The logos that indicate the presence of “High Definition”, a Technical terminology that often puts us in some hype about the product. So sudden is the rapid evolution of technological systems. In fact, we are often familiar with many terms without knowing the full meaning, sometimes even the presence of a “technology” in new product that we are buying is considered as a fashion. If everyone is talking about high-definition television we tend to buy one which will have high-definition. But really for our own needs. It is necessary to search for the product which is more “fashionable” Or maybe it is better to understand a bit more of what the various “symbols or logos that are in products refer to? Well, then I suggest a small summary of the most important logos that are present in products.
What is HD? For HD, or High Definition, is the technology that gives better quality sound and high quality video, obviously the technology is often applied to other types of media player (audio-video) such as TVs, Blu – ray, etc.
Deepen: For high definition video systems, this means the increase in image resolution, which is to increase the number of pixels (dots of light) on the surface of the video, so you can get sharper images and more fluid, the coupling of this technology with others of different nature, gives the colors more “alive” and real. A normal TV resolution “standard” usually has a resolution of 720 x 576 pixel screens with High Definition system having a resolution of 1280 x 720 can now reach up to 1920 x 1080, and undoubtedly much higher. The main difference, however, is not only by pixel but also from a different system of “writing” of the pixels themselves.
The marks that we can find in high-definition systems are: 720p, 1080i, 1080p (the “i” stands for interlaced and the “p” stands for “progressive”).
Here are the logos for high-definition:
The logos of High Definition HD Ready:
This indicates that the contents are displayed in 720 lines, the TV equipped with this system accept HD video formats 720p and 1080i but can not display full-resolution content from the art of 1080p. A TV showing this symbol should be a widescreen and must have a component analog and HDMI connection.
HD Ready 1080p: This logo indicates that the system supports the HD-ready and also the most advanced format with 1920 x 1080 pixels. The presence of this technology include among others another very important factor, the image is displayed with a time of playing lower, thus facilitating the flow of the video.
HDTV or HD TV: This symbol indicates a television that, in addition to possessing the qualifications required by the HD Ready logo, is fitted with a digital terrestrial HDTV tuner (MPEG 4 – H264). This means that you can receive and display HD content without necessiriamente connect an external decoder. The abbreviation HDTV 1080p has the same meaning of the logo HDTV, also supports the full High Definition (Full HD) resolution with 1920 x 1080 and a 24p content (ie movies on Blu-ray Disc).