Patent attributes
When a write operation is to be performed for writing digital audio data (track), stored on a hard disk, to a CDR disk in an audio-digital-signal recording apparatus, control is performed, prior to execution of the write operation, such that the digital audio data stored on the hard disk can not be accessed by any other operation than the write operation, to thereby cause the other operation to regard the digital audio data as already erased from the storage section. After completion of the writing or copying of the digital audio data to the disk-shaped storage medium, the digital audio data are actually erased from the hard disk. Thus, even when power failure or shutdown occurs immediately after the copying of the digital audio data and before initiation of the audio data erasure from the hard disk, any operation, other than the write operation, can be prevented from accessing the digital audio data, so that the copyright on the digital audio data can be protected. As a result, the digital-audio-signal recording apparatus can prevent chain-like digital copying and thus can be properly used as consumer equipment.
