The Technology Of DVD Media

A Digital Video Disc or DVD is one of the most popular forms of storage media nowadays. It is an optical disc and mainly used to store videos. However, data in any form can be stored on a DVD. The dimensions of a DVD are generally the same as a common compact disc but the amount of data that can be stored is six times greater.

The different variations of DVD are based on the way data is being stored on it. A DVD-ROM has pre-written data that can only be read. A DVD+R and DVD-R are the ones on which the data can be written only once; and on a DVD+RW the data can be written and erased more than once. The lasers used to read DVDs are typically of 650 nm wavelength.

The terms DVD-Audio and DVD-Video discs are DVDs with suitably structured and formatted audio and video content respectively. Other types of DVDs are called DVD-data discs. Read More »

Flippin Good Camcorder?

Here’s a quick heads-up on the next craze, probably… It’s called Flip Video, from Pure Digital and on the other side of the pond they’ve sold a million of them in the past few weeks. It’s a tiny pocket camcorder, around the size of a cellphone, so far so ordinary, but it has a couple of tricks up its sleeve. First it’s cheap, prices in the US start at around $99 or roughly £50. It has a built-in USB connector, so there’s no faffing around with cables, when you want to watch and download your videos to your Windows or Mac PC. Flip Video stores around an hour’s worth of video at quite reasonable quality, and you can upload directly to You Tube or edit the movie. Power comes from a couple of AA batteries and it has a built-in 1.5-inch display screen. Read More »

Mobile Notetaker Digitizes Your Analog Notes

The Mobile Notetaker attaches to the top of any pad of paper and digitizes your notes for download to a computer later (and translated to editable text). It can store up to 50 standard pages of notes or doodles, and costs $170. It’s aimed at solving the same problem of analog vs. digital notes that the FLY Fusion Pentop Computer is attempting. I need one, because I take really good notes at meetings with my boss. Okay, they’re more like drawings. Read More »