480i, 480p, 720p, 1080i and 1080p what does it all mean?
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Standard Tv from the days of black and white to the gift color images we watch every day on television are made up of a series of still images displayed at 60 frames a second in the Us and 50 frames a second in Europe. These still images consist of private lines of information that move from left to right over the screen followed by more lines inspiring down the screen. With a Cathode Ray Tube (Crt) that most older Tvs' use for the display, the flat exterior that you look at is coated on the inside with phosphor dots or rectangles. A beam of electrons is aimed at the dots or rectangles causing them to glow. With a thorough definition Tv there are 480 of these lines and 640 sets of dots or rectangles on each line. Each set of dots or rectangles consist of three color dots (Red Blue and Green) and the power or intensity of the electron beam determines how inspiring each color will be. There are undoubtedly three beams inspiring together over the face of the screen, each changing in intensity as they cross the phosphor dots or rectangles.
Video Tvs
Interlaced (i) or Progressive (p)?
What is Your Tv Resolution?
Ultra High Performance HDMI Switcher, 3to1 Switch Best
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Ultra High Performance HDMI Switcher, 3to1 Switch Feature
- HDMI Switch, HDMI SWITCHER, HDMI 3 In 1 Out Switch, HDMI 3 In 1 Out Switcher,
- HDMI 3 Port Out Switch, HDMI Switch 3D
- Does not require external power supply when connected to standard HDMI devices
- *package does not includes a power
Ultra High Performance HDMI Switcher, 3to1 Switch Overview
HDMI 3 Ports Switch with Remote (3X1). This is a kind of high performance mini HDMI Switcher. It is compatible well for HD-DVD, STV,PS3, Xbox36etc. The multiple resolutions is can be up to 1080p. This kind of the HDMI Amplifier Switcher not only has the key-press-switching function, but also has the IR remote control and intelligent function.That is to say, as soon as the power supply of the source equipment is switched ,this switcher will respond automatically. The 3x1 HDMI Switcher routes high definition video (in multiple resolutions up to 1080p)and digital audio from any one of the two sources to display unit. Two inputs accommodate the simultaneous connection of up to two high definition video sources, such as satellite systems and HD DVD players. The output sends the high definition audio/video signals to a high definition display. Switching is done via it self automatically when signal present on the ports. FEATURES: IR remote (included); IR extender receiver (included) ; Support HDMI 1.3b; Full HD 1080P High Performance up to 2.5Gbps ; Supports 25Meters HDMI Cable on both ends of the Switcher Switch easily between any two HDMI sources automatically. Maintains high resolution video - beautiful, sharp HDTV resolutions up to 1080p, 2k, 1440p graphics and computer resolutions up to 1920 x 1200 are easily achieved; Up to 24 bit color depth. Up to DTS Master Audio and Dolby Digital TrueHD support; HDMI pass-through; HDCP pass-through; Compatible with HDMI1.3 devices;No external power needed. SPECIFICATIONS: operating temperature range0 to +70? Operating humidity range5 to 90 % RH (no condensation)Video Amplifier Bandwidth2.5Gbps/250MHz; Input Video Signal0.5-1.0 volts p-p; Input DDC Signal5 volts p-p (TTL)Maximum Single Link Range1920 x
Customer Reviews
*** Product Information and Prices Stored: Feb 24, 2012 22:57:59
In order to sell out the bandwidth, normal Tv signals only send 30/25 frames a second to the receiver made up of only 240 lines of information. If that were all we saw on the screen it would look like the old flickering movies. Within the Tv set the signal is processed and sent twice to the Crt, the odd numbered lines are scanned and then the even numbered lines are scanned with the same image. This is referred to as an interlaced image and eliminates the flicker. However the true vertical resolution is only 240.
With a progressive image, 60/50 frames a second are sent to the receiver and all of the lines are scanned once for each frame and providing twice the information as the interlaced image with the same screen. However this requires twice the bandwidth. Keep in mind that non-digital over the air is only 240 lines of former information, you can use a line doubler or scaler to increase the amount of lines, but it will never be as sharp as the former image.
Horizontal resolution is much simpler, it is basically just the amount of dots, rectangles or pixels over the width of your screen. For example thorough definition Tv is 640 X 480, the horizontal resolution is 640 for both interlaced and progressive.
Standard Definition Dvd Full Screen and Wide screen
With the introduction of Dvds' the horizontal resolution was increased from 640 to 720 to show the wider images of the former movies. Displays with a resolution of "720 X 480 " could show these movies using the full screen width, However when viewing thorough Tv images, the population are slightly fatter.
Enhanced Definition Tv
This format uses progressive scan and an even wider image for "854 X 480" and though is much best than thorough Tv it still does not come close to High Definition Tv. thorough Tv normally have a black bar on each side as the population would look weird being so fat.
720p High Definition Tv
This format was a big step forward, However when viewing regular Tv, you were still stuck back in the old format of "640 X 480". 720P displays have a resolution of "1280 x 720" and use progressive scan for a very sharp image. Scalers and converters are used to boost the ability of the Tv images to match the screen. For Analog signals, Component video tool and cables are a minimum requirement. Video and S-Video will not work. The Tv set may accept Video and S-Video, but will not take benefit of the full resolution, displaying a smaller image or straight through processing in the Tv supply a larger image though not as sharp.
The Government steps in with 720p and 1080i high Definition Tv Standards
On February 17, 2009, television stations will stop all analog broadcasts and only broadcast digitally. Older analog Tvs will require converter boxes to receive over the air programming. Cable or satellite aid will not be affected. There are two formats that will be used by the distinct stations.
The 720p format makes a photograph with 720 vertical lines, each with 1280 pixels horizontally or a resolution of "1280 x 720". 720p uses progressive scanning, like computers, which sends a unblemished photograph 60 times per second. 720p provides the smoothest inherent request for retrial rendition, but it does not have as much resolution as 1080i.
The 1080i format makes a photograph with 1080 vertical lines, each with 1920 pixels horizontally or a resolution of "1920 x 1080". 1080i uses interlaced scanning, like former Tv, which alternates sending odd lines and even lines and thus sends a unblemished photograph 30 times per second. 1080i provides the highest inherent resolution, but has the same request for retrial rendition as former Tv.
1080p High Definition Dvd
Your next Dvd player will most likely be able to play 50 Gbyte Dvd's that will use an High Definition Multimedia Interface (Hdmi) that will also supply up to 7 channels of high definition audio along with the 1080p image. This is fast becoming the thorough for Dvd movies in the same way that Dvd supplanted Vcr tapes a few years ago.
To view these movies you will need an Hdtv display with Hdmi inputs and a Dvd player capable of playing the new format with Hdmi output. You will also need extra Hdmi cables to connect the two. Your cable or satellite supplier will also use Hdmi connections so you will need at least two Hdmi connectors on your display device.
There are some drawbacks to the current models of High Definition Dvd players. High- bandwidth Digital article security (Hdcp), creates a slow down when beginning a movie, you may think that you have a problem with your Dvd. The player is just talking to the display expedient to make sure that they are both licenced properly. Unless you are viewing the Dvd on a 42 inch or larger screen you will have a hard time telling the discrepancy between 720p and 1080p.
Broadband what does it mean?
You may be using broadband now and not even comprehend it. How often do you agree an online movie from your local cable or dish company? Have you noticed how many high definition features are now being offered? As the selections become larger, watching streaming article will become so tasteless that we will gradually forget about our Dvd players. 720p is very tasteless and soon 1080p will also be available. The security for the movie producers is already there as the high definition boxes use Hdmi with Hdcp for the high definition outputs.
Organic Light Emitting Diode (Oled) Tv's
Then comes the Oled's, we are already using them on the new cell phones and laptops. The first Oled television was introduced in 2008. As examine for larger displays increases and the pipeline that is now full of plasma and Lcd screen began to empty we will hear more and more about the color ability of the Oled's. For a few years the resolution of the displays will remain about the same and the sales pitch will be all about the colors. But keep in mind that there is no limit the size of the screen with Oled and it is also flexible. The flexibly will allow for easer handling and installation.
As the size of the screen increases a examine for greater resolution will start all over again. And with the flexibly comes the possibility of 360 degree wrap-a-round screens. Remember that the horizontal resolution is much easer regain than the vertical so a resolution of 16000(or greater) X 1080p is not out of the question. 360 degree movies are not new, Disney World has had one in operation in Orlando for years. You stand in the town in a large group and turn around to corollary the action. A few spinning recliners and the screen raised a few feet and away you go.
What is Your Tv Resolution?Craig Ferguson 11/30/9D Late Late show Michael Sheen Tube. Duration : 9.77 Mins.
Tags: Craig, Ferguson, Michael, Sheen
