The Samsung Company has been a leader in the development of HDTV flat panel sets; it is one of the premier brands on the market. Their latest sets feature LED back-lighting technology, which replaces the linear fluorescent tube systems that were used by the first generation of LCD TV sets. The use of LED technology has made it possible for them to design sets that are thinner, and weigh less than previous sets, yet produce substantially better picture quality. The Samsung UN46D6420U LED 3D HDTV is a perfect example of this technical superiority.
One of the outstanding features of this set is its 3D capability. Samsung has adopted the Active 3D method for creating the 3D images on their HDTV sets. The key to achieving the 3D effect is to make sure that each of the two stereo images is seen only by the proper eye. This is done by one of two methods, which are termed "active" and "passive". Passive systems utilize glasses with polarized lenses that work in tandem with polarizing filters that are built in to the TV screen.
These filters polarize two sets of alternating horizontal lines on the screen in one of two different patterns. Each eye then sees only the set of lines displayed on the screen (and therefore sees an image that has only half the full-screen resolution!) that matches the polarization of the lens on the right or left side in the glasses, insuring that each eye sees only one image.
With an Active system, the glasses "actively" alternate between being transparent, then opaque, by activating the LCDs in the lenses. Each eye is blocked sequentially, as the stereo image for the right or left eye is displayed on the screen. The synchronization is accomplished using a bluetooth signal provided by the TV set. These alternating images are shown at the rate of 120 HZ, so that each eye will see 60 images per second. Because each eye sees a full-screen image, there is no reduction of resolution in the 3D picture.
As mentioned previously, Samsung's 3D HDTVs use the Active 3D system. They have two types of glassed that work with these TVs. One set requires batteries, the other is rechargeable, using any USB connection. The rechargeable glasses are extremely light, weighing just one ounce, and go for tens of hours of use on one charge.
The Samsung Active 3D system also makes it possible to "up-convert" regular 2D programming and content to what is termed "near 3D" appearance. This means that 2D programs, which could be DVDs, broadcasts, or home movies can be provided with the appearance of depth that is not otherwise present in the material.
The dimensions of the screen and the size of the room are important factors to consider when choosing a 3D television set. The optimal seating distance, to avoid eye strain is 3x the vertical dimension of the screen. On that basis, for a 46" screen (which is about 23 inches high), the closest distance should be about 67", or approximately 5.5 feet. For a 55" screen, the closest distance would be slightly less than seven feet.
The Active 3D system in this Samsung UN46D6420U LED TV is just the tip of the iceberg when listing its great technical features. This UN46D6420U Samsung set is packed with what Samsung calls "Smart Apps" - applications that form what they refer to as their "Smart TV" platform. These "Apps" allow you to use the TV to work on the Internet, and to download Web content from sites like Netflix, Hulu Plus, Pandora, and many others.
Although certain "Apps" must be purchased for a dollar or two (much like iPhone apps), there is a generous list of Apps that are free, such as children's material and games. Apps categories include areas like Sports, Lifestyle, Videos, Games, Education, and Information.
Another really nice feature of this model UN46D6420U is its use of "Allshare DLNA Technology". DLNA is an abbreviation for "Digital Living Network Alliance". It represents what is called an "interoperability protocol" that enables different electronic devices to link together in order to make possible file sharing and data transmission between the devices. Samsung's "Allshare" makes it simple to synch up various DLNA-enabled components with your Samsung TV set, which means that you can access all the various media files on your computer, iPhone, and other devices on your HDTV set . Add the optional LinkStick, and you will have wireless access too.

These filters polarize two sets of alternating horizontal lines on the screen in one of two different patterns. Each eye then sees only the set of lines displayed on the screen (and therefore sees an image that has only half the full-screen resolution!) that matches the polarization of the lens on the right or left side in the glasses, insuring that each eye sees only one image.
With an Active system, the glasses "actively" alternate between being transparent, then opaque, by activating the LCDs in the lenses. Each eye is blocked sequentially, as the stereo image for the right or left eye is displayed on the screen. The synchronization is accomplished using a bluetooth signal provided by the TV set. These alternating images are shown at the rate of 120 HZ, so that each eye will see 60 images per second. Because each eye sees a full-screen image, there is no reduction of resolution in the 3D picture.
As mentioned previously, Samsung's 3D HDTVs use the Active 3D system. They have two types of glassed that work with these TVs. One set requires batteries, the other is rechargeable, using any USB connection. The rechargeable glasses are extremely light, weighing just one ounce, and go for tens of hours of use on one charge.
The Samsung Active 3D system also makes it possible to "up-convert" regular 2D programming and content to what is termed "near 3D" appearance. This means that 2D programs, which could be DVDs, broadcasts, or home movies can be provided with the appearance of depth that is not otherwise present in the material.
The dimensions of the screen and the size of the room are important factors to consider when choosing a 3D television set. The optimal seating distance, to avoid eye strain is 3x the vertical dimension of the screen. On that basis, for a 46" screen (which is about 23 inches high), the closest distance should be about 67", or approximately 5.5 feet. For a 55" screen, the closest distance would be slightly less than seven feet.
The Active 3D system in this Samsung UN46D6420U LED TV is just the tip of the iceberg when listing its great technical features. This UN46D6420U Samsung set is packed with what Samsung calls "Smart Apps" - applications that form what they refer to as their "Smart TV" platform. These "Apps" allow you to use the TV to work on the Internet, and to download Web content from sites like Netflix, Hulu Plus, Pandora, and many others.
Although certain "Apps" must be purchased for a dollar or two (much like iPhone apps), there is a generous list of Apps that are free, such as children's material and games. Apps categories include areas like Sports, Lifestyle, Videos, Games, Education, and Information.
Another really nice feature of this model UN46D6420U is its use of "Allshare DLNA Technology". DLNA is an abbreviation for "Digital Living Network Alliance". It represents what is called an "interoperability protocol" that enables different electronic devices to link together in order to make possible file sharing and data transmission between the devices. Samsung's "Allshare" makes it simple to synch up various DLNA-enabled components with your Samsung TV set, which means that you can access all the various media files on your computer, iPhone, and other devices on your HDTV set . Add the optional LinkStick, and you will have wireless access too.
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Find full details, and learn more about the other great features of the Samsung UN46D6420U, including The Eco Sensor, the Wide Color Enhancer Plus, and more. You will also find the full specs for the set. You can learn more about other great LED TV sets here.
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