Patent ID: 7151732
Filing Date: 2006-12-19
Classification: G11B

Abstract:
1. An optical disk unit for recording information on and reproducing information from an optical disk on which address information indicating a position of a part unrecorded with data is written, the optical disk unit comprising: a storage part temporarily storing data transferred from outside to be written to the optical disk so that predetermined processing is preformed on the data; a processing part performing the predetermined processing on the data; an encoder part modulating, by a predetermined method, and outputting the data processed in said processing part; a writing control part controlling writing of the data to the optical disk by controlling said processing part and said encoder part and controlling storing of the data in said storage part; and a writing command part detecting an occurrence of a state of suspension of supply of the data to said storage part and providing an operation command to said writing control part in accordance with a result of the detection, wherein said writing control part, in the case of suspending the writing of the data to the optical disk, causes said processing part and said encoder part to stop accessing said storage part by setting said processing part and said encoder part in a wait state after said processing part and said encoder part access said storage part, and causes the storing of the data in said storage part to be stopped, and wherein said writing control part performs abnormality detection on a variety of information read out from the optical disk at a time of writing the data, and suspends the writing of the data to the optical disk when said writing control part detects abnormality in the abnormality detection.