HDMI and What it Will Do for You 382
CrzyP writes "AnandTech has whipped up a short but informative article on the new HDMI digital audio/video connection standard that is said to be the successor of DVI. Take a look at what this new standard is all about and what we can expect from it in the future!"
What WILL it do for you? (Score:5, Informative)
The first question that should pop into your head right now is why we would need HDMI on the PC when it physically does the job of DVI particularly considering how few people actually use DVI instead of analog connections! The answer is, again, copy protection.
Four years ago Cox wrote something in LKML that has stuck in my head since:
So you cant tap the data anywhere.
Think
encrypted music fed to an encrypted audio controller to speakers which
decrypt and add watermarks
encrypted video decrypted and macrovision + watermarked only in buffers
the CPU cant access
audio input that has legally mandated watermark checks and wont record
watermarked data.
That is the dream these people have. They'd also like the OS to scan for
"illicit" material and phone the law if you do, and to have a mandatory
remote shutdown of your box
(and if you read the MS media player license anyone who agrees to it signed
up to that)
Alan
Re:What WILL it do for you? (Score:2)
It's already in development.
Codenamed 'Microsoft Totalitarian 2007'.
Re:What WILL it do for you? (Score:5, Insightful)
What is it good for
Absolutely nothing
HDMI
What is it good for
Absolutely nothing
HDMI is something that I despise
For it means destruction of fair use rights
For it means tears in thousands of users' eyes
When they try to record a show, but it's called a crime...
Re:What WILL it do for you? (Score:2, Insightful)
This is exactly what they want to use HDMI for!
Why use this when you have DVI?
This is the only reason. Control your computer from time you sign up to download the file till you output on your big screen TV.
Total encryption. Total Control. Total Trust.
Dammit this is MY computer! I don't want to be forced by industrial Microsoft/Sony/DMCA/RIAA/Who-ever-the-hell-else into giving up the right to control the bits on my own fucking harddrive!
It better be a failure! The corporate media intres
Re:What WILL it do for you? (Score:3, Funny)
Re:What WILL it do for you? (Score:4, Insightful)
Pretty soon, if you want a modern computer or TV, you'll be using this technology whether you like it or not. Sure, you can get along without a TV, but good luck finding a spouse who's also willing to completely give up TV because of your philosophy. But no computer? You're basically exiling yourself from modern society if you try to live without one. Are you going to go back to paying all your bills by check, dump email and write letters to people, etc.? What about a job? Unless you're planning to leave the tech industry altogether and go into construction or janitorial services, you can't even send someone a resume without a computer. Who'd hire a programmer or network admin who can't email a resume?
There's lots of things about society I don't like. I don't like how corrupt local governments are in regards to traffic laws, in that their police issue baseless tickets, and the cost of the ticket is the same as the court costs (which you have to pay even if you win), in order to generate revenue. Am I going to stop driving and just walk everywhere because of this? No; I wouldn't be able to hold a decent job that way.
Unless you're going to seriously cut all ties with society and move into the woods and live in a tent for the rest of your life, please drop this stupid argument.
Meanwhile, the rest of us have real lives to lead, within society. Of course, some of us will hopefully spend a little time trying to break these chains that bind us (i.e., reverse engineering).
Re:What WILL it do for you? (Score:3, Insightful)
That's fine if all you want to do is play old games or whatever, but if you want to work with anything current, it won't work. Pretty soon (though they've been saying this for a while), you won't be able to watch TV any more without new DRM-enabled equi
Re:Get government out of the free market place. (Score:3, Interesting)
Huh?
For one thing, there is no "free market place". A totally free market would be anarchy. Without government intervention, there would be no TV, radio, Wi-Fi, etc., because there would be no standards set and enforced. Every industrialized country has an equivalent to our FCC, for good reason.
Second, the broadcast flag and other DRM measure
Re:What WILL it do for you? (Score:3, Informative)
Come on. No one, at all, would risk their money, their careers, or even a day's work, to produce "Arrested Development" or "Curb Your Enthusiasm" if they couldn't back up the huge investment with the expectation that the people they're selling it to will actuall
Re:What WILL it do for you? (Score:3, Insightful)
Actually, I really like the term "piracy" in this context. Historically, it refers to a practice (and the hence the practitioners) of stepping into the middle of a transaction between other people (say, the provision of a service, like shipping things between the continents) to which you were not invited and about which you did not negotiate, and taking advantage of that service's presence. In essence, the pirate doesn't want to build boats,
Re:What WILL it do for you? (Score:2)
Access to entertainment is a choice and a privilege, not a right nor a requrement.
"For Me" (Score:5, Interesting)
HDMI and What it Will Do for You
From what I read in the article, it will help the media companies to prevent fair use of the signal. Other than bundling audio, how will really benefit the consumer?
Re:"For Me" (Score:3, Funny)
1) You go from $6 DVI cables to $99 HDMI cables
2) ???
3) Profit!
Re:"For Me" (Score:5, Insightful)
It's not so much what it'll do for you, it's more about what it'll do to you.
DRM (Score:5, Informative)
Morons.
Re:DRM (Score:2)
Re:DRM - Generation 1 Digital Copies (Score:2)
I'll accept perfect digital copies of a rip one generation removed from the original. I suspect most others will as well. For the guy with the penis-extending $10K audio system, he was probably planning to spend his next 10 KiloBucks on original sources anway.
For the rest of is, it will still sound better than AM.
HDMI is cool, but do PC Vid cards have plug yet? (Score:2, Interesting)
Re:HDMI is cool, but do PC Vid cards have plug yet (Score:2)
Why would it be 'sweet'?
Re:HDMI is cool, but do PC Vid cards have plug yet (Score:3, Funny)
Reminds me of a fool I know who spent a fortune on moster fibre-optic cables and then kept ensuring me how the difference was "obvious" when compared to random cheap cables. Heh.
Re:HDMI is cool, but do PC Vid cards have plug yet (Score:3, Informative)
Do you think that a 1080p (~2MPixel) signal at 24bit and 60Hz is a trivial amount of bandwidth? A nice DVD player will typically feature a 108MHz DAC to provide sufficient data to the monitor. This is not the kind of data rate you can pass through just any cable. Su
Re:HDMI is cool, but do PC Vid cards have plug yet (Score:2)
And no, my memory doesn't have have gold contacts, because the motherboard connector doesn't have gold contacts. Need I remind you what happens when two dissi
Re:HDMI is cool, but do PC Vid cards have plug yet (Score:2)
oh noes (Score:2)
Another must-buy limited edition collectible format for the Star Wars Hexalogy!
Hrmph. (Score:5, Insightful)
DVI with DRM!
Sign me up!
Re:Hrmph. (Score:3, Informative)
That's the same thing done in HDMI.
HDMI seemed awesome but has problems (Score:3, Interesting)
Re:HDMI seemed awesome but has problems (Score:2)
Hooray (Score:5, Interesting)
It's line-compatible DVI with a pair of lines for digital audio, and a slimmer connector.
It can carry 5gbps over copper, more than enough for 1080p video and 8 192khz audio channels.
Re:Hooray (Score:4, Informative)
"The first question that should pop into your head right now is why we would need HDMI on the PC when it physically does the job of DVI - particularly considering how few people actually use DVI instead of analog connections! The answer is, again, copy protection."
HDMI is too complicated. (Score:5, Funny)
Re:HDMI is too complicated. (Score:2)
Re:HDMI is too complicated. (Score:2)
Where is this headed? (Score:3, Insightful)
What does that mean anyways? Will consumer electronics companies still be allowed to include non-HDCP compliant inputs? I hope so, but I wouldn't put it pass our regulators to require the crippling of perfectly legal electronics (witness DAT & the broadcast flag). How can we stop this crap?
Re:Where is this headed? (Score:5, Interesting)
It also comes with schematics (on CD).
I studied the schematics and was astonished by what I found: the HDMI digital input is terminated at a special purpose chip that deserializes and deframes the data, decrypts the HDCP, and converts the R, G and B to ANALOG!
So on the output of this chip there is a normal RGB (plus sync) signal. This is fed to the switching matrix (where it is combined with all other inputs the TV supports) and then this analog RGB signal is again digitized and fed to the scaler that scales it up or down to drive the LCD panel.
This amazes me for two reasons:
1. I would have expected that the digital DVI or HDMI signal would go directly to the scaler without first being converted to analog and then back to digital. What point is there in using a digital input, this way?
2. It provides an accessible and decrypted version of the HDCP-protected stream. Assuming this special-purpose chip is commercially available, it will be trivial to build a HDCP-circumventing box, just like the anti-Macrovision boxes...
Re:Where is this headed? (Score:5, Informative)
HDCP is designed to protect the digital stream, not the analog signal. If the chip decrypted the digital stream and fed it to the scaler, it would be vulnerable. It looks like that by converting it to analog in the same chip, they're preventing the decrypted digital signal from being copied. Sure you can re-encode it, but you can do that with an analog output just as well.
Re:Where is this headed? (Score:3, Insightful)
Re:Where is this headed? (Score:2, Informative)
It's not cable loss, it's the D/A and A/D converters themselves that are less than perfect, and thus introduce noise.
Re:Where is this headed? (Score:3, Insightful)
The OP describes the signal path as such:
[Device]->[HDCP]->[D/A conversion]->[A/D conversion]->[Display]
Now if I capture the signal between [D/A conversion] and [A/D conversion], I'm effectively capturing the exact same quality signal that I'd be seeing on my TV.
Bit perfect? Nah. Close enough? You betcha.
There's also the irony that a supposedly digital connection is in fact still going through multiple digital/analog conversions.
Nathan
Re:Where is this headed? (Score:2)
For starters, Join the EFF [eff.org]!
Please!
Sure thing, buddy! (Score:2)
Dear slashdot editors,
I think you didn't have to include this sentence from the submitter. This is not some highschool newspaper or corporate newsletter from HR. Don't take this as approval for any other sentences that makes reference to Linux in a non-Linux story or a question that just needs a "Yes/No" answer.
Why? (Score:2)
No thanks (Score:5, Funny)
Re:ok... (Score:2)
But this is how we meme things.
(I know, I know... "verbing weirds language.")
Upfront Costs... (Score:3, Interesting)
The company I work for has been asked by many interested customers when we will be having HDMI addons for a number of our popular video playing products... because of the costs involved, we have had to hold back on any kind of rollout of these things.
In order to do licensed development of HDMI components (on the sending or receiving end), it runs about 30k... for the licensing alone! After that of course you have the joys of per unit costs, which we don't care about so much.
Chances are, we wont be doing HDMI until more customers are demanding it, shame though, I'd love to get my hands dirty with it.
Re:Upfront Costs... (Score:2, Interesting)
So other than bundling 8 channels of audio over the copper, what really makes it great for your company? The DRM and licensing costs? Seriously, I'm not trolling you: What makes this such a great thing for consumers.
Greed hinders greed? (Score:5, Interesting)
Is Hollywood greed killing Hollywood greed?
Are they actually greedy enough to want to not only license their DRM technology to people who would actually implement it, thus stifling their ability to completely cripple fair use?
Or is this a subtle way that electronics companies accomplish this -- engage Hollywood in DRM technology, settle on standard, quietly charge big bucks to hardware developers knowing full well they won't adopt your does-nothing-other-technology-can't-but-DRM, continue using cheaper/easier/DRM-less technologies, continue selling tons of copy-enabled (at least somewhat) technology to eager consumers?
Or is this just one of those "barrier to entry" fees that keeps HDMI development kits out of the hands of small players and off eBay so that its secrets stay secret longer?
Eh, no big deal IMO... (Score:5, Insightful)
Its not like people are capturing video off VGA/DVI now, at most it'll affect KVM switches, projectors, etc.
The biggest issue with HDMI is the fact that it may become an exclusive output system. IOW, no way to support VGA, DVI, etc. I dont see video card makers and companies like nVidia and ATI saying "you have to buy a new HDMI compliant monitor to run this new video card". Its in their interest to sell the most video cards, not raise barriers to entry to purchasing their products.
Re:Eh, no big deal IMO... (Score:3, Informative)
It's not only possible, it's easy, using off-the-shelf components.
First, convert the DVI signal to HD-SDI, which is the standard that all the professional HDTV editing gear uses.
Miranda DVI-Ramp [miranda.com]
Next, capture the HD-SDI signal to your hard drive.
Blackmagic DeckLink HD [blackmagic-design.com]
You will need a serious disk array to handle the bandwidth, but you will end up with a digital copy of the signal put out over DVI. That Miranda box does sub-sample the RGB (4:4:4) signal to YCbCr (4:2:2), but it is only a matter of time
Make you go broke (Score:5, Informative)
And even with a HDMI cable I don't see any improvement over DVI even though my dvd player is upsampling to 1080i. Also having sound over it is pretty useless in a home theater enviroment, I still have to run a tosh cable from my dvd player into my reciever. I guess it could be useful if the AV reciever had HDMI inputs, but that would still require 2 cables.
Re:Make you go broke (Score:5, Insightful)
In the analog world, a logical case could be made for high quality cables because any interference would be propogated through the system and hurt audio quality.
In digital cables, it's just ones and zeros.. As long as the digital data is there, it's not any better or worse regardless of the type of cable.
If your digital cable is not working well, it should be very obvious in the audio/video output.
Re:Make you go broke (Score:2, Informative)
Re:Make you go broke (Score:3, Insightful)
You replied:
I think you misunderstood tji. I think that he meant "As long as all the bits are getting through reliably, you don't get more fidelity from an expensive cable." Which is, of course, true.
-Peter
Re:Make you go broke (Score:2)
Re:Make you go broke (Score:3, Informative)
What I've been wondering for a while is if HDMI (or DVI) will give me any improvement over component video cables for HiDef 1080i TV.
Anyone know?
Re:Make you go broke (Score:2)
From my understanding, HDMI was DVI plus digital audio (up to 7.1).
FWIW, I noticed some slight improvement for the 1080i using the DVI connector vs the component video connectors from my Hughes HD receiver (outputs RF/composite/S-video/component/DVI/HDMI) to my Sharp LCD HD display (accepts all those and odd firewire, pc data cards).
My DVD player is older and its highest output quality is component, but since it's only 480p I'm not sure I'm missing too much. I'm accustomed to viewing DVD's under S-video,
Re:Make you go broke (Score:2)
Had the same thought about connections... (Score:2)
It does make some sense if you are routing a DVD player output to a receiver that also acts as a video switch. But if you are going that high end you will probably not be sending anything but video to your display.
They've got all the bases covered though with DVI-HDCP which adds encryption to the DVI signal so you can't play it from a standard DVI unit unless it also supports HDCP. But this to me seems a l
Re:Make you go broke (Score:2, Informative)
Cables have something like 1000% profit margin for retailers - it's one of their cash cows (after they lure you in with specials on the peripherals that no longer include cables).
I've bought cables online for a few years and only buy retail in a pinch. If you're the kind of person to understand cables are cheaper online, you probably did enough research on your HDTV to know you should have ordered the cables a few
Re:Go to bestbuy (Score:2)
last march, i bought a quality TFT in a large electronic discounter. Wasnt much more expensive then online. BUT there was no dvi cable inside, so i wanted to buy one.
2m. 50 euro.
Bought one online, 5m
THe cable market can do such things because there are enough idiots around that will think "more expensive is better", especially with
Re:Go to bestbuy (Score:4, Informative)
It usually depends on the brand name and store. I used to work for Best Buy and we got everything 10% above store cost. Cabling and Car Audio were the two most marked-up products. Car speakers and decks were commonly marked up over 600%. I've seen cabling marked up as high as 2000% (yeah - three zeros)! Watch batteries that sell for $3.97 cost me around $0.26. I bought $1600 worth of car audio equipment (deck, four new speakers, all new cabling, amp, sub, box, etc.) for less than $400 - installed.
In other words...
Retail will rip you off! Retailers often make more money off of the USB cable you have to buy (because it's not included with your printer) than they make on the whole ocmputer/monitor/printer combo.
Never buy high-end A/V or computer cables retail. If you see a $100 DVI cable at Best Buy or Circuit City, you should be able to find it online for less than $40. It's still a rip-off, but it doesn't hurt to walk or sit down afterwards.
Question (Score:2)
Don't want audio and video on same plug (Score:2)
Re:Don't want audio and video on same plug (Score:2)
James
Limited uses for most users? (Score:2)
Useful for Home Entertaintment? For quality setups, its even less useful since the video and audio are going to different outputs (speakers and a TV for example)
So what good is this connecter?
I still can't believe it (Score:2, Interesting)
It stupidity to be a new way of life of something ?
I'm all for capitalism, but watermarking the sound my speaks produce ? Isn't that pushing things a bit too far ? Can't we sue the companies for it ? After all, the sound being produced it not the same sound we payed for.
And heck. It is MY computer. I can plug anything I want on it, not only "RIAA approved" devices. And I don't even live in USA, so why should I care if RIAA approved my devices or not ?
I'm still
Re:I still can't believe it (Score:2)
Re:I still can't believe it (Score:3, Interesting)
This isn't really the workings of capitalism. Under capitalism, schemes like this would fail, because they would be rejected by consumers, who hold a certain level of sovereignty in the marketplace, and any company basing its economic future on such foolishness would crumble accordingly. However, under the quasi-socialist state that is America, we have an unconstitutional governing body (the FCC) that can MANDATE the inclusion of DM
It does a few things right (Score:2, Informative)
There are tradeoffs of course. In order to reduce the connector size they eliminated the analog link and the second digital link. I think the improved signal
Re:It does a few things right (Score:2)
Legailty and workarounds (Score:5, Interesting)
I read this article this morning and it really pissed me off (especially how rabidly positive the author was about the connector) -- now PC users will have to contend with all the DRM nonsense that the people who bought new HDTVs recently will soon be exposed to.
It brought to mind some questions though:
This is as big a problem as, if not bigger than, CSS.
C
So uh, what's the point? (Score:3, Interesting)
Technical note on 1080P over HDMI (Score:5, Informative)
Re:Technical note on 1080P over HDMI (Score:2)
Here in Europe the battle seems to go between 1080i and 720P.
Re:Technical note on 1080P over HDMI (Score:2)
Re:Technical note on 1080P over HDMI (Score:2)
To get 1920x1080 at 60fps you will have to scan it from the film at that resolution. And the film does not provide the 60fps anyway...
Re:Technical note on 1080P over HDMI (Score:2)
Re:Technical note on 1080P over HDMI (Score:2)
Given that 1920x1080 is not going to be worthwile below 42" screen, and given that most broadcasters see TV programming only as a way to ensure that viewers don't zap away between the commercials, I doubt the money will be spent on it.
So it adds a dubious advance in return for... (Score:5, Insightful)
call it: pointless (Score:5, Insightful)
For the DRM to work, the market will need to reach a point where the only input connector that TV's and speakers have will be HDMI ports. I expect this to happen around the year, hmm, let's say 3000. Here we are, a year away from the alleged switch to HDTV, and a huge percentage of the television sets sold still have good old-fashioned analog coaxial antenna jacks on the back of them. Good luck getting Every Electronics Manufacturer In The World to stop offering their customers the feature of analog connections. (We'll have direct-to-brain optical implants running on a descendant of Bluetooth before this happens.)
Audio connections won't go entirely digital until sometime around AD 4500. There's too many audiophiles with investments in $100/foot speaker cable to EVER accept an all-digital interconnect.
Another thing -- my video and audio signals don't output to the same device. The video goes to the TV, and the audio goes to the home theater system. Putting both signals on a single cable doesn't do me any good, I'll just have to break them out further down the chain.
Methinks this standard is just an attempt by Belkin and co. to make a lot of money selling aftermarket HDMI-to-DVI adapters.
One mechanical problem with HDMI (Score:2)
Change the language (Score:2)
These new restrictions are being marketed to consumers as "the next generation in protected media access," which makes it sound like the the DRM features are somehow benefitting the purchaser of these fair-use disabled devices.
These are not "copy protection" technologies. We don't need to be protected from our hardware.
These are "copy prevention" technologies.
Good idea to have audio and video on same wire? (Score:2, Interesting)
Splittable? (Score:2)
I have an HD television for daytime use and an HD front-projector for nighttime use, and it is a pain to synchronize all the source connections, because most sources (and most receivers) only have one high-quality output.
For
Wal-Mart to the rescue (Score:2)
I also managed to buy a three-connector Toslink switchbox that takes three inputs, and has one connection for going to a receiver. That was not at Walmart and I can't remember where I bought it. It works rather well though, and even switches network conectinos (no idea yet if it works as a switch, or a switch/hub - that is, i
DVI? (Score:2)
It all begs the question - (Score:2)
For artists that receive royalties from playback of their works, the artists will stand to make quite a bit of money, collectively.
So my question is this - Once all that data can be tallied properly and the evidence trails are secure and available, how will the recording studios cheat
This sucks because it's too short! (Score:2)
Then, one long cable carries the video signal plus USB3, so I could have my monitor, mouse and keyboard somewhere else in the house. Also, there should be a standard so that video signals can be made to be easily "networkable" so that I can switch any display device i
playstation2 connector? (Score:2)
Useless mandated technology. (Score:3, Insightful)
Re:F'ing sucks... (Score:2)
Re:F'ing sucks... (Score:2)
Same goes for the home theater setups. I've seen good DVD players hooked up via HDMI, and I've seen them hooked up via Component. It made no noticable difference to me.
I think most DVDs are only encoded in 480p at best. So component or HDMI are not going to make any difference if the input (the DVD) isn't superb to start with. Where this WILL make a difference is when you have the new HD-DVDs and/or Blu-Ray discs, with 1080p quality content.
Re:F'ing sucks... (Score:2)
It's different than what you were pointing out, but it's still a valid point - digital data tends toward better noise immunity.
Re:It has to be said, so let's get it over with (Score:2, Funny)
In Soviet Russia, DRM regulates YOU!
s/Soviet Russia/USA
Re:It has to be said, so let's get it over with (Score:2)
It's pretty stupid when you think about it; "We'll give you encrypted content, and a key, but decrypting the content may or may not be illegal, depending on what you do with the content after you decrypt it". It's doubly pointless s
Monty Python (Score:2)
Re:Could be a great technology. (Score:3, Insightful)
Re:It's already here.... (Score:2, Funny)
I haven't even seen any with DVI, all the stuff on sale near me is SCART.
I live in england and still have a VGA monitor. Am I really behind the times?
15" LCD is enough for me.
Re:It's already here.... (Score:2)
Re:DVDs still 480p (Score:2, Insightful)
So HDMI is nice because the cable is much thinner than DVI and combines digital audio and video into a single cable.
The DRM aspect of HDMI is not nice, but talk to the FCC about that one. They are making manufact