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Thread: How to choose your LCD flat screen TV

  1. #1
    Join Date
    Oct 2005
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    792

    How to choose your LCD flat screen TV

    LCD or Plasma?

    Ending time of wisdom, LCD and Plasma technologies have evolved considerably in recent years, the arguments were the warhorses of the two supporters are gone, or almost, as it opts for top models or 'entry.

    The color

    Broadly speaking, plasma technology offers richer colors and more natural. Some LCD TVs offer high quality, however this level of backlight that the gap is narrowing considerably. In against part, entry-level LCD palette afiche lesser extent, with drifts of color.


    Historically, plasma screens have a head start on the LCD on the shades of black and show a better contrast ratio. But from a purely visual level, this advantage may be that in the dark. The records of black may be better on LCD screens in a bright room. Obviously, this information can be disproved by the exceptions relating to the quality of the TV.

    Lifetime consumption

    In terms of lifespan, the Plasma has made progress since its longevity is similar to that of LCD screens: approximately 25 years at 4 hours of use per day. However, it is advisable to opt for a plasma screen if you live in high altitudes. A diagonal equivalent, the LCD takes advantage consumption. Count an average of 200 Wats for the 32-inch, 250 Wats for the 40-inch and 350 watts for 52 inches.

    Use

    If you are keen on Home Theater Plasma is an excellent choice. Also it keeps the price advantage over LCD in very large slabs (> 46 inches). The tiles are also less affected by the phenomenon of tagging residue still image disappears more or less quickly depending on the model (Logo channel scoreboard video games ...), a few years ago.

    The LCD is more suited to everyday use and heterogeneous (TV, VHS, DVD, video games). But manufacturers are increasingly offering technology-oriented films that tend to the depth of black and natural colors of the Plasma.

  2. #2
    Join Date
    Oct 2005
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    2,393

    HD Ready or Full HD?

    SD and HD: what's that?

    It should be explained in the preamble a TV CRT displays a 720x576 pixel resolution (576 lines by 720 columns), that the HD Ready screens mounted mostly at 1366x768 pixels (768 lines by 1366 columns), while the Full HD models (also known as HD Ready 1080p) can display 1920x1080 pixels (1080 lines by 1920 columns).

    TV analogue (terrestrial) or digital (TNT, cable, satellite, ADSL), the VHS, DVD and consoles like PS2, Wii or Xbox 576 are distributed in rows, we talk about image for SD Standard Definition . Consoles PS3 and Xbox 360 last-generation games provide 720 lines, sometimes in 1080, while high-definition movies in Blu-ray or HD DVD are broadcast in 1080 lines, this time images for HD "High Definition".

    Uscaling (Scale)

    To view an SD of 576 lines on a screen HD Ready or Full HD, must be increased or rather interpolate in the number of rows (and columns) missing: either 768-576 = 172 lines for HD Ready TVs and 1080 -576 = 504 lines Full HD screens. This is known as upscaling of SD sources, this scaling is not immune to the phenomenon of image degradation, more marked on Full HD TVs for those stamped HD Ready.

    The quality of the upscaling depends only electronic components embedded in the televisions. Broadly speaking, the more you put the price, the more these technologies scaled will be good.

    HD ready or Full HD?

    If you plan to use your TV to watch VHS, DVD, SD TV, or to play on your console, we advise you HD Ready TVs which have less processing to be carried out to scale sources SD. These tiles can still enjoy very pleasantly sources encoded HD lines in 1080 (Blu-ray, Next-gen console ...). Their affordable rates you will also choose a larger screen size.

    But if you want to move into an era of true high definition, by subscribing to tender your HD TV, playing the latest Next-Gen consoles and, of course, you have a Blu-ray, more is moving towards Full HD screens. You will be put against the price for it to display SD sources as good or better than the HD Ready TVs.

    Alternative circuits scaling and deinterlacing TV

    Good picture quality SD source on an HDTV requires a good scalability and good deinterlacing the image.

    Certain devices (DVD players, Blu-ray or HD DVD, audio video amplifier) equipped with HDMI connectors can handle these treatments upstream. The Playstation 3 offers for example a very good DVD upscaling the image from these discs will then be well defined even on Full HD TVs input range.

    Televisions good embarking electronic (scaling, deinterlacing) will nevertheless treatments on all sources, including the tuner.

  3. #3
    Join Date
    Oct 2005
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    2,393

    What size for my screen?

    What size for my screen?

    The answer to this question depends mainly on two parameters:

    • The distance from your couch on your TV
    • The resolution of your source (SD, HD Ready or Full HD)
    • The size of your screen


    Finesse of the best Full HD images (1080 encoded line) reduces the distance between your TV and your couch. SD images require against over backwards to hide the different degradation of the image processing scaling (pixelization, staircase effect, noise ...)

    Following soon

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