Return to Terms GPS GPS, which stands for Global Positioning System, is a whole-earth navigation system consisting of 24 GPS satellites that are in orbit 11,000 nautical miles around the earth. Since flash memory does not need battery backup, it is used in a wide variety of consumer electronics.
Return to Terms Flash Memory A memory technology that allows data to be written and rewritten and is not erased when the power is shut off. A decoder is a device that decodes encoded data. Basically, an encoder only compresses and encodes data.
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Return to Terms Encoder An encoder is a device, circuit or software routine that compresses digital audio, video or other data to reduce volume, and sometimes encodes that data to prevent illegal duplication and use. Return to Terms EMD EMD stands for Electronic Media Distribution, and it refers to the service of distributing digital contents through a communication network such as Internet or a mobile phone system. SD memory card is the de facto standard among flash memory cards. A good example of a de facto standard is DVD for home video. Return to Terms De facto Standard A de facto standard is a general standard resulting from mass marketĪdoption. This is a content protection and certification/authentication standard jointly developed by 4C Entity LLC. This is a technology that supports the security system of the SD memory card. Return to Terms CPRM Content Protection for Recordable Media.
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This system prevents data from being duplicated on a different PC other than the one from which it was checked out. Checking-in means returning the music data and the “key” from the SD memory card to the PC. Return to Terms Check-in, Check-out These are the terms used in SDMI copyright protection system.Checking-out means writing data from the PC to an SD memory card with a “key”. Return to Terms CD Ripping This refers to the copying of audio data from a music CD to a PC or a memory card. The sound quality is better than an MP3 player. It compresses data to about one-tenth of its original size while maintaining CD-like sound quality when recording in the highest-quality mode (128kbps). AAC AAC stands for Advanced Audio Coding, which is the high-quality digital audio compression technology used in SD-Audio and satellite-based digital broadcasting in Japan.