Digital light processing
We have heard about digital image processing. But have you heard about digital light processing? This technology may be a video technology owned, promoted and trademarked by Texas Instruments for video playback. DLP technology is employed in rear-projection HDTVs. Likewise as projector units. There are designs that use multiple DLP chips to feature extra resolution to the video image on the high end of front projectors.
One-chip DLP System
Like digital video camcorders, DLP devices are available in either one or three-chip models. One-chip DLP systems uses a projection lamp to pass white light through a color chart that sends red-green-blue colors to the DMD contribute a successive order to make a picture on-screen. Just one DMD chip is employed to process the primary RGB colors.
Like digital video camcorders, DLP devices are obtainable in either one or three-chip models. One-chip DLP systems uses a projection lamp to pass white light through a chart that sends red-green-blue colors to the DMD contribute a sequential order to create an image on-screen. Only one DMD chip is utilized to process the primary RGB colors.
DLP technology uses micro-mirrors the means an LCD use pixels to replicate color and light. The resolution of the DLP HDTV is directly associated with the number of mirrors that may have light reflected from them. By the movement of the mirrors, the DLP device and make colors and shades of gray that compose a video image.
Most customers can only be ready to purchase a one-chip DLP system, however that isn’t a bad since DLP technology is recognized for its ability to show images in great detail. 3-chip DLP systems are for high end users who need to show images onto a bigger screen; like in a theatre or for a business seminar setting.
DLP technology relies on an optical semiconductor, known as a Digital Micro mirror Device (DMD) that uses mirrors made from aluminum to reflect light to form the image. The DMD is usually referred to as the DLP chip. The chip may be held within the palm of your hand; however it will contain over 2 million mirrors each, measuring but one-fifth the dimension of a human hair.
DLP show technology digitally manipulates (or processes) light to provide film-like, all-digital pictures. DLP integrates a projection lamp and an electronic video signal from a source like a VCR or computer. And also the processed light produces an all-digital image.
Digital Micro Mirror Device
The key to this full digital process is that the Digital micro mirror Device (DMD), a thumbnail-size semiconductor light switch. The DMD contains an array of thousands of microscopic-size mirrors, each mounted on a hinge structure so it will be separately tilted back and forth. When a projection lens and a lamp are positioned within the right places in the system. Also DLP processes the input video signal and tilts the mirrors to get a digital image.
Some DLP devices have currently replaced the projection lamp and color wheel with a light emitting diode (LED). Rather than passing light through a color wheel, DLP LED technology uses red, green, and blue illuminated lights. With up to 48 times more color rotation than normal DLP units, LED produces more accurate colors, bigger color saturation, and a wider color palette. By minimizing stray light, LEDs also increase contrast for higher clarity of detail. Faster pixel switching speeds leave more precise copy of action, and also the consistency of image quality is usually higher.0