Method and apparatus for transmitting compressed data using digital data interface, and method and apparatus for receiving compressed data using digital data interface

A method of transmitting display-related information from a synchronization apparatus to a source apparatus via a digital data interface of the synchronization apparatus, the method comprising:

• generating the display-related information into which information about a playback capability of the synchronization apparatus has been inserted;
• and
• inserting information about a compressed data playback capability of the synchronization apparatus into the display-related information,
• wherein the display-related information comprises a data structure transceivable via the digital data interface.

A method of transmitting media data from a source apparatus to a synchronization apparatus via a digital data interface of the synchronization apparatus, the method comprising:

• forming a media data structure comprising compressed data obtained by compressing raw data;
• inserting ancillary data for the raw data into an ancillary data field included in the media data structure;
• and
• inserting compression-related information about the compressed data into the ancillary data field of the media data structure,
• wherein the media data structure is a data structure transceivable via the digital data interface.

A method of receiving display-related information via a digital data interface of a source apparatus, the method comprising:

• parsing the received display-related information;
• extracting information about a playback capability of a synchronization apparatus from the parsed display-related information;
• and
• extracting information about a compressed data playback capability of the synchronization apparatus from the information about the playback capability of the synchronization apparatus,
• wherein the display-related information comprises a data structure transceivable via the digital data interface.

An apparatus for transmitting display-related information from a synchronization apparatus to a source apparatus via a digital data interface of the synchronization apparatus, the apparatus comprising:

• a display-related information generation unit which generates the display-related information into which information about a playback capability of the synchronization apparatus has been inserted;
• and
• a compressed data playback capability information insertion unit which inserts information about a compressed data playback capability of the synchronization apparatus into the display-related information,
• wherein the display-related information comprises a data structure transceivable via the digital data interface.

An apparatus for receiving media data via a digital data interface of a synchronization apparatus, the apparatus comprising:

• a media data parsing unit which parses the received media data;
• a compression-related information extraction unit which extracts compression-related information about compressed data obtained by compressing raw data, from an ancillary data field of the parsed media data, wherein ancillary data for the raw data has been inserted into the ancillary data field;
• a compressed data extraction unit which extracts the compressed data from the parsed media data;
• and
• a decoding unit which decodes the compressed data by using the compression-related information,
• wherein the received media data comprises a data structure transceivable via the digital data interface.

An apparatus for transmitting media data from a source apparatus to a synchronization apparatus via a digital data interface of the synchronization apparatus, the apparatus comprising:

• a media data structure formation unit which forms a media data structure into which compressed data obtained by compressing raw data has been inserted;
• an ancillary data insertion unit which inserts ancillary data for the raw data into an ancillary data field included in the media data structure;
• and
• a compression-related information insertion unit which inserts compression-related information about the compressed data into the ancillary data field of the media data structure,
• wherein the media data structure is a data structure transceivable via the digital data interface.

An apparatus for receiving display-related information via a digital data interface of a source apparatus, the method comprising:

• a display-related information parsing unit which parses the received display-related information;
• a playback capability information extraction unit which extracts information about a playback capability of the synchronization apparatus from the parsed display-related information;
• and
• a compressed data playback capability information extraction unit which extracts information about a compressed data playback capability of the synchronization apparatus from the information about the playback capability of the synchronization apparatus,
• wherein the display-related information comprises a data structure transceivable via the digital data interface.

A system for transmitting display-related information, the system comprising:

• a synchronization apparatus connected to a source apparatus via a digital data interface, the synchronization apparatus comprising:
• a display-related information generation unit which generates the display-related information into which information about a playback capability of the synchronization apparatus has been inserted, and
• a display-related information transmission unit which transmits the display-related information to the source apparatus via the digital data interface, and
• a source apparatus comprising:
• a display-related information parsing unit which parses the display-related information transmitted from the synchronization apparatus, and
• a media data determination unit which determines a compressed data to be transmitted to the synchronization unit via the digital data interface, based on the display-related information.