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They assist the CD player in tracking the current location on the disc, and to provide the timing information for the time display on the CD player. The rest are not used in the Red Book specification. Channel P is a simple "pause music" flag, which can be used for low-cost search systems. Many players ignore it in favor of the Q Channel. It ...
CD-Cops Requires the user to enter CD-code (or reads embedded CD-code) that describes geometry of CD to correctly locate data on the disc. SafeDisc (versions 1–5) Adds unique digital signature at the time of manufacturing which is designed to be difficult to copy or transfer so that software is able to detect copied media. SafeCast
For example, audio tracks on such media cannot be easily added to a personal music collection on a computer's hard disk or a portable (non-CD) music player. Also, many ordinary CD audio players (e.g. in car radios) had problems playing copy-protected media, mostly because they used hardware and firmware components also used in CD-ROM drives ...
The NV-301 was the basic model with two speakers and a line input (marked for MiniDisc and DVD players) while the NV-701 was a 5.1 Dolby surround sound model with A/V inputs. Both featured a three-disc carousel, cassette player with Dolby B noise reduction, natural display, intelligent features and the ability to save up to 40 radio stations ...
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Portable CD players are powered by batteries and they have a 1/8" headphone jack into which the user plugs a pair of headphones. The first portable CD player released was the D-50 by Sony. [58] The D-50 was made available on the market in 1984, [59] and adopted for Sony's entire portable CD player line.
A CD drive can have extraction errors when the data on the disc is not readable due to scratches or smudges. The drive can compensate by supplying a "best guess" of what the missing data was, then supplying the missing data.
The PhatBox is a digital music player that can interface with many different automobile head units. It can play unprotected WMA , MP3 , Ogg Vorbis , FLAC , and AAC (with optional AAC plugin). The PhatBox emulates a CD changer so it is fully controlled through the existing disc and track buttons on the listener's head unit .