HD-DVD was a high-density optical disc format that was envisioned as the successor to DVD. It had a higher storage capacity than DVD, with single layer discs holding 15GB and dual layer discs holding 30GB. HD-DVD was principally developed by Toshiba, NEC, Sanyo, and Memory-tech corporation. However, HD-DVD was discontinued in 2008 after losing the high-definition format war to the competing Blu-ray Disc format.

1. HD-DVD

2. Topics to be discussed..
 Year of discovery
 What is HD-DVD?
 Developers of HD-DVD
 Data storage capacity
 How fast we can Read/write data?
 Technical Specification
 Products cost …
 Conclusion

3. Year of Discovery
 On March 31, 2006, Toshiba released their first consumer-based HD DVD
player in Japan.

4. What is HD-DVD?
 HD DVD (short for High Definition/Density Digital Versatile Disc) is a
discontinued high-density optical disc format for storing data
and high-definition video
 Supported principally by Toshiba, HD DVD was envisioned to be the
successor to the standard DVD format.
 Because all variants except 3× DVD and HD REC employed a blue
laser with a shorter wavelength, HD DVD stored about 3.2 times as
much data per layer as its predecessor
 Its main uses are for storing HD Videos.

5. Developers of HD-DVD
 TOSHIBA
 NEC
 SANYO
 Memory-tech corporation


6. Data Storage capacity
of a HD-DVD
 A single-layer disc can hold 15GB Data
 A dual-layer disc can hold 30 GB.
 A 51 GB triple-layer spec was approved at the DVD Forums 40th Steering
Committee Meeting (held on November 15, 2007)
 At the CES 2007, Ritek revealed their high definition optical disc process that
extended both competing high definition formats to ten layers, increasing
capacity to 150 GB for HD DVD.

7. How fast can we read/write data
on HD-DVD?
 Write speeds depend on drive speed, with a data rate of 36.55 Mbit/s (4.36 MB/s) and a
recording time of 56 minutes for 1× media, and 73 Mbit/s (8.71 MB/s) and a recording time of
28 minutes for 2×.
 The Toshiba SD-L902A for notebooks was one of the first available HD DVD writers, although
it was not meant for retail.Burning HD DVD (including Dual Layer) with a 1× write speed, it
could also burn DVDs and CDs.


8. Technical Specifications
DISC STRUCTURE
RECORDING SPEED
Physical size
Single layer
capacity
Dual layer
capacity
12 cm, single
sided
15 GB 30 GB
12 cm, double
sided
30 GB 60 GB
8 cm, single
sided
4.7 GB 9.4 GB
8 cm, double
sided
9.4 GB 18.8 GB
Drive
speed
Data rate
Write time for HD
DVD (minutes)
Mbit/s MB/s
Single
Layer
Dual
Layer
1× 36 4.5 56 110
2× 72 9 28 55
 MiB is Mebibyte
 1 MiB = 220 bytes = 1024 Kilobytes

9. Product cost
 On March 31, 2006, Toshiba released their first consumer-based HD DVD player in Japan at ¥110,000
(US$934).
 HD DVD was released in the United States on April 18, 2006 with players priced at $499 and $799.

10. Conclusions..
 High storage capacity.
 On February 19, 2008, Toshiba announced plans to discontinue development, marketing
and manufacturing of HD DVD players.
 Shipments of HD DVD machines to retailers were reduced and eventually stopped by the
end of March 2008.