Saturday, June 4, 2011

WHDI (wireless home digital interface)

WHDI (wireless home digital interface) set a wireless high-definition video connecting the new standards. It provides a high quality, without compression wireless connection. Its USES MIMO technology and OFDM modulation method can realize as high as 3Gbps transfer rates. Work in 5.875 GHz ~ GHz band 4.9 20MHz or 40MHz channel, that complies with the global 5GHz spectrum regulation, within range is 30 meters, can penetrate walls, and less than 1 millisecond delay.
WHDI support new equipment, consumers connect the A/V equipment and consumer content, can range covers the whole family, WHDI allows users to connect any of the family source to any location display. Use the television, in the sitting room WHDI can display the bedroom broadcast blu-ray player, hd DVD players, kitchen TV shows in family office PC content, and game entertainment can in the basement, without having to move projectors, play the game console from the children bedroom or the basement. This new standard, convenient WHDI video transmission by incompressible hd video player, independence, multiple indoor hd video connection to use a revolutionary video modem way to cover the entire family, support.
WHDI specifies the hd video transmission, and audio and control. Comprehensive WHDI control protocol would enable users to control from the family can concentrate all A/V equipment, transmission almost no delay, users will not meet the voice and video asynchronous problem, also can use WHDI connected network video game entertainment audio.
WHDI characteristics
No video transmission of compression
WHDI technology and other wireless technology, the most essential difference is that it can transmit full hd without compressed audio and video stream of. Current video wirelessly transmitted by mainly through two ways: one kind is the audio on launch by compressing stream wireless transmission, in the receiver uncompressed image way to WIFI and UWB technology represented. Another way that direct transmission through wireless video source output shadow streaming video to the receiver, output image, with WHDI represented. Currently only WHDI technology can realize industry.
Teleport without delay
Because WHDI technology provides enough wireless bandwidth, not through compressed way to transfer, dispense video in the compression and decompression process, so take longer to ensure transmit video frequency no delay.
Resolution up to 1080P
The WHDI technology support a video resolution 1920X1080P. Subsequent through software upgrades, can support 2K X 4K resolution to. The equivalent of 4 times 1080P.
Supports 7.1 channel
In addition to send video beyond, the whole hd WHDI technology will support 7.1 channel (PCM) audio transmission, sampling rate as high as 24bit, 192KHz.
The fax channel 100K
WHDI technology itself apart from being able to transmit audio and video outside, also provides the 100K it channel. It set the aim is to channel allows HDCP control protocol and receiver on launch between the reciprocally verified. At present domestic WHDI modules manufacturer through this channel the union company has realized the USB keyboard mouse it functions, namely UWTC (USB Wireless Transmission Control) technology, and mastery of the multi-point touch remote Control technology.
Support HDCP2.0 technology
WHDI technology for HDCP organization set separately HDCP2.0 technical standards. HDCP2.0 can allow users through WHDI technology to realize a much, much more HDCP interaction of the authentication. Namely HDCP2.0 technology allows a has video sources of content protection protocol in multiple display terminals shows at the same time. This HDMI1.2 standard in is totally impossible. 

No comments:

Post a Comment