Topic: Cd Vs Dvd Vs Hd-dvd Vs Blu-ray (Read 310 times)

twistedsymphony · « **on:** September 30, 2005, 01:47:00 PM »

CODE

CD DVD HD-DVD Blu-Ray
Capacity per layer 0.6GB 4.7GB 15GB 25GB
Current Number of Layers 1 2 2 1
Current Max Capacity 0.6GB 8.5GB 30GB 25GB
Potential Max Number of Layers 1 2 2 2
Potential Max Capacity 0.6GB 8.5GB 30GB 50GB
Max Number of Sides 1 2 2 1
Max Capacity Layers and Sides 0.6GB 17.0GB 60GB 50GB
Average Transfer Rate per Speed (X) 1.2Mbps 11.1Mbps 36.5Mbps 36.0Mbps
Current Max Speed 48x 16x 1.5x 1.5x
Current Max Transfer Rate 58.9Mbps 177.3Mbps 55.0Mbps 54.0Mbps
Potential Max Speed 48x 16X 9X 12X
Potential Max Transfer Rate 58.9Mbps 177.3Mbps 328.5Mbps 432.0Mbps
Speed type 1.2, CLV 4.0, CLV 6.5, CAV 4.9, CAV
Laser Color infrared Red Blue-Violet Blue-Violet
Laser Wavelength 780nm 650nm 405nm 405nm
Numeracal aperture 0.45 0.6 0.65 0.85
Max Accecptable Read Power 0.65mW 0.60mW 0.50mW 0.35mW
Track Pitch 1.60µm 0.74µm 0.40µm 0.32µm
min. pit length 850nm 400nm 204nm 149nm
Base Layer Thickness 1.2mm 0.6mm 0.6mm 1.1mm
Protective Layer Thickness N/A 0.6mm 0.6mm 0.1mm
total Disc thickness 1.2mm 1.2mm 1.2mm 1.2mm
Disc Diameter    120mm 120mm 120mm 120mm
Backward Compatable N/A YES YES YES
Forward Compatable NO NO YES YES
BC Complexity (hardware based) N/A Simple Simple Complex
FC Complexity (media based) N/A N/A Complex Simple
Manufacturing Time Per Disc/Layer 0.3sec 0.6sec 1.4sec 4.5sec
Manufacturing Equipment Existing Existing Existing New

Video Compression N/A MPEG-2 MPEG-2, MPEG-2,
      MPEG-4 AVC, MPEG-4 AVC,
      VC-1(WMV-9) VC-1(WMV-9)

Technology Partners N/A N/A Toshiba Sony
      NEC Apple
    Sanyo Dell
    Memory-Tech HP
      MS Hitachi
      LG
      Matsushita (Panasonic)
      Mitsubishi
      Philips
      Pioneer
      Samsung
      Sharp
      TDK
      Thomson

There seems to be a lot of confusion about the true differences between DVD HD-DVD and Blu-Ray so I've it up a whole ton of technical sites and created the comparison chart below... each format has it's benefits and pitfalls and I was sure to include the difference between what the formats are doing NOW in prototype form and what the format owner things they MIGHT be able to do over the next couple of years as the technology advances.

Some of the values I couldn't find but was able to calculate with the other information I had.

Please let me know if you find any inaccuracies and I'll be happy to update it

This post has been edited by twistedsymphony: Sep 30 2005, 09:34 PM

Reaper527 · « **Reply #1 on:** September 30, 2005, 02:18:00 PM »

QUOTE(twistedsymphony @ Sep 30 2005, 09:51 PM)

[code] CD DVD HD-DVD Blu-Ray
Disc Diamerter 120mm 120mm 120mm 120mm

Please let me know if you find any inaccuracies and I'll be happy to update it

not really an inaccuracy, but just though i would point out you had a typo on diameter

twistedsymphony · « **Reply #2 on:** September 30, 2005, 02:34:00 PM »

QUOTE(Reaper527 @ Sep 30 2005, 04:22 PM)

not really an inaccuracy, but just though i would point out you had a typo on diameter

thanks

TheProfessional · « **Reply #3 on:** September 30, 2005, 03:49:00 PM »

Thanks for the "cliffs notes" version. Very informative. Do you have any opinion on the war between Blu-Ray and HD DVD?

mgamer20o0 · « **Reply #4 on:** September 30, 2005, 04:22:00 PM »

sony is at it again. a few months ago when hd dvd and blu ray was going at it i read that they thought it was possible to get 7 layers. i read about the 100gb disk. come to find out they can only get two layers in a lab. all this talk about how blu ray had more room thats why its better. i never knew that they are having that much trouble and it will be a long time before a 2 layer blu ray dvd.

redwolf · « **Reply #5 on:** September 30, 2005, 04:58:00 PM »

good comparison

CattyKid · « **Reply #6 on:** September 30, 2005, 09:00:00 PM »

Ummm... the PsperDVD is Blue Ray.

Also, a quick little correction, max capacity for CDs is about 700mb.

And, also, what happenned to the 200gb Blue Ray Discs that they were talking about a while ago. Thought that was the max, but that was a WHILE ago, maybe 4 months. Guess they found it to be impractical/not possible?

Charbless · « **Reply #7 on:** October 01, 2005, 12:58:00 PM »

you can get cds that store 90min and 99min which have 800mb also a normal dvd 4.7gb is only 1 layer in that chart it seize its 2 layers which its only 2 layers if its over 4.7gb

Bogus8 · « **Reply #8 on:** October 01, 2005, 02:01:00 PM »

QUOTE(Charbless @ Oct 1 2005, 02:02 PM)

you can get cds that store 90min and 99min which have 800mb also a normal dvd 4.7gb is only 1 layer in that chart it seize its 2 layers which its only 2 layers if its over 4.7gb

What the waggle? We are talking about standards, not what *can* be done with some software and over burn blah blah blah... show some whitepapers saying this is manfacturing specs.

anyway the chart says "capacity per layer" 4.7 then when you look at max capacity it has the full 8.5. :rolleyes:

This post has been edited by Bogus8: Oct 1 2005, 09:03 PM

Charbless · « **Reply #9 on:** October 02, 2005, 08:18:00 AM »

Ok Mr smart ass if you want to go on about standards then really dvdr isnt 4.7gb do the maths so 8.5gb dual layer is wrong aswell then also standard cdr size now then is 702mb.

Owtlaw333 · « **Reply #10 on:** October 02, 2005, 10:56:00 AM »

QUOTE(Charbless @ Oct 2 2005, 06:22 AM)

Ok Mr smart ass if you want to go on about standards then really dvdr isnt 4.7gb do the maths so 8.5gb dual layer is wrong aswell then also standard cdr size now then is 702mb.

Those would be specifics... not standards. He was merely saying that a 800mb cd is not a standard in the indusrty. (Although neither was a 700mb when CD-R came out.... 650mb was what I remember... but that was consumer)

twistedsymphony · « **Reply #11 on:** October 02, 2005, 05:06:00 PM »

I'm going by white paper standards for PRESSED MEDIA

blank media doesn't factor into this...

Don't make me have to clean the flames out of my own thread...

If you disagree with what I've posed please post a link to some official paperwork that says otherwise and I will be more than happy to change it.

CattyKid · « **Reply #12 on:** October 02, 2005, 06:38:00 PM »

QUOTE(twistedsymphony @ Oct 2 2005, 07:17 PM)

I'm going by white paper standards for PRESSED MEDIA

blank media doesn't factor into this...
Don't make me have to clean the flames out of my own thread...

If you disagree with what I've posed please post a link to some official paperwork that says otherwise and I will be more than happy to change it.

Sorry. My bad, didn't think it was just for pressed media.

mastergwaha · « **Reply #13 on:** October 02, 2005, 11:06:00 PM »

i've also heard reports of toshiba trying to integrate a triple layer HD-DVD. sounds like fun!

joerehall · « **Reply #14 on:** October 03, 2005, 09:49:00 PM »

QUOTE(mastergwaha @ Oct 2 2005, 10:17 PM)

i've also heard reports of toshiba trying to integrate a triple layer HD-DVD. sounds like fun!

http://www.physorg.com/news4052.html
i really do hope hd-dvd wins the war.. right now they can do a triple layer disc that holds 45 gb and then on the other side it would be a normal single or dual layer dvd called a hybrid disc... that would make it possible for MS to release the 360 with a hddvd drive later on and release all games on a hybrid disc so either way you get the game be it on hd-dvd or dvd

Author Topic: Cd Vs Dvd Vs Hd-dvd Vs Blu-ray (Read 310 times)