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The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. It uses the Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc.
The following compact discs, sold by Sony BMG, were shipped with the computer software known as Extended Copy Protection (XCP). [1] As a result, any Microsoft Windows computer that has been used to play these CDs is likely to have had XCP installed. This can cause a number of serious security problems.
Usually the disc will appear like new and most importantly the data can once again be read by the laser. Some game shops, pawnbrokers and supermarkets provide a disc repair service. However, since this is an ablative process in which a layer of the substrate is removed, it is only safe to do a few times before risking the loss of the whole disc.
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.
This list includes both CD, DVD and Blu-ray recordable and rewritable media manufacturers (like Ritek), and disc replicators (companies that replicate discs with pre-recorded content, like Sony DADC).
However, the LP12's sound quality has been improved through retrofittable upgrade kits. The successive upgrades consist mostly of refinements in materials used and improved manufacturing tolerances. In 2011, some thirty years after the birth of the compact disc, sales of the LP12 and accessories still accounted for 10 percent of the company's ...
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Compact disc bronzing, or CD bronzing, is a specific, uncommon variant of disc rot, a type of corrosion that affects the reflective layer of compact discs and renders them unreadable over time. The phenomenon was first reported by John McKelvey in the September/October 1994 issue of American Record Guide .
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