METHOD FOR MANAGING COPY PROTECTION INFORMATION OF A HIGH-DENSITY OPTICAL DISK, THE HIGH-DENSITY OPTICAL DISK IN ACCORDANCE WITH THE COPY PROTECTION INFORMATION MANAGING METHOD, AND A COPY PROTECTION INFORMATION DETECTING DEVICE, SPECIFICALLY RELATED TO EFFECTIVELY PREVENTING RECORDED DATA FROM BEING ILLEGALLY REPRODUCED OR COPIED

摘要

PURPOSE: A method for managing CPI(Copy Protection Information) of a high-density optical disk, the high-density optical disk in accordance with the CPI managing method, and a CPI detecting device are provided to record CPI in a lead-in area while recording wobble pits within a data frame, and to record straight-type pits in a frame synchronization of an address unit, thereby maintaining a secrete for preventing the CPI from being easily detected by a general push-pull detection method. CONSTITUTION: When recording wobble pit-type CPI in a lead-in area of a high-density optical disk, wobble pits are recorded after a predetermined pit length within a data frame of an address unit. Straight-type pits are recorded in a frame synchronization of the address unit and the predetermined pit length. The high-density optical disk is a BD(Blu-ray Disk)-ROM. The CPI is recorded in phase wobbled pit type via a spread spectrum encoding process in a PIC(Permanent Information and Control data) area within the lead-in area.