![]() SD was designed to compete with the Memory Stick, a DRM product Sony had released the year before. ![]() The card was derived from the MultiMediaCard (MMC) and provided digital rights management (DRM) based on the Secure Digital Music Initiative (SDMI) standard and a high memory density. In 1999, SanDisk, Panasonic (Matsushita), and Toshiba agreed to develop and market the Secure Digital (SD) memory card. History 1999–2005: Creation and introduction of smaller formats It uses several SD-3C-owned trademarked logos to enforce compliance with its specifications and denote compatibility. ![]() As of 2023, the SDA has approximately 1,000 member companies. In January 2000, the companies formed the SD Association (SDA), a non-profit organization to create and promote SD Card standards. The three companies formed SD-3C, LLC, a company that licenses and enforces intellectual property (IP) rights associated with SD memory cards and SD host-and-ancillary products. The standard was introduced in August 1999 by SanDisk, Panasonic (Matsushita) and Toshiba as an improvement on MultiMediaCards (MMCs). Secure Digital, officially abbreviated as SD, is a proprietary, non-volatile, flash memory card format the SD Association (SDA) developed for use in portable devices. Portable devices, such as digital cameras and mobile phones (including most smartphones)
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