There's No Such Thing as 'Wireless HDMI'
An anonymous reader writes "CE Pro magazine interviewed Steve Venuti and Les Chard of HDMI Licensing, LLC to get a preview of all things HDMI at CES. The duo addressed some of the more controversial issues surrounding HDMI, including 'Wireless HDMI' (There's no such thing); Consumer Electronics Control (There will be interoperability); competitor DisplayPort (No traction in CE); and the complications of HDMI ('It is not an HDMI problem. It's a digital issue.')"
Got clippers?
Parent links to a trojan.
Yup, that's why we have analog..
'Number-memorizing Chinese people.'-Anon
Somewhere out there, Wireless HDMI says there is no such thing as YOU!
:(
Wait a second, I am still thinking, therefore I still am. Or is that just what the HDMI wants me to think? If I'm still thinking, that is. Wait a second, I am still thinking, therefore...
Blatant lies like It is not an HDMI problem. It's a digital issue make me want to avoid HDMI like the plague. I'd like to replace my 22 year-old TV and rubbish VHS VCR with a digital system, but I've been putting it off for three years now because I can't bring myself to expend the time and headaches involved in figuring out a system that works.
Are they gonna fix the issue of a limp friction-fit connector at the back of enormous TVs trying to hold back the weight of a thick cable? Who thought that one up? It's hideous.
Come from two factors of the digital domain ...
... That said, I don't see the compelling need for 1900x1400 [or whatever it is] HD images for HOME use. Hate to break it to ya, but "House" is as much a goof in 720x480 as he is in HD.
1. Everyone has their own standard.
2. DRM used to stop people (*) from viewing/listening to content.
Sadly I can't get why people are (*) surprised when this includes legitimate users.
Why would it be so hard to pipe some form of RGB/YUV or PCM data over a serial bus is beyond me
Would it be too much trouble for the submitter to explain what the acronym HDMI stands for, or at least to link to the WP article? Even after reading the WP article, I don't really know much about it.
Since it's a device for imposing DRM, there's presumably some mechanism for forcing the user to buy and use it. What is the mechanism? What types of equipment require it? The closest the WP article comes to discussing it seems to be this: "Both introduced in 2006, Blu-ray Disc and HD DVD offer new high-fidelity audio features that require HDMI for best results." Well, I'm still in the dark. What does "best results" mean? What are your results like if you don't use it?
Another thing I don't understand is how they think this kind of hardware-based DRM can work. All it takes is one hardware hacker to figure out how to tap in to some unencrypted signals, e.g., by connecting onto circuit boards. Once there's a single device that can be hacked by a publicly known procedure, every DRM'd movie out there can be transcoded into a non-DRM'd format.
One interesting sentence from the WP article: "PCs with hardware HDMI output may require software support from Operating Systems such as Windows Vista." So does this mean that you can't use the technology on a Mac, for example? I'm also curious whether any manufacturers are actually making mobos or video cards with hdmi connectors on them.
And how does this fit in with the apparently overwhelming recent trend away from DRM in music? Is it really believable that movies will go the other way?
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Amazing how big CES has gotten in the last 7 years. Now it's the center of the universe. Don't forget to mention DVR for OCAP.
Very obviously! If there were no DRM in HDMI, there would be no problem!!! It just pisses me off because essentially they are saying: "If we opened it up we would have no way to lock in consumers and guarantee ourselves a profit in a non-competitive field. So we are just going to screw the consumers instead."
Industrialists say smog isn't a pollution problem, it's an air problem.
When I was a kid, we only had one Darth.
Since when ./ started posting news about things that does not exist or newer should have existed?
I mean "wireless" routers have power cords and cat 5 plugs. And wires run to radio transmitters and usb receivers run to "wireless" keyboards and mice.
And don't get me started with all those wires and traces on circuit boards and such.
The whole wireless thing is a fraud, if you ask me.
This is the important part, IMHO. They intend to wait until people have "upgraded" to HDMI before they spring the DRM trap on them. Then again, I'm sure that the pirate copies won't contain any image constraint tokens.
Just what the hell kind of business are they running when "thieves" treat their customers better?
What he actually said was nothing more than a bitching about a technicality in terminology.
... We asked them to start calling it wireless for HDMI."
"Wireless HDMI"
"There is no such thing," Shard says, noting that the moniker is "misleading" because it suggests the technology is standardized through the HDMI camp. "Basically it means that there's HDMI on one end and a wireless link on the other.
HDMI bandwidth is 10.2Gbps synchronous (ie. not packet switched). 10Gbps (theoretical max) wired ethernet therefore won't even do it, not with a single cable. Is there any wireless protocol that could deliver HDMI data without loss, even using multiple channels (if properly supported)?
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make install -not war
I don't see this as a problem at all; you shouldn't be putting so much strain on your connector that you need screws to hold it in. If you have a long, heavy cable hanging from the back of your TV, hold it in place with a cable clip so that there is no strain on the connector at all. I much prefer small, friction-based connectors to the old VGA and DVI style connectors.
HDMI Licensing, LLC
This is perhaps unrelated to the original purpose of the thread, but HDMI Licensing, LLC? So there's a whole company whose purpose is just to license the HDMI Connector? Well, they're not doing a good job, because it's all but impossible to find HDMI to HDMI connectors at most stores.
More than that, has anyone heard of an RCA Cable Licensing LLC? A cursory search of the internet doesn't yield any attempts by RCA to control dissemination of the now ubiquitous cable. Perhaps HDMI doesn't need a whole company....
The assertion "it's not wireless HDMI" is, IMHO, intentionally misleading. Technically, using their logic there is no HDMI because you could equally say, "Well, there's a possibility today's physical cable won't pass whatever standards they approve". To me it's retarded. You're building DRM into the cable? I'm not sure the Home Integration Market (the guys who specialize in big dollar home theater jobs in really nice houses) realize the implications down the road. Your really nice in home modulator, etc, may become obsolete when new DRM-expectant devices don't see "the secret code" and shut down any content they don't recognize. One of the other posts on here did a good job explaining the impact, using the example of plugging your PS3 through a receiver to a projector. I do just that with my XBOX360. I send it through my Denon high-end receiver. The 360 content isn't touched, but the DVD (standard def) input, and VHR player are upscaled and sent out the single Component Output for the projector. In other words, I use my receiver to switch between inputs to the single, component input of the projector.
And why should there be such a thing as a "digital issue?"
I don't remember any "modulation issues" when FM radio was introduced. You just bought the damn radio and it worked, except the sound was better than AM.
I don't remember any "magnetic issues" when cassettes were introduced. You just bought the damn cassette player and it worked, except the sound wasn't quite as good as LPs... but the cassettes were compact and there weren't any ticks, pops, or scratches.
And for that matter I don't remember any "digital issues" when CDs were introduced. You just bought the damn CD player and it worked, except that the sound was better then on cassettes. (And for 98% of all ears on 98% of all recordings in 98% of all real-world consumer situations, it was much better than LPs, too).
If the customer is using HDMI and having "issues," then they're HDMI issues.
"How to Do Nothing," kids activities, back in print!
If the morons who designed it had any experience with actual AV equipment, they would have copied HD-SDI instead of DVI.
HD-SDI lets you have 100m runs over standard 75ohm cable, terminated in standard BNC connectors.
Compared to HDMI or DVI which can't be terminated, so it can't be run through walls, and running it through a wall would probably exceed the maximum run anyway. The only way to make a long DVI run is to use expensive extenders that require power on either side. And even then
If the guys who designed HDMI had copied HD-SDI instead, there would be no home theater installation issues.
dom
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But, thar WEEL BE BLOOD. WHen the FCC starts shitting bricks over the backlog of anal log uptake constriction. They can give out all the coupons they want, but there will be those who don't or won't get them, and they'll be cut off. I don't know if they'll be in some place in Tennessee or the Ozarks, but if they get their hands on congress, thar will be blood... It'll be crude, but it'll be red...
Previously: "Linux... Toward the Sunrise..." Now: "Linux... Toward the-- No, now, part of Every Sunrise"
Last I checked and tested the longest a *COMPLIANT AND CERTIFIED* HDMI cable could go was 40 feet. Anything further without increasing the thickness of the wires caused massive problems, and that's across HDMI 1.2 and 1.3 spec.
So where the fuck did you buy your 50 foot cable?
http://www.bluejeanscable.com/articles/how-long-can-hdmi-run.htm
Still waiting on Serviscope_minor to wake up to fucking reality and realize that Jessica Price isn't going to fuck him.
HDMI is part of a whole. The idea is to cease analog outputs. No HD will be allowed without HDCP. Note any upscaling DVD players only upscale via HDMI, analog outputs are limited to 480. HDCP is not a requirement of HDMI, but having a license for HDMI means that if I make some sort of HDCP stripper, the agency that licenses HDMI can come after me for violation of their license. It is true that HDMI does NOT require HDCP, but HDMI is not an "open" format or standard, like an RCA jack. So, the industry is not totally stupid. Knowing most consumer electronics lasts 2-8 years, we gently introduce HDMI, allow the analog equipment to mostly wear out, and once the analog ports disappear by industry agreement, you will see the image constraint token used. Think of this like Macrovision. It's a pain in the behind to the casual user, but trivial to the pirate. As the older stuff dies, the new stuff will just happen to have ICT, and HDMI only for any HD output. Anyone who thinks that the voluntary ICT hold back is permanent is deluded. The lockdown is proceeding apace. The only fly in the ointment is the lack of interest in Vista and the new HD disc formats.
Your strawman: "you think copper wiring is cheap" What metal cheaper than copper are your HDMI wires made of?
Well, they admit that "video data is encoded using the JPEG2000 video codec". Since they don't claim it's the lossless version (and the compression ratio down from 10.2Gbps would be too high otherwise), it's got to be lossy compression. Which means it's not HDMI.
But I guess it's better than nothing, where the rest of the system is HDMI and wireless is required, and evidently it will interop with the other HDMI links in the signal path. And later, when when someone uses H.264 to compress only 20-30x, they'll have to replace only that link in the path.
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make install -not war
Less than 50% of the nation at this point doesn't have something other than OTA broadcast. A somewhat smaller fraction hasn't bought a new TV with a digital tuner yet. I'm one of them, but I'm fairly unusual.
Still, I know about the coupons, they've been broadcasting ads on the TV about the shutoff.
At this point I'm merely waiting for the boxes to be available. I think that relatively few people addicted to their OTA broadcasts are going to be caught unaware.
There will be some idiots that complain, but then, in a country of 300 million, I can find somebody to complain about most anything. Most caught by the changeover will simply go out and buy the converter box, coupon or not.
I don't read AC A human right
The first time I saw tech posts with Wireless HDMI I knew it was more then likely impossible. Not impossible to accomplish, but highly unlikely you could make it perform well enough to actually push HDMI over the signal reliably and viably for the home theater market.
Mostly, from a technical position since it takes a VERY fast wireless signal to send a HD transmission. I am sure that the target market is not expecting only SD to work well over Wireless HDMI. Every device I have seen so far that attempts to send HD signals over a network, regardless of HDMI, fails horribly. It's a very simple issue of bandwidth. Wireless G cannot possibly handle it, even under the best of situations. Wireless-N is all just draft anyways, and in my experience tends to perform poorly compared to its specs.
They sell a lot of HD wireless media devices, but I have yet to hear (directly) that any of them actually performed in real world situations. This is a case of vendors just being dicks and pushing out products that only operate under %99.999999 ideal conditions. Some of the processing power is so strained on them, that I am surprised they can run a UI while transmitting data at all. Anything less then lab perfect conditions, and you start to visually see problems with the transmission itself.
Additionally, the last I heard was that HDMI can require 4.95Gbps to 9.9Gbps to send video information. I admit, I don't know exactly what kind of resolution is generating that traffic. I just know that is what I hear is being transmitted on HDMI cables.
What wireless technology, that is cheap enough for home use, can push that much bandwidth? One of the last demonstrations I saw reported on said a whopping 3 FEET was shown with the wireless HDMI unit. I am pretty sure you can rig up a wireless solution for only 3 feet that can push the required bandwidth. Let's try something real world and practical like 15-30 times that distance.
P.S - I am sure some people are getting confused by the article, in that it implies that there is no licensing for these products. The guy only stated that there is no such thing as Wireless HDMI, coming from them specifically. There is no agreed upon standard for HDMI being transmitted wirelesses yet. He advised that it should be called Wireless *for* HDMI.
P.P.S - I know that HDMI and HDCP are different. An HDMI device can be HDCP compliant, but it does not have to be from what I understand. So one does not imply the other. I want to know if these devices are even HDCP compliant in the first place.
The only thing HDMI gets you is a crappy connector and it carries audio as well as video. Whoopy-freakin-doo!
Bluray and HD-DVD both offer high resolution audio soundtracks-- imagine a CD, uncompressed, in 7.1 channels. On some players, you can hook them up with 3 pairs of RCA cables. On the PS3, and lower end HD-DVD players, the necessary analogue jacks are not present-- only hdmi.
Yes, you can use SPDIF, but it lacks the bandwidth for anything more complex than DTS/Dolby Digital.
Cable companies (Comcast) are advertising the benefit of being on cable -- since cable TV won't convert to digital anytime soon for their bottom (i.e.: standard, no extra charge) tiered services.
It's true that there is no wireless HDMI (due to the enormous bandwidth requirements of uncompressed high definition video), but a new standard is emerging called Wireless HDAV.
In a nutshell, there's a real-time 1080p H264 encoder on one end, then a UWB wireless link (claims of up to 10m) followed by an H264 decoder. Hopefully they will allow one to directly inject H264 content (from a cable/iptv box or from other sources), then use this technology to send it to the TV for decoding. Applications such as video game consoles can pass through the H264 encoder first.
This was just announced so technical details such as video bit rate are anyone's guess, but if this was correctly implemented we may one day be able to get rid of the rat's nest of wires behind our entertainment systems because everything will self-configure wirelessly.
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I do remember issues with FM Stereo.
It's due to the pilot tone being within the human hearing range, 19 kHz. The receiver is supposed to notch-filter it out and use it to regenerate the carrier for AM demodulation of the "Left-Right" channel (the "Left+Right" channel was sent where mono FM would be).
Many receivers in the '70s had very poor notch-reject filters and would let the 19 kHz pilot tone through; if you had decent speakers and good hearing, that meant a continuous high-pitched whine when listening to FM stereo.
Or, worse, flaws in receiver design would have cross-talk and an amplified version of the pilot tone would feed into the output stage. These ones were easy to fix; just turn off the FM stereo circuit.
You also wouldn't want to listen to an FM stereo channel with a mono receiver and good speakers, unless the receiver was modern enough to "know" about the pilot tone and have brick-wall filter above 15 kHz.
And I've had plenty of azimuth issues with magnetic tape. Commercially-recorded tapes were horrid; the signal quality was often pretty good, the problem was, the head alignment was different between any two tapes you'd care to name. So you wouldn't get good sound from any one tape without fiddling with the azimuth screw on your deck.
Digital can be infinitely regenerated. Other than that, there's no reason for it to not suck.
The actual threat to your personal media freedom posed by HDMI is worth sticking with analog or go fancy and get a digital output for your freevo/mythtv box.
Digital offers all the hi-def goodness with none of the DRM evil.
http://www.maxineudall.com/2010/02/should-economists-be-sued-for-malpractice.html
That IS be true... (A play on "thar weel be blood", hehehe, bad one, huh?)
Previously: "Linux... Toward the Sunrise..." Now: "Linux... Toward the-- No, now, part of Every Sunrise"
Oh wait.. Yeah, it does exist! It's right on The Register.
(Belkin 5ghz wireless HDMI transmitter at CES)