Method for transmitting/receiving internet-based content and transmitter/receiver using same

Abstract

The present invention relates to a method for transmitting/receiving contents through a network such as the Internet, and to a transmitter/receiver using same, the transmission method comprising: converting content stored in a file format into a delivery format; and transmitting the content converted into the delivery format using an IP packet, wherein the file format and/or the delivery format includes priority information for expressing whether data that makes up the content is played back in default.

What is claimed is: 
     
         1 - 20 . (canceled) 
     
     
         21 . A method of transmitting one or more media contents data entities composing a presentation, the method comprising:
 converting one or more media contents data entities of a file format into a first one or more packets of a delivery format;   converting signaling information including composition information for the one or more media contents data entities into a second one or more packets of the delivery format; and   transmitting the first one or more packets of the delivery format and the second one or more packets of the delivery format,   wherein each media content data entity is each video of multi-video of the presentation,   wherein the composition information includes:
 a start time representing start time for the each media contents data entity and representing a time to start the each media contents data entities during the presentation; and 
 an end time representing end time for the each media contents data entity and representing a time to stop each media contents data entities during the presentation, 
   wherein each of the first one or more packets of the delivery format includes a payload and a length of data including the payload,   wherein each of the first one or more packets of the delivery format has a variable length.   
     
     
         22 . A method of receiving one or more media contents data entities composing a presentation, the method comprising:
 receiving packets;   demultiplexing the packets into a first one or more packets of a delivery format and a second one or more packets of the delivery format;   extracting signaling information, from the first one or more packets of the delivery format, including composition information; and   extracting the one or more media contents data entities of a file format from the first one or more packets of the delivery format,   wherein each media content data entity is each video of multi-video of the presentation,   wherein the composition information includes:
 a start time represents start time for the each media contents data entity and representing a time to start the each media contents data entities during the presentation; and 
 an end time represents end time for the each media contents data entity and representing a time to stop the each media contents data entities during the presentation, 
   wherein each of the first one or more packets of the delivery format includes a payload and a length of data including the payload,   wherein the each of the first one or more packets of the delivery format has a variable length.   
     
     
         23 . A device of transmitting one or more media contents data entities composing a presentation, the method comprising:
 a format conversion unit for converting one or more media contents data entities of a file format into a first one or more packets of a delivery format, and for converting signaling information including composition information for the one or more media contents data entities into a second one or more packets of the delivery format; and   a packet transmission unit for transmitting the first one or more packets of the delivery format and the second one or more packets of the delivery format,   wherein each media content data entity is each video of multi-video or each audio of multi-audio of the program,   wherein the composition information includes:
 a start times representing start time for the each media contents data entity and representing a time to start the one or more media contents data entities during the presentation; and 
 an end time representing end time for the each media contents data entity and representing a time to stop the one or more media contents data entities during the presentation, 
   wherein each of the first one or more packets of the delivery format includes a payload and a length of data including the payload,   wherein each of the first one or more packets of the delivery format has a variable length.   
     
     
         24 . A device of receiving one or more media contents data entities composing a presentation, the method comprising:
 a receiving unit for receiving packets;   a demultiplexing unit for demultiplexing the packets into a first one or more packets of a delivery format and a second one or more packets of the delivery format;   a format conversion unit for extracting signaling information, from the packets of the second delivery format, including composition information, and for extracting the one or more media contents data entities of a file format from the first one or more packets of the delivery format,   wherein each media content data entity is each video of multi-video of the presentation,   wherein the composition information includes:
 a start time represents start time for the each media contents data entity and representing a time to start the one or more media contents data entities during the presentation; and 
 an end time represents end time for the each media contents data entity and representing a time to stop the one or more media contents data entities during the presentation, 
   wherein each of the first packet of the delivery format includes a payload and a length of data including the payload,   wherein each of the first one or more packets of the delivery format has a variable length.