Consider three different raster systems with resolutions of 640 by 480, 1280 by 1024, and 2560 by 2048. What size frame buffer (in bytes is needed for each of these systems to store 12 bits per pixel? How, much storage: is required for each system if 24 bits per pixel are to be stored?
Suppose an RGB raster system is to be designed using an 8-inch by 10-inch screen with a resolution of 100 pixels per inch in each direction. If we want to store 6 bits per pixel in the frame buffer, how much storage (in bytes) do we need for the frame buffer?
Consider two raster systems with resolutions of 640 by 480 and 1280 by 1024. How many pixels could be accessed per second in each of these systems by a display controller that refreshes the screen at a rate of 60 frames per second? What is the access time per pixel in each system?
A widescreen image is a film, computer, or television image with a width-to-height aspect ratio greater than the standard 1.37:1 Academy aspect ratio provided by 35mm film. Screen Aspect Ratio is basically a measure of the horizontal length of a television (or film) screen, in relation to its vertical height. In other words, a traditional television has a Screen Aspect Ratio of 4x3. This means that a traditional television has a screen that is four units long for every three units in height. Converting these units into inches would result in measurements of 4-inches by 3-inches or 8-inches by 6-inches, and on-and-on.
By the same token, on widescreen television (such as today's HDTVs), the Screen Aspect Ratio is 16 units long for every 9 units in height, or 16-inches by 9-inches, 32-inches by 18-inches, etc... A 16x9 screen aspect ratio thus results in a wider image display that a 4x3 aspect ratio. This wider image display allows both movies originally filmed in widescreen and new, widescreen television programming, to be displayed more accurately.
BARCO’s LC series of High-Resolution LCD displays has been specifically designed for use in a wide variety of professional applications. The LC family presents crisp, clear and color-accurate images on 42", 47" and 56" screen sizes. Dedicated versions with HD-SDI inputs are available.
Featuring some of the most advanced LCD technology available today, BARCO’s LC series stands for the ultimate in detail. The LC series consists of a 42" and 47" display in native full high definition (1920x1080 pixels) and a 56" display in quad full high definition (3840x2160 pixels).
Flat panel plasma display is the latest display technology and the best way to achieve displays with excellent image quality and large, flat screen sizes that are easily viewable in any environment. Plasma panels are an array of cells, known as pixels, which are composed of three sub pixels, corresponding to the colors red, green, and blue. Gas in the plasma state is used to react with phosphors in each sub pixel to produce colored light (red, green, or blue). These phosphors are the same types used in cathode ray tube (CRT) devices such as televisions and standard computer monitors. You get the rich dynamic colors that you expect. Each sub pixel is individually controlled by advanced electronics to produce over 16 million different colors. All of this means that you get perfect images that are easily viewable in a display that is less than six inches thick.
LED technology:
There are many consumer advantages to LEDs over incandescent or fluorescent light bulbs. LED lights consume much less energy. They are 300 percent more efficient than a compact fluorescent light (CFL), and 1,000 percent more efficient than an incandescent bulb. They have a very long life, about 50,000 hours of use at 70 percent of their original power. (LEDs don't burn out or flicker, they simply fade.) This works out to eight hours a day for 13 years at 70 percent power. A typical 60-watt incandescent bulb may last about 1,000 hours.
LED lighting contains no mercury or other toxins. LEDs emit no ultra violet (UV) light, so they don't attract bugs. They don't generate heat, so they are cool to the touch. They don't generate radio frequency waves, so they don't interfere with radios or television broadcasts. They also are resistant to vibrations and shocks.
CRT (cathode ray tube):
The Cathode Ray Tube (CRT) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron beam, used to create images in the form of light emitted from the fluorescent screen. The image may represent electrical waveforms (oscilloscope), pictures (television, computer monitor), radar targets and others. The CRT uses an evacuated glass envelope which is large, deep, heavy, and relatively fragile.
LCD (Liquid-crystal display):
Liquid-crystal display televisions (LCD TV) are television sets that use LCD technology to produce images. LCD televisions are thinner and lighter than CRTs of similar display size, and are available in much larger sizes. This combination of features made LCDs more practical than CRTs for many roles, and as manufacturing costs fell, their eventual dominance of the television market was all but guaranteed.
In 2007, LCD televisions surpassed sales of CRT-based televisions worldwide for the first time, and their sales figures relative to other technologies are accelerating. LCD TVs are quickly displacing the only major competitors in the large-screen market, the plasma display panel and rear-projection television. LCDs are, by far, the most widely produced and sold television technology today, pushing all other technologies into niche roles.
Benefits of the Widescreen
When used for entertainment, a widescreen display is in its element when showing widescreen DVD movies in their intended 16:9 aspect ratio. This means a bigger picture more comfort and less wasted space (less or no black bands on either side of the picture).
The widescreen display also makes it easier to edit and view panoramic images and may eliminate troublesome horizontal scrolling altogether.
Another benefit of the widescreen display is evident when it comes to serious work â€" the ability to display two windows side by side and to drag and drop (or copy n’ paste) data without having to switch between them is priceless.
