Secure Digital (SD) is a non-volatile storage area card format produced by the SDCARD Relationship (SDA) for use in lightweight devices.
The typical was created in August 1999 by joint work between SanDisk, Panasonic (Matsushita Electric) and Toshiba as a noticable difference over MultiMediaCards (MMC), and is just about the industry standard. The three companies produced SD-3C, LLC, an organization that licenses and enforces intellectual property privileges associated with SD storage area credit cards and SD coordinator and ancillary products.
The firms also created the SD Relationship (SDA), a non-profit company, in January 2000 to market and create SDCARD requirements. SDA today has about 1,000 member companies. The SDA uses several trademarked logos held and qualified by SD-3C to enforce conformity with its features and assure users of compatibility.
Check More at http://www.futureapp.biz/blog/