Information processing method and information processing apparatus

An information processing method for reading out and reproducing data which is divisionally recorded on a plurality of recording areas on a recording medium, comprising:

• a control step of controlling a reading-out order of a plurality of partial data of the data, which are recorded on the plurality of recording areas, on the basis of a minimum recording unit specified in the recording medium,
• wherein the minimum recording unit is defined by a moving image minimum recording time Tv, audio minimum recording time Ta, moving image minimum recording size Lv, and audio minimum recording size La in an after-recording reproduction mode using a moving image file and audio file,
• the moving image minimum recording time Tv, audio minimum recording time Ta, moving image minimum recording size Lv, and audio minimum recording size La are respectively given by:
• Tv=(2×Tj+Dv/St+Da/St)/(1−Sv/St−Sa/St)
• Ta=(2×Tj+Da/St+Dv/St)/(1−Sv/St−Sa/St)
• Lv=Sv×Tv+Dv
• La=Sa×Ta+Da
• where Tj is a head seek time, St is a transfer rate upon reading out data from a disk, Sv is a moving image reproduction rate, Sa is an audio reproduction rate, Dv is a defective block size included in a moving image minimum recording unit, and Da is a defective block size included in an audio minimum recording unit.

An information processing method by reading out and reproducing a plurality of data which are divisionally recorded on a recording medium, comprising:

• a control step of controlling a reproduction order of the plurality of data on the basis of a minimum recording unit specified in the recording medium,
• wherein the control step comprises:
• a first step of reading out first data from a first recording area;
• a second step of seeking, under the condition that a discontinuous portion of the first data is reached before less than a predetermined multiple of the minimum recording unit of data is read out from the first recording area, to a second recording area after reading out data until the discontinuous portion is reached;
• a third step of reading out second data from the second recording area;
• and
• a fourth step of seeking, after the second data is read out, from the second recording area to a recording area where data next to the discontinuous portion of the first data is recorded,
• wherein when reading out moving image data and audio data as the plurality of data and executing after-recording reproduction, if a discontinuous portion of moving image data is reached before less than a predetermined multiple of the minimum recording unit of moving image data is read out, the method seeks to a recording area of audio data and reads out the audio data after reading out the moving image data without seeking to another recording area until the discontinuous portion is reached, and then, seeks to a recording area where moving image data next to the discontinuous portion is recorded.

An information processing apparatus for reading out and reproducing a plurality of data which are divisionally recorded on a recording medium, comprising:

• a control unit which controls a reproduction order of the plurality of data on the basis of a minimum recording unit specified in the recording medium,
• wherein the control unit:
• seeks, under the condition that a discontinuous portion of first data is reached before less than a predetermined multiple of the minimum recording unit of data is read out from a first recording area, to a second recording area after reading out data until the discontinuous portion is reached;
• reads out second data from the second recording area;
• and
• seeks, after the second data is read out, from the second recording area to a recording area where data next to the discontinuous portion of the first data is recorded,
• wherein when reading out moving image data and audio data as the plurality of data and executing after-recording reproduction, if a discontinuous portion of moving image data is reached before less than a predetermined multiple of the minimum recording unit of moving image data is read out, the control unit seeks to a recording area of audio data and reads out the audio data after reading out the moving image data without seeking to another recording area until the discontinuous portion is reached, and then, seeks to a recording area where moving image data next to the discontinuous portion is recorded.