UG! Since when did H.D.-D.V.D. start using BLUE lasers?

[AlexKx]

Help me! I've been discuing the whole Blu-Ray/H.D.-D.V.D. fiasco format war with someone and I made the claim that H.D.-D.V.D. will not be able to hold as much storage space because it uses a RED laser. I have since been told it uses a BLUE laser and when I look at the unreliable website of Wikipedia it says that H.D.-D.V.D. uses a blue laser. What the hell? I thought the whole point of Blu-Ray being able to store more on it is because it uses a BLUE laser while no other format does?! Am I off my rocker and on the floor again?!

[richard lichtenfelt]

It's not the color that is important here, but rather the fact that the blu-ray laser has a finer aperture. The blu-ray laser uses a higher quality dual lens system which allows for better focus. Hence the increased player cost.

[Storm]

No. HD-DVD uses a red laser, thus the less expensive prodution costs.
One of their "big" selling points is there is no need to change active production lines that make SD dvd.

[Dogdvr]

Wrong they both use blue
http://en.wikipedia.org/wiki/Blue_laser

[turfman1964]

Both formats use the blue laser. The same production lines come in the fact that hd-dud uses a less stringent pitch variance in how the information is stored on the disk hence less storage per disk. Blu-ray is more advanced and that is why it takes a new production line to make it.

[AlexKx]

Now I'm really confused. For forever and half I have thought HD-DVD used RED laser. Now even this website says it uses Blue. Sigh. Well...there's at least one poster before me who thought what I did. Even this website disagrees with what I thought I always understood. What the hell.

[AlexKx]

...and you all wonder how any format is suppose to win this war when it is so difficult to understand! I DO understand but it's quite a bit to get across to someone to PROVE the difference and significance of Blu-Ray. Does that not make sense what I'm saying? I have President Bush communication skills so there you go.

[Storm]

Originally Posted by AlexKx

Now I'm really confused. For forever and half I have thought HD-DVD used RED laser. Now even this website says it uses Blue. Sigh. Well...there's at least one poster before me who thought what I did. Even this website disagrees with what I thought I always understood. What the hell.

No biggie. Maybe we are both confused. Anyway, if wrong I stand corrected.

[Sonny]

FACT THEY BOTH USE BLUE LASER TECHNOLOGY

[AlexKx]

Well for years I thought that Blu-Ray discs were specifically to STORE more hours of film on them and it wasn't until a few months ago that I even figured out that that was not what they were being used for WHATSOEVER! It's completely different because they are being used for High Definition which uses all of the great storage space for the four or eight hours instead of ten to twenty I thought that they would have. That blew my mind how I was expecting this product to be something so different. It actually can do what I was talking about I suppose if you were to transfer home videos to Blu-Ray. Anyway. I'm still hoping to no end that this format wins the war and the sooner the better. I still appreciate its High Definition capablities and even then they are taking about expanding it to 100 gb or more. Something that (from what I am still understanding!) HD-DVD cannot do. Then again everything I learn ends up being false so phuck me backwards.

[richard lichtenfelt]

http://www.pcworld.com/article/id,10...1/article.html
"Both formats make use of blue laser diodes, which is how they are able to have capacities well beyond the 8.5GB of a dual-layer DVD. As the name suggests, the lasers used in the system emit a blue light, which has a shorter wavelength than the red light used in CD and DVD players. This means the size of the laser spot on the disc is smaller and so more data can be fitted in the same space."

[Storm]

Here ya go Alex. Wow them all with its a blu-violet laser.
http://www.engadget.com/2005/09/19/b...on-s-division/

[HeavyHitter]

As I understand it....originally, HD DVD was going to be red laser at 720p. Once they heard about Blu-ray and it's specs, they switched over.

[AlexKx]

WHHHAAATT???!!! So now I WAS right I just haven't been updated?! When was this and when did it change? Wow! PLEASE don't leave me hanging on that one if you don't mind HeavyHitter!

[Alan Gordon]

Originally Posted by AlexKx

WHHHAAATT???!!! So now I WAS right I just haven't been updated?! When was this and when did it change? Wow! PLEASE don't leave me hanging on that one if you don't mind HeavyHitter!

Years ago, HD DVD was supposed to be a DVD that had HD encoded on it (in 720p) using advance codecs. When Blu-ray specs became so advanced over HD DVD, they decided (among other quality things), to switch to using a blue laser a year or two before HD DVD came out.

~Alan

[Elandyll]

What's funny, is that I'm pretty sure the technology behind the Blue laser for Data storage has been developepd by IBM and Sony (for the video applications)

[xtop]

hd dvd = red
blu-ray = blue

but as its been mentioned..its not the laser. ever notice a different color case?

[cleric]

[bluskiff]

ya I thought that too and got slamed for it. I went blu for the higher bandwidth/more space/none scratch coating and studio support.

[m6bigdog]

Originally Posted by AlexKx

Now I'm really confused. For forever and half I have thought HD-DVD used RED laser. Now even this website says it uses Blue. Sigh. .... What the hell.

Most comprehensive info on Blu-ray and the differences between Blu-ray & HD-DVD.

https://www.blu-ray.com/faq/

I would say the 40% larger storage capacity and faster data rate of Blu-ray pretty much sum up the hardware advantages of Blu-ray. Everything else is pretty much mut once the hardware advantages are evaluated. To support HD-DVD would mean you would end up with less capacity and speed in a world where capacity and speed become obsolete fast enough without giving 40% up at the start!!