| 摘要 |
A digital data processing apparatus which receives digital data whose use is charged for through a data recording medium or a network and uses the received digital data by using use right data, wherein the apparatus has memory means in which use history information of the digital data has been stored, and an accumulation of uses of the digital data is monitored by use history information, and when the accumulation of the uses reaches a preset value, a transfer of the use history information is promoted.
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