On 21 April 2010 18:16, tedd <tedd@xxxxxxxxxxxx> wrote: > Hi gang: > > I'm no expert on media, but the only difference between CD, DVD, Blu-Ray is > the amount of data they can hold, right? IOW, you can still record video, > audio, pictures, files, all digital data on all media - it's just that > Blu-Ray can hold more than DVD and DVD holds more than CD, isn't that right? > > Cheers, > > tedd > > > -- > ------- > http://sperling.com http://ancientstones.com http://earthstones.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > As mentioned, in terms of just data, then pretty much yes. Capacity is the key. But, CD, DVD and BlueRay really only describe the technology in the loosest of terms. CDs can be created in several formats: Audio CD / CD-DA / Red Book - This is what you put in your CD player to listen to music. Can also be extended to be CD-Text, CD+Graphics (CD+G), CD+Extended Graphics (CD+EG, CD+XG) Super Audio CD CD-MIDI CD-ROM Video CD (VCD) Super Video CD (SVCD) Photo CD (Kodak's format) CD-i (Philip's) Enhanced CD / CD Extra / CD Plus VinylDisc - This one is actually a CD on 1 side and the label has a vinyl track - can support upto 3 minutes of audio. Need a record player to listen to it. And that is JUST CD. DVD and BlueRay have their own standard and formats. So, even though the disks all look the same, each format limits/determines what it can contain, how it is organised and what the player has to be. http://en.wikipedia.org/wiki/Compact_disc http://en.wikipedia.org/wiki/DVD http://en.wikipedia.org/wiki/Blu-ray_Disc -- ----- Richard Quadling "Standing on the shoulders of some very clever giants!" EE : http://www.experts-exchange.com/M_248814.html EE4Free : http://www.experts-exchange.com/becomeAnExpert.jsp Zend Certified Engineer : http://zend.com/zce.php?c=ZEND002498&r=213474731 ZOPA : http://uk.zopa.com/member/RQuadling -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
