Optical recording medium having secrecy of recorded information and erase method therefor and information recording/reading system using the same

摘要

An optical recording medium which includes a PMA 13, a TOC area 15, program area 17, an area 19 that includes user area and lead-Out area. A portion of the PMA, which relates to the program area, is in a recorded state, and the TOC area is in an unrecorded state. Alternatively, the PMA may be in an unrecorded state. Further, a password may be recorded in a portion of an information area. An erase method and an information recording/reading system therefor are also provided.