Enter a keyword to
search this site.









Click to return
HDTV Update
HDTV HAS BEEN GETTING MEDIA ATTENTION FOR YEARS, AND NOW IS POISED FOR REAL GROWTH IN THE NEXT FEW YEARS. IF YOU HAVE LOOKED AT ONE OF THESE SETS, YOU CAN SEE THAT THEY HAVE SHARPER IMAGES, AND A WIDER DISPLAY.

HDTV HAS LIFELIKE PICTURES AND DIGITAL SOUND. THE HIGHER RESOLUTION PRODUCES CLARITY NEVER SEEN BEFORE. MOVIES RETAIN THEIR ORIGINAL WIDTH, ENHANCING THE HOME THEATRE EXPERIENCE. YOU WILL ALSO SEE MORE OF A FOOTBALL FIELD, OR OUTDOOR NATURE SHOTS.

FIRST WAS ANALOG TV, WHICH HAS 480 SCAN LINES, BUT BASICALLY 240 WHICH ARE EXCHANGED WITH ANOTHER 240 TWICE A SECOND. THAT'S WHY YOU CAN ACTUALLY SEE THE LINES MAKING UP THE PICTURE ON A REGULAR TV WHEN YOU GET CLOSE TO IT.

THIS LEVEL OF RESOLUTION WAS STATE OF THE ART 50 YEARS AGO, BUT NOT TODAY. IN FACT, IT REPRESENTS THE LOWEST RESOLUTION YOU WOULD EVER SET A COMPUTER AT, 640 BY 480. MOST PEOPLE USE 800 BY 600, OR EVEN 1024 BY 768. THESE HIGHER RESOLUTIONS MAKE OUR STANDARD TV PICTURE PALE IN COMPARISON.

MANY NEWER SATELLITE DISH SYSTEMS, AND DVD PLAYERS USE DIGITAL TECHNOLOGY, BUT IT IS CONVERTED BACK TO ANALOG TO WORK ON REGULAR TVS, THUS LOSING QUALITY. IT LOOKS BETTER THAN VHS TAPE, BUT WOULD BE TWICE AS GOOD IF THE CONVERSION TO ANALOG DID NOT HAVE TO HAPPEN. IN THE NEAR FUTURE, ALL TV SETS WILL BE DIGITAL, AND THE SIGNAL WILL REMAIN PURE FOR THE BEST PICTURE.

HDTV THEREFORE USES DIGITAL SIGNALS, WHICH USE A METHOD TO VIRTUALLY ELIMINATE THE SCAN LINES THAT WE SEE IN OUR CURRENT PICTURES, AND AGAIN, MAKES THE IMAGE WIDER. THE SCREEN BEING WIDER IS NOT ONLY BECAUSE MOVIES ARE SHOT IN THIS FORMAT, BUT BECAUSE WE ACTUALLY SEE THAT WAY.

IN CALCULATING THE PIXELS PER SCREEN, WHICH ARE THE TINY INDIVIDUAL COMPONENTS THAT MAKE UP THE PICTURE, ANALOG COMES IN AT ABOUT 210,000 PIXELS. HIGH DEFINITION IS CAPABLE OF 2 MILLION PIXELS, FOR 10 TIMES MORE DETAIL.

ONE REASON THAT HDTV HAS BEEN COMING ALONG SLOWLY THE LAST SEVERAL YEARS, IS BECAUSE OF THE NEED FOR ALL NEW EQUIPMENT, INCLUDING CAMERAS, REMOTE BROADCAST UNITS, CONTROL ROOMS, ETC.

RIGHT NOW THE MAJORITY OF HDTV SETS SOLD ARE CALLED HD MONITORS, MEANING THAT THEY DO REQUIRE AN EXTERNAL SOURCE TO ACHIEVE HIGH DEFINITION. IF YOU ARE A MIDCONTINENT CABLE SUBSCRIBER, THEY NOW HAVE HIGH DEFINITION CONVERTER BOXES. SATELLITE DISH OWNERS NEED TO UPGRADE THEIR DISH AND RECEIVER, AND CONVERTERS ARE AVAILABLE FOR LOCAL BROADCASTS LIKE KELO AND KSFY.

KEEP IN MIND THAT A DIGITAL TV WILL GIVE YOU A MUCH BETTER PICTURE ON GOOD SOURCES LIKE DVD AND DIGITAL CABLE OR SATELLITE, EVEN IF YOU DON'T BUY OR LEASE THE HD CONVERTER RIGHT AWAY. PHASE OUT OF ANALOG BEGINS IN 2006.

Greg Thill
M.E.S. Home Theatre




Site Map    |     Copyright    |     Privacy    |    Company Info    |     Contact Us
Complete On-Line Product Listing