Patent ID: 6580873
Filing Date: 2003-06-17
Classification: G11B,H04N

Abstract:
An information storage medium configured to have data recorded thereon and data reproduced therefrom by an information recording/reproducing apparatus, said data including audio/video data and control information, the information storage medium comprising:a control information area for recording said control information; and a file area for recording said audio/video data, wherein, said file area includes a first data size for recording the audio/video data, a second data size is defined by a plurality of first data sizes, part of the audio/video data having the second data size being recorded in data blocks used in error correction, and the audio/video data being recorded in units of sizes each corresponding to one or more of the second data size, said control information includes an audio/video file information table configured to manage information of the file area, said audio/video file information table includes audio/video file information configured to manage information of said audio/video data recorded in said file area and one or more pieces of audio/video object stream information configured to store stream information of said audio/video data, said audio/video file information includes one or more pieces of audio/video object information configured to store information of a video object unit of the audio/video data and audio/video object information search pointers for said one or more pieces of audio/video object information, said audio/video object information includes time map information configured to store information used for executing special playback and time search of said audio/video data, said time map information includes a video object unit entry configured to store size information of said video object unit, said size information represents the size of the video object unit in units of the first data size and is used to determine an address in said file area, 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 said information recording/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 recording/reproducing apparatus is represented by PTR, an average seek access time of the pickup head of said information recording/reproducing apparatus is represented by SATa, an average jump access time of the pickup head of said information recording/reproducing apparatus is represented by JATa, an average rotation wait time of the pickup head of said information recording/reproducing apparatus is represented by MWTa, and N is less than or equal to 1/{[1+STR/(PTRâˆ’STR)}*(SATa+JATa+MWTa)}.