User:Habeeb Abdulraheem

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DIFFERENCES BETWEEN SDTV AND HDTV

Definition of SDTV and HDTV 

Standard definition television (SDTV) is a digital television (DTV) format that provides a picture quality similar to digital versatile disk (DVD). 
  High definition television (HDTV) are the two categories of display format for digital television (DTV) transmissions which are being commonly used.

The earlier times when we were less modernized so were TVs. The first generation TVs that came into evolution was standard version or also what we call today is Standard TV but as we grew up, our technology grew up with us. And nowadays we have something what we call is HDTV. Its better in every sense. There are a lots of differences in SDTV and HDTV and when I say a lot it is actually a lot and we will see how.

I am going to be explaining the basic differences that we come across in our daily lives, which includes

RESOLUTION:-

SDTV is basically an analog square box which first came and used the resolution of 4:3. SDTVs were big and bulky giant boxes but with the square image inside it. And now we have something what we call an HDTV which uses the resolution size 16:9 which is more than a Standard TV. It is a wide screen display of image which is rectangular in shape unlike our SDTVs and has more like a cinema look. * Now since older TV sets used 4:3 ratio there is a huge difference in the quality of picture we are looking at. We notice at times when we watch an old movie on our new sets of TV or HDTV we end up getting an empty bars around or at the top. They are called Pillar boxing or line boxing and that space will remain there until and unless we go to our tv settings and change resolution from 4:3 to 16:9. Now that the image is zoomed we find that empty space no more. This is all trying to show us the true aspect of the older version of the TV from 4:3 resolution on a new monitor that uses 16:9 ratio.

  • We get a bright sharp image where we can see even the smallest details very clearly and gives less trouble to eyes in an HDTV whereas the picture is not so clear one in Standard TV. It is less bright and sharp.
  • New television sets will be either HDTV-capable or SDTV-capable, with receivers that can convert the signal to their native display format. SDTV, in common with HDTV, uses the MPEG-2 file compression method
  • If we shrink the SDTV picture and we see the difference, SDTV is a lot smaller than HDTV. HDTV is 4 times the SDTV. This reason why the resolution of HDTVs are better than SDTV. We can put 4 SDTV pics inside one HDTV.) Because a compressed SDTV digital signal is smaller than a compressed HDTV signal, broadcasters can transmit up to five SDTV programs simultaneously instead of just one HDTV program. This is multicasting. Multicasting is an attractive feature because television stations can receive additional revenue from the additional advertising these extra programs provide. With today's analog television system, only one program at a time can be transmitted.


PIXELS:-

The main reason high-definition TV pictures look so much sharper and clearer than regular TV is HDTV's higher resolution. In today's world of digital TVs, resolution is measured in pixels, with more pixels providing higher resolution. Old-fashioned TVs had the equivalent of around 300,000 pixels, while today's HDTVs offer one to two million — up to six times more. All those additional pixels mean a huge jump in picture quality.

PRICES:-

Price difference, of course there is a lot of difference in price. Increase in quality requires well maintained and good quality hardware which requires high cost. Better the quality more the price. Back in the days when we had Standard TVs, usually big bulky boxes made of cathode ray tubes and fluorescent material and they no doubt needed much of the hardware in the form of cathode tubes and fluorescent and they were expensive too but now as we have HDTVs which have LEDs, LCDs and Plasma TVs. Such TVs uses hardware like HDMI cables which contributes a lot in the clarity.

HDMI and All kinds of connections:-

HDMI stands for high definition multimedia interface, its standard for connecting high definition video, audio devices. Around the time HDTV came about it was time for digital Revelation. What better way to do this is to consolidate all connector into a single connector enter the HDMI cable. So how does that work? Through an HDMI cable a transfer uncompressed video data and compressed or uncompressed digital video data to something that opens video or audio, so if you have a computer monitor, TV, projector or digital audio device like a receiver you are likely using an HDMI cable. HDMI production started in late 2003 for consumer use so it's been around for over 10 years UHD, this brought support for 4k video at 60 FPS, 32 audio channel support and 21 by 9 aspect ratio support for a wide angle theatre experience. There are also three HDMI cable connector’s types, HDMI, Many HDMI and micro HDMI. Full size HDMI as we mentioned before are used for TVs and revisers. Mini HDMI is used for video recording devices. Finally micro HDMI is most likely found in thinks like cellphones where smaller connector is needed to fit into a smaller form factor device. They use less hardware features and are not as bulky as cathode TVs but since they have improved quality and features they are expensive in the other way. Better the quality more the price.


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