APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING CONTENTS BASED ON INTERNET

摘要

PURPOSE: An internet based content transception method and a transception apparatus using the same are provided to reduce overhead according to the inclusion of unnecessary information by transmitting a transmission format of content transmitted through the internet in the payload of an IP packet. CONSTITUTION: A transmission device sets up a time window and determines a transmission time of program specific information (PSI) /service information (SI) (S310,S320). In case of reaching the transmission time of the PSI/SI, the transmission device confirms whether the PSI/SI are changed to be transmitted and updates the version of the PSI and the SI (S330,S340). The transmission device converts the PSI/SI into a transmission format (S350). In case of not reaching the transmission time of the PSI/SI, the transmission device converts an audio/video/subtitle mdat into the transmission format according to the set time window (S360). [Reference numerals] (AA) Start; (BB,DD) Yes; (CC,EE) No; (FF) End; (S300) Extract PSI/SI from trak (PSI/SI) in a moov box; (S310) Set up a time window; (S320) Is the PSI/SI transmitted?; (S330) Is the PSI/SI changed?; (S340) Update a version; (S350) Convert the PSI/SI into a transmission format; (S360) Convert audio/video/subtitle mdat into a transmission format according to the set up time window; (S370) Transmit contents which are converted into the transmission format