BigPatents India

A method for managing a defective area of a write-once optical recording medium, and an optical recording medium using the same, is provided. In an optical disc device for recording/reproducing data using an optical disc such as a BD WO type disc, the method permits the normal reading and reproducing of recording data written on a defective area of the disc, through a replacement write operation for the recording data of the defective area. When a defect is detected within a predetermined recording sector of the optical disc during the recording process, the recording data is written on a spare area corresponding to the defective area and the thus written data is managed. (FIG. - 1)