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  2. Compact Disc and DVD copy protection - Wikipedia

    en.wikipedia.org/wiki/Compact_Disc_and_DVD_copy...

    CD/DVD copy protection is a blanket term for various methods of copy protection for CDs and DVDs. Such methods include DRM, CD-checks, Dummy Files, illegal tables of contents, over-sizing or over-burning the CD, physical errors and bad sectors. Many protection schemes rely on breaking compliance with CD and DVD standards, leading to playback ...

  3. List of Compact Disc and DVD copy protection schemes

    en.wikipedia.org/wiki/List_of_Compact_Disc_and...

    See CD-Cops in previous section. DVD region code Restricts region where media can be played by matching region number with configuration flag in DVD players. LaserLock Includes hidden directory on the CD containing corrupted data which will cause errors while being copied. SafeDisc (version 4) See SafeDisc (versions 1-5) in previous section ...

  4. Copy Control - Wikipedia

    en.wikipedia.org/wiki/Copy_Control

    The player can ignore the anti-copy program to read the audio tracks. The player allow users to play the tracks, rip the audio tracks as DRM-enabled WMA files and burn CD for 3 times (The player will rip the CD as 320 kbit/s WMA files, then burn the audio on a CD-R, notice that the volume is lower and the quality is worse on the burned CD).

  5. Copy protection - Wikipedia

    en.wikipedia.org/wiki/Copy_protection

    Copy protection for computer software, especially for games, has been a long cat-and-mouse struggle between publishers and crackers.These were (and are) programmers who defeated copy protection on software as a hobby, add their alias to the title screen, and then distribute the "cracked" product to the network of warez BBSes or Internet sites that specialized in distributing unauthorized ...

  6. Extended Copy Protection - Wikipedia

    en.wikipedia.org/wiki/Extended_Copy_Protection

    Attempting to remove the software by deleting the associated files manually will render the CD drive inoperable due to registry settings that the program has altered. However, it was soon discovered that the software could be easily defeated by merely using a permanent marker to draw a dark border along the edge of the disk.

  7. AACS encryption key controversy - Wikipedia

    en.wikipedia.org/wiki/AACS_encryption_key...

    Commercial HD DVDs and Blu-ray discs integrate copy protection technology specified by the AACS LA. There are several interlocking encryption mechanisms, such that cracking one part of the system does not necessarily crack other parts. Therefore, the "09 F9" key is only one of many parts that are needed to play a disc on an unlicensed player.

  8. Electronic skip protection - Wikipedia

    en.wikipedia.org/wiki/Electronic_Skip_Protection

    Players from 1997 onward have more power-efficient skip protection. Portable players, more so portable CD players but also some portable DVD players, that invariably include an ASP feature (Anti-Skip-protection), struggle with CD-R/RW, DVD-R/RW and DVD+R/RW discs – due to the ASP feature being enabled.

  9. key2Audio - Wikipedia

    en.wikipedia.org/wiki/Key2Audio

    It appears that key2Audio protected disc TOC contains three sessions written on the disc [citation needed]. Two of them contain small data tracks, and one contains the audio tracks. The regular CD players pick the audio tracks outright, while the computer CD and DVD players get confused by the corrupted TOC information.