misspelledsearch.com:

dlp television

information page

If you cannot find the information you are searching for on this page, we suggest searching Google with the correct spelling "dlp television":

For political parties using this acronym, see Democratic Labour Party.

Digital Light Processing (DLP) is a technology used in projectors and video projectors. DLP was originally developed by Texas Instruments, and it remains the primary manufacturer of such technology, which is used by many licensees who market products based on T.I.'s chipsets. The Fraunhofer Institute of Dresden, Germany, also manufactures Digital Light Processors, termed Spatial Light Modulators, for use in specialized applications. For example, Micronic Laser Systems of Sweden utilizes Fraunhofer's SLMs to generate deep-ultraviolet imaging in its Sigma line of silicon mask lithography writers.

In DLP projectors, the image is created by microscopically small mirrors laid out in a matrix on a semiconductor chip, known as a Digital Micromirror Device (DMD). Each mirror represents one pixel in the projected image. The number of mirrors corresponds to the resolution of the projected image: 800×600, 1024×768, 1280×720, and 1920 x 1080 (HDTV) matrices are some common DMD sizes. These mirrors can be repositioned rapidly to reflect light either through the lens or on to a heatsink (called a light dump in Barco terminology).

The rapid repositioning of the mirrors (essentially switching between 'on' and 'off') allows the DMD to vary the intensity of the light being reflected out through the lens, creating shades of grey in addition to white (mirror in 'on' position), and black (mirror in 'off' position). There are two primary methods by which DLP projection systems create a color image, those utilized by single-chip DLP projectors, and those used by three-chip projectors.

Single-chip projectors

In a projector with a single DMD chip, colors are produced by placing a color wheel between the lamp and the DMD where it is reflected out through the optics. The color wheel is usually divided into four sectors: the primary colors: red, green, and blue, and an additional clear section to boost brightness. Since the clear sector reduces color saturation, in some models it may be effectively disabled, and in others it is omitted altogether.

The DMD chip is synchronized with the rotating motion of the color wheel so that the green component is displayed on the DMD when the green section of the color wheel is in front of the lamp. The same is true for the red and blue sections. The red, green, and blue images are thus displayed sequentially at a sufficiently high rate that the observer sees the composite "full color" image. In early models, this was one rotation per frame. Later models spin the wheel at two or three times the frame rate, and some also repeat the color pattern twice around the wheel, meaning the sequence may be repeated up to six times per frame.

The DLP "Rainbow Effect"

This visual artifact is best described as brief flashes of perceived red, blue, and green "shadows" observed most often when the projected content features bright/white objects on a mostly dark/black background (the scrolling end credits of many movies being a common example). Some people perceive these rainbow artifacts all of the time, while others say they only see them when they let their eyes pan across the image. Yet others do not notice the artifact at all. The effect is likely rooted in the concept of the flicker fusion threshold.

The image to the right shows how a white circle looks to a camera while panning horizontally, using a long exposure. The white light is visibly split into its colored components. The rainbow effect occurs when this is visible to the naked eye. The multiple images of the circle represent the individual frames of video, and are unrelated to the rainbow effect.

The "Rainbow Effect" is unique to single chip DLP projectors. Since a single chip DLP projector uses a color wheel, as described above, only one color is actually displayed at any given moment. As the eye moves across the projected image, these separate colors become visible, resulting in a perceived "rainbow". The manufacturers of single-chip DLP projection systems use color wheels rotating at higher speeds, or with more color segments in order to minimize the appearance of the artifacts. These are referred to as 2x, 3x or 4x wheels. For example, a six segment wheel(RGBRGB) rotating at 2x speed would be a 4x wheel.

Three-chip projectors

A three-chip DLP projector uses a prism to split light from the lamp, and each primary color of light is then routed to its own DMD chip, then recombined and routed out through the lens. Single-chip DLP systems are capable of displaying 16.7 million colors, whereas three-chip DLP systems can display up to 35 trillion colors.

Market place

DLP is rapidly becoming a major player in the rear-projection TV market, having sold two million systems and achieved a 10% market share. Over 50 manufacturers offered models during the 2004 holiday season, up from 18 the previous year. DLP chips currently constitute 5% of Texas Instrument's total sales. Small standalone projection units (also called front projectors) using DLP technology have become very popular for office presentation and home theater duties.

Pros:

• Smooth, jitter-free images
• Good color depth and contrast
• No possibility of burn-in
• Less of the screen door effect than with LCD displays
• DLP rear projection TVs are smaller, thinner, and lighter than CRT displays.
• Replaceable light source means a potentially longer life than CRTs and plasma displays
• Light source more-easily replaceable than with LCDs; often user-replaceable

Cons:

• In single chip designs, some viewers are bothered by the "rainbow effect," explained above.
• Not as thin as LCD or plasma displays (although approximately comparable in weight)
• Fan noise
• Replacement bulbs are expensive (USD$200-$500), except with Samsung's HL-S5679W, which uses LED as it's light source.

DLP and LCoS

The most similar competing system to DLP is known as LCoS (Liquid Crystal on Silicon), which creates images using a stationary mirror mounted on the surface of a chip, and uses a liquid crystal matrix, to control how much light is reflected.

See also

• Flat panel display
• LCD
• Plasma display
• OLED
• SED-tv
• Comparison of display technology

External links

• DLP Demo by Texas Instruments (Flash)
• DLP Overview by Texas Instruments
• DLP... See It! Resource page on DLP and TVs in general
• "The Great Technology War: LCD vs. DLP" (projectorcentral.com)
• What's so hot about LCOS technology? A comparison of DLP and LCoS
• DLPmovies.com A directory of DLP-enabled cinemas
• Howstuffworks.com DLP Howstuffworks.com's article on DLPs
• Flat Screen Info Information on DLP Rear-Projection HDTV
• Home Theater Network Upside and downside of DLP technology.

This dlp television index site has been developed to help wayward users find the information they are looking for, no matter how they are mistakenly spelled or mistyped. This site is designed to help users find dlp television information for the following query variants:

dlp	dlp tlevision	dlp tleevisiom	dlp teevision
dlp terevisiom	dlp telvision	dlp teervisiom	dlp teleision
dlp talevisiom	dlp televsion	dlp televiion	dlp terevition
dlp televison	dlp terevishun	dlp televisin	dlp talevition
dlp televisiom	dlp talevishun	dlp teelvisiom	dlp terevichun
dlp tleevichun	dlp teelvichun	dlp talevichon	dlp talevichun
dlp televichon	dlp terevichon	dlp tleevichon	dlp teelvichon
dlp televichun	dlp talevision	dlp televition	dlp teelvision
dlp teelvition	dlp tleevision	dlp tleevition	dlp televishun
dlp teervition	dlp teelvishun	dlp tleevishun	dlp terevision
dlp teervision	dlp teervishun	dlp teievision	dlp televlslon
dlp televisino	dlp televisoin	dlp televiison	dlp televsiion
dlp teleivsion	dlp telveision	dlp etlevision	dlp televisio
dlp elevision	television	dip television	dyp television
lp television	rp television	dl television	dr television
dp television	ldp television	rdp television	drp television
dpl television

If you would like to add or correct the content of this site, or if you are interested in supporting the efforts of misspelledsearch.com by placing your product information on these dlp television pages, please contact mistype@gmail.com for details.