Copy Control: differenze tra le versioni

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The Copy Control protections were devised in response to the [[file sharing]] and casual CD copying that has become commonplace in recent years, allegedly causing the music industry significant losses, or "ungained" revenues. Neither issue was particularly relevant when the CD standard was introduced in the early [[1980s]], and thus, unlike the more recent [[DVD]]s, the CD standard specifies no inherent form of copy protection or other [[digital rights management]]. Copy Control is one of a number of attempts to apply copy protection on top of the CD standard, but since it is merely a modification of the already unrestricted standard which must still yield usable results in most CD players, the efficiency of the system varies significantly.
 
[[ImageImmagine:CDDAlogo.svg|thumb|100px|The CDDA logo, absent from Copy Control releases]]
As the Copy Control discs do not conform to the requirements of the [[Red Book (audio CD standard)|CD standard]], they are not labeled with the CDDA logo, which is trademarked by [[Philips]]. A Copy Control "CD" which would not play in a car CD player was deemed "defective" in a [[France|French]] [[2003]] lawsuit, and every recent Copy Control released disc carry visible Copy Control notices stating merely compatibility with CDs and the possibility of playback problems "on some equipment, for example car CD players." Nevertheless, the discs are frequently referred to as CDs or "copy-protected CDs" in music stores and in colloquial language.