LCD HDTV - Technical Information

!: LCD HDTV - Technical Information

LCD HDTV has become a trend in the home entertainment industry because of its sleek and thin design. It has gained recognition because of its innovative features and impressive picture quality. HDTV manufacturers continue to progress and modify the good features and make it even better. However, regardless of the development, the consumers are given an option to purchase a good LCD HDTV at a very reasonable price, which suits their lifestyle and needs. Here are some pointers to consider in choosing an LCD TV.

When you shop for a television, first thing that you would probably ask is the resolution. Nowadays, 1080p resolution is the best for consumer home theater. Some companies promote a 1080i LCD HDTV that has an actual widescreen resolution of 1,366 by 768 pixels, which greatly differs from the 1080p. 1080p resolution has 1,920 by 1,080 pixels.

Sometimes specifications that are worthless like contrast ratio and pixel response time. These specifications are problematic because there are many variations and each is calculated in notably different ways. Sales people tend to focus on whatever specification calculation offers the most impressive looking result.

Regarding pixel response time, what you need to know is if a particular LCD TV is optimized to reduce the smearing of an image when showing a fast motion video. Currently, the 120-Hz display technology is the feature that best addresses this problem. It is a premium LCD feature but its advantages are instantaneously recognizable.

Contrast ratio is the ratio of measured light output when displaying white to its measured light output when displaying video black, also called the black level. There are several types of contrast ratio calculations. These are sequential, intra-frame, and dynamic. But these calculation results are often useless when comparing one LCD HDTV to another. It is better to focus on which model makes the deepest and darkest representation of video black because the LCD TV that has a darker black level has the more detailed, enhanced saturation, and more appealing image.

An LCD HDTV screen can produce more than twice the light output of a Plasma TV. The extra brightness that an LCD HDTV can provide helps in maintaining picture detail by improving the dynamic range of the image in a well-lit environment. To minimize distracting light reflections, a lot of LCD HDTVs have a matte finish. However, there are some new LCD HDTVs that are incorporating glossy top filters that enhance apparent contrast and color saturation by making video black appear pitch-black dark. Glossy LCD screens make a slightly crispier picture than a matte finished outside filter can produce.

An LCD TV produces a picture by channeling the output of a very bright backlighting system through a series of optical filters. The capacity to control an LCD TV's backlight can help minimize eyestrain in a dark viewing environment. In addition, the brightness level of an LCD HDTV's backlight correlates to its power consumption. Lower backlight output to dark-room viewing levels can result in one-half to two-third less power consumed. Also, lower backlighting extends the lifespan of the lamp module.

Lastly, you should consider video port needs, particularly HDMI. High-Definition Multimedia Interface is the standard for digital video transfer in home-theater. The main benefits are the clarity of a digital signal and the audio and video that are streamed over a single cable connection. Common appliances that can be connected to an LCD HDTV through HDMI are DVD players and game consoles. Most LCD HDTV provides two to four ports.

Look for these different features when you are purchasing an LCD HDTV. This technical knowledge will help you decide which LCD HDTV meets your needs.

LCD HDTV - Technical Information

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Samsung UN22D5000 22-Inch 1080p 60Hz LED HDTV (Black)

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Bring full 1080p quality into any room with the Samsung UN22D5000 HDTV. Featuring USB ConnectShare capabilities, a simple USB port opens up thousands of entertainment possibilities from music, movies, and photos that you select. A Wide Color enhancer and bright LED lighting give you an incredible, vivid viewing experience. The 1.2" thin panel makes sure that this HDTV fits nearly anywhere.

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Panasonic VIERA TC-L42U30 42-Inch 1080p 120Hz LCD HDTV

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Hdtv - Part 3 - How Does Hdtv Work?

Hdtv signals can arrive at your home straight through a amount of broadcast mediums:  

Over the air straight through an antenna you setup in your or on your home   Cable service in Case,granted by a line off the electrical pole or similar location   Satellite Broadcast straight through a satellite antenna on or near your home.  

Hdtv

For Hdtv digital broadcasting, a schedule is first recorded at the source in the Hd format using Hd-formatted cameras and equipment. This Hd signal is then broadcast over the air and simultaneously captured and re-broadcast by service providers such as cable and satellite services. 

Hdtv - Part 3 - How Does Hdtv Work?

In order for your television to receive, decode, format and display the signal, you must have an Hdtv-compatible Tv. What is that? An Hdtv television is a Monitor that can provide the proper display of the Hdtv signal. It must have an Hdtv-capable tuner or receiver to decode the digital signal. That is it. Your Hdtv is ready. Sit back and enjoy.     

Well, not quite. Some Hdtv sets are naturally a Monitor just like the one attached to your personal Computer. It is naturally a disply - it does not have the capability to decode and format the signal to display. These will be listed as a Hdtv Monitor or Hdtv "ready". This is fine if you are going to provide an Hdtv formatted signal from other expedient such as a cable or satellite tuner box or Dvd/Hdtv Dvd player. I do not propose this as the prices and availability of Hdtv sets with receivers built in are becoming coarse place and very competitively prices with the monitor-only units.     

Antenna, Digital Cable or Satellite?  

The biggest advantage of going with broadcast via home antenna is that you programming is free of monthly charges. You will even note that each local broadcast channel has additional digital programming for you to view. For example, if you received the analog Channel 5 in the past, you will get Channel 5-1 digitally. But you will also note that most channels offer additional channels. Channel 5-2, 5-3 will also be ready with more to come in the time to come (based entirely on each stations schedule.    

The drawback is the dinky amount of channels and choice available. Not only that, but if you are not able to receive the broadcast channels clearly, you may have to achieve some 'antenna gymnastics' to be able to receive and watch some or all local channels.     

Satellite  

For satellite reception, the former drawback is 'rain-fade'. A close used to be the actual premise but for most providers, they will provide the premise service as part of your signup package.     

If you choose to go with satellite option, you must be able to expose the antenna so that it has a southern 'line-of-sight' to the satellite. Sometimes, the beam from the satellite is blocked by terrain, a tree or building for example. Before you opt for satellite, it is very advisable to visit to check first by contacting the satellite supplier for your location.

Rain fade is caused by the attenuation (reduction of received signal strength) caused by large rain clouds and the rain drops as they fall. This causes a reception disruption as long as the heavy rain is placed in the middle of your antenna and the satellite. These are normally short interruptions but can be very frustrating, especially if it occurs while your popular show or sporting event and must be carefully if you live in an area where there are frequent heavy rains or storms  

Cable  

Cable is similar to satellite in that it you pay for monthly subscription to give you way to a huge amount of broadcast channels.     

The drawback to cable is outages caused by down cable lines. This can happen in your front yard (from falling tree limbs for example) or some miles away due to damage from the electrical pole on which the cable is installed or electrical storm surge/strikes nearby. This does not happen often but oftentimes sufficient to be a concern when deciding on which way you want to go.     

As for my family, we have satellite. But we also have a quarterly broadcast antenna in our attic that will provide Hdtv signals to us in the event of rain outage so that we can closely monitor storms or risky weather (the exact type weather that will interrupt our satellite reception!) It is ideal to have a backup antenna for just such event, regardless of either you choose satellite or cable.)     

Next in Part 4, I will discuss the basic discrepancy in the middle of the old analog theory and today's digital broadcast plus dispel some myths versus facts.  

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Lg 42Lh55 42 Inch Lcd Hdtv

The 42Lh55 model, artificial by the innovative Lg, is packaged with enthralling features that, needless to say, have pushed the level of viewing contact to new heights. This 42 inch Lcd Hdtv houses an ultra-thin panel, which together with the Led backlight tech helps in rescue a great deal of energy. So this vigor Star 3.0 compliant Tv set is worth to be bought at a valuable price of 9.54 as listed in Amazon.com.

The much celebrated highlight of this Tv set is its TruMotion 240 Hz technology which, needless to say, eliminates the blurring and ultimately delivers blur-free crystal clear images. So, be assured that you will encounter no inconvenience while watching your beloved action-packed movies, sports or any other high-motion programs. Moreover, there is also the provision of a 2.4ms response time along with the 500cd/m2 peak glow and the Dynamic disagreement ratio of 80000:1. Altogether, these features add up to promote the image production and make them look natural. After all this Tv set comprises of a Full Hd 1080 pixel resolution which means that all your beloved movies and programs will be displayed in the best capability as possible. However, the black levels are not that good.

Hdtv

Besides the Isfccc Ready label, this Tv set also features the photograph Wizard straight through the assistance of which you can surely entrance the calibration process. Furthermore, you will be glad to know that this Tv set is also adequate with the enthralling Sensor highlight that automatically makes the adjustment in the photograph quality, after taking in notice the health of your environment. All the same, let us also not forget the Super-in Plane Switching Lcd panel highlight which contributes in delivering much faster response time along with an enhanced color contrast.

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