Patent ID: 6590846
Filing Date: 2003-07-08
Classification: G11B,H04N

Abstract:
A recording method for a recordable optical disk having a main information area in which data information is recordable in a recording layer of a groove having a wobble such that said data information is readable using a light, a control data area being located at an inner periphery side with respect to said main information area, and a sub information area, wherein in said control data area, other information including first physical format information has been previously recorded at a predetermined position instead of key information used to decipher the data information, said sub information area being configured to store second physical format information with an information structure which differs from an information structure of said control data area, said recording method comprising:detecting whether an optical disk is a writable optical disk; and writing the second physical format information to said sub information area when said optical disk is detected to be a writable optical disk.