Abstract: There is disclosed an optical disk recording/reproducing apparatus in which a recording operation is interrupted and resumed based on an amount of a signal stored in a buffer RAM for temporarily storing a recording signal. The operation is controlled by a host apparatus connected to an external peripheral apparatus via a data bus. Furthermore, when reset processing is performed by attachment/detachment of the optical disk recording/reproducing apparatus during the recording operation of the signal onto the disk, the host apparatus outputs a command signal for identifying the optical disk recording/reproducing apparatus.

Abstract: To provide an optical disk recording apparatus capable of signal recording onto a disk using a laser emitted from an optical pick-up. Signals temporarily stored in the buffer RAM (10) are read, and recorded onto a disk (1). When the amount of signal data in the buffer RAM (10) decreases below a predetermined amount as signals are read therefrom while the read signals are recorded onto the disk (1), the signal recording onto the disk (1) is suspended. When the amount of signal data in the buffer RAM (10) increases to the predetermined amount, the signal recording onto the disk (1) is resumed. The number of occurrences of signal recording suspension and resumption due to the shortage of signals in the buffer RAM (10) is counted.

Abstract: To provide a method for optimizing the optical output from an optical head when recording data onto an optical disk, each time a suspension of data recording onto the disk is determined, the optical head reads data recorded onto the disk before the suspension, and recording state of this data is judged. Based on the judged recording state, the optical output from the optical head to be emitted when resuming the data recording is controlled. A timing at which to suspend data recording can be desirably set, so that the recording state of the recorded data in the disk can be judged at desirable timing in data recording operation, so that the optical output from the optical head is controlled based on the judged recording state.

Abstract: Whether or not a recording device has a buffer underrun prevention function is determined. When such a function is present, recording data is sent to the recording device without being stored in a host buffer memory provided at the host device.