Miracast

Miracast is a peer- to-peer wireless screencast standard, which was defined by the Wi- Fi Alliance. He is regarded as an open standard over Apple's AirPlay, Samsung Screen Mirroring and Intel's Wireless Display ( WiDi ), although the specifications of the standards developers will be provided only after the payment of a high amount of money available. The standard allows, for example, the screen contents of a smartphone on a TV Manufacturer A Manufacturer B of play. Other options are to transfer a laptop screen for presentations in real time on a projector. But even application scenarios such as streaming of TV programs from a TV receiver on a tablet computer would be conceivable. Here Miracast requires no direct connection to a wireless network because the connection of several devices to be realized by the WiFi Direct standard.

The Android operating system supported since version 4.2 " Jelly Bean" the Miracast standard. This is the Google Nexus 4, which comes with Android 4.2, the first Android smartphone with Miracast support. This is similar in the embedded operating system such as AirPlay in Apple's iOS. Microsoft Windows 8.1 supports Miracast natively.

Overview

Miracast allows mobile devices, videos up to 1080p (Full HD) with 5.1 surround sound (AAC and AC3 codecs are optional, but required the support of LPCM 16- bit is at 48 kHz with 2 channels ) compatible to a certain to send the display unit.

Devices

Intel's WiDi drivers support since version 3.5 ( October 2012 ) in addition to sending Miracast receiver. In addition to Intel, the manufacturer Broadcom, Marvell, MediaTek, Ralink and Realtek want to integrate the standard into their products. The first devices available for the consumer include the Google Nexus 4, LG Optimus G, Samsung's Galaxy S III, Sony Xperia L, T, V, Z, ZL & SP, BlackBerrys from OS 10.2.1 and LG Smart TV devices in 2013 ( LA6208 - LA8609, LN4607, LN5708, LN5758 and LN5778 ) Samsung echo -P -Series TVs (models ES7090 and ES8090 ), Philips televisions of 2013 ( Smart TVs 4508-8008 ) and Sony TVs the model W6, W8, W9 and X9, this function.

Nvidia has announced that Miracast to be supported by the widespread Tegra 3 platform. In addition, other major chip manufacturers such as Texas Instruments, Qualcomm and Marvell have announced plans to integrate a Miracast support in their products.

To start with Miracast between two devices, an image transfer, both devices must dominate the Miracast standard. If the playback device does not support this standard, a separate Miracast receiver can be used, which is simply plugged into the HDMI or USB port.

Disadvantages

So far Miracast allows you to stream audio only in conjunction with video. A pure audio streaming of music has not been provided.