Content reproduction system, content reproduction method, content reproduction device, and server

A server comprising:

• a processor;
• a memory;
• an AV data storage section configured to store a plurality of AV data segments in the memory;
• a clip information storage section configured to store a plurality of clip information in the memory, the plurality of clip information being management information of the plurality of AV data segments, wherein each of the plurality of clip information corresponds to one of the plurality of AV data segments and includes a time map table of the AV data segment;
• a content reproduction control information storage section configured to store content reproduction control information in the memory including at least one playlist, wherein the at least one playlist identifies the plurality of AV data segments using the plurality of clip information to define a reproduction order of the plurality of AV data segments;
• and
• a first transmitting/receiving section controlled by the processor and configured to:
• transmit, to a network, the plurality of AV data segments, the plurality of clip information, the content reproduction control information including the at least one playlist, and a first location information for indicating a location of the content reproduction control information,
• receive 1) a second location information indicating a location of clip information, and 2) a third location information indicating a location of one of the plurality of AV data segments, and
• wherein the second location information and the third location information are separate location information generated from the first location information based on the content reproduction control information, the second location information being generated from the first location information by replacing a clip number to a part of the first location information, the third location information being generated from the first location information by replacing the clip number to a part of the first location information and adding a reproducing range information of the AV data segment, the reproducing range information being generated by referring to the time map table of the clip information.

A content reproduction device comprising:

• a processor;
• a second transmitting/receiving section controlled by the processor and configured to at least receive, from a network, a plurality of AV data segments, a plurality of clip information, content reproduction control information including at least one playlist, and a first location information for indicating a location of the content reproduction control information;
• a content reproduction control information acquiring section configured to acquire, by the processor, the content reproduction control information from the first location information;
• a content reproduction control information analyzing section configured to extract, by the processor, from the content reproduction control information, a clip number corresponding to the one of the plurality of AV data segments;
• a clip information request generating section configured to generate, by the processor, a second location information that indicates a location of at least one of the plurality of clip information, by replacing the clip number to a part of the first location information, and configured to request the server to acquire the clip information;
• a clip information acquiring section configured to acquire, by the processor, the clip information identified by the clip number from the location indicated by the second location information;
• an AV data request generating section configured to generate, by the processor, a third location information that indicates a location of the one of the plurality of AV data segments, by replacing the clip number to a part of the first location information and adding a reproducing range information of the AV data segment, the reproducing range information being generated by referring to the time map table of the clip information, and configured to request the server to acquire the one of the plurality of AV data segments identified by the clip number;
• and
• an AV data acquiring section configured to acquire, by the processor, the one of the plurality of AV data segments identified by the clip number from the location indicated by the third location information.

A content reproduction method comprising:

• acquiring content reproduction control information based on a first location information for indicating a location of the content reproduction control information, the content reproduction control information including at least one playlist, wherein the at least one playlist identifies a plurality of AV data segments using a plurality of clip information which includes a time map table of the AV data segments, to define a reproduction order of the plurality of AV data segments;
• extracting, from the content reproduction control information including the at least one playlist, one of the plurality of AV data segments and the clip number corresponding to the one of the plurality of AV data segments;
• generating the a second location information that indicates a location of at least one of the plurality of clip information by replacing the clip number to a part of the first location information, and requesting the server to acquire the clip information identified by the clip number;
• acquiring the clip information identified by the clip number from the location indicated by the second location information;
• generating a third location information that indicates a location of the one of the plurality of AV data segments by replacing the clip number to a part of the first location information and adding a reproducing range information of the AV data segment, the reproducing range information being generated by referring to the time map table of the clip information, and requesting the server to acquire the one of the plurality of AV data segments identified by the clip number;
• acquiring the one of the plurality of AV data segments identified by the clip number from the location indicated by the third location information;
• determining whether reception of a plurality of partial AV data segments is completed when telegrams for transmission of the plurality of the partial AV data segments are repeatedly transmitted;
• and
• determining whether reception of all of the plurality of partial AV data segments is completed when the plurality of the partial AV data segments is received.