Patent ID: 6950381

Claim:
A disk recording/reproduction device comprising a disk as the recording medium, a record/reproduction section for recording and reproducing on the disk, and an error processing section for recovery from errors occurring during the recording or reproducing on said disk, wherein said disk recording/reproduction device has a first operation mode with a maximum allowable error processing time more than a first specified value in said error processing section and, a second operation mode with a maximum allowable error processing time less than a second specified value in said error processing section; said disk recording/reproduction device being connected to a host system by way of a host interface, wherein besides recording and reproducing on the disk according to recording or reproducing commands received by way of the host interface, said disk recording/reproduction device also switches between the first operation mode and the second operation mode according to a status change command received by way of the host interface; and said disk recording/reproduction device being capable of setting a large number of channels capable of simultaneous recording or reproducing by using status change commands.