While true HD resolution is not yet possible on the small wide-screen
- defined as less than 19 inches with a 16:9 aspect ratio - there are a
number of portable TVs that simulate HDTV or actually receive HD
broadcasts either off the air or from a broadband source.
Definition of High Definition TV - What It Is and What It Isn't
To refine the definition a bit more, the portable high definition TV
[http://www.myhdpackage.com/hd-tv-buying-guide/portable-high-definition-tv]
must have either a self-contained power supply - batteries - or operate
from a standard 12VDC source of power, such as a car or a portable
external battery pack. In some cases, the portable HDTV is actually a
stand-alone external monitor with cable to attach to a video camera.
Portable High Definition TV for the UK Consumer
Portable TVs have been in decline for a while, due to a combination
of the conversion of analogue to digital transmission for over-the-air
broadcasts and the wide variety of portable DVD players in both 4:3 and
16:9 aspect ratios. The PAL scanning format - as opposed to the NTSC
format - also makes portable HDTV problematic because of the consumer
market being relatively small.
Tuners and Accessories for Portable High Definition TV
Many of the new generation of portable HDTV devices include options
for receiving broadcasts would-wide, either inbuilt DVD or provisions
for attachment and connection options for iPod and iPhone devices. There
are several that can decode HDTV, even if the realized image is limited
by the less-than-HDTV required 720 or 1040 by 1920 resolution.
Emerging Technology for Portable High Definition TV
The bright spot on the horizon is the emergence of the Organic LED
(OLED) technology, which has real promise of being able to deliver true
high definition in a portable or hand-held HDTV device. Wide screen
devices that are wearable - similar to sunglasses - will also benefit as
they suffer a bit from the lower resolutions in recreating the
impression of a 52-inch wide-screen in front of your eyes. The Digital
Video Broadcasting - Terrestrial standards have been enhanced by DVB-T2
which will encompass HDTV broadcasts. The specification is complete and
the physical layer is established; it is only a matter of time before it
trickles down to the mass markets.
Prices and Availability of Portable High Definition TV
The good news is that most portable HDTV devices range from below GBP 75 to £150.
Xoro HSD 7580 Portable High Definition TV
The Xoro 7580 8-inch packs a lot in a small but viewable space.
August 7-inch Portable HD TV
The August 7-inch has a lot of accessories and options
Lilliput 7" Portable High Definition TV
Lilliput makes one of the smallest units, with a 3-inch wide-screen 16:9
format. The Lilliput 918GL-90TV 9-inch costs less than £100 and has a
true 16:9 screen and options.
Portable High Definition TV Applications
The places a truly portable TV are useful are nearly endless. Keeping
the wee sprogs occupied and out of your knitting on long motor outings.
On boats, in kitchens, for emergency use and for showing the family
photos off a memory chip, to mention just a few. Prices are reasonable,
ranging from GBP 50 to £150
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