Optical disk device

Abstract

An optical disk drive for optimizing laser power to be used at the time of recording operation. In a DVD-R drive and a DVD-RW drive, a controller performs OPC to set recording power and records RMD serving as recording management data in an RMA serving as a recording management area. The RMD are verified. When the RMD can be read, the number of PI errors in the RMD is detected. If the number of PI errors is equal to or less than an allowable value, data are recorded in a data area at that recording power. If the number of PI errors exceeds the allowable value, OPC is again performed, to thereby reset the recording power.

Description

technical field [0001] The present invention relates to an optical disc device, and more specifically, to a data-recordable optical disc device in which recording power is optimized. Background technique [0002] It is known that in drive devices such as CD-R / RW drives, DVD-R / RW drives, and Combos, there is a A technique for optimizing recording power. When recording data, test data is recorded in a test area (PCA area: power correction area) of an optical disc, and recording power is optimized based on the reproduced signal quality of the test data. This technology is generally called Optimum Power Control (OPC: Optimum Power Control), and data is recorded in the data area of ​​the optical disc with optimal power by utilizing the Optimum Power Control. [0003] Figure 6 An example of the flow of data recording processing in a DVD-RW drive is shown. First, DVD-RW is loaded on the drive device, and the controller in the device executes OPC (S101). Specifically, for exampl...

AI Technical Summary

Problems solved by technology

In addition, the trial-written data in the data area must be rewritten, so it is limited to CD-RW discs, etc., and there is a problem that it cannot be applied to discs that cannot be rewritten.

Images