There's a lot of talk these days about frame rates in the new Hdtvs. The frame rate is naturally the estimate of obvious images a Tv screen can display in a second, and is also known as the display rate or "Hertz". Hertz is the scientific unit for cycles per second, and is abbreviated "Hz". The latest buzzword is "120Hz", which means a display rate of 120 frames per second. This is twice as fast as most Hdtvs are capable of (60Hz), so it ought to make the intriguing pictures look smoother. But, the human eye can only process about 20 to 25 obvious images per second, so why should it matter what the frame rate is, as long as it is faster than your eyes can see?

The talk comes when you comprehend that not all video is filmed at the same rate. Movies are commonly filmed at a rate of 24 Hz, most Tv is filmed at 30 Hz, and some sports events are now being filmed at 60 Hz.

Samsung Plasma Tv Problems

Some easy math will show the problem and enumerate the solution. When a Tv set wants to display 60 frames per second, and the cable Tv enterprise sends it 30 frames per second, that's easy to deal with: the Tv shows each frame twice in a row, creating an image made up of two consecutive frames. Each image will last exactly 1/30th of a second on the screen, and things will look perfectly smooth.

Hdtv Enters the Fourth dimension - 120Hz Frame Rates

LG 50PT350 50-Inch 720p 600 Hz Plasma HDTV Best

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LG 50PT350 50-Inch 720p 600 Hz Plasma HDTV Feature

Picture Wizard II (Easy Picture Calibration)
ENERGY STAR Qualified
50-inch Plasma HDTV panel with Full HD 1080p resolution and 3,000,000:1 dynamic contrast ratio
600Hz Sub Field Driving virtually eliminates motion blur, for crystal-clear motion video in sports, games, etc.
Enjoy media from connected USB devices with support for a wide range of video, music, and image files
Intelligent Sensor automatically optimizes the picture for the lighting and color conditions in the viewing room
TruSlim Frame is less than an inch wide, for viewing without the distraction of a larger frame

LG 50PT350 50-Inch 720p 600 Hz Plasma HDTV Overview

You know what it is you enjoy. You get into sports, fast-action and entertainment that's displayed in life like resolution. With a 600Hz refresh rate and HD picture quality, the 50PT350 takes that enjoyment and boosts it to new levels.

LG 50PT350 50-Inch 720p 600 Hz Plasma HDTV Specifications

You know what it is you enjoy.

PT350 Plasma HDTV

You get into sports, fast-action and entertainment that's displayed in lifelike resolution. With a 600Hz refresh rate and HD picture quality, the PT350 takes that enjoyment and boosts it to new levels.

KEY TECHNOLOGIES

TruSlim Frame.

Peel away the old standard for ultra slim framing. At less than 1" wide the new TruSlim Frame trims away distraction of wide frame.

Capture every moment.

Tired of streaky action or unclear plays during the game? See sports, fast action and video games like never before. The 600Hz refresh rate virtually eliminates motion blur.

See and experience more.

Pictures are sharper. Colors are more vibrant. Entertainment is more real. Everything looks better on an HDTV.

ADDITIONAL FEATURES

Energy Star Qualified.: Save more than energy. Earning the ENERGY STAR means a product meets strict energy efficiency guidelines set by the US Environmental Protection Agency and the Department of Energy. For TVs, it means they save energy both in standby and active (when they're on) modes. ENERGY STAR qualified TVs use about 30% less energy than standard units.
Make it picture perfect.: Find the perfect picture. Get easy self–calibration with on-screen reference points for key picture quality elements such as black level, color, tint, sharpness and backlight levels. Take the guesswork out of picture adjustments with this simple-to-use feature. It's not actually magic, but it will sure seem that way.
Automatic picture adjustment.: View it in the right light. Let your TV do the adjustments for you. Intelligent Sensor automatically optimizes the picture to the lighting and color conditions in the room for a more enjoyable viewing experience.
Smart Energy Saving.: Wise and not wasteful. With our Smart Energy Saving Features, you can conserve money and energy.
Ready for pro calibration.: ISFccc ready. LG's ISFccc Ready HDTVs contain the detailed standards necessary for professional calibration of brightness, contrast, tint, sharpness, color levels and much more to meet local lighting conditions for both daytime and nighttime viewing. Settings are added to preset modes for easy access from your LG remote.

Specifications (PDF)

LG 2011 Plasma Feature Comparison

Series	PZ950	PZ750	PZ550	PW350	PV450	PT350
Models:	50", 60"	50", 60"	50", 60"	42", 50"	50", 60"	42", 50"
High Definition Resolution	1080p	1080p	1080p	720p	1080p	720p
LG Smart TV/NetCast	LG Smart TV	LG Smart TV	NetCast
TruBlack Filter
THX 3D Certified Display
600Hz Max Sub Field Driving/600Hz Sub Field Driving	600Hz Max	600Hz Max	600Hz Max	600Hz	600Hz Max	600Hz
Contrast Ratio	5,000,000:1	3,000,000:1	3,000,000:1	3,000,000:1	3,000,000:1	3,000,000:1
Magic Motion Remote
Wi-Fi Ready
DLNA Certified
3D Ready
2D to 3D Conversion
TruSlim Frame
ENERGY STAR Qualified
Intelligent Sensor
Picture Wizard II
Smart Energy Saving
ISFccc Ready
HDMI/USB	4.2	4.2	4.2	3.1	3.1	3.1

Customer Reviews

So what happens when your Dvd player sends 24 frames per second to the Tv, but the Tv still wants to show 60 on the screen? This is a small slower than the cable Tv frame rate, so if it naturally shows each frame twice and then waits for the next one, there will be a black gap in in the middle of and the movie will look terrible. So, the Tv needs to triple one frame, double the next, triple the following one, and so on, giving it a total of 60 frames to show each second. This is known as 3:2 Pulldown.

The 3:2 Pulldown trick works Ok, but there is a problem. One image lasts a 20th of a second, then the next lasts a 30th. A 20th of a second is long sufficient for most population to tell that it's easily a static image, and when the camera pans around in a scene, things will seem to move unevenly. But if your Tv is able to display 120 frames per second, it can take the 24 Hz input and naturally show each frame 5 times in a row for a total of 1/24 (or 5/120) second per frame, with no divergence from frame to frame. And when 30Hz video comes in, it displays each frame 4 times in a row, for a total of 1/30 (or 4/120) second per frame. Problem solved.

Now that frame rates are fast sufficient to display any kind of input smoothly, Hdtvs not only have high resolution in the x and y (height and width) dimensions, but also in the t (time) dimension. As in all kinds of digital media, higher resolution means smaller units of data, and that means a more lifelike pregnancy of reality. The 120Hz frame rate won't be very base until 2008, but a few Hdtvs already have it, like the Sony Bravia Xbr4 series and the Sharp Aquos 92U series.

Hdtv has easily entered the fourth size (time), but has skipped the third (depth) in the process. Until we see start finding holographic movies on Dvd, we'll have to wait for true four-dimensional Tv.

samsung plasma tv problems

Saturday, March 10, 2012