When you are ranking the Manufacturers of flat panel LED HDTV sets, Samsung is clearly the Industry leader. It has had the highest sales volume of all the manufacturers of flat screen TVs for quite a few years. For the first quarter of 2011, Samsung's lat panel TV set sales were 30% more than its closest competitor. If you ever had the chance to see a Samsung HDTV in operation set you will not find that at all surprising.
The pictures their sets produce are very stunning in their clarity and sharpness. Add to that the high level of technical sophistication and the wide range of features that Samsung packs into its sets, and you have a very compelling package for anyone contemplating the purchase of one of these sets....and that's before you even consider the Active 3D aspect! The Samsung UN40D6400 is another in their broad lineup of excellent HDTV sets.
Samsung's 3D HDTV sets use the "Active 3D" approach to creating 3D images. This system uses glasses that have LCD lenses. These act like shutters when you are looking at the TV screen. The lenses are alternately clear, then dark, for each eye as the image for that particular eye is being displayed on the screen.. The other way of approaching the 3D problem is called "Passive 3D". There is a very big difference between the two methods, and it becomes apparent in the perceived quality of the images that are you see on the sets.
To create the illusion of a 3D image, your left eye and your right eye must see an image which is slightly different, images in which the objects that are at various distances from your position appear to be in a different place relative to each other. To see how this effect works, try holding up your finger or thumb at arm's length, and look at it with just your right eye, then only with your left eye. Notice the relative position of your finger (or thumb) when you compare it with other features that are at a larger distance from you.
You will notice that when looking through your right eye, the object will appear to be to the left of certain objects in the background, but when looking through your left eye, the apparent position of the object will seem to have shifted to the right, relative to that same background object. This illusion is referred to as "parallax", and it is the basic principle of the two systems used to create the 3D effect on a television or movie screen.
The key difference between the two systems, the Active system and the Passive system, is in the way the two stereoscopic images are presented to the appropriate eyes. A three-dimensional effect will only occur if each eye sees only the correct image. (Think back to your old View-Master). As you may have experienced, if you look at a 3D movie or TV image without the proper glasses, all you see is a double image. The 3D effect requires that your brain sees a distinctly different image from each eye, and that the images have the proper parallax.
The Passive system for creating 3D images uses glasses with polarizing filters that are set at 90 degrees relative to each other. The image on the screen is also passed through polarizing filters, with alternating scan lines being polarized in the two different directions. This means that for an HDTV picture, with 1080 horizontal lines per frame, that 540 lines are polarized in one direction to create the image seen by the right eye, and the other 540 alternating lines are polarized in the 90 degree direction, for the left eye. The result of this is that you see an image which has an effective resolution of 540 lines, just half of what is required for true HDTV, which is 1080 lines.
With an Active system, the glasses "actively" become opaque, then transparent, by controlling the LCDs that are used in the lenses. Each eye is blocked in sequence, as the stereo frame for the left or right eye is being displayed on the screen. The coordination is accomplished by synchronizing the glasses with a signal transmitted from the TV set. These frames are shown at the rate of 120 HZ, so that each eye sees 60 images per second. Because each eye perceives a full-screen, 1080i image, there is no downgrading of resolution in the 3D image.
Samsung uses the Active 3D system in all its 3D TVs, including the UN40D6400. In addition to offering great 3D TV, this set has a many other great features that will make it your media center. Samsung employs LED edge lighting to furnish the back-lighting for the screen (LCD's do not create any light - they only function as "shutters" to regulate the transmission of light through the screen). The edge mounted LEDs do away with the small diameter fluorescent lamps that were previously used in earlier LCD HDTV sets.
Samsung has a complete array of Smart Apps that run on their TVs. These Apps are small programs (much like iPhone Apps) that run on the TV set. Although some of them must be purchased for what amounts to pocket change, there are quite a few free Apps. These cover a wide range of subject areas such as Lifestyle, Videos, Sports, Education, Games, and Information. There are also Apps that enable you to access the Internet, and to use services like Hulu Plus, Netflix, Pandora, and many others.
The Samsung UN40D6400 set also has a feature called "ConnectShare" Movie feature. This will allow you to view videos, listen to music, and browse pictures straight from a USB flash drive. You simply plug the drive into the set's USB port, and you are ready to watch or listen to all of your entertainment media files.
In addition to all the great electronic features, Samsung has designed this set to improve your viewing experience by minimizing reflections from the room environment on the TV screen. The set features Samsung's "Ultra Clear Panel" at the front of their screens. This special panel has a treated surface that will absorb light from around the room. This helps to eliminate those distracting reflections that would otherwise interfere with the TV picture.
The pictures their sets produce are very stunning in their clarity and sharpness. Add to that the high level of technical sophistication and the wide range of features that Samsung packs into its sets, and you have a very compelling package for anyone contemplating the purchase of one of these sets....and that's before you even consider the Active 3D aspect! The Samsung UN40D6400 is another in their broad lineup of excellent HDTV sets.
Samsung's 3D HDTV sets use the "Active 3D" approach to creating 3D images. This system uses glasses that have LCD lenses. These act like shutters when you are looking at the TV screen. The lenses are alternately clear, then dark, for each eye as the image for that particular eye is being displayed on the screen.. The other way of approaching the 3D problem is called "Passive 3D". There is a very big difference between the two methods, and it becomes apparent in the perceived quality of the images that are you see on the sets.
To create the illusion of a 3D image, your left eye and your right eye must see an image which is slightly different, images in which the objects that are at various distances from your position appear to be in a different place relative to each other. To see how this effect works, try holding up your finger or thumb at arm's length, and look at it with just your right eye, then only with your left eye. Notice the relative position of your finger (or thumb) when you compare it with other features that are at a larger distance from you.
You will notice that when looking through your right eye, the object will appear to be to the left of certain objects in the background, but when looking through your left eye, the apparent position of the object will seem to have shifted to the right, relative to that same background object. This illusion is referred to as "parallax", and it is the basic principle of the two systems used to create the 3D effect on a television or movie screen.
The key difference between the two systems, the Active system and the Passive system, is in the way the two stereoscopic images are presented to the appropriate eyes. A three-dimensional effect will only occur if each eye sees only the correct image. (Think back to your old View-Master). As you may have experienced, if you look at a 3D movie or TV image without the proper glasses, all you see is a double image. The 3D effect requires that your brain sees a distinctly different image from each eye, and that the images have the proper parallax.
The Passive system for creating 3D images uses glasses with polarizing filters that are set at 90 degrees relative to each other. The image on the screen is also passed through polarizing filters, with alternating scan lines being polarized in the two different directions. This means that for an HDTV picture, with 1080 horizontal lines per frame, that 540 lines are polarized in one direction to create the image seen by the right eye, and the other 540 alternating lines are polarized in the 90 degree direction, for the left eye. The result of this is that you see an image which has an effective resolution of 540 lines, just half of what is required for true HDTV, which is 1080 lines.
With an Active system, the glasses "actively" become opaque, then transparent, by controlling the LCDs that are used in the lenses. Each eye is blocked in sequence, as the stereo frame for the left or right eye is being displayed on the screen. The coordination is accomplished by synchronizing the glasses with a signal transmitted from the TV set. These frames are shown at the rate of 120 HZ, so that each eye sees 60 images per second. Because each eye perceives a full-screen, 1080i image, there is no downgrading of resolution in the 3D image.
Samsung uses the Active 3D system in all its 3D TVs, including the UN40D6400. In addition to offering great 3D TV, this set has a many other great features that will make it your media center. Samsung employs LED edge lighting to furnish the back-lighting for the screen (LCD's do not create any light - they only function as "shutters" to regulate the transmission of light through the screen). The edge mounted LEDs do away with the small diameter fluorescent lamps that were previously used in earlier LCD HDTV sets.
Samsung has a complete array of Smart Apps that run on their TVs. These Apps are small programs (much like iPhone Apps) that run on the TV set. Although some of them must be purchased for what amounts to pocket change, there are quite a few free Apps. These cover a wide range of subject areas such as Lifestyle, Videos, Sports, Education, Games, and Information. There are also Apps that enable you to access the Internet, and to use services like Hulu Plus, Netflix, Pandora, and many others.
The Samsung UN40D6400 set also has a feature called "ConnectShare" Movie feature. This will allow you to view videos, listen to music, and browse pictures straight from a USB flash drive. You simply plug the drive into the set's USB port, and you are ready to watch or listen to all of your entertainment media files.
In addition to all the great electronic features, Samsung has designed this set to improve your viewing experience by minimizing reflections from the room environment on the TV screen. The set features Samsung's "Ultra Clear Panel" at the front of their screens. This special panel has a treated surface that will absorb light from around the room. This helps to eliminate those distracting reflections that would otherwise interfere with the TV picture.
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