LCD TV

LCD TV

LCD technology is relatively complex and improving all the time but is based upon the fact that liquid crystals are in their natural state twisted The ability of the crystals to allow light through can be altered by applying electric current Very simply put a light source is shone through a liquid containing crystals held between two polarised screens By applying the correct quantity of light passing through the desired display is produced
Smaller sets These will have aspect ratios of 43 although some models will have 169 widescreen display In built sound is likely to be simple stereo and refresh rates of 50Hz Medium sets Broadly speaking you can expect to pay between Rs 26304 and Rs 78913 for these larger 25 to 29 screen models but expect to find significant improvements in sound and picture quality Dolby Surround Sound is common and there are a higher number of models with a widescreen aspect ratio Large sets At this level you can expect a feature rich set with a 169 screen Dolby Virtual Surround Sound refresh rates up to 100 Hz and on some models additional decoders for HDTV and or Digital and terrestrial TV
Key featuresDepth Where LCDs really score over CRT models is in the physical depth of the television set Most are less than 3 deep and can be hung on a wall or from a ceiling This is a boon for those with smaller rooms or who want a release from the spaceeating demands of a CRT Screen size Smaller LCDs have been the norm adding pixels means more transistors and colours can appear slightly faded in larger models There is a large range of smaller sets between 14 and 19 As the technology improves more models over 30 are starting to appear Currently models over 40 are few and far between mainly because of the current difficulties of ensuring production quality with the ever increasing number oftransistors and pixels

Frequency There are many more choices than the 50Hz or 100Hz of CRT models Higher refresh rates will reduce the chances of pixels giving a ghosting effect which can occur when changing quickly from light to dark states Multifunctional displays LCD TVs are particularly suited to act as a computer screen Text and graphics will be made to look exceptionally sharp by their highresolution LCD TVs typically include connections for composite Svideo component video and one or more RGB SCART inputs Viewing distances While there are a lot of variables in these calculations viewing distances do vary according to the screen size Light source The source of the light which shines through the liquid crystals is important in any LCD set A damaged bulb can mean poor color balance and the end for your set Look either for sets with bulbs which can be replaced or for brands with proven longlife and reliability While extended warranties for electrical goods are generally poor value a replacement bulb warranty is definitely worth considering with these higher value items Some sets have a manufacturers warranty promising a television operating life express in hours Resolution information You might think that the higher the resolution the better the picture but this is not necessarily so VGA quality is what you will find on most standard TVs But LCD TVs may also have XGA 1024x768 pixels or with widescreen versions WXGA 1280x768 pixels Do not be fooled by the acronyms or the numbers check by looking at the picture itself Good indicators of picture quality are how realistic flesh tones appear the color contrast in particularly dark scenes and that high motion action scenes do not corrupt the picture Power consumption This is one area to watch with larger screen televisions All consume considerably more power than smaller sets However LCD screens consume considerably less power than their plasma rivals up to 30% less in some cases Accessories
Wall mountings These are ideal to make maximum use of a flat screen LCD TV They will add about 2 to the depth of the set Wall mounts that tilt for viewing anywhere in a room are also available as are articulating mounts which mean you can push the set flush to the wall when you are not using it Table stands It is worth knowing that table stands need to be suitable for the particular make of LCD TV you buy If a stand is not included with the set check carefully before you buy one that it will do the job.

DVD players

DVD players

A DVD looks like a CD but can hold both audio and video data It does this in a compressed format that the DVD Player then decodes to turn into a video signal The greater storage capacity of a DVD means that as well as the audio data you would get on a CD you also get a fulllength movie and extra data like subtitles index information and special features on the one disc
Film studios keen to protect release dates price differentials and the amount of information given in certain markets originally imposed a constraint on DVD Players by restricting which countries DVDs play in All prerecorded DVDs have one of six regional codes and regionlocked DVD Players can only play DVDs from the same region.In addition to regional format variation DVD formats can vary in other ways Common formats are DVDR DVD R DVDRW DVD RW and DVD Ram Not all DVD players can handle all the formats so it is worth checking before you buy which format it is that you will most likely use
Multidisc playersIf youre going to use your DVD player and associated sound system to play your CDs think about a multidisc player Sometimes referred to as DVD Jukeboxes they can store multiple DVDs or CDs
DVD audioAny DVD player will play CDs but some will play newer types of audio disc DVDAudio or SACD which offer better sound quality than a standard CD Only more expensive DVD players and hifi equipment are compatible with these discs
Digital surround soundUtilizes the information on the DVD to provide sound quality almost equal to cinema sound This is accomplished by converting the audio track into signals for each individual speaker usually five speakers and one subwoofer used for low frequency effect Dolby Digital and DTS are two popular surround sound formats
VCD playbackA popular movie format in Asia Video CDs or VCDs are cheaper and lower quality than DVDs They are stored on standard CDs which means they do not have room for extra features Many DVD players also play VCD Playback movies
Display photosCertain DVD players can also display digital photographs on your TV These must be stored on a compatible disc
ResumeIf you are going to view your discs repeatedly the ability to resume where you left off can save a lot of searching Multidisc resume means that the player will remember where to start on up to 30 discs
Bookmarks allow you to store favourite scenes or places in a disc More expensive players allow you to store bookmarks for several discs and remember them even if the disc is removed
ConnectionsThe connections between your DVD player and your TV and stereo can make a huge difference to the quality of the sound and picture These are the connections to think about
Component videoDVDs are encoded in component video If you have a TV with component video input buy a DVD Player with component video output Then connect the player and the TV with a threewire component video cable Before buying a player with component video output make sure you understand the subtle difference between component progressive and component interlaced Svideo connectionThis is the next best thing to component video and is an option on DVD Players that do not have component output and TVs that do not have component input You may need a separate cable for this but the picture difference should be worth it SCART leadsA common form of connection used in the UK is the SCART lead This handles both audio and video signals SCART connections are common on DVD players and newer TVs Gold plated SCART leads give a better connection A SCART connection will give you a better picture than SVideo and is close to component standard SCART cables are not usually included with players Analog RCA connectionsAvailable on almost all DVD Players this connection while not producing results quite as good as others will give you better pictures than your old VCR and importantly will connect DVD players to older televisions that dont have SCART connections Audio connectorsDVD players especially the more expensive models can have many audio outputs Outputs can include phono digital coaxial and digital optical If you are connecting to a separate hifi system this can be a very important feature
Progressive scanThe newest buzzword is progressive scan in the DVD Player market and while more expensive players include it it cant actually be used unless you have a digital TV With it your picture can be refreshed 60 times per second which makes for a sharper almost flicker free picture and is better than anything delivered by the alternative interlaced scanning method

MP3 Players

MP3 Players

MP3 players offer increased play time better ergonomics and more advanced features than competing portable audio devices From the smallest MP3 compact flash players which hold around 10 albums to harddrive models which can store your entire music collection the number of devices available keeps growing This buyers guide aims to help you choose the best MP3 player that meets your needs and budget Several types of MP3 player exist each having distinct advantages and drawbacks MP3 players fall largely into 3 types mp3 flash players hard drive players and multimedia players Depending on your requirements an integrated memory mp3 player may be better suited than a hard drive mp3 player or viceversa As such these are ideal players for every day listening for use in the gym or as an inexpensive introduction to portable MP3 players Styles vary ranging from tiny discrete devices that can be worn around the neck to more futuristic or elegant designs for the fashion conscious These players are truly a portable mp3 jukebox being capable of storing many songs and albums in a single compact player So Many users link mp3 players up to compatible car radios or purchase an addon travel speaker which transforms them into portable hifi systems Multimedia players use large hard drives and are physically bigger and heavier than other mp3 players This extra size and capacity is to accommodate a large colour screen for the displaying of photographs and their video playback capabilities This feature makes viewing your favorites movies the latest music videos or even your holiday film possible Music videos photos are all accessible from a single portable device
There are huge differences between mp3 players in terms of size and weight Players range in weight from around 40 grams for small integrated memory players to over 300 grams for a large multimedia player As a general rule the greater the capacity of the player the larger the size and the heavier the weight However improvements in storage technology are constantly reducing the size and weight of successive mp3 player generations Although the MP3 music format is the most widespread the majority of online music stores use other formats such as WMA or AAC The latter are more recent formats than MP3 and can offer better audio quality at the same size These formats also provide a royalties protection system which makes them very successful within musical spheres If you are thinking of using one of these services or if your music library contains formats other than the MP3 one you need to check the compatibility of the player Other audio formats include Ogg Vorbis and the proprietary Sony format ATRAC The battery for most flash memory mp3 players is generally integrated and noninterchangeable making it important to check their battery life Battery life can vary between several hours for a power hungry multimedia player to over 40 hours for some memory integrated MP3 players Some smaller players can be draw power from their connection to your computer USB and do not require a separate charger or batteries Charging times also vary depending on the player and the type of battery used A remote control offers usability advantages especially for hard drive and multimedia players which are usually impractical to take in and out of your pocket The remote controls for MP3 players can either be compact and limited to just the essential functions or feature rich and equipped with a small LCD screen displaying track information

Televisions

Televisions

Buying a television is no longer a simple affair The sheer variety not just in terms of brands but also in terms of the different types of television means that you have to be prepared for a long stint at the dealer outlets looking through a couple of dozen models before hopefully finding the one that suits you the best

However you could save yourself some time by knowing what components you need to look out for when you choose a television Some of the important elements of a Television that need to be taken into consideration are

SCREEN SIZE
This is one thing you need to be very clear about The screen size is largely dependent on the size of your room The screen size of a TV is always measured diagonally and ranges from 14 up to 71 inches To know the exact size of the display screen remove another inch or so from the published screen size

The screen size is also one of the most important determinants of the price of the television See table below for an approximate price range in relation to the screen size

SCREEN FLATNESS
With so many variants in the market you can choose from Regular which is the old style curved screen semi flat truly flat plasma or projection and LCD Each of these have a certain range of screen sizes and it is the combination of the flatness of the screen and the screen size that determines how high or low your TV is priced

The standard TV screen is curved The picture tube here is conventional without any special modifications to it It has all the normal features like adjustable colour contrast and brightness Other features include auto programming super and hyper band tuner timer DVD LD VCD compatibility child lock and a host of others features However a drawback of the regular screens is that the natural curve of the screen will pick up light sources throughout the room The prices of these models range from about Rs 3 800 to Rs 16 300 If you are looking at absolute budget buying then these are ideal These also have the charm of being old world as most of has grown up watching these

Semi flat
Typically flatter the screen better the view A Semi Flat TV includes the FST Flat Square Tube and the FFST Full Flat Square Tube FST is flatter compared to the conventional picture tube and the FFST is even flatter than FST However neither are absolutely flat Flatness of the picture tube is good because it considerably reduces reflections and glare from light sources in the room resulting in consistent and easy to watch pictures Although try not to place lamps and highly reflective objects close by Nearby windows should also be blocked for better viewing The prices of these models range from about Rs 5 000 to Rs 15 490 This is a healthy compromise It gives you an almost flat feel at very affordable prices

Truly flat
The Truly flat tubes have a completely flat screen A truly flat TV is of three types Flat Super Flat and True Flat televisions The Truly Flat TVs reduce the glare and give a wider viewing angle without any distortions and thus provide a better viewing experience The price for these start at Rs 4 990 and could be as high as Rs 1 18 000 This is the kind of television that could even double up as an accessory in your living room Stylish looking with a host of features this for those obsessed with quality and dont mind spending the extra few bucks for it

Home Theatre systems are now very popular and this offers a get together feeling to the whole family and gives a pleasure and experience of the real theatre feeling with music and sound systems speakers and movies High Definition TV is the most exciting thing to happen to television since black and white turned to color The main fact you need to know is that HDTV pictures contain four times as much picture definition as the standard TV pictures we watch currently This translates into a picture that is bursting with extra clarity sharpness depth and a realism that is impossible to believe without seeing it for yourself Sound quality is also typically far better with HDTV as most HighDefinition programmes contain 5 1 Dolby Digital surround sound There are currently six High Definition sources There are several camcorders now capable of recording in HighDefinition meaning you can record your own films in HD and watch them back on your HDTV . Up scaling This is a cheat method of obtaining HD pictures Some
DVD players and external processors are available that use special processing to add extra lines and pixels of detail to standard definition DVD pictures effectively turning them into HD Broadcasting If you buy an HD television you will need to connect a separate tuner cable or satellite box to enjoy the benefits of HighDefinition programming Currently the two primary sources for this are Sky which launches its HDTV service in May 2006 and Telewest which already broadcasts a number of HD programmes to a limited area The good news is that new DVDs will have enough capacity to hold all of the extra information needed to store a film in HD meaning watching a DVD at home will be as close as weve ever come to true home cinema The bad news is that there are two different formats vying for supremacy and of course neither format is compatible with the other This effectively means that if different movie studios back only one format their films may not be compatible with the DVD player you have bought The first format is called HDDVD and is backed by the DVD Forum the official DVD industry body and manufacturers like Toshiba NEC and Sanyo The second format is Bluray and was invented by Sony and backed by the likes of JVC LG Panasonic and Philips HD Consoles Sonys PS3 is due at the end of the year and will feature Bluray playback while Microsofts Xbox 360 delivers games in HighDefinition already and will be upgraded next year to play HDDVD DVDs
PC Internet There are several topend PCs now available capable of delivering HD files readily downloadable from the internet to HD screens HDTV Resolutions All digital displays make their pictures up using pixels where the more pixels a screen has the better the image This is called the screen resolution and it is well worth having a basic knowledge of the resolution formats if you want to make the most informed choice when purchasing your new HD kit The two formats for HighDefinition are 720p and 1080i The 1080i format contains 1080 lines of image information which is produced using the interlaced system This means the pictures on your television are produced in two separate sweeps with the odd lines 1 3 5 7 etc created during the first sweep and the even lines 2 4 6 8 etc created during the second The sweeps are so quick however that the human eye sees only one complete image The 720p format while having fewer lines of image information uses progressivescan technology where all the lines are created at once as opposed to two separate sweeps This ensures an exceptionally smooth image which is often preferable to 1080i for fastmoving footage Does Size Matter 169 vs 43 Television screens are available in two shapes regular 43 aspect ratio and widescreen 169 Regular pictures are four inches wide to three inches high while widescreen pictures are 16 inches wide to nine high Traditionally films are shot in widescreen format while TV is shot in regular hence the black bars that run across the top and bottom of a screen when you watch a film on a regular television
Bit Rate The bit rate is measured as bits per second and refers to the rate at which data is transmitted to your television As with resolution the more data the better the pictures and sound
Pixel Pixels make up your televisions image and are the smallest elements of a picture The more pixels in your picture the better m Bluray One of two HighDefinition formats for DVD Bluray was invented by Sony and is supported by manufacturers such as JVC LG Panasonic and Philips
Down Scaling The process of converting HighDefinition pictures to standard definition for transmission in standard definition programmes HDCP High bandwidth Digital Content Protection This is a copyright system that prevents unauthorized copying and distributing of copyrighted content Due to the quality of HighDefinition content the likes of Hollywood studios are becoming obsessed with HDCP to combat piracy and its likely that all nextgen HD sources will feature HDCP and thus only let you watch HD content at its maximum resolution for which you will need a DVI or HDMI connector HDDVD One of two HighDefinition formats for DVD HDDVD is supported by the DVD Forum and manufacturers such as Toshiba NEC and Sanyo

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