  H04N21/235 ,  H04N21/278 ,  H04N21/4316 ,  H04N21/435 ,  H04N21/4384 ,  H04N21/44004 ,  H04N21/4438 ,  H04N21/47 ,  H04N21/4858 ,  H04N21/6405

Abstract: Techniques for video encoding and decoding a common guide media logic channel (MLC) to enable fast acquisition and re/synchronization of the video stream while preserving compression efficiency are provided. Systems and methods to process multimedia data using channel switch frames are presented. The system comprises an encoder operative to generate a common guide media logical channel (MLC) of a plurality of channel switch frames (CSFs), each respective active channel having one or more CSFs in the guide MLC. The decoder in the system is operative to decode a set of the plurality of CSFs from the guide MLC. The decoder simultaneously displays programming content of the decoded set of the plurality of CSFs on a display and automatically switches to a primary bitstream of an active channel associated with a selected one displayed CSF.

Abstract translation: 提供了用于视频编码和解码通用引导媒体逻辑信道（MLC）的技术，以实现视频流的快速采集和再同步，同时保持压缩效率。 介绍了使用信道交换帧处理多媒体数据的系统和方法。 该系统包括编码器，其可操作以生成多个信道切换帧（CSF）的公共引导媒体逻辑信道（MLC），每个相应的活动信道在引导MLC中具有一个或多个CSF。 系统中的解码器可操作以从引导MLC解码多个CSF的集合。 解码器同时在显示器上显示多个CSF的解码集合的编程内容，并且自动切换到与所选择的所显示的CSF相关联的活动信道的主比特流。