HD Wireless Transmission detailed

In recent years, a variety of wireless communications for consumer electronics products, communication technology in the promotion of consumer demand, has been rapid development: from wireless keyboard, wireless mouse, to wireless LAN, wireless voice, and then in the laboratory phase of wireless power transmission technology. Each kind of wireless technology's appearance has brought the great convenience to the consumer's work, the life, also has promoted the consumer electronic product own evolution and the transformation. However, compared to WiFi, Bluetooth wireless technology, many consumers of wireless high-definition audio and video transmission technology may be relatively unfamiliar.

Therefore, wireless high-definition transmission is the AV terminal Equipment interface of the new blue Sea, has the prospect of a broad market can be expected. Industry oligarchs have not yet appeared, nor have the absolute advantage of the technical solutions. Market and technology are in the crowded of the development of perfect period, it is in such a prospect and the current situation stimulated, many manufacturers began to pour into this field, want to show their fists.

Currently, wireless HD transmission has several mature technologies, namely, low latency WHDI technology, high bandwidth wirelesshd technology, Intel Widi Technology, Alliance numerous WIGIG technology, and reluctantly dine DLNA technology.

Whdi's full name is "Wireless home Digital Interface", the Wireless family digital interface. The technology is based on Whdi autonomous technical standards, working in the 5GHz band, can reach 30 meters within the range of the signal transmission through the wall. Its bandwidth is 3Gbps, which can realize lossless and uncompressed transmission of HD signal.

The biggest feature of the WHDI standard is that the delay is less than 1ms and the HDMI interface is fully compatible. Low latency ensures a good audio-visual synchronization of the user's entertainment experience and no deferred operating experience. At the same time can reach a longer transmission distance, and have a certain ability to wear walls.

Whdi technology can now achieve 1920x1080 lossless video transmission, as well as 7.1-channel PCM high-definition audio transmission, but also provides a 100k return channel for HDCP Control Protocol communication. Future Whdi Technologies will also be upgraded to support 4K2K resolution.

WHDI members of the association include LG, Samsung, Sony, Sharp, Motorola and other manufacturers. It can be said that Whdi is currently favored by the industry, one of wireless high-definition transmission technology.

WirelessHD as its name suggests is "Wireless HD", but also by the industry generally optimistic about one of the technologies. WIRELESSHD technology is based on the 802.15.3C standard, using 60GHz high-frequency frequency band, theoretical bandwidth can reach 28Gbps, sufficient to deal with lossless transmission of Full HD data needs.

The initiator of WirelessHD Alliance mainly includes: Sony, Panasonic, LG, NEC, Samsung, Toshiba, etc. Due to the use of the 60GHz band, so the technology also has a limited transmission distance, can not wear the wall problem.

Widi, also known as the "Intel Wirelessdisplay", is a wireless high-definition transmission technology developed by the renowned chipmaker Intel company to WiFi standards and needs to be used with Intel-specific processors and specific operating systems.