Stream data recording device, stream data editing device, stream data reproducing device, stream data recording method, and stream data reproducing method

A stream data reproducing device that reads stream data including pieces of clock reference information from a recording medium and reproduces the stream data, the stream data reproducing device comprising:

• a reading unit operable to read the stream data;
• a time clock unit operable to count a time synchronously with a time shown by each piece of clock reference information;
• an information getting unit operable to get index information and time correction information, the index information specifying a position, in the stream data, of an invalid section where a part of the stream data was missing, and the time correction information being used for correcting the time of the time clock unit;
• a resetting unit operable to reset the time clock unit based on the time correction information, when performing reproduction at the position specified by the index information;
• and
• a reproduction control unit operable to reproduce a frame in the stream data at a predefined presentation time, based on the time of the time clock unit;
• wherein the reproduction control unit stops reproducing the frame in the stream data when the reproduction reaches a position specified by the index information and, in accordance with a time of the time clock unit after resetting by the resetting unit, resumes the reproduction from a frame in the stream data after the invalid section.

A stream data reproducing device that reads stream data including pieces of clock reference information from a recording medium and reproduces the stream data, the stream data reproducing device comprising:

• a reading unit operable to read the stream data;
• a time clock unit operable to count a time synchronously with a time shown by each piece of clock reference information;
• an information getting unit operable to get index information and time correction information, the index information specifying a position, in the stream data, of an invalid section where a part of the stream data was missing, and the time correction information being used for correcting the time of the time clock unit;
• a resetting unit operable to reset the time clock unit based on the time correction information, when performing reproduction at the position specified by the index information;
• and
• a reproduction control unit operable to reproduce a frame in the stream data at a predefined presentation time, based on the time of the time clock unit;
• wherein the time correction information includes:
• end time information showing the time of the time clock unit at an end of the invalid section when recording the stream data;
• and
• time offset information which is a difference between a time shown by a piece of clock reference information got after the end of the invalid section and the time of the time clock unit at the getting of the piece of clock reference information, when recording the stream data,
• wherein the time clock unit includes a first time clock and a second time clock each of which individually counts a time,
• wherein the resetting unit, when the stream data is read up to the position specified by the index information, sets one of the first time clock and the second time clock that is not being used by the reproduction control unit for the frame reproduction, to a time obtained by adding the end time information and the time offset information, and
• wherein the reproduction control unit, when the reproduction reaches the position specified by the index information, switches a time clock used for the frame reproduction, from the other one of the first time clock and the second time clock to the one of the first time clock and the second time clock.

A stream data reproducing device that reads stream data including pieces of clock reference information from a recording medium and reproduces the stream data, the stream data reproducing device comprising:

• a reading unit operable to read the stream data;
• a time clock unit operable to count a time synchronously with a time shown by each piece of clock reference information;
• an information getting unit operable to get index information and time correction information, the index information specifying a position, in the stream data, of an invalid section where a part of the stream data was missing, and the time correction information being used for correcting the time of the time clock unit;
• a resetting unit operable to reset the time clock unit based on the time correction information, when performing reproduction at the position specified by the index information;
• and
• a reproduction control unit operable to reproduce a frame in the stream data at a predefined presentation time, based on the time of the time clock unit
• wherein the time correction information includes:
• missing time information showing a reproduction period corresponding to the missing part of the stream data in the invalid section;
• and
• a presentation time defined in a frame of at least one of video, audio, and subtitles that is included in the stream data after an end of the invalid section,
• wherein the reproduction control unit, when the reproduction of the stream data reaches the position specified by the index information, stops the reproduction of the stream data for the reproduction period shown by the missing time information, and resumes the reproduction from the frame in which the presentation time is defined after the reproduction period has elapsed in a state where the reproduction is stopped, and
• wherein the resetting unit sets the time clock unit to the presentation time, after the reproduction period has elapsed from when the reproduction is stopped.

A stream data reproducing device that reads stream data including pieces of clock reference information from a recording medium and reproduces the stream data, the stream data reproducing device comprising:

• a reading unit operable to read the stream data;
• a time clock unit operable to count a time synchronously with a time shown by each piece of clock reference information;
• an information getting unit operable to get index information and time correction information, the index information specifying a position, in the stream data, of an invalid section where a part of the stream data was missing, and the time correction information being used for correcting the time of the time clock unit;
• a resetting unit operable to reset the time clock unit based on the time correction information, when performing reproduction at the position specified by the index information;
• a reproduction control unit operable to reproduce a frame in the stream data at a predefined presentation time, based on the time of the time clock unit;
• and
• a status display unit operable to display an object that represents an entire length of the stream data recorded on the recording medium;
• wherein, when the invalid section is located in the stream data, the status display unit displays a position of the invalid section on the object.