JVC DLA-HD550 Full HD D-ILA Home Theater Front Projector Projector - Specs

Contrast Ratio is the difference between the whitest white and the darkest black colors the display can show. The greater the contrast, the better the screen and the subtlety of colors it can display.
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Type of technology that is used to project the images.
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Projector brightness is measured in ANSI lumens. ANSI stands for "American National Standards Institute", who created a scale by which to measure the overall brightness value for projectors. The measurement represents the average value of 9 points on the projected screen image. The higher the ANSIv lumens value the brighter and sharper the projected image will be. \r\nWith a measurement of less than 1000 lumens, viewing can be hard unless in a darkened room. With a measurement of more than 3000 lumens, and it may be possible to see even in a sunlight filled room. There are several additional variables to consider as well as lumens, such as lamp bulb type, LCD technology and contrast ratios. If any of these variables is adjusted, it will make two projectors with the same lumens measurement display images of different quality. For example, a projector with a halogen lamp will appear darker than a projector with a metal-halide bulb.
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A video format describes how one device sends a video pictures to another device, or more formally, the video format describes the sequence and structure of frames that create the moving video image. Video formats are commonly known in the domain of commercial broadcast and consumer devices; most notably to date, these are the analog video formats of NTSC, PAL, and SECAM:

NTSC: (National Television Standards Committee), is the analog television system in use in the United States, Canada, Japan, South Korea, the Philippines, Mexico, and some other countries, mostly in the Americas.

PAL: (Phase Alternating Line), is a colour encoding system used in broadcast television systems in large parts of the world (as Europe - except to France and Eastern Europe).

SECAM: (Sequential Color with Memory), is an analog color television system is used in France and Eastern Europe.
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High-Definition is the top of the line, all digital format for broadcasting and viewing TV programming. With HD, you see images at a higher resolution than you have ever viewed on a home screen before. This clarity is delivered in a crystal clear, widescreen format, with CD quality sound: as if a movie theater was dropped in your living room.
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Image ratio refers to the relation of the width of the image to the height. While you can change the size of the image, the ratio stays constant.
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Maximum Resolution refers to the highest resolution that a given projector can display. Resolution is measured in the number of pixels (or dots) per unit of area, (number of pixels wide by the number of pixels high) that can be displayed on the screen or monitor. A greater amount of pixels per unit of area produces a higher resolution.
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Native resolution refers to the resolution of the computer output signal via the projector. Usually, the input signal (native) from a computer is automatically converted to the projector's own resolution. For this conversion process, the resolution is achieved by hardware/software image manipulation called re-scaling.
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Projectors can create a low hum or background noise from the cooling fan. Here the average noise made by the projector is measured in dB (decibels).
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We show Flat Panel TV height without stand
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Depending on the type of use and portability needed, weight is an important consideration when selecting a product.
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This is the type of connection required to download music from your PC to the MP3 player. Some models offer more than one interface type for maximum flexibility.
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Lamp type describes the light source and projection element of a projector.
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As with all bulbs, projector bulbs only last for a certain amount of time.\r\nMeasured in (lit) hours, the life-span can range between hundreds to thousands of hours depending on the technology of the bulb.
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As with all bulbs, projector bulbs only last for a certain amount of time.
Measured in (lit) hours, the life-span can range between hundreds to thousands of hours depending on the technology of the bulb.
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