What is Contrast Ratio?
The contrast ratio is a measure of a display system, defined as the ratio of the luminance of the brightest color (white) to that of the darkest color (black) that the system is capable of producing. A high contrast ratio is a desired aspect of any display, although there is no industry standard for measurement of contrast ratio, so comparing the contrast ratio of one brand with another may not yield valid results.
"Dynamic Contrast Ratio" is one of the recent upcoming development in LCD Technology.
This display underpower the backlight lamp in case the darker image needs to show on screen.
Dynamic contrast ratio is usually measured at factory with two panels (one vs another) of the same model as each panel will have an inherent Dark and Light (Hot) spot. Static is usually measured with the same screen showing half screen full bright vs half screen full dark
Friday, November 13, 2009
Wednesday, November 11, 2009
Aspect Ratio
What is Aspect Ratio?
The aspect ratio of an image is its displayed width divided by its height (usually expressed as "x:y" or "x×y). The older format for analog TV was 4:3, while the standard format for HDTV (both HD signals and HDTVs) is 16:9 or 1.78:1 (approximately 1.78" wide for every 1" high), while film directors can choose from any of the available film ratios. The most common formats for movies are 2.35:1, 2.40:1, and 1.85:1, which is very close to the 1.78:1 of HDTV.
Aspect Ration Video
Home Theater Store
The aspect ratio of an image is its displayed width divided by its height (usually expressed as "x:y" or "x×y). The older format for analog TV was 4:3, while the standard format for HDTV (both HD signals and HDTVs) is 16:9 or 1.78:1 (approximately 1.78" wide for every 1" high), while film directors can choose from any of the available film ratios. The most common formats for movies are 2.35:1, 2.40:1, and 1.85:1, which is very close to the 1.78:1 of HDTV.
Aspect Ration Video
Home Theater Store
Thursday, November 5, 2009
Online Gift Cards Modia | Home Theater Store
Not Sure what to give your loved ones? The Pressure's off!
MODIA Home Theater Store Online Gift Card makes the perfect gift. Available in any denomination. Our online gift cards arrive with your personal message via email.
Gift cards are good for anything sold at MODIA Home Theater Store.
Gift cards are good for anything sold at MODIA Home Theater Store.
Tuesday, November 3, 2009
Sony Bravia KDL65W5100 (KDL-65W5100) LCD HDTV
Sony has launched BRAVIA W-Series KDL65W5100 LCD TV. This 65-Inch 120Hz LCD TV is all equipped with Sony’s flagship feature consisting of Motion flow 120Hz technology.
Built-in BRAVIA Internet Video compatibility lets you enjoy online movie & TV streaming.
Meanwhile it facilitates you to personalize your entertainment including latest news, weather and stock information.
o Motionflow 120Hz technology eliminates judder and augments the action movements for more detailed and crisp image quality Integrated BRAVIA Internet Video feature lets you access on line contents
o You can select and personalize Bravia widgets that brings you all the latest news and weather forecast
o USB input facilitated you to watch your Multimedia on big screen, enjoy your mp3 or to video clips
Built-in BRAVIA Internet Video compatibility lets you enjoy online movie & TV streaming.
Meanwhile it facilitates you to personalize your entertainment including latest news, weather and stock information.
o Motionflow 120Hz technology eliminates judder and augments the action movements for more detailed and crisp image quality Integrated BRAVIA Internet Video feature lets you access on line contents
o You can select and personalize Bravia widgets that brings you all the latest news and weather forecast
o USB input facilitated you to watch your Multimedia on big screen, enjoy your mp3 or to video clips
Monday, November 2, 2009
LED Television Types
There are 3 main types of LED TVs:
Edge-lit: LEDs are arranged around the perimeter of the screen and lit is distributed via a diffusive reflection panel behind the LCD screen. It has only slight advantage in picture quality over CCFLs but it produces the thinnest of all the LCD TVs. (All Samsung LEDs 8000 series and below.)
Back-lit: An array of LEDs are arranged directly behind the LCD screen. The LEDs can be dimmed but not independently. Brighter pictures and more energy efficient than CCFL but not as thin as Edge-lit. (Sharp LE700 series.)
Local-dimming: Local dimming is Back-lit but individual or small groups of LED's can be dimmed independently. This is the most expensive but it produces the richest colors and the deepest blacks. Again, not as thin as Edge-lit but close to plasma in terms of contrast ratio. Local dimming comes in two varieties; all-white LEDs or groups of red, green, & blue LEDs. (Samsung 8500 series and Sony XBR8 Tri-Luminous)
An important thing to note is that just because an LED is backlit does not mean there is an LED for each pixel. Actually, no such TV exists. In the case of the Sharp LE700, there is only a couple dozen LEDs behind the whole LCD screen. Usually, one LED is responsibly for lighting several thousands of pixels. Which means there is still room for improvement as LEDs get smaller and less expensive.
The biggest thing to remember about LED TVs is that they offer a better picture than CCFL, they are more energy efficient (by up to 40%) and the are usually thinner.
Edge-lit: LEDs are arranged around the perimeter of the screen and lit is distributed via a diffusive reflection panel behind the LCD screen. It has only slight advantage in picture quality over CCFLs but it produces the thinnest of all the LCD TVs. (All Samsung LEDs 8000 series and below.)
Back-lit: An array of LEDs are arranged directly behind the LCD screen. The LEDs can be dimmed but not independently. Brighter pictures and more energy efficient than CCFL but not as thin as Edge-lit. (Sharp LE700 series.)
Local-dimming: Local dimming is Back-lit but individual or small groups of LED's can be dimmed independently. This is the most expensive but it produces the richest colors and the deepest blacks. Again, not as thin as Edge-lit but close to plasma in terms of contrast ratio. Local dimming comes in two varieties; all-white LEDs or groups of red, green, & blue LEDs. (Samsung 8500 series and Sony XBR8 Tri-Luminous)
An important thing to note is that just because an LED is backlit does not mean there is an LED for each pixel. Actually, no such TV exists. In the case of the Sharp LE700, there is only a couple dozen LEDs behind the whole LCD screen. Usually, one LED is responsibly for lighting several thousands of pixels. Which means there is still room for improvement as LEDs get smaller and less expensive.
The biggest thing to remember about LED TVs is that they offer a better picture than CCFL, they are more energy efficient (by up to 40%) and the are usually thinner.
Wednesday, October 28, 2009
Plasma Vs LCD
Technology : How it works?
LCD : A matrix of thin-film transistors (TFTs) supplies voltage to liquid-crystal-filled cells sandwiched between two sheets of glass. When hit with an electrical charge, the crystals untwist to an exact degree to filter white light generated by a lamp behind the screen
LCD : A matrix of thin-film transistors (TFTs) supplies voltage to liquid-crystal-filled cells sandwiched between two sheets of glass. When hit with an electrical charge, the crystals untwist to an exact degree to filter white light generated by a lamp behind the screen
Plasma : Plasma technology consists hundreds of thousands of individual pixel cells, which allow electric pulses (stemming from electrodes) to excite rare natural gases-usually xenon and neon-causing them to glow and produce light.
CONTRAST / BLACK LEVELS : Will it be able to depict best of shadows or darks?
LCD : Even though there have been continuous research and development in LCD TVs black levels, only the best LCD televisions can really manage to crossover 1000:1 contrast ratio hurdle.
Plasma : Better than its counterpart; Plasma technology has certainly attained quite high contrast ratios, that fetches blackest black compared to the whitest white
COLOR ACCURACY : More lifelike images
LCD : Although most LCD displays handle it quite well; but it is inherently difficult pattern to maintain color accuracy and vivacity in comparison with PLASMA TVs.
Plasma : PLASMA certainly has edge over LCD as in plasma display; every pixel inherits all basic color of red, green and blue elements, which in conjunction create 16.77 million colors. That results into more rich and color accuracy.
VIEWING ANGLE : Which one has Best viewing angle?
LCD : Here again PLASMA outperforms LCDs. The best viewing angle of LCD HDTV till date is around 120 and 130 degree.
Plasma : Plasma has made much of 160° viewing angles. The 160° viewing angle for A PLASMA makes it best. Every angle is great viewing angle
FAST-MOVING VIDEO PLAYBACK : Fast action scenes! Which one is better?
LCD : Again PLASMA takes the lead because of their exceptional capability for fast moving scenes and higher contrast levels
FAST-MOVING VIDEO PLAYBACK : Fast action scenes! Which one is better?
LCD : Again PLASMA takes the lead because of their exceptional capability for fast moving scenes and higher contrast levels
Plasma : Last couple of years has seen rapid improvement in “response time” of LCD TVs. but…. but …but still there is scope for improvement as they still carry slight trailer effect.
HIGH ALTITUDE : What if I move towards higher altitude?
LCD : As LCD are predisposed to handle change in atmospheric pressure; Reason why they are preferred in Airplanes. As LCD are not effected In air pressure fluctuation
HIGH ALTITUDE : What if I move towards higher altitude?
LCD : As LCD are predisposed to handle change in atmospheric pressure; Reason why they are preferred in Airplanes. As LCD are not effected In air pressure fluctuation
Plasma :igh altitudes (6,500 feet and above),difference in air -pressure emerges, which causes plasma displays to give out buzzing sound due to the lower or unfavorable atmospheric pressure
LONGEVITY : Life of my television? Or how many hours of viewing before backlight burn out?
LCD : LCD on average last 50,000 to 65,000 hours; this is what manufactures have to say when asked about durability of their product. In fact an LCD will last long as its backlight does- and the best thing you have is that you can replace these bulbs.
Plasma : Plasma displays utilize current to induce combination of gases (i.e., argon, neon, xenon) due to which it glows red, blue or green. Being an active phenomenon; phosphoric element deplete over time.
SCREEN BURN IN : Why does it happens?
LCD : LCD Technology is not predisposed to “burn-in” of pixels as “Twisting crystals” technology rule-out premature aging of pixels
PLASMA : In case of plasma; PLASMAs are more prone to “burn in” or permanent etch of color in glass display- Although manufactures are doing their best to overcome this tendency and prolong the display life.
POWER CONSUMPTION : Please! I need to reduce carbon foot prints
LCD : Due to florescent backlighting to reproduce images; LCDs consume substantially lesser power to operate than plasmas do; almost half the power consumed by plasma displays.
PLASMA : Plasma TV consumes almost double of electricity of LCD in bid to illuminate Each pixels on screen - even for the darker ones do. Though there is improvement in voltage consumption; still a plasma TV will consume around third more power than LCDs.
RESOLUTION : How many pixels? More pixels means more lucidity in the picture ? Got it?
LCD : LCD HDTV possesses higher resolution per same size contrast to plasma. The least resolution of LCD measures 1366 X 768 - easily full HD resolution in 1080i or 720p.
PLASMA : Most of the PLASMA displays carry 1024 X 768 resolutions. Though this is not truly an HD resolution, but not everyone can figure-out the difference.
Cost : How much dent this purchase gonna make in my pocket?
LCD : Expect to pay a third as much more for a similar size PLASMA.
PLASMA : Costs less than LCD
LONGEVITY : Life of my television? Or how many hours of viewing before backlight burn out?
LCD : LCD on average last 50,000 to 65,000 hours; this is what manufactures have to say when asked about durability of their product. In fact an LCD will last long as its backlight does- and the best thing you have is that you can replace these bulbs.
Plasma : Plasma displays utilize current to induce combination of gases (i.e., argon, neon, xenon) due to which it glows red, blue or green. Being an active phenomenon; phosphoric element deplete over time.
SCREEN BURN IN : Why does it happens?
LCD : LCD Technology is not predisposed to “burn-in” of pixels as “Twisting crystals” technology rule-out premature aging of pixels
PLASMA : In case of plasma; PLASMAs are more prone to “burn in” or permanent etch of color in glass display- Although manufactures are doing their best to overcome this tendency and prolong the display life.
POWER CONSUMPTION : Please! I need to reduce carbon foot prints
LCD : Due to florescent backlighting to reproduce images; LCDs consume substantially lesser power to operate than plasmas do; almost half the power consumed by plasma displays.
PLASMA : Plasma TV consumes almost double of electricity of LCD in bid to illuminate Each pixels on screen - even for the darker ones do. Though there is improvement in voltage consumption; still a plasma TV will consume around third more power than LCDs.
RESOLUTION : How many pixels? More pixels means more lucidity in the picture ? Got it?
LCD : LCD HDTV possesses higher resolution per same size contrast to plasma. The least resolution of LCD measures 1366 X 768 - easily full HD resolution in 1080i or 720p.
PLASMA : Most of the PLASMA displays carry 1024 X 768 resolutions. Though this is not truly an HD resolution, but not everyone can figure-out the difference.
Cost : How much dent this purchase gonna make in my pocket?
LCD : Expect to pay a third as much more for a similar size PLASMA.
PLASMA : Costs less than LCD
Thursday, October 22, 2009
Sony KDL52XBR9 (KDL-52XBR9) 52" 240Hz LCD HDTV
Unlike recent surge of LED Backlighting; 52XBR9 Series uses fluorescent-backlit using WCG-CCLF technology instead of using LED backlighting more common these days. BRAVIA KDL-52XBR9 is 52-inch LCD TFT full HD TV. Two deviously hidden speakers beneath the screen produce exuberating 20 watt audio power. There are some pretty cool privilege to explore the audio capabilities such as auto volume adjustment and voice zoom.
Structured BRAVIA KDL-52XBR9 skirts glossy frame and layer of transparent plastic surrounds the glossy frame. In-fact subtly thin structured frame would endure the test of time.
Known for its performance, Sony BRAVIA KDL-52XBR9 is all equipped with wide array of color and picture presets. Besides that, internet connectivity feature lets you access online video streaming services, yahoo widgets and other online multimedia.
Considering LCD TVs of this Genre, the black levels of this model seem to be better than any of its counterpart. And yes; no definition is complete without mentioning the frame rate, courtesy to 240Hz refresh rate; fast-action scenes are ultra smooth. Color accuracy is up to mark and provides up-scaling to standard definition videos. Matte screen surface obliviates any reflection. Meanwhile your BRAVIA KDL-52XBR9 is energy efficient (it is EPA Energy Star compliant).
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