| 摘要 |
PROBLEM TO BE SOLVED: To reduce a recording area used for unnecessary recording as much as possible. SOLUTION: A music part section, a conversation part section, and a remaining part section in program data are specified, and converted to mutually different bit rates to be recorded. Then when the program data are recorded, data formats of the conversation part section and remaining part section where it is unknown whether information which is desirable at the point of time is included among the music part section, conversation part section, and remaining part section of the program data are converted so that data amounts are less than those before the data formats are converted and then the program data are recorded. Consequently, while data which are possibly desirable information are left, data to possibly be unnecessary later can be recorded using a recording area which is as small as possible, and then the recording area used for unnecessary recording can be made as small as possible. COPYRIGHT: (C)2008,JPO&INPIT
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