| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily and properly protect a copyright about musical composition data. <P>SOLUTION: An electronic musical instrument A reproduces musical composition data and realizes an automatic performance. When a musical composition data which is stored in an external memory device 36 and a musical composition data which is taken in via an interface circuit 51 are stored in an internal storage 35, in the case the musical composition data with a copyright is to be protected, the file name is changed automatically. When the musical composition data in an ROM 35 and an internal storage device 35 are copied onto an external memory device 36 or are output to the outside via the interface circuit 51, in the case the musical composition data with a copyright is to be protected, the copy and the output to the outside are prohibited. When an external instrument 52 requires transmission of the musical composition data stored in the internal storage 35, etc., in the case the musical composition data with a copyright is to be protected, a display of a file name of the musical composition data in the external instrument 52 is prohibited. <P>COPYRIGHT: (C)2003,JPO |
