SD memory cards are a compact storage medium for personal data and multimedia files (audio, images, and video). SD cards feature large storage capacity and fast data transmission speeds in a small form factor for use in a wide range of products. Driven by the trend for slimmer and lighter consumer electronics, the market for SD cards is growing fast. Typical applications include digital cameras, mobile phones, multimedia players, printers, computer systems, card readers, home entertainment equipment, and in-vehicle infotainment systems.
Mobile devices are essential for our daily life, but for most of us, the internal memory storage on these devices is inadequate. Unfortunately, this problem is only getting worse, as activities like photo taking, video recording, and downloading, demand increasingly more memory. As a result, many users expand available memory on their mobile devices by inserting SD cards. According to Strategy Analytics, 75% of smart phones include a microSD slot, which points to the fact that SD cards are now an essential feature for many mobile devices. The SD industry trade group, SD Association (SDA), continuously improves SD card specifications and protocols in order to satisfy the ever increasing demand for memory.
Market status of SD card
No one doubts that SD Card is one of the most popular memory cards in the world. SD Card standard started in 2000, and has expanded its applications into digital still camera, mobile phone and PC peripherals. According to iSuppli 2011 market trend forecast, SD card, as a removable media to carry files, is not only for information, but also audio and videos with its big capacity and low prices.
SDXC (Secure Digital Extended Capacity) standard was first introduced in spring 2009 at CES by SDA (SD Association). Already the dominating memory card standard, SDXC is an upgrade revision of its successful predecessor SDHC (Secure Digital High Capacity) to accommodate rising demand of a faster and higher capacity memory module. While SDXC may have seen promising to become the next mainstream memory card standard, is it really as good and as fast as they say it is?