Posts Tagged ‘analog television’

Two OLED technologies: AMOLED and PMOLED

OLED is a new technology that can make thin, efficient and bright displays. OLEDs are made from organic light-emitting materials, and OLEDs do not require any backlight and filtering systems that are used in LCDs. So OLEDs are more simple to make and actually can be made flexible and transparent as well. OLEDs are also very efficient, and companies are working towards OLED lighting – an OLED “lightbulb” will be efficient and thin, opening the way for great new lighting designs.

There are two types of OLEDs used in displays – PMOLED and AMOLED. The difference is in the driving electronics – it can be either Passive Matrix (PM) or Active Matrix (AM).

With Passive-Matrix OLEDs, the display is controlled by switching on rows and columns. When you turn on row number x and column number y, the pixel at the intersection is lit – and emits light. Each time you can choose just one pixel to light. So you have to turn these on and off very quickly. You do so in a certain sequence, and create the desired image. This is somewhat like the interlace-system used in old CRTs, but the control is done pixel-by-pixel.

PMOLEDs are very easy and cheap to build, but they are limited to small sizes (up to 3″, typically). The image displaying is a bit complicated (because of the row/column method). Also the power consumption is not as good as AMOLEDs.

AMOLEDs have a different driver electronics – each pixel is controlled directly. AMOLEDs are more expensive, and much more difficult to create, but can be used for larger displays (current prototypes are up to 40″) and are very power efficient.

The first OLED products in the market used PMOLEDs – these were MP3 players, sub-displays on cellphones and radio decks for automobiles. The displays were small and usually with just one or two colors. When AMOLED panels started to emerge in 2007 and 2008 we have seen these larger displays in mobile video players, digital cameras, mobile phones main displays and even OLED TVs.

PMOLEDs are still very popular – there are more MP3 player sold today with PMOLED than with LCDs. But for larger displays, AMOLED is the best technology, and is growing much more quickly than PMOLED displays. Obviously for larger displays, such as TV, laptop monitors or PDAs, AMOLED is the only choice.

Today there are several companies that are working on technologies that actually close the gap between PMOLEDs and AMOLEDs – offering a sort of hybrid system. The promise is that these displays will be both easy to make and allow power efficient larger displays. We still have to wait and see whether these technologies actually work on commercial displays. One such technology is Dialog’s SmartXtend.

Marine TV Antenna- Free Important Guidepost For Outdoor TV Antenna

As you devour this article, remember that the rest of it contains valuable information related to marine TV antenna and in some way related to satellite dish antenna, plasma TV, best antennas or extend antenna for your reading pleasure.

Wireless Antenna – First you need to decide what type of antenna you are going to use. If you are going to use a directional antenna then you will be able to tilt it downward if needed to cover you needed area. However, if you mount the antenna too high you will have a dead zone between the building and ceiling to the ground level. You will not want to tilt an omni directional antenna downward because you will be sending half of your signal up in the sky.

People have this perception that they need a more powerful HDTV antenna due to directivity and amplification. This is not true. HDTV is actually more noise immune than analog television and will be able to produce high quality video at significantly lower signal-to-noise ratios. Digital TV needs less antenna gain and can tolerate higher noise levels. A HDTV antenna and a regular antenna have similar directivity/gain properties so you should receive analog or digital broadcasts with the same good quality.

Using Orlando, Florida as a test area, Antenna Web suggests that a medium directional antenna will get you almost every digital signal in the area. The site is very useful and extremely customizable to take things like trees, the floor you live on and buildings that might be in the way into consideration.

Don’t forget to realize that this article can cover information related to marine TV antenna but can still leave some stones unturned. Head on over to the search engines like Ask Dot Com for more specific marine TV antenna information.

External wireless antennas can be used to find more networks to connect to, penetration testing, extending outdoor wireless networks, security testing for site surveys and over all just looking cool.

It does not matter which satellite radio provider you choose, the antenna should have a magnet on one end. This works great while attaching it to sheet metal on the external side of the vehicle. The sheet metal actually helps the reception by turning the whole vehicle into an extension of the antenna. The antenna uses the antenna currents of the vehicle to boost the reception power of the antenna.

An HDTV antenna is the ticket to receive free HDTV reception over the air. If you’ve decided to buy a HDTV, there is a low cost alternative to paying cable or satellite providers monthly for HDTV broadcasts, a simple HDTV antenna hookup is all that is required. You can receive a crystal clear high definition local and network broadcasts. All you need is an ATSC tuner built in your new HDTV or an external HD tuner connected to your HDTV to start getting free HDTV over the air. If you presently own a good VHF/UHF antenna for indoors or out doors you may be able to use it. Digital TV uses the same antennas as analog TV, manufacturers have been just labeled them HD to take advantage of the HDTV buzz.

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