14th September 2007 - 09:40 AM
SD cards look to me like a pretty good standard for flash cards. Companies have always introduced new "standards" in this field, which just made everything harder for the consumer. Adding yet another one won"t solve it, unless *everyone* is backing it up, which is already mostly true for SD, which is why I don"t see a reason to replace it.
And I don"t understand the comment about the 3-minute access time to a movie.
15th September 2007 - 07:23 AM
Assuming the highest speed SD card at 20 MB/sec (133x CDROM) , in three minutes we can transfer a 180X20 = 3.6 GB movie.
I don't know what actually limits the SD speed (and I don't think you care either).
The new media would be, lets say 10X faster, so would transfer in 18 seconds at a rate of 160 MB/s (bytes), (which is almost 3X faster than the high speed USB, which seems to make it less useful).
(50-50 that I made a friday night math error above)
Anyway, none of that matters if you are streaming the compressed movie from the card in real time. It only matters if you want to bulk transfer the data from a card to a computer or player.
Faster cards mean faster uncompressed real time frames per second for cameras (video and still) and higher possible resolution at higher FPS. The bulk transfer time, which they mention, is a feature, but IMHO, not very important.
Does that help?