Patent ID: 7652964

Claim:
An optical disk device to which is mounted an optical disk upon which are stored an ID of said optical disk, number of times information which specifies the number of times that calibration of laser power has been performed upon said optical disk, and recording management information which specifies the recording range of data upon said optical disk, comprising: a recording and reading means which performs recording of data upon, or reading of data from, said optical disk; and a storage means which, when recording of data upon said optical disk has been completed, stores said recording management information, said number of times information, and said ID read from said optical disk by said recording and reading means in mutual correspondence; and wherein said recording and reading means: comprises a decision means which, when said optical disk has been mounted, reads said number of times information and said ID from said optical disk, and decides whether a first situation holds in which said ID and said number of times information which have been read are not stored in said storage means, or a second situation holds in which said ID and said number of times information which have been read are stored in said storage means; and: in the case of said first situation, reads said recording management information from said optical disk, and performs recording of data upon said optical disk or reading of data therefrom, based upon said recording management information which has been read; and in the case of said second situation, reads said recording management information from said storage means, and performs recording of data upon said optical disk or reading of data therefrom, based upon said recording management information which has been read.