From the New York Times
Technology
Toshiba Concedes Defeat in the DVD Battle
By MARTIN FACKLER
Published: February 20, 2008
The Japanese electronics giant threw in the towel on its HD DVD technology, announcing that it would no longer develop, produce or market disc players for the format.
In case you were wondering as I was, what is the difference this little FAQ helped me out. Here are the specs:
Parameters
| Blu-ray | HD-DVD |
| Storage capacity | 25GB (single-layer)
50GB (dual-layer)
| 15GB (single-layer)
30GB (dual-layer)
|
| Laser wavelength | 405nm (blue laser) | 405nm (blue laser) |
| Numerical aperture (NA) | 0.85 | 0.65 |
Disc diameter
Disc thickness
| 120mm
1.2mm
| 120mm
1.2mm
|
Protection layer
Hard coating
| 0.1mm
Yes
| 0.6mm
No
|
Track pitch
| 0.32µm | 0.40µm |
Data transfer rate (data)
Data transfer rate (video/audio)
| 36.0Mbps (1x)
54.0Mbps (1.5x)
| 36.55Mbps (1x)
36.55Mbps (1x)
|
Video resolution (max)
Video bit rate (max)
| 1920×1080 (1080p)
40.0Mbps
| 1920×1080 (1080p)
28.0Mbps
|
| Video codecs | MPEG-2
MPEG-4 AVC
SMPTE VC-1
| MPEG-2
MPEG-4 AVC
SMPTE VC-1
|
| Audio codecs | Linear PCM
Dolby Digital
Dolby Digital Plus
Dolby TrueHD
DTS Digital Surround
DTS-HD
| Linear PCM
Dolby Digital
Dolby Digital Plus
Dolby TrueHD
DTS Digital Surround
DTS-HD
|
Interactivity
| BD-J
| HDi
|
|