METHOD OF SYNCHRONIZING TEXT DATA WITH MPEG-1 MULTIMEDIA STREAM AND MPEG-1 DECODER

摘要

PURPOSE: A method of synchronizing text data with MPEG-1 multimedia stream and an MPEG-1 decoder are to multiplex text information in an MPEG-1 system stream in which audio and video are already synchronized, thereby economically and efficiently performing synchronizing operation of the text information. CONSTITUTION: Text data are divided into each slide as a synchronization unit. A time stamp showing time when a corresponding slide has to be reproduced is provided at each slide. Each slide is encoded with a predetermined bit style (slide frame) to form a text bit row. A slide bit row of a text bit row is packetized. Each packet is inserted into a determined position of the MPEG-1 system bit row according to a reproducing hour time stamp of the slide included in the packet to generate an MPEG-1 system bit row synchronized with text information in a multiplexing process. The slide frame forming the text bit row includes slide starting code, slide length, reproducing hour information, slide data and additional data field.