Text 12870, 92 rader
Skriven 2006-09-06 22:11:20 av Rich Gauszka (1:379/45)
  Kommentar till text 12865 av /m (1:379/45)
Ärende: Re: wireless HDMI interface coming soon via ultrawideband?
==================================================================
From: "Rich Gauszka" <gauszka@hotmail.com>

The computer needn't be running Windows <g>.  I was thinking of something small
like a Mac-mini attached wirelessly to a terabyte of so storage array (
actually what I have now ).   I'd just rather have a PC part of a HD
wireless solution to the cable mess I have in the back of my TV.


"/m" <mike@barkto.com> wrote in message
news:s1vuf2df4c28a02k2qnsh9d0htq4sshpv7@4ax.com...
>
> Why introduce PCs into the mix?  Windows only complicates matters and
> reduces the reliability of the overall system.
>
>  /m
>
> On Wed, 6 Sep 2006 21:36:50 -0400, "Rich Gauszka" <gauszka@hotmail.com>
> wrote:
>
>>Being able to handle 3 or more HD streams at 30 feet sound good.
>>Unfortunately I don't see any mention of the system being incorporated in
>>PCs
>>
>>http://www.extremetech.com/article2/0,1558,2011975,00.asp?kc=ETRSS02129TX1K00
00532
>>
>>On Tuesday, Tzero Technologies and Analog Devices announced that they have
>>created a wireless HDMI interface for HDTVs, next-gen DVD players, and
>>set-top boxes.
>>The companies' first wireless HDMI setup is a standards-based system,
>>predicated on the standards set forth by Panasonic, Philips, Samsung,
>>Sharp,
>>and Sony in July of 2003. Other wireless HDMI technologies introduced to
>>date have been proprietary, both Tzero and Analog Devices alleged.
>>
>>Wireless HDMI (high-definition multimedia interface) enables wireless
>>video
>>and audio connections between all types of home entertainment products
>>such
>>as HDTVs, DVD players, set-top boxes, and game systems. It allows HDMI
>>content to stream to several devices without a tangle of wires. The
>>backbone
>>for the technology is ultrawideband, also used as a future replacement for
>>wired USB.
>>
>>The standard calls for link reliability of at least 95 percent, packet
>>error
>>rate of less than 1 in one hundred million, interference resistances for
>>microwaves and cordless phones, and the ability to process three or more
>>HD
>>streams at 10 meters.
>>
>>"The primary thing that is the most challenging is linked with
>>reliability,"
>>said Dan Karr, vice president of marketing for Tzero. "It needs to be good
>>under all conditions. Wi-Fi serves this market very well, but in a video
>>environment you can see that would be very problematic."
>>
>>The wireless HDMI system consists of a transmitter and receiver. The
>>transmitter is a black box about the size of a laptop. Karr says that it
>>is
>>"bigger than necessary, and that's because it's new, but it will get
>>smaller."
>>
>>The transmitter integrates the Tzero TZ7000 chipset and Analog Devices'
>>JPEG2000 compression integrated circuits. The Analog Device compresses
>>data
>>with JPEG2000 video code, which is then packetized and encrypted, and
>>transmitted via the Tzero MAC and PHY chip. The chip transmits over the
>>air
>>to the receiver where the audio/video data with HDMI is decompressed and
>>presented to the display device via the HDMI port.
>>
>>JPEG 2000 is a relatively new image compression standard that was approved
>>by the JPEG committee. It can operate at higher compression ratios without
>>the characteristic blocky and blurry effects of the original JPEG
>>standard.
>>
>>"We pass the video through the JPEG2000 and then pass the video and audio
>>through the Tzero chip," said Bill Bucklen, director for the Advanced TV
>>Segment with Analog Devices. "You can't compress a content-protected
>>signal
>>so we've built a repeater function and because we encrypt the link, it's
>>like we've taken a repeater and put them on the other side of the room."
>>
>>
>>
>>
>>

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