Patent ID: 6522833
Filing Date: 2003-02-18
Classification: G11B,H04N

Abstract:
An information medium arranged for recording or playback of a plurality of pieces of audio or video information at discrete positions by a recording or playback apparatus, comprising:a data area configured for recording at least one video object, each video object comprises at least one video object unit; and a management area, separate from said data area, for managing the at least one video object recorded in said data area, wherein said management area includes a real time recording video manager, wherein said real time recording video manager contains a movie AV file information table comprising movie AV file information, wherein said movie AV file information contains one or more pieces of video object information, and said video object information includes prescribed information indicating whether an audio gap exists in a specific video object unit, said audio gap being a portion at which audio reproduction is discontinued for video playback of that portion, wherein said apparatus is configured to detect an audio gap based on the prescribed information, the plurality of pieces of audio or video information are recorded to decrease an access frequency to the audio or video information to be not more than N, N is a predetermined number of times upon sequentially playing back the plurality of pieces of audio or video information and is less than or equal to 1/{[1+STR/(PTRâˆ’STR)]*(SATa+JATa+MWTa)}, STR is a system transmission rate of a pickup head of a disc drive reading said information storage medium, PTR is a physical transmission rate of the pickup head of the disc drive reading said information storage medium, SATa is an average seek access time of the pickup head of the disc drive reading said information storage medium, JATa is an average jump access time of the pickup head of the disc drive reading said information storage medium, and MWTa is an average rotation wait time of the disc drive.