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  • Answer Upon - Basic Comparison: AnalogTV, SDTV, EDTV, and HDTV

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    ere are three types of digital broadcast signal: SDTV, EDTV and HDTV. Aspect ratio for DTV is 16:9.

    SDTV: Like Analog TV, SDTV also 480i. Here's the advantage compared to Analog - SDTV can receive digital broadcast signals.

    EDTV: So far 480i resolution TVs worked fine. That is because TVs sizes are limited to 19 inch or 20 inch. But limit

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    There was a time when we had only one choice while buying a TV, i.e conventional Analog TV or CRT TV. But today we have so many choices. First of all we have our conventional CRT (cathode ray tube) TV. Along with this we have new choices like HDTV, EDTV and SDTV. But what is right for you? What are the main differences in them? Let’s try to understand the very basics about each of them.

    Conventional Analog TV: First of all let’s talk about our conventional CRT TV. Video screens of CRT TV contain 525 lines of resolution, although only 480 lines are displayed. These lines get painted with “interlacing” technique. In this technique first it paints all the odd numbered lines from 1 to 479. Immediately after that it paints all even numbered lines from 2 to 480. This standard analog TV format represents as 525 interlaced or 525i, this also represents with term “480i”. The aspect ratio of the screen is 4:3. This TV has inbuilt NTSC tuner, so by default they can’t tune Digital TV broadcast.

    Analog TV: With NTSC broadcasting was dominating since last 50 years. But it is time when DTV (Digital TV) gradually replacing the Analog one. Digital television is a new type of broadcasting technology that offers television with movie-quality pictures and Dolby digital surround sound, along with a variety of other enhancements. This Digital TV works with ATSC broadcasting instead of NTSC. Currently there are three types of digital broadcast signal: SDTV, EDTV and HDTV. Aspect ratio for DTV is 16:9.

    SDTV: Like Analog TV, SDTV also 480i. Here's the advantage compared to Analog - SDTV can receive digital broadcast signals.

    EDTV: So far 480i resolution TVs worked fine. That is because TVs sizes are limited to 19 inch or 20 inch. But limita

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    d the very basics about each of them.

    Conventional Analog TV: First of all let’s talk about our conventional CRT TV. Video screens of CRT TV contain 525 lines of resolution, although only 480 lines are displayed. These lines get painted with “interlacing” technique. In this technique first it paints all the odd numbered lines from 1 to 479. Immediately after that it paints all even numbered lines from 2 to 480. This standard analog TV format represents as 525 interlaced or 525i, this also represents with term “480i”. The aspect ratio of the screen is 4:3. This TV has inbuilt NTSC tuner, so by default they can’t tune Digital TV broadcast.

    Analog TV: With NTSC broadcasting was dominating since last 50 years. But it is time when DTV (Digital TV) gradually replacing the Analog one. Digital television is a new type of broadcasting technology that offers television with movie-quality pictures and Dolby digital surround sound, along with a variety of other enhancements. This Digital TV works with ATSC broadcasting instead of NTSC. Currently there are three types of digital broadcast signal: SDTV, EDTV and HDTV. Aspect ratio for DTV is 16:9.

    SDTV: Like Analog TV, SDTV also 480i. Here's the advantage compared to Analog - SDTV can receive digital broadcast signals.

    EDTV: So far 480i resolution TVs worked fine. That is because TVs sizes are limited to 19 inch or 20 inch. But limit

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    diately after that it paints all even numbered lines from 2 to 480. This standard analog TV format represents as 525 interlaced or 525i, this also represents with term “480i”. The aspect ratio of the screen is 4:3. This TV has inbuilt NTSC tuner, so by default they can’t tune Digital TV broadcast.

    Analog TV: With NTSC broadcasting was dominating since last 50 years. But it is time when DTV (Digital TV) gradually replacing the Analog one. Digital television is a new type of broadcasting technology that offers television with movie-quality pictures and Dolby digital surround sound, along with a variety of other enhancements. This Digital TV works with ATSC broadcasting instead of NTSC. Currently there are three types of digital broadcast signal: SDTV, EDTV and HDTV. Aspect ratio for DTV is 16:9.

    SDTV: Like Analog TV, SDTV also 480i. Here's the advantage compared to Analog - SDTV can receive digital broadcast signals.

    EDTV: So far 480i resolution TVs worked fine. That is because TVs sizes are limited to 19 inch or 20 inch. But limit

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    nce last 50 years. But it is time when DTV (Digital TV) gradually replacing the Analog one. Digital television is a new type of broadcasting technology that offers television with movie-quality pictures and Dolby digital surround sound, along with a variety of other enhancements. This Digital TV works with ATSC broadcasting instead of NTSC. Currently there are three types of digital broadcast signal: SDTV, EDTV and HDTV. Aspect ratio for DTV is 16:9.

    SDTV: Like Analog TV, SDTV also 480i. Here's the advantage compared to Analog - SDTV can receive digital broadcast signals.

    EDTV: So far 480i resolution TVs worked fine. That is because TVs sizes are limited to 19 inch or 20 inch. But limit

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    ere are three types of digital broadcast signal: SDTV, EDTV and HDTV. Aspect ratio for DTV is 16:9.

    SDTV: Like Analog TV, SDTV also 480i. Here's the advantage compared to Analog - SDTV can receive digital broadcast signals.

    EDTV: So far 480i resolution TVs worked fine. That is because TVs sizes are limited to 19 inch or 20 inch. But limitation of 480i resolution surfaced when same technology applies in large screen. Interlacing techniques does not work for larger screen. The visible scan lines and jaggies are annoying. The best solution is to avoid interlacing. Initially Interlacing was invented to save transmission bandwidth. But in current technology transmission in much higher rate is possible. So, there is no need of interlacing. It is possible to paint the lines sequentially from 1,2,3….up to 480, this is called “"progressive scanning". With this technology using same 480 resolution lines we can get better video quality, jaggies can be totally eliminated. This 480 lines progressive scan technique is commonly known as 480p. This concept in the consumer market is known as Enhanced Definition Television, or EDTV.

    Both SDTV and EDTV also receive the 16-by-9 broadcasts along with the 4-by-3 aspect ratio.

    HDTV: Even though we have digital broadcasting system SDTV and EDTV, maximum attention attracted towards HDTV. Main advantage here is increased number of scan lines on the screen. HDTV comes with three flavors 720p, 1080i and most recent one 1080p. As the name says first resolution displays 720 lines progressively and in the second one displays 1,080 lines interlaced. If we compare this two, we can say both of them are good. In general 720p is more appropriate for fast action as it uses progressive frames; alternative

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