摘要 |
<p>An optical disk comprising: a first substrate, a data zone formed on said first substrate, and a second substrate, wherein said data zone is formed between said first substrate and said second substrate. A spiral track formed on the data zone, and a barcode pattern is formed by a laser on the spiral track, and which is readable by a pick-up for reading data recorded on the data zone together with a method for reproduction of the data from such an optical disk.</p> |