Lesson plan
Copy Control
Copy Control was the generic name of a copy prevention system, used from 2001 until 2006 on several digital audio disc releases by EMI Group and Sony BMG Music Entertainment in several regions (Europe, Canada, United States, and Australia). It should not be confused with the CopyControl computer software copy protection system introduced by Microcosm Ltd in 1989. Several types of protection existed. While basically intended as a means of copy-protecting compact discs, Copy Control discs cannot properly be referred to as CDs because the system introduces incompatible data, making the discs non-compliant with the Red Book standard for audio CDs. The system is intended to prevent digital audio extraction ("ripping") from the protected discs, and thus limit the file sharing of ripped music. The techniques used are: * Multisession (Blue Book) information is included which effectively hides the audio tracks from most CD-ROM drives; * Error-correction codes for the audio data are corrupted, which may introduce audible errors to ripped copies. * The data area of the disc usually includes DRM-restricted copies of the audio content, for which a player only exists on the dominant PC operating system, Microsoft Windows. In the Netherlands, the record labels Sony and Universal experimented with copy control until 2004. EMI kept using it until June 2006, when they dropped it.…
Article summary
Copy Control was the generic name of a copy prevention system, used from 2001 until 2006 on several digital audio disc releases by EMI Group and Sony BMG Music Entertainment in several regions (Europe, Canada, United States, and Australia). It should not be confused with the CopyControl computer software copy protection system introduced by Microcosm Ltd in 1989. Several types of protection existed. While basically intended as a means of copy-protecting compact discs, Copy Control discs cannot properly be referred to as CDs because the system introduces incompatible data, making the discs non-compliant with the Red Book standard for audio CDs. The system is intended to prevent digital audio extraction ("ripping") from the protected discs, and thus limit the file sharing of ripped music. The techniques used are: * Multisession (Blue Book) information is included which effectively hides the audio tracks from most CD-ROM drives; * Error-correction codes for the audio data are corrupted, which may introduce audible errors to ripped copies. * The data area of the disc usually includes DRM-restricted copies of the audio content, for which a player only exists on the dominant PC operating system, Microsoft Windows. In the Netherlands, the record labels Sony and Universal experimented with copy control until 2004. EMI kept using it until June 2006, when they dropped it.…
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.