公开(公告)号：EP1884115A4

公开(公告)日：2008-08-06

申请号：EP06768652

申请日：2006-05-26

Applicant: KOREA ELECTRONICS TELECOMM ,  ALTICAST CORP

Inventor： LEE GWANG-SOON ,  YANG KYU-TAE ,  LEE BONG-HO ,  HAHM YOUNG-KWON ,  AHN CHUNG-HYUN ,  LEE SOO-IN ,  KIM DO-HYUNG

IPC: H04N7/52

CPC classification number: H04N7/56 ,  H04H20/28 ,  H04H60/06 ,  H04N21/23614 ,  H04N21/4348

Abstract: Provided is a method and apparatus for transmitting an metadata synchronized with audio/vidieo (AV) data on a satellite, terrestrial, cable or proprietary digital broadcasting network. The method includes the steps of : a) receiving an AV time stamp for the AV data; b) calculating a time stamp of the data, which is information on a time point when the data are to be presented in a user terminal, which will be shortly referred to as data time stamp hereinafter, based on the AV time stamp; c) generating sync metadata including the calculated data time stamp; and d) encoding the sync metadata and transmitting the encoded sync metadata.

Abstract translation: 提供了一种用于在卫星，地面，有线或专有数字广播网络上发送与音频/视频（AV）数据同步的元数据的方法和装置。 该方法包括以下步骤：a）接收AV数据的AV时间戳; b）根据所述AV时间标记计算所述数据的时间标记，所述数据的时间标记是关于所述数据将在用户终端中呈现的时间点的信息，以下简称为数据时间标记; c）生成包括所计算的数据时间戳的同步元数据; 和d）对同步元数据进行编码并发送编码的同步元数据。