| 摘要 |
<P>PROBLEM TO BE SOLVED: To simply determine a blank disk conforming to the DVD Download standard. <P>SOLUTION: An optical disk apparatus includes: a first identifying means 4 which identifies disc information written in a lead-in zone of an optical disc 1; a tracking control means 4 for instructing tracking-on in a data zone, and outputting a tracking error signal when a tracking error is determined; a second identifying means 4 which focuses on a predetermined area in the data zone based on the tracking error output from the tracking control means and identifies presence of the tracking error signal; and a discriminating means 5 which discriminates that the optical disc is a blank disc that conforms to the DVD Download standards, based on the result of the first identifying means discriminating the disk information as a DVD-ROM and the result of the second identifying means detecting no tracking error signal. <P>COPYRIGHT: (C)2009,JPO&INPIT |
