-
公开(公告)号:US5105416A
公开(公告)日:1992-04-14
申请号:US323316
申请日:1989-03-14
Applicant: Hideki Segawa , Michihara Abe
Inventor: Hideki Segawa , Michihara Abe
CPC classification number: G11B7/126 , G11B19/02 , G11B20/1217 , G11B20/1883 , G11B27/3027 , G11B7/004 , G11B7/00745 , G11B2020/10888 , G11B2220/20 , G11B2220/2537
Abstract: An optical disc is divided into a plurality of sectors each of which includes an address section, a flag section and a data section. First sector management data are stored in the flag section, normally in the form of a flag pit. In one aspect of the invention, the first sector management data are recorded in the flag section at higher laser beam power than the power used for recording data in the data section. In another aspect of the invention, second sector management data are additionally stored in the data section in the form of a special pattern. In this case, the second sector management data are read out if no sector management data have been read from the flag section of the sector.
Abstract translation: 光盘被分成多个扇区,每个扇区包括地址部分,标志部分和数据部分。 第一扇区管理数据通常以标志坑的形式存储在标志部分中。 在本发明的一个方面,第一扇区管理数据以比用于在数据部分中记录数据的功率更高的激光束功率被记录在标志部分中。 在本发明的另一方面,第二扇区管理数据以特殊模式的形式另外存储在数据部分中。 在这种情况下,如果没有从扇区的标志部分读取扇区管理数据,则读出第二扇区管理数据。