Thursday, August 12, 2010

High Definition Television (HDTV)

by panji

High Definition Television or HDTV is the latest on TV technology. HDTV is better than most of the available TVs today in many ways; in sound, resolution and imaging. There are breakthrough technologies at work in a HDTV that made it more recommendable than the latest digital TVs.

HDTV is a digital television or DTV. Eighteen formats have been assigned to digital television, and presently, only six of the eighteen are considered HDTV. A true HDTV may have either 1080 interlaced lines or about 720 progressive scanned lines.

HDTV is not comparable to SDTV or Standard Definition Television. Though SDTV offers consumers a relevant improvement in picture resolution as compared to the usual digital TVs similar to a comparison of DVD to VHS viewing, it cannot compete with HDTV in the quality of both audio and video.

Favorite HDTV Features

Various technologies implemented on various HDTVs outclassed most of the technologies in digital TVs:

1. HDTV have about twice the picture resolution in terms of the vertical and horizontal as compared to any analog or digital TV available today. This makes the HDTV picture sharper and clearer than most of the TVs today.

2. HDTV have a wider screen with a screen or aspect ratio of about 16: 9 as compared to the 4:3 screen or aspect ratio of most analog or digital TVs.

An aspect ratio is the width of a picture screen relative to its height. So an aspect ratio of 4:3 means that the picture screen is 4 feet wide and 3 feet high. This means that the best picture screen available for HDTVs today is 16 feet wide and 9 feet high. This large screen will provide more detail resulting in a crisper image.

3. HDTV have also managed to reduce motion artifacts that includes ghosting or dot crawl on the screen.

4. HDTV also have a Dolby A3 Sorround System. It offers 5.1 independent channels of CD-quality stereo sorround sound. This is also referred as AC-3.

All in all, HDTVs displays pictures in a higher resolution with greater detail than most of the analog or digital TVs. Images are sharper and clearer and HDTVs offers the best  digital sound available to the consumer.

The HDTV Converters

HDTV converters are used to directly convert digital signals from a satellite broadcast into HDTV format for viewing in most analog TVs instead of implementing an analog conversion that is inferior in terms of picture and image viewing.

Digital Stream Analog Pass-through DTV Converter Box      LinkStyle LK-21946+LK-9134 Component Video & Audio To HDTV Converter Adaptor (Input interface: YPbPr/RGB + R-Audio-L + SPDIF Output Interface: HDMI)       PowerQ POWERHD-100 Indoor Portable Pop-Up Digital HDTV Antenna - Get FREE TV Broadcasts!       VideoSecu PC VGA Component Video S-Video Analog Audio to HDMI Converter Adapter PC to 1080P HDTV      Directv Hdtv Converter M3-Dx Only      VGA to Component Video Converter for HDTV's      Computer PC VGA Video + 3.5mm Audio to 1080P HDMI HDTV Converter Adapters Box w/1pcs HDMI M to M cable      GE 24775 Quantum HDTV Antenna      LinkStyle LK-219410 VGA+Ypbpr+3.5mm to HDMI Converter Switch For DVD STB XBOX PC to HDTV HD LCD Monitor      Philips SDV2740/27 HDTV/UHF/VHF/FM Digital Indoor TV Antenna

Simply put, HDTV converters avoid analog conversions of digital signals resulting to a much improved picture on analog TVs. The picture and image on an analog TV that used a HDTV converter is similar to the picture and image from a DVD movie that is played in an analog TV.

SImilarly, HDTV shows from satellite broadcasts can be shown in an analog TV using the HDTV converter. The picture and image will be inferior but at least are much more tolerable.

The Best Set-Up for HDTV

The most ideal set-up for HDTV is by receiving a pure digital signal directly via cable either by DirecTV or by the Dish Network. These pure digital signals are received by a digital receiver and are displayed on a digital TV set.

Consumers that are looking for the best can opt for a front or rear projection HDTV set or also a plasma set with a similar 16:9 aspect ratio.

People who wants to test the HDTV technology but are not really sure of what they really want can opt for a HDTV-ready digital TV instead. HDTV-ready TVs are much more cheaper than the actual HDTVs.

These HDTV-ready digital TVs have the standard aspect ratios of 4:3. It lacks, however, the HDTV decoder that will interpret the HDTV signal. A stand alone HDTV decoder, however, is available if a consumer wants to be able to upgrade the display for HDTV broadcast.

The out of the box HDTV systems usually have a high definition tuner built inside it. Though, the addition of high definition tuner makes it more expensive, it nonetheless an advantage that is made for the convenience of the most enthusiastic viewer.

Sharp LC19SB27UT 19-Inch 720p LCD HDTV, Black      Panasonic TC-L32X2 32-Inch 720p LCD HDTV with iPod Dock      LG 32LH30 32-Inch 1080p LCD HDTV, Gloss Black      Panasonic VIERA X1 Series TC-L26X1 26-Inch 720p LCD HDTV

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