Reproducing system and reproduction method, and data transmission device and data transmission method

A reproducing method comprising:

• generating a stream from content data stored in a storage medium at a reproducing unit;
• dividing the stream into a frame including a frame header, wherein the frame header includes information on the length of the frame;
• appending additional information to the frame, wherein the additional information indicates at least time information corresponding to a reproduction time;
• generating a communication packet including the frame and the additional information;
• including an additional header including the total data length of the communication packet in the packet;
• transmitting the communication packet onto a communication path;
• receiving the communication packet transmitted on the communication path at a remote control unit;
• removing the additional information from the received communication packet using the frame length information;
• removing the frame from the received communication packet;
• decoding the frame to produce an audio signal;
• outputting an audio signal on the basis of the reproduced content data to a speaker, earphone, or headphone;
• and
• displaying the reproduction time on the basis of the additional information in real time with the output audio signal after the taking of the additional information out of the communication packet using the frame length information.

A data transmitting apparatus for transmitting, to a remote control unit, a communication packet such that the remote control unit can display the reproduction time on the basis of additional information in real time with an output audio signal after the additional information is taken out of the communication packet using frame length information, the data transmitting apparatus comprising:

• a stream generating unit that generates a stream from the content data stored in the storage medium;
• an encoding unit that divides the stream into a frame including a frame header,
• wherein the frame header includes information on the length of the frame;
• a packet data generating unit configured to generate the communication packet including the frame, append additional information to the frame, and include an additional header including the total data length of the communication packet in the packet, wherein the additional information indicates at least time information corresponding to a reproduction time, and
• a transmitting unit configured to transmit the communication packet outputted from the packet data generating unit onto a communication path.

A data transmitting method of transmitting, to a remote control unit, a communication packet such that the remote control unit can display the reproduction time on the basis of additional information in real time with an output audio signal after the additional information is taken out of the communication packet using frame length information, the data transmitting method comprising:

• generating a stream from content data stored in a storage medium;
• dividing the stream into a frame including a frame header, wherein the frame header includes the frame length information;
• appending additional information to the frame, wherein the additional information indicates at least time information corresponding to a reproduction time;
• generating the communication packet to include the frame and the additional information;
• including an additional header to the packet including the total data length of the communication packet;
• and
• transmitting the communication packet onto a communication path.