The FCC standard for HDTV is with a great effect. The amount of information to be digested can be daunting, even for professionals. The old hardware is not obsolete, but will need a tuner to convert the new signal, if you get the signal from an antenna VHF / UHF. If you have cable TV or satellite, which will be provided by the service provider.
However, this may be a good time to upgrade the hardware. The new standard offers anotherbest image. In today's world of digital projectors, LCD, LCoS, plasma and DLP are four different types of TVs that dominate the HDTV market. Each has unique advantages over the others. Plasma and some LCD screens can be mounted on the wall, even if investigations find that some people will mount on the wall. DLP and LCOS and LCD display are some of both technologies projector. Rear projection units are usually very inexpensive. The size of some systemsnow less than 12 centimeters in depth.
The video quality or the best projectors now exceeds that in a traditional film business.
Types of implants:
Or traditional TV: as a direct point of view, the images displayed on a CRT (Cathode Ray Tube).
LCD (Liquid Crystal Display) and plasma TVs can also direct vision. The LCD and plasma TV systems are "flat-screen units.
or rear-projection TV (RPTV) using a combination of mirrors and lensesProjects the image of the back of the screen. This allows the image appears to be significantly larger, up to 70 inches or more. This technique offers the best value in general (size vs. cost).
for front, rear-projection TV (FPTV): This is like a cinema. The image is projected forward to an external monitor. But as a cinema is a very dark room necessary because the screen does not reflect light in the room. This technique is usually more expensive thanRear projection, but the footprint (the area consumed by the device) the system is smaller.
DISPLAY SPECIFICATIONS:
CRT (cathode ray tube):
The established standard for TV screens, good price, quality. The maximum size of the screen is smaller with technology. The technology is still a good choice when you want a smaller picture, and bulkiness is not relevant.
Liquid Crystal Display (LCD):
Thin-design, but has problemsThe display of moving images (sports), the images tend vein. These projectors usually contain three separate LCD glass panels, one for red, green and blue, which is projected. Since the non-colored light through the LCD panel, the individual image elements (pixels) to be opened to catch the light, or closed, blocking the light. This creates the image that is projected onto the canvas.
Historically, the LCD devices have had a problem with pixilation visible. Thisless visible on the newer devices, with higher resolutions.
Most systems use a fluorescent backlit LCD display to shine through the LCD screen. This type of lighting should be replaced every few years. Some manufacturers are introducing LED-backlit display, with a 10 times longer life span. Although the initial cost may be more cost of ownership advantage of this construction can take a look.
Pro
saturation of the color or better, richer and more vibrant
Or rather sharplyPhotos, for the text
energy efficiency or more
Cons:
low level or black and contrast
problems or the display of moving images (Sports)
or LCD panels (especially in the blue channel) may fall, leading to changes in color balance
Visible pixelation O
Liquid Crystal on Silicon (LCoS):
A type of LCD technology, LCOS uses liquid instead of a mirror (usually back-projection), the image projected on the screen. LCOS is a good value compared toPlasma and LCD sets, but expensive, if all other technologies such as rear projection TV DLP respect. This technique uses a DLP chip (see below) is set, but the chip is coated with liquid crystals, reflects the image shown on the screen. LCOS-based systems provide a higher resolution than an LCD or plasma display.
Pro
O Sharp, vivid colors and deep blacks
Either there is no change slowly over time, a plasmadoes
Cons:
Dead pixels or success usually because the technique is partially reflective
Or high maintenance costs: LCOS requires frequent bulb changing needs (somewhere between 6000-8000 hours, about 3-4 years with normal use), compared with 50,000 or more for most LCD or plasma. A replacement lamp costs about $ 400
repeatability or: The image quality varies greatly from machine to machine
Digital Light Processor (DLP):
The DLP is a TexasProceedings of the product being manufactured in Korea. You use a chip that can (with more levels for more than a million mirrors on a chip about one centimeter square), which can be mechanically controlled to reflect the correct color. This technology provides excellent display at a moderate price.
In the best DLP projectors, like those in use at the local cinema, there are three different chip mirror, one each for red, green and blue channel. However, in DLP projectors made for trafficthe masses, there is only a single chip. In these sets, define the color, there is a color wheel that consists of red, green and blue filters. The wheel spins between the lamp and the DLP chip and alternates the color of light striking the chip.
The spinning wheel used to rotate the image, which can be a problem on the screen as the rainbow effect, which is separated in colors known for the production of various projects red, green and blue. At one point, the image on the screen or redgreen or blue, and the technique is based on the eyes, unable to recognize the rapid changes from one to another. However, not only some people can see, separate colors, but the rapid succession of colors may be responsible for the reported cases of eyestrain and headaches. But the vast majority of people can not see the rainbow effect.
Recent rates have doubled in speed color wheel. Even the most recent series instead of using a six-segment color wheel (of a 3), thetwo sequences of red, green and blue. Because the wheel at double speed, and because the red, green and blue seen twice in each rotation, the effect of an increase of four times the speed. This eliminates the visibility of rainbows for the majority of people who have seen above, the effect.
Samsung and other companies have introduced in September DLP with LED lamps and color wheel. Bulbs in the old structures should be replaced every few years. The LED bulb should last l 'Life television.
LaserVue (Mitsubishi) is introduced in the United States, now in time for the holiday season. LaserVue is a DLP Dark Chip ('4 Texas Instruments' Digital Light Processor) that the standard bulb removed and replaced with a solid-state lasers. The performance of the video is excellent, but the technology will cost about $ 7000 for a 65 "HDTV. Reliability / improvement of life can be better, but there are few data on theseA new laser argon-ion laser is expected to have a lifespan of approximately 8000 hours (5-6 years) of normal use. The Mitsubishi LaserVue uses a laser Arasor, a start-up of Australia, made of lithium niobate (PPKN). Mitsubishi is currently occurring in accelerated stress tests, but has not published any results. An HDTV LaserVue draws under 200 watts of electricity. That is about half of the LCD HDTV comparable, and less than one third of a plasmaHigh-Def system.
Pro
or small package size
Or high-contrast images with deep black levels
O Good value
Cons:
pictures or less brilliant
rainbow effect or
Or high maintenance costs: DLP requires frequent bulb changing needs (somewhere between 6000-8000 hours, about 3-4 years with normal use), compared with 50,000 or more for most LCD or plasma. A lamp replacement costs about $ 300 - $ 400 Samsung is equipped with LED lighting instead of lighting. LED shouldare not replaced.
Plasma Display:
Thin-design, high contrast rating, size up to 60 inches or more, some limitations of display: expensive legacy systems have a high risk of burn-in (over time, a reminder that projected what is been maintained), this could be a problem for those who play video or movies, such as adhesive tape. If you put the tape on the game or pause too long, this could be the image on the screen.
Pro
or images of exceptional quality: You canProduction up to 8.6 billion colors, accurate color reproduction and wide viewing angles
or large screen sizes: Some plasma televisions are now produced in the range of screen sizes up to 100 cm
O life: Plasma TVs are also extending their ability to service life of 60,000 hours and a good contrast (deep blacks known)
cheaper than LCD or --
Cons:
The display or are very bulky, heavy and fragile
or Burn-in
or increase slowly over time
OrLow efficiency
Coming Soon: OLED (Organic Light Emitting Diode), HDTVs are now available, but will be a few years before its mandate seriously. An OLED is set to less than 1 mm in thickness. OLED is already used in digital cameras and mobile phones with chips, because of their efficiency, which is important for portable devices.
RULES:
O analog TV or NTSC TV standard definition (SDTV): The current system is beingmaturity (National Television Systems Committee).
o) EDTV (Enhanced Digital TV: Basically, high-end standard-definition TV: While these rates may be better than standard sets, the image quality is not equal HDTV. Technically, there is little difference between an SDTV and HDTV () except for the highest price.
ATSC digital TV or: This is the new system (Advanced Television Systems Committee), which is not necessarily high definition.
HDTV or digital televisionwhere the image is a picture in widescreen format, often with more detail than is contained in current analog TV pictures. Most consumers will see a huge improvement in picture quality. HDTV has better picture quality than SDTV, because a greater number of lines of resolution. The image is two to five times stronger, because the gap between scanning lines are narrower.
SUMMARY
Each of the four technologies can be a good choice. The competition is intense, and allTechnologies continue to improve. Buying a television will never be as easy as it was before HDTV, but the benefits can be the value of a headache.
