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SD Technology OverviewCapturing the World at the Speed of LifeSD memory cards are an innovative, always evolving bridge media powering the future of the digital world. SD memory cards deliver high-performance products that allow consumers to quickly capture video, photos, and sound in a reliable, easy-to-use format. SD technology is the de-facto industry standard for mobile phones, digital cameras, MP3 music players, personal computers, printers, car navigation systems, electronic books, and other consumer electronic devices. SD technology is used in some 400 products across dozens of product categories and in more than 8,000 models. SD memory cards are available in three capacity formats: SD, SDHC and SDXC. Each of these formats has a variety of speed classes, allowing you to find the card that meets your needs. The cards have the broad interoperability and compatibility needed to ensure that their applications will continue to expand far into the future. SDXC Memory Cards: The Next GenerationThe next-generation SDXC (Extended Capacity) memory card specification dramatically improves consumers’ digital lifestyles by increasing storage capacity from greater than 32 GB up to 2 TB and also increasing SD bus interface read/write speeds up to 104 MB per second with a road map to 300 MB per second. SDXC will allow your electronic devices – from laptops to cameras, camcorders, TVs, HDD recorders/players, PNDs and mobile phones – to store more content and to download content faster than ever before. SDHC Memory Cards
Copyright ProtectionReady for the Secured Digital ContentContent Protection for Recordable Media (CPRM), the content protection technology used for the SD card, is key to enabling a new distribution system for music and other commercial media. CPRM assures a high level of protection against illegal copying. The technology was developed by the 4C Entity, LLC (The digital contents copyright protection technology licensing organization of IBM, Intel, Panasonic, and Toshiba.) Having a proven record in DVD, this protection is enhanced in SD memory cards through the use of "key revocation" technology built into each card. The card's control circuitry allows data to be read and written (in its protection area) only when appropriate external devices are detected. A check-out (copying) from a PC to the SD memory card is restricted to three copies in compliance with the SDMI specification. All SD-Audio products comply with SDMI. The SD card copyright protection function has the following features:
SD Memory Card Family Index
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The capacity range of the SDHC memory card is from 4GB card up to 32GB. The new bus-interface specification, "UHS-
