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Casual Articles - HDTV: An Advertising Myth De-bunked
Have you done your homework?No, we are not back at school, hating the dreaded homework as it stopped us doing other “better, more exciting things” To clients we ask this question regularly. With so much information at hand on moving to Spain, we ascertain what they know and listen to what they want.Seven years ago whilst doing our homework on this area, a cha
So every TV that can display 720 lines is HDTV ready?
No, and this is one of the key areas of confusion. The other important element of
the HDTV specification is that signals must be broadcast in 16:9 widescreen. This is
known as the aspect ratio, where '16' refers to the width of the image an
A medical policy is an essential product to be considered in managing risk in lives. Anyone can be a victim of critical illness/dread disease and it can happen at the most unexpected time and the person can be in deep trouble, not knowing what to do and whether something can be done about it and if so, how much it will cost.More and more people are seeking treatment a
One of the areas of greatest confusion is resolution. Resolution is defined as the number of pixels – the elements which make up a digital image – in an image and is usually quoted as a x b, where a is the number of pixels across the screen (horizontal) and b is the number of pixels up and down (vertical, also referred to as the number of lines). In this article we'll explain everything you need to know about the number of pixels required for HDTV.
HDTV Specification
The HDTV specification provides for three different types of HDTV, denoted by the
number of lines of resolution and the signal type. They are:
1080p (1080 lines, progressive scan)
1080i (1080 lines, interlaced)
720p (720 pixels, progressive)
Any TV not capable of displaying at least 720 lines is not 'HDTV ready' and any signal with fewer than 720 lines is not an HDTV signal.
Interlaced or Progressive?
The 'i' and 'p' in the HDTV specification refer to interlaced and progressive scan. The
analog TV we've been watching for years is interlaced. That simply means that each
frame of video (of which there are 30 per second in NTSC and 24 per second in PAL)
is split into two fields. Each field contains alternate lines of the signal (one has the
odd, the other the even) and is displayed for 1/60th of a second (1/48th for PAL).
Because it happens so fast, your brain interprets each frame as a single image.
Progressive scan signals have no fields, they simply display each frame in its
entirety for 1/30th (or 1/24th) of a second. This results in a higher quality image,
particularly noticeable in fast-action broadcasts such as sporting events.
So every TV that can display 720 lines is HDTV ready?
No, and this is one of the key areas of confusion. The other important element of
the HDTV specification is that signals must be broadcast in 16:9 widescreen. This is
known as the aspect ratio, where '16' refers to the width of the image an
CDs or compact discs are mediums of data storage. They are used to store information that can be accessed by a computer. They store video and audio files that require an audio and video player. A compact disc is made of plastic. A magnetic film is placed in between two plastic discs. This magnetic film is the most essential part and saves all the information.CD racks
HDTV Specification
The HDTV specification provides for three different types of HDTV, denoted by the
number of lines of resolution and the signal type. They are:
1080p (1080 lines, progressive scan)
1080i (1080 lines, interlaced)
720p (720 pixels, progressive)
Any TV not capable of displaying at least 720 lines is not 'HDTV ready' and any signal with fewer than 720 lines is not an HDTV signal.
Interlaced or Progressive?
The 'i' and 'p' in the HDTV specification refer to interlaced and progressive scan. The
analog TV we've been watching for years is interlaced. That simply means that each
frame of video (of which there are 30 per second in NTSC and 24 per second in PAL)
is split into two fields. Each field contains alternate lines of the signal (one has the
odd, the other the even) and is displayed for 1/60th of a second (1/48th for PAL).
Because it happens so fast, your brain interprets each frame as a single image.
Progressive scan signals have no fields, they simply display each frame in its
entirety for 1/30th (or 1/24th) of a second. This results in a higher quality image,
particularly noticeable in fast-action broadcasts such as sporting events.
So every TV that can display 720 lines is HDTV ready?
No, and this is one of the key areas of confusion. The other important element of
the HDTV specification is that signals must be broadcast in 16:9 widescreen. This is
known as the aspect ratio, where '16' refers to the width of the image an
Real estate stories radiate from the water cooler and cocktail parties like a brush fire out of control. Like early stages of fires, real estate transactions start out manageable, but occasionally real estate consumers fan the flames because of inexperience, and some real estate agents misplace the water buckets. How can consumers be more proactive before the fire starts? By
720p (720 pixels, progressive)
Any TV not capable of displaying at least 720 lines is not 'HDTV ready' and any signal with fewer than 720 lines is not an HDTV signal.
Interlaced or Progressive?
The 'i' and 'p' in the HDTV specification refer to interlaced and progressive scan. The
analog TV we've been watching for years is interlaced. That simply means that each
frame of video (of which there are 30 per second in NTSC and 24 per second in PAL)
is split into two fields. Each field contains alternate lines of the signal (one has the
odd, the other the even) and is displayed for 1/60th of a second (1/48th for PAL).
Because it happens so fast, your brain interprets each frame as a single image.
Progressive scan signals have no fields, they simply display each frame in its
entirety for 1/30th (or 1/24th) of a second. This results in a higher quality image,
particularly noticeable in fast-action broadcasts such as sporting events.
So every TV that can display 720 lines is HDTV ready?
No, and this is one of the key areas of confusion. The other important element of
the HDTV specification is that signals must be broadcast in 16:9 widescreen. This is
known as the aspect ratio, where '16' refers to the width of the image an
In the last year, I have seen membership subscription websites take the Internet by storm. Most subscription sites offer their subscriptions for a fee; however, a handful offer their information for free to anyone who will provide an email address and name.The focus of this article will be on the fee-based membership subscription web sites. Back in the Internet dark
So every TV that can display 720 lines is HDTV ready?
No, and this is one of the key areas of confusion. The other important element of
the HDTV specification is that signals must be broadcast in 16:9 widescreen. This is
known as the aspect ratio, where '16' refers to the width of the image an
The stock market system is an avenue of how to trade stock for listed corporations. As a corporation is formed, its initial shareholders are able to acquire shares of stock from the point of subscription when a company is created. When a company starts to be traded to the public, the primary market comes in where those who subscribe to the initial public offering (IPO) tak
So every TV that can display 720 lines is HDTV ready?
No, and this is one of the key areas of confusion. The other important element of
the HDTV specification is that signals must be broadcast in 16:9 widescreen. This is
known as the aspect ratio, where '16' refers to the width of the image and '9' to the
height. In other words, the height of the picture is 9/16ths of the width.
Some manufacturers promote TVs with a maximum resolution of 1024 x 768 pixels
as HDTV ready. This is incorrect. Although the total number of vertical pixels is
greater than the 720 minimum necessary for HDTV, at an aspect ratio of 16:9 it
would need 1280 pixels horizontally to display a 720-line HDTV picture. The only
solution is to either squash or crop the picture, neither of which is satisfactory.
So, in order to be properly HDTV capable, a TV needs to be able to display at least
1280 pixels horizontally as well as at least 720 vertically.
Remember before you buy to check that the resolution of your HDTV is at least 1280 x 720 pixels and don't rely on the logo on the box.
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