darkwing_duck1
Vice Admiral
Well, "always" is a dangerous thing to say.Basically, Blu-Ray is and may always be the premium product, while DVD is and will continue to be the unleaded edition.
Once upon a time, there were "premium pressings" and "mass-market pressings" on vinyl records. And REAL audiophiles could actually buy dubs onto reel-to-reel tape.
When cassettes were all the rage, you had "regular tapes," but you could also get your tapes on Chromium Oxide, or even better, "Metal" tape, which was far more pricey but gave much better sound.
CDs came out, and it was a holy war between those who argued that you'd lose some elements of the music (which is true, but almost entirely in ranges which are undetectable by mere mortal humans) and those who claimed that CDs were literally unbreakable and "permanent."
VHS and Beta... I'm sure some of us remember that. Beta was better, but VHS was cheaper to produce.
Anyone still have some laserdiscs?
Everytime one of these came along, it was going to be that way "forever." Most of them aren't even able to be played anymore. God help you if you invested in 8-track...
I fully expect blu-ray to be the "standard" within two years, and conventional DVD to be entirely phased out. The good thing is that this won't invalidate your existing library... you can still play DVDs on blu-ray players, and you can still play CDs on blu-ray players for that matter.
The whole point of blu-ray is very simple... you have a different frequency of laser, which permits reading (and, in some cases, writing) of data at much finer resolutions than the traditional "red laser" used in CD and DVD players. This frequency is, of course, in the "blue" color range, hence the name of the techology. ("High Definition DVD" was also a blue-laser technology, by the way... the difference was mainly in terms of how the disks are manufactured and how data is arranged on the disk.)
So, they crammed more data onto a disk using a blue laser rather than a red laser. This also required more precise bearings, a more accurate stepper motor for moving the read (or read/write) laser head in and out, and a more accurate servo motor for spinning the disk.
Every time somebody increases the storage limit, it takes very little time before it becomes commonplace to use that storage fully. Remember when "nobody will ever be able to fill up a 250MB hard drive?" Remember when a 1GB hard drive was considered "overkill?" I do.
So, I have no doubt that research will continue... more accurate spindle systems will be developed, and the wavelength of the laser will continue to be shrunk until the laser is well out of the range of visible light entirely. And I would be shocked if it took another five years before we see the next technology emerge (although it won't be ADOPTED as mainstream for a little while longer).
At some point someone's going to have to break the "disk" cycle, however. And flash memory isn't ever going to do it... it's simply not acceptable as an archival storage method. I suspect that the ongoing (with limited success) research into 3D-data-matrix "holographic memory" will be the inevitable next step. Can't picture it? Think of the glass blocks from the HAL core in 2001...
Tell the whole story. There's also the issue of buying a player that has to constantly have it's software "updated", making necessary some sort of Net conncection, and allowing the code source to monitor your box, and even shut it down.