 250 GB though this is steadily increasing over time. Portable Entertainment Systems This brings us to portable entertainment systems, lap tops marketed as entertainment centres rather than business aids. The Vaio F Series is an example of a high-end product from Sony with 750 GB of hard disk memory or a 256 GB flash drive. It is one of the first lap tops capable of showing 3D graphics and converting HD content to 3D with support for active (powered as opposed to passive) 3D glasses via a Bluetooth connection. The LCD-equipped lenses pass different images to each eye in succession (alternate-frame sequencing). Each lens can be made transparent or completely opaque by varying the amount of electric voltage sent to the glass. The LCDs are synchronised with the screen's 240 Hz refresh rate. When running in 3D mode, the display inserts a black screen before it draws the scene for the subsequent eye. To make sure that this black is truly black, the panel's LED backlight goes dark The device includes an 802.11b/g/n WiFi transceiver with integrated 3G Mobile Broadband connectivity in some markets (Verizon in the US for example). It would seem obvious to throw in a DVB T2 and ATSC demodulator for terrestrial broad- casting reception but frustratingly flux densities are not adequate to make this an acceptable technical and commercial proposition, a topic to which we return in Chapter 15. Additionally, the power drain and associated duty cycle of these devices can be problematic with some user forums complaining of duty cycles of less than an hour. Just make sure you are never too far away from a mains socket. This caveat aside, these devices and smart TVs as well are natural hosts for user-generated HD content captured from high-end smart phones and transferred via a high-definition Operator Tu 27/04/10 General Sarah Goldberg It will be OVI mail (5) amazing! Found great new apps from Ovi Store 20 mins ago Discovered a cool place with Ovi Maps Tiger Trade Slashes Cats' Numbers Gorillaz - On Melancholy Hill April 27, Nat Ge