New CD-R , Holds Up To 1.3 GB !!!

[TheGamemmuuhh]

Has anyone seen this new Sony CD-R 1.3 GB cd? Its on sonystyle.com Just one is $1.99. Do this hold just Data or can it hold Mpg, Divx avi, etc... files also???

[aldus4]

The problem is

- you need a special DD (double density) CD drive to play these on.

- you need a special DD burner to burn on these

- once you have used the DD format to burn something, you cannot use them in other equipment apart for those designed for DDCD's, meaning the DDCD will not play in your DVD Player etc.

- as they are backward compatible you can use DDCD's as normal CD's of 650MB - but what's the point when you have 700MB and 845MB CD-R's?

<font size=-1>[ This Message was edited by: aldus4 on 2001-08-03 13:50:09 ]</font>

[JOHNinLBC]

There at FRY'S ELECTRONICS But like ALDUS4 said they need there on DD BURENER. $1.50 a each.

[Greg12]

Curious, but what r the requirements to read DDCD?


Is it possible to release firmware for support on normal DVD players?

[aldus4]

Firmware would be no good for old CD players to read these new DDCD's as you need a total different sort of hardware.
Here the specifications of DDCD vs. CD

--- Double Density CD --- Conventional CD

Data Capacity--- 1.3GB (2048B/sector)--- 650MB (2048B/sector)
Wavelength--- 780nm --- 780nm
Objective Lens
Playback:--- NA=0.50 --- NA=0.45
Record/Playback:--- NA=0.55 --- NA=0.50
Disk Size--- Diameter: 120mm --- Diameter: 120mm
Thickness:--- 1.2mm --- 1.2mm
Track Pitch--- 1.1 um --- 1.6 um
Min. Pit Length--- 0.623 um --- 0.833 um
Scanning Velocity--- 0.90 m/s --- 1.2 - 1.4 m/s
Error Correction--- CIRC7 --- CIRC
Modulation--- EFM --- EFM

If you want to know more details checkout this website
http://www.cdrinfo.com/articles/doublecd/index.shtml


<font size=-1>[ This Message was edited by: aldus4 on 2001-08-03 20:24:12 ]</font>