Optical disk data erasing apparatus and optical disk data...

Details Optical disk data erasing apparatus and optical disk data... Optical disk data erasing apparatus and optical disk data...

2006-07-18

2006-07-18

Miller, Brian E. (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053240, C369S053370

Reexamination Certificate

active

07079462

ABSTRACT:
In an optical disk data erasing apparatus, it is judged whether a loaded optical disk is a write-once optical disk or not, and when the optical disk is a write-once optical disk, disk recording information of the optical disk is obtained according to an instruction from a host computer, and overwriting of the optical disk is performed by irradiating the optical disk with a laser beam having a recording power equal to or higher than that at recording, thereby erasing data recorded on the optical disk. Therefore, the optical disk data erasing apparatus can completely erase the data recorded on the optical disk, easily and inexpensively, without having to use a special apparatus, and without generating substances detrimental to environment.

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