Television or Telly or Tv is a communication medium that is meant to show pictures or images in two or three dimensions with sound. It transmits the images in moving format with a monochrome either in colour or in black and white. Television forms an important part of mass media that is used entertainment, news, sports and advertising. Experiments for the invention of Television begins in the year 1920s. From Standard Definition (SDTV) to Enhanced Definition (EDTV) to High Definition (HDTV). It has different resolutions like in 420 p, 720p, 1080p etc.
EDTV vs HDTV
The difference between EDTV and HDTV is that EDTV supports only 480 pixels format while HDTV supports both 720 pixels and 1080i. The full form of EDTV has Enhanced Definition Television, and the full form of HDTV is high-Definition Television.HDTV is considered superior to EDTV because of its higher picture quality and availability in different formats.
EDTV means Extended or Enhanced Definition. It is a market terminology used to define the specific format for television and various devices. EDTV comes somewhat middle of SDTV and HDTV. Because it provides better picture quality in comparison to SDTV while it is lower than HDTV. The term EDTV is used because it means that it can display 480 or 576 lines of signals in a progressive scan.
HDTV means Higher Definition. The name suggests that it is meant to provide a higher picture quality than others, i.e., from SDTV and HDTV. The word HDTV is being used since the year 1936, but now in the modern era, it is used to describe the generation following. It is the de facto standard that is used everywhere now from cable television, satellite television, terrestrial broadcast television, and Blu-ray Discs. It can be broadcasted in different formats like 720p, 1080p, 1080i.
Comparison Table Between EDTV and HDTV
|Parameters of Comparison||EDTV||HDTV|
|Scan||Progressive scan||Interlaced displays & Progressive scan.|
|Resolution||480p||720p and 1080i|
|Compatibility||DVDs, TV programs, and DVD players are compatible.||All these are incompatible.|
What is EDTV?
EDTV requires more bandwidth than SDTV. Because of higher bandwidth than SDTV, it can transfer the additional data transfer. For progressive scan in EDTV, it should be connected to three connectors, i.e., a VGA connector, component video cable, or a DVI or HDMI connector. This connection is used for video game consoles and DVD players. For broadcasting in the television, EDTV uses the same connectors as HDTV.
Because EDTV uses less bandwidth than HDTV. It can broadcast several channels at once from one station. It uses non-square pixels just like EDTV. The number of horizontal pixels used in EDTV and SDTV is the same, i.e., 16:9 and 4:3. But sometimes 16:9 is preferred and is called anamorphic widescreen. EDTV has two full forms that are Enhanced and Extended definitions. Both of these terms are shorthand terms for devices and DTV.
EDTV has less clarity while broadcasting the high definition quality. When EDTV uses standard broadcast, i.e. 480i, then it has a greater capacity to retain the greater quality. Various types of DVDs, players and television programs are compatible with EDTV. Since it uses progressive displays, it paints all of the lines in one pass, which is the same as SDTV and different from HDTV.
What is HDTV?
The word HDTV has been used since 1936. But in the modern era, it has proper use, like it is referred to as the superior version of SDTV and HDTV. It is way past better than the other generations. Because of its higher image resolution, it has become the standard video format in cable television, satellite television, terrestrial broadcast television, and Blu-ray Discs. It can be transmitted in various formats like 1080p, 1080i and 720p.
HDTV is transmitted at two megapixels per second. It is five times faster at transmitting the pixels than SDTV. Because of its better resolution, it’s clearer picture quality. Interlaced displays and progressive scan displays both are used in HDTV. Different scans and higher frame rates result in the better rendering of fast motion and less flicker. HDTV became popular in the year the 2000s in every household.
Earlier HDTV broadcasting used analogue signals, but now it uses video compression and is transmitted digitally. It is not compatible with different devices like DVDs, players and programs. HDTV system is categorised according to three parameters, frame rate, frame size and scanning parameters. If all the parameters are used, they are followed according to the following form. HDTV can be recorded to W-VHS to an HDTV-capable digital video recorder like in Sky HD’s set-top box, Dish Network’s VIP 622, DirecTV’s high-definition digital video recorder, or VIP 722, D-VHS or digital-VHS, etc.
Main Differences Between EDTV and HDTV
- EDTV uses only one kind of display that is progressive scan. HDTV uses two kinds of displays that are interlaced displays & Progressive scans.
- EDTV uses the 480 p resolution, and it has better picture quality than SDTV. HDTV uses three types of resolution 720p, 1080p and 1080i.
- While converting high definition broadcast, EDTV provides less clarity. While HDTV provides extra clarity on transmitting.
- EDTV has greater quality while watching the standard format, i.e.480 i. HDTV has low quality.
- DVDs, TV programs, and DVD players are compatible with EDTV. While all of these are incompatible with HDTV.
Both EDTV and HDTV are subservient to each other. The difference is there in different generations. Both are very similar to each other, like both uses progressive scans. Both are better than their previous generations. EDTV has an aspect ratio of 16:9 or 4:3. EDTV can transmit in high definition broadcast, which SDTV cannot. HDTV outshines SDTV because of its better picture quality and higher resolution than EDTV and SDTV. EDTV has 480 or 560 lines, and HDTV has two 720p, which is progressive scan and 1080i, which is interlaced scan. HDTV is far better than EDTV and is more popular than it is in the modern era.