Abstract: A recording apparatus recording data on an optical disk includes a management information checking unit that determines whether or not management information on the optical disk for managing the data recorded on the optical disk exists by checking for management information on the optical disk when the optical disk is inserted in the recording apparatus; an area usage checking unit that determines whether or not a usage history of an optical disk area for optimizing recording power exists by checking a use condition of the optical disk area for optimizing recording power; and an abnormality detection unit that determines whether or not an optical disk abnormality exists in accordance with the presence or absence of management information on the optical disk and the presence or absence of a usage history of the optical disk area for optimizing recording power.

Abstract: A recording apparatus recording data on an optical disk includes a management information checking unit that determines whether or not management information on the optical disk for managing the data recorded on the optical disk exists by checking for management information on the optical disk when the optical disk is inserted in the recording apparatus; an area usage checking unit that determines whether or not a usage history of an optical disk area for optimizing recording power exists by checking a use condition of the optical disk area for optimizing recording power; and an abnormality detection unit that determines whether or not an optical disk abnormality exists in accordance with the presence or absence of management information on the optical disk and the presence or absence of a usage history of the optical disk area for optimizing recording power.

Abstract: The present invention relates to an optical recording method for recording data on an optical disc by using a laser beam. When the optical disc is inserted into an optical recording device (step S1), a test writing area PCA (Power Calibration Area) that can be used for an OPC (Optimum Power Calibration) on the optical disc is searched and an optical pickup is allowed to stand by at that position (step S4). Then, when an input of a recording operation of data is received (step S6), an OPC operation is carried out at the stand-by position (step S7). After an optimum power is obtained, the optical pickup is moved to a data recording area on the optical disc (step S10) to record the data in the data recording area of the optical disc by the optical pickup (step S11).

Abstract: A recording apparatus includes: recording means having a drive part including rotational drive means for rotating an optical recording medium in order to record data onto the optical recording medium; data coding means for coding data; and recording control means for storing the coded data into storage means and controlling the recording means to record the data stored in the storage means onto the optical recording medium. The recording control means includes overall control means for controlling the recording control means overall and servo control means for servo-controlling the drive part of the recording means. In the recording-standby state standing by to store the coded data, the overall control means stops operation of the servo control means, and at the same time, servo-controls the rotational drive means.

Abstract: This invention relates to a recording medium, data transmission apparatus, data receiver, and optical disk unit, and particularly applies to a system which transmits video data and other data or records them on an optical disk in a predetermined block unit, and permits each frame to be easily and correctly located by low volumes of identification data. At least contiguous synchronization patterns or/and contiguous synchronization patterns with one synchronization pattern interleaved therebetween are assigned with unique combinations.