What is the Miracast
To put it simply: The Miracast Screen protocol, which is used in an Android phone/tablet /Windows computer/TV/Android box and in some Software packages, is an Expression.
But Miracast does have an official pedigree, and the official explanation is:
Miracast is a standard for wireless connectivity from devices such as laptops, tablets or smartphones to monitors such as televisions, monitors or projectors, which were launched in 2012. It could roughly be described as “HDmiOverWi-Fi,” replacing the cable from the device to the monitor.
The Wi-Fi Alliance launched its Miracast certification program in late 2012. A Miracast-certified device can communicate with one another, regardless of the manufacturer. The adapter can be used to insert an HDMI or USB port and allows devices without built-in Miracast support to connect through Miracast.
The point-to-point Wi-Fidirect standard is adopted in Miracast. It allows sending up to 1080P hd video (H.264 codec) and 5.1 surround sound (AAC and AC3 are optional codecs and the mandatory codecs are linear pulse codecs – 16-bit 48kHz2 channels). The connection is created through WPS, so WPA2 is used for protection. IPv4 is used for the Internet layer. At the transport layer, TCP or UDP is used. At the application layer, the RTSP, RTP initiates and controls the flow for data transfer.
The following problems with Miracast exist
- Naming is not standardized
The Android phone maker’s name MiracastSource is not standardized. When users use it, they don’t know where to find it. Some are called wireless projection, some are called multi-screen interaction.
- Poor screen projection experience, mainly reflected in: long connection time, easy to automatically disconnect, delay, Mosaic, lack of clarity, etc.
At present, the compatibility of MiracastSINK is relatively poor, which is reflected in the failure of mobile phone connection/a long time of mobile phone connection, etc.
The stability of existing MiracastSINK is relatively poor, reflected in: after repeated use, the screen projection device no longer connects/breaks after a long time of connection, etc.
The present experience of MiracastSINK is yet to be optimized, as reflected in: audio and video can get stuck or Mosaic/image is unclear/image has a large delay.
Awind wireless presentation
AWIND has been developing wireless screen projection device and wireless screen projection protocol since 2003, replacing Miracast protocol with WIFIdisplay protocol and Android architecture with LINUX architecture, and supporting STA/AP/P2P mode of Android at the same time.
AWIND is one of the few International enterprises that insist on making LINUX architecture screen projection. Although LINUX architecture development is difficult, high screen projection stability, low delay, high clarity, quick response and security are favored by many enterprises and teaching users, and it also has its own stable users and stable market.