Sony DVD Rom/DVD Video manual MiniDVD

Compared to the DVD 9, the additional capacity of the DVD 10 is about 900 MegaByte (just a little more than the capacity of one CD) but the disadvantages may increase, depending on your application.

One reasonable application may have the same content on Side A and on Side B but in different formats, like one in PAL (Phase Alteration Line) and one in NTSC (National Television Systems Committee).

From the production’s point of view, the DVD 10 is very similar to the DVD 5, with the only difference being that both discs do contain data and they are adhered back to back. Both reflective layers are made of aluminum.

1.5DVD 18

This ”Dual Layer Dual Side” Digital Versatile Disc (DVD) has a maximum data capacity of about 17,1 GigaByte. This is exactly twice the capacity of a DVD 9.

DVD 18 • 17 GigaByte • Double Side/Dual Layer

The stampers are made during the same process as the DVD 5. After the polycarbonate discs have been produced in the die-casting machines, the first layer has been built up by the polycarbonate. This layer is sputtered with silicon (like it was with the DVD 9 for the first layer with approximately 20% reflection). Then a special developed liquid UV resin is applied onto the silicon layer. Then another stamper containing the pit pattern (information) for the second layer is pressed onto the applied liquid. After the liquid resin has dried, Aluminum is sputtered onto this information-layer and a special adhesive is applied, which glues two similar fabricated discs together. Finally, there are four layers of information and roughly 17,1 GigaByte of data. Since the DVD 18 has little application, Sony DADC does not offer this niche-product.

1.6MiniDVD

The MiniDVD is the small DVD for the big ideas. Compared to normal DVDs (diameter of 12 cm), this DVD has a diameter of only 8 cm. There are two diffe- rent kinds of MiniDVD: The ”Single Layer Single Side” DVD which holds approximately 40 minutes of film (1.46

1. General

2nd side/1st layer

0.6mm

0.6mm

1st side/1st layer

2nd side/2nd layer

1st side/2nd layer

GigaByte) and the ”Dual Layer Single Side” DVD with approximately 75 minutes of film-material (2.66 Giga- Byte).

The picture above shows the principal structure of a DVD 18. As it can be seen, there are two layers per side, one semi-reflective and one fully reflective similar to the DVD 9.

In terms of handling, this kind of DVD does have the same disadvantages as the DVD 10. Due to the fact that only a few players in the market have the capability to read from both sides, it is very inconvenient for users to turn the DVD over while the movie or programm is running. In addition to this inconvenience it is also not possible to use any side of the DVD for large prints since the laser reads from both sides (for further infor- mation please see chapter 4 of this document).

From the production point of view, the DVD 18 is the most complicated disc.

This MiniDVD is the ”little sister” of the conventional DVD. With the main difference being its smaller size, it is much more convenient to send via the post and the- refore the ideal ”transport-media” for promotion mate- rial such as corporate videos, multimedia presentations, film trailers and more. It has roughly twice the capacity of a CD-Rom but being much lighter and more attrac- tive through the special appearance.

Therefore the MiniDVD is the real product for Promotions and Company Presentations.

From the production point of view, there is not a big difference to the 12 cm DVDs apart from the different diameter.

11