MirrorLink

MirrorLink is a device interoperability standard that offers integration between a smartphone and a car's infotainment system. MirrorLink transforms smartphones into automotive application platforms where apps are hosted and run on the smartphone while drivers and passengers interact with them through the steering wheel controls, dashboard buttons and touch screens of their car's In-Vehicle Infotainment (IVI) system.

MirrorLink utilizes a set of well-established, non-proprietary technologies such as , USB, Wi-Fi, Bluetooth, (RTP, for audio) and Universal Plug and Play (UPnP). In addition, MirrorLink uses Virtual Network Computing (VNC) as the baseline protocol to display the user interface of the smartphone applications on the infotainment system screens and to communicate user input back to the mobile device.

MirrorLink started out as a research project. Researcher Jörg Brakensiek, from Nokia Research Center in Palo Alto, US, took results from the noBounds! project—invented by researcher Bernd Steinke from the Nokia Research Center in Bochum, Germany—and applied them to the automotive domain.

The initial approach applied by Bernd Steinke contained three specialised sub-protocols for optimal power efficiency: 2D, 3D and Media. Support for 2D graphics composition via X11 mirroring was only needed by the requirements of the chosen source device, a Nokia N800 mobile Linux device, and the desire to speed up demo availability to show mirroring use cases. OpenGL ES was used for fast 3D graphics and alpha based Porter-Duff compositing for shine-through 2D effects. To make this future relevant approach available on the limited N800 Mesa 3D was used for local playback. High Definition Media streaming was implemented via OpenMAX, and a timed sideband control to allow synchronous displayed streaming of the original video file without transcoding. The Initial implementations have remoted the GUI, Games and media content of an Nokia N800 and later an N810 mobile Linux device. This demonstration of, at that time, not expected capabilities of mobile devices, was widely reported.

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