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Posted on October 23, 2008 by Shawn Paul | Posted under Hardware
Solid state SD memory card
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The data can be easily transferred using the SD memory cards because of their slim size and the compact design. SD cards have the basic, important and powerful features of bridge media. Music and video clips can be played by SD card compatible device with the help of “decoder software" even without the drive mechanism. In this way the product designers have more freedom to be creative and therefore, more compact equipment can be made. The other popular and smaller form of SD memory card is the miniSD card, its size is approximately 20 x 21.5 x 1.4 mm. The small size does not mean that the capacity will also be reduced. The SD cards have the recording capacity of 2GB, 4GB and 8GB. Work is being done to further enhance its capacity. The SD cards have high data storage capacity so they are capable to store the high quality video that requires large capacity. Demand has increased for high speed memory cards because of the increased digital contents and data volumes. SD memory card protects the data by the technology of copyright CPRM (Content Protection for Recordable Media). The CPRM protects the data from illegal copying and therefore, helps to distribution system of the commercial media and music as well. The CPRM technology was introduced and is licensed by the four companies Intel, Toshiba, IBM and Matsushita. This technology is enhanced in Secure Digital card by built in technology of key revocation. After the detection of external device, the control circuitry of the SD memory card allows the reading and writing of the data within its protection area. There is a system of check out that allows three copies from PC to SD card in accordance with specification of SDMI. All the products of SD audio comply with the Secure Digital Music Initiative (SDMI). The authentication among the devices enabled the access to SD card. When exchange of information and mutual authentication takes place, each time a random number generates. These are the basic powerful features of the copy right technology of the SD cards. For more detail and online order, please visit www.tape4backup.com About The Author: Shawn Paul (Marketing Manager) Tape4backup.com 34972 Newark Blvd, # 501, Newark CA 94560 Tel : 888-491-4949 Fax : 888-449-5050 Email: sales@tape4backup.com |
Tags: SD MEMORY CARD, SECURE DIGITAL, MINI SD, MINISD, MMC, EMTEC, MICROSD, MICRO SD, INTUIX, SANDISK











