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1. CN1459198 - System and method of processing MPEG stream for file index insertion

Office
China
Application Number 01815683.5
Application Date 13.09.2001
Publication Number 1459198
Publication Date 26.11.2003
Grant Number 100391260
Grant Date 28.05.2008
Publication Kind C
IPC
H04N 7/24
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
24Systems for the transmission of television signals using pulse code modulation
CPC
G11B 27/002
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
27Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
002Programmed access in sequence to a plurality of record carriers or indexed parts, e.g. tracks, thereof, e.g. for editing;
G11B 27/032
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
27Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
02Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
031Electronic editing of digitised analogue information signals, e.g. audio or video signals
032on tapes
G11B 27/11
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
27Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
10Indexing; Addressing; Timing or synchronising; Measuring tape travel
11by using information not detectable on the record carrier
G11B 27/34
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
27Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
10Indexing; Addressing; Timing or synchronising; Measuring tape travel
34Indicating arrangements
G11B 2220/41
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
2220Record carriers by type
40Combinations of multiple record carriers
41Flat as opposed to hierarchical combination, e.g. library of tapes or discs, CD changer, or groups of record carriers that together store one title
G11B 2220/90
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
2220Record carriers by type
90Tape-like record carriers
Applicants International Basiness Machines Corp.
国际商业机器公司
Inventors John M. Zetts
约翰·M·泽茨
Agents di wankui huang xiaolin
北京市柳沈律师事务所
北京市柳沈律师事务所
Priority Data 09860700 18.05.2001 US
60/232,893 15.09.2000 US
Title
(EN) System and method of processing MPEG stream for file index insertion
(ZH) 处理MPEG流以插入文件索引的系统和方法
Abstract
(EN)
A method, apparatus and article of manufacture is provided for automatic insertion of a compressed GOP offset table within a previously encoded MPEG video file, for frame accurate random access of each individual video frame in play-from-offset mode. The method creates a compressed GOP offset table having an entry for each GOP header of every video packet of the MPEG video file, and modifies the MPEG video file by inserting the compressed GOP offset table before the MPEG video file as at least one padding packet, thereby preserving the MPEG compliance and compressed audio/video data of the MPEG video file. The method further has a step for estimating a number of padding packets needed for the GOP offset table, thereby limiting the MPEG video file reading to a single read.

(ZH)

本发明提供一种用来在先前编码的MPEG视频文件内自动插入压缩GOP偏移表,以在“从指定偏移开始播放”模式下对各个视频帧进行准确的随机访问的方法、装置和制品。该方法创建一个压缩GOP偏移表,其中的条目各自对应于MPEG视频文件的每个视频分组的每个GOP首标,并且通过作为至少一个填充分组在MPEG视频文件之前插入压缩GOP偏移表来修改MPEG视频文件,从而保持MPEG视频文件的MPEG兼容性和压缩音频/视频数据。该方法还包括如下步骤:估计GOP偏移表所需的填充分组数,从而将MPEG视频文件读取限于一次读取。