Optical disc, information recording method, information reproducing method, and disc drive,申请号EP20070109205-传众专利搜索

Optical disc, information recording method, information reproducing method, and disc drive

申请公布号：EP1863025(A2)

申请号：EP20070109205

申请日期：2007.05.30

申请公布日期：2007.12.05

申请人：

KABUSHIKI KAISHA TOSHIBA

发明人：YOSHIDA, NOBUHISA;OOTERA, YASUAKI;UMEZAWA, KAZUYO;NAKAMURA, NAOMASA;TAKAZAWA, KOJI;ANDO, HIDEO

分类号：G11B7/24;G11B7/007;G11B7/246;G11B23/36

主分类号：G11B7/24

摘要：A write-once optical disc which uses a short-wavelength laser (wavelength = 600 nm or less) allows BCA information recording even using a long-wavelength laser (wavelength falling within a range from 600 nm to 800 nm). To this end, a groove is cut in advance on a BCA part on a molded substrate of the optical disc to store a dye. In this way, the sensitivity of the dye in the BCA increases, to allow a laser having a wavelength (a wavelength falling within the range from 600 nm to 800 nm) other than the wavelength (e.g., 405 nm) corresponding to information recording of the dye to record a barcode pattern on the BCA.