WiDi
Wireless Display (WiDi) is technology developed by Intel that enables users to stream music, movies, photos, videos and apps without wires from a compatible computer to a compatible HDTV or through the use of an adapter with other HDTVs or monitors. Intel WiDi supports HD 1080p video quality, 5.1 surround sound, and low latency for interacting with applications sent to the TV from a PC.

Using the Intel WiDi Widget, users can perform different functions simultaneously on their PC and TV such as checking email on the PC while streaming a movie to the TV from the same device.

WiDi was discontinued in 2015 in favour of Miracast, a standard developed by the Wi-Fi Alliance and natively supported by Windows 8.1 and later. On the latest Windows 10 by Microsoft, the built-in Wireless Display is also called Project, which can be used to mirror Win 10 to TV for those Miracast Supported devices.

Version history
2010 - WiDi 1.0 - Supports 720p
2011 - WiDi 2.0 - Supports 1080p
2012 - WiDi 3.0 - Supports 1080p @ 60 FPS
September 2012 - WiDi 3.5 - Supports Windows 8, touch functionality, 1080p output, 3D content, HDCP2, Blu-ray, and USB devices and Miracast.
2013 - WiDi 4.0
2014 - WiDi 4.1
2014 - WiDi 4.2 - 5 GHz Wi-Fi support (with compatible receiver)
2015 - WiDi 5.1 - Supports 4k - Ultra HD displays.
2015 - WiDi 6.0
October 2015 - The marketing and development of WiDi applications was discontinued by Intel, who said that this was because the Miracast standard was natively supported in Windows for wireless display.

Miracast

The Miracast standard is supported in Intel Wireless Display versions 3.5 through 6.0, when it was discontinued. After this development, Intel recommended that business users utilize Intel Unite as a platform for collaboration. Miracast was included in Android 4.2 smart phones and onwards and on Windows 8.1 and 10. It can stream on TVs, projectors, and media players.

See also
 AirPlay
 Digital Living Network Alliance (DLNA).
 Ultra-wideband
 Wireless HDMI:
 WiGig
 WirelessHD
 Wireless Home Digital Interface

 Wi-Fi Direct
ip based:
 Chromecast (proprietary media broadcast over ip: Google Cast for audio or audiovisual playback)
 AirPlay (proprietary ip based)
 Digital Living Network Alliance (DLNA) (ip based)
port / cable standards for mobile equipment:
 Mobile High-Definition Link - MHL
 SlimPort (Mobility DisplayPort), also known as MyDP

References

External links 

WiDi at Intel.com
The Main Wireless HDMI Transmission Protocols and Their Typical Products Comparison of different wireless HDMI transmission protocols at Portablehifi.com

Computer display standards
Wi-Fi
Wi-Fi Direct
Intel products
Wireless display technologies