Information storage medium and information recording/playback system

An information recording method for recording information on an information recording medium which includes,

• a data area configured to store said audio/video data;
• and
• a management area, separate from said data area, configured to store said control information for managing said audio/video data, wherein,
• said audio/video data is recorded in object units, and when said audio/video data is edited and an object unit is or object units are re-encoded, an original one of the object units is or original ones of the object units are replaced with the re-encoded object unit or the re-encoded object units, and the recorded or re-encoded object unit or object units can be allocated or moved based on said edited audio/video data, and
• when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,
• the predetermined number of times is represented by N;
• the system transmission rate of an information reproducing apparatus used to play back said audio/video data is represented by STR,
• the physical transmission rate of a pickup head of said information reproducing apparatus is represented by PTR,
• an average seek access time of the pickup head of said information reproducing apparatus is represented by SATa,
• an average jump access time of the pickup head of said information reproducing apparatus is represented by JATa,
• an average rotation wait time of the pickup head of said information reproducing apparatus is represented by MWTa, and
• N is less than or equal to 1/{[1+STR/(PTR−STR)]*(SATa+JATa+MWTa)},
• the information recording method comprising:
• recording said audio/video data in said data area;
• and
• recording said control information in said management area.

An information reproducing method for reproducing information on an information recording medium which includes,

• a data area including said audio/video data;
• and
• a management area, separate from said data area, including said control information for managing said audio/video data, wherein,
• said audio/video data is recorded in object units, and when said audio/video data is edited and an object unit is or object units are re-encoded, an original one of the object units is or original ones of the object units are replaced with the re-encoded object unit or the re-encoded object units, and the recorded or re-encoded object unit or object units can be allocated or moved based on said edited audio/video data, and
• when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,
• the predetermined number of times is represented by N;
• the system transmission rate of an information reproducing apparatus used to play back said audio/video data is represented by STR,
• the physical transmission rate of a pickup head of said information reproducing apparatus is represented by PTR,
• an average seek access time of the pickup head of said information reproducing apparatus is represented by SATa,
• an average jump access time of the pickup head of said information reproducing apparatus is represented by JATa,
• an average rotation wait time of the pickup head of said information reproducing apparatus is represented by MWTa, and
• N is less than or equal to 1/{[1+STR/(PTR−STR)]*(SATa+JATa+MWTa)},
• the information reproducing method comprising:
• reproducing at least a portion of said audio/video data based on said control information.

An information reproducing apparatus for reproducing information on an information recording medium which includes,

• a data area including said audio/video data;
• and
• a management area, separate from said data area, including said control information for managing said audio/video data, wherein,
• said audio/video data is recorded in object units, and when said audio/video data is edited and an object unit is or object units are re-encoded, an original one of the object units is or original ones of the object units are replaced with the re-encoded object unit or the re-encoded object units, and the recorded or re-encoded object unit or object units can be allocated or moved based on said edited audio/video data, and
• when an access frequency to said audio/video data exceeds a predetermined number of times upon sequentially playing back said audio/video data, recording locations of said audio/video data are changed so that the access frequency does not exceed the predetermined number of times,
• the predetermined number of times is represented by N;
• the system transmission rate of an information reproducing apparatus used to play back said audio/video data is represented by STR,
• the physical transmission rate of a pickup head of said information reproducing apparatus is represented by PTR,
• an average seek access time of the pickup head of said information reproducing apparatus is represented by SATa,
• an average jump access time of the pickup head of said information reproducing apparatus is represented by JATa,
• an average rotation wait time of the pickup head of said information reproducing apparatus is represented by MWTa, and
• N is less than or equal to 1/{[1+STR/(PTR−STR)]*(SATa+JATa+MWTa)},
• the information reproducing apparatus comprising:
• a first reproducer configured to reproduce at least a portion of said audio/video data based on said control information.