CD vs DVD vs Blu-Ray BD vs HD-DVD

Optical Date Storage Comparision
	CD	DVD	Blu-Ray (BD)	HD-DVD	EVI	FMD	HDS (Holographic Data Storage)
Inveted In (Release Year)	1982	1996	2002	2003			2002 (Started)
Inventors	Sony and Philips	Sony, Philips, Toshiba & Warner	Sony, Philips, Hitachi, LG, Matsushita, Pioneer, Samsung, Sharp, Thomson, and Mitsubishi	Thoshiba and NEC			In-phase
Diameter	12 cm (4.7")	12 cm (4.7")	12 cm (4.7")	12 cm (4.7")	12 cm (4.7")	12 cm (4.7")	12.7 cm (5.0")
Thickness	1.1 + 0.1	0.6 + 0.6	0.1 + 1.1	0.6 + 0.6	1.2 mm	1.2 mm	1.2 mm
# of Layes (Standard)	1	2	2	2
# of Layes (Posible)	1	2	8	2
Capacity / Layer	650 MB (700 MB)	4.7 GB	23.4 GB / 25 GB / 27 GB	15 GB			200 GB (As of right now)
Total Capacity (Double sided)	650 MB / 700 MB	8.5 GB (17 GB)	200 GB	30 GB (60 GB)			1 TB (Projected)
Rotation Speed Inner	500 rpm	1600 rpm	1955 rpm
Rotation Speed Outer	200 rpm	570 rpm	821 rpm
Cartiridge Required	No	No	No (when release in 2005/2006)	No
Number of Sides posible	1	2	1	2
Track pitch in microns	1.6	0.74	0.32	0.40
Min pit length in microns	0.83	0.4 / 0.44	0.16, 0.149, 0.138	0.204
Wavelength	780	635/650	405	405
Numerical apeture	0.45	0.6	0.85	0.65
Actual raw data rate (Mb/s)	4.3218	11.08	36 (54 Video BD-ROM)	36.5
User data rate (Mb /s)	1.4	11.08	36	36
Storage Density (Gb/Inch^2)	0.41	2.77	14.73

I wrote this table just for my interest. Now I am publishing because someone like me don't have to go any furthure. I wrote as many information as I have found through the various reliable sources.

For the next generation I am favoring Blu-ray. There are many reasons for that but the primary reason is that it provides a whole lot of storage space with possibility to increse it. There are many other futures I like and they are:

BD provides more storage than HD-DVD
BD will have more interactive futures then HD-DVD
BD will benefit customor while HD-DVD will benefit manufacturer
Naked BD will be hard coted to protect it from scaches and finger prints
All form (ROM, -R, -RE (In BD -RW is called -RE)) of BD has same storage capacity while in HD-DVD -R wont be available in dual layer and it's capacity is less than ROM and -RW will be available but it's capacity might be differant than ROM.
BD first developed -RE and then -R and ROM while HD-DVD first developed ROM than -R and then -RW
There is posibility of 200GB BD while HD-DVD is go up-to only 60GB by it's nature and can't grow any further
BD does NOT inharit problems of DVD (Both BD and HD-DVD has their own problem but HD-DVD does inharit problems of DVD and adds its own)
BD for camcoder will be available for sure and might come out early. HD-DVD has not started working on camcoder specification.
When BD comes out you won't have only ROM format but you will be record your own BDs too. While HD-DVD might not release -R and -RW format early just for Hollywood.
BD will saty here no matter what happen because of Play Station-3 and some other game venders across the world
BTW if you are thinking that HD-DVD will be able to read your CDs and DVDs then BD will too
BD's computer drive will be available before than HD-DVD's

Some Links...

2004-Xxx-00 Blu-ray - a Whatis.com definition
2004-Xxx-00 Howstuffworks "Blu-ray vs. HD-DVD"
2004-Xxx-00 Howstuffworks "How Blu-ray Discs Work"
2004-Oct-22 Gizmodo : Blu-Ray Has Already Won
2004-Dec-08 HD-DVD Must Die - Sony's Blu-ray is the better next-generation DVD. By Paul Boutin
2004-Dec-14 HD-DVD vs. Blu-ray: who cares?: Commentary / Opinion
2005-Feb-06 HD-DVD versus Blu-ray Disc (BD)
2005-Feb-20 Format wars redux: Blu-ray disc vs. HD-DVD - Computerworld
2005-Mar-05 HD-DVD and Blu-ray: Do you know the difference?
The latest news on HD-DVD and Blu-Ray
Blu-Ray Disc Statistics
HD-DVD Statistics

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