Verfahren zur Aufzeichnung von Indentifikationsinformationen, Vorrichtung dafür und Informationsaufzeichnungsmedium

摘要

Because conditions for recording identification data in the BCA (burst code area) of a medium vary in accordance with the structure of different media, such as a single-layer or a multiple-layer structure, stable data recording has been a difficult task. To solve this problem, the laser beam for recording identification data on the reflecting layer (11d) of a single-layer optical disk or a double-layer optical disk (6) is incident on the opposite side of a substrate (1) upon which user data is recorded. From this structure, even in a double-layer optical disk (6), the recording is not affected by the recording layer of a second layer (12b) and the like. Therefore, in the double-layer optical disk (6), identification data of the medium can be recorded under the same conditions as the single-layer optical disk (5).