Have you ever thought of moving toward a brighter, easier, smoother mobile way? The Bluetooth SIG has specified a standard mechanism for streaming high-quality mono or stereo audio from a Bluetooth master such as a smartphone to a slave device like an IVI system. The Advanced Audio Distribution Profile (A2DP) encodes 2-channel audio in a Bluetooth-friendly format, which is sent wirelessly and decoded at the Bluetooth receiver. The
SBC audio codec is a mandatory component of the A2DP profile, but other industry standards and proprietary codecs can also be accommodated. Today, several proprietary radios enable keyless entry and proximity sensor capabilities to unlock car doors or start the ignition. But because these links are not based on standards, each accessory must be compatible with the specific proprietary technology or it will not work. Wireless SoCs that include Bluetooth Low Energy (LE) capabilities, however, enable interoperability with all in-vehicle wireless systems, allowing consumers to use any of their mobile accessories to open car doors or start the ignition. The dashboard so they can answer calls and check text messages.
refer to:
http://embedded-computing.com/articles/wireless-accelerate-next-wave-in-vehicle-innovation/
