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Glossary
MagicGate
Copyright protection technology that consists of authentication and encryption technology. Authentication
ensures that protected content is transferred only between compliant devices and media, and that protected
content is recorded and transferred in an encrypted format to prevent unauthorized copying or playback.
Note
is terminology denoting the copyright protection system developed by Sony. It does not guarantee
conversion among other media.
OpenMG
Copyright protection technology that securely manages music content from the EMD/Audio CD on a
personal computer. Application software that is installed on the computer encrypts the digital music content
when recording on the hard drive. This allows you to enjoy music content on the computer, but prevents
unauthorized transmission of this content across a network (or elsewhere). This PC copyright protection
complies with “MagicGate”, and allows you to transfer digital music content from a PC’s hard drive to a
compliant device.
SonicStage
Copyright protection technology that securely manages music content from the EMD/Audio CD on a
personal computer. Application software that is installed on the computer encrypts the digital music content
when recording on the hard drive. This allows you to enjoy music content on the computer, but prevents
unauthorized transmission of this content across a network (or elsewhere). This PC copyright protection
complies with “MagicGate”, and allows you to transfer digital music content from a computer’s hard disk
to a compliant device.
ATRAC3
ATRAC3, which stands for Adaptive Transform Acoustic Coding3, is audio compression technology that
satisfies the demand for high sound quality and high compression rates.
The ATRAC3 compression rate is approximately 10 times higher than that of the Audio CD, resulting in an
increased data capacity for the media.
ATRAC3plus
ATRAC3plus, which stands for Adaptive Transform Acoustic Coding3plus, is audio compression
technology that compresses data higher than ATRAC3. The ATRAC3plus is new audio compression
technology that enables equal or higher quality sound comparing to ATRAC3.
Bit rate
Indicates the data amount per second. The rate is reflected in bps (bit per second).
64 kbps means 64000 bits of information per second. If the bit rate is large, that means a large amount of
information is used to play music. Comparing music of the same format (e,g., ATRAC3plus), 64 kbps data
offers better sound quality than 48 kbps data. However, audio files in formats such as MP3 have different
encoding methods, and thus sound quality cannot be determined by simply comparing the bit rate.