Serial digital interface - Page 1
Forum section: electronics / general

author: BBQ
author_rank: Regular Contributor
timestamp: February 16, 2014, 07:22:54 pm
content: QuoteThis would be so much more practical to have on consumer products, as it uses BNC connectors and cables. The reason it is not used is because it is unencrypted, very sad...So what do you think about that, to get some discussion going.http://en.wikipedia.org/wiki/Serial_digital_interface

author: Tinkerer
author_rank: Frequent Contributor
timestamp: February 16, 2014, 09:14:42 pm
content: I find the un-encrypted part to be a bit odd though. Its simply transmitting data, and the wire/connector shouldnt care about the data being encrypted or not. It would seem like the only thing to do would be to have a step for encryption before transmission takes place.Anyway, I have had plenty of experience at home with the old antennas and such using BNC connectors. Not that particular style, but the idea is still the same as is stated.

author: ConKbot
author_rank: Super Contributor
timestamp: February 17, 2014, 01:33:27 pm
content: Quote from: Tinkerer on February 16, 2014, 09:14:42 pmThe wire doesnt care, MPAA/whatever studios care. They have to have their thumb on the consumers, demanding that the link between the source and the display is encrypted. Want to hook up your blu-ray player up to an old LCD with a DVI input that you have for your workshop via an HDMI-DVI adapter? Too bad, if its not HDCP encryption enabled youre out of luck, go buy another monitor. Youre not to be trusted, and have to play by their rules to watch their precious movie.Nevermind the fact that pretty much every encryption scheme that is devised to protect tv/movies/etc can get cracked usually within weeks, definitely within a year of its releaseSo its not going to hinder piracy at all, just consumer fair use.

author: rexxar
author_rank: Frequent Contributor
timestamp: February 17, 2014, 02:30:31 pm
content: Quote from: ConKbot on February 17, 2014, 01:33:27 pmBut ZOMG teh pirates are gonna stole all our movies!!!!!1! Movie producers will to starve to death because lost sales! All the copies will get stoled!!!The MPAA is the biggest crock of shit I've ever seen. The RIAA is no better. In fact they're worse, suing dead people thousands of dollars for downloading single MP3s, and grannies because someone used their WiFi signal.Who the hell is gonna bother recording something over HDMI when all disc copy protection schemes are already broken? Everyone just rips the movie from disc; uploading to TPB optional. There's even fair use cases for this; AFAIK it's perfectly legal to keep backup copies of your own movies, so long as you don't share them.

author: rkupka
author_rank: Regular Contributor
timestamp: February 17, 2014, 02:49:40 pm
content: Quote from: BBQ on February 16, 2014, 07:22:54 pmyes, that is true for consumers products. In professional/broadcaster world, SDI and HD-SDI is defacto standard. And they also have to cope with HDMI/HD-SDI conversion, if they want to use FullHD 3rd party content in their pruduction. All professional HDMI/HD-SDI signal converters have to be HDCP compliant, i.e. if content provider decides to apply HDCP, the conversion will not be possible...... and that is perfectly ok.

author: NiHaoMike
author_rank: Super Contributor
timestamp: February 17, 2014, 03:04:55 pm
content: Is there any reason they couldn't just amend the spec to support encryption?

author: rkupka
author_rank: Regular Contributor
timestamp: February 17, 2014, 03:13:51 pm
content: Quote from: NiHaoMike on February 17, 2014, 03:04:55 pmwhy would they want it there ? SDI and HD-SDI was never meant for consumer market. SDI standard is for broadcasters toolchain (i.e. content creators), where any encryption would be pointless.HDCP encryption serves completely different purpose.

author: Marco
author_rank: Super Contributor
timestamp: February 17, 2014, 03:21:26 pm
content: When it's bandwidth was still sufficient as a single link the high speed serial meant it was more expensive than TDMS ... now it's single link bandwidth is not sufficient a lot of the time and multilink SDI certainly is not very practical.It has never been very practical.