Guide to watch HDTV with PC
ByHigh definition is the new standard for viewing high-quality transmissions. It ‘called HDTV (High Definition TV), while the current system has been redefined SDTV (Standard Definition TV).
The differences between the current HDTV and SDTV are essentially two: in aspect ratio, ie the ratio between width and height, and resolution. The aspect ratio of HDTV is 16:9 in fact, compared with 4:3 ’s SDTV stands. This implies a more rectangular screen, more like the cinema, compared to the current screen that looks more square. The main difference however in the resolution.
The current system for SDTV we have in Europe, called PAL, has a resolution of 720×576 pixels (about 0.4-megapixel total).
Instead HDTV has a resolution much greater:
720p format, called HD Ready. The resolution is 1280×720 (about 0.9 megapixels), with progressive scanning (not interlaced as in the current PAL, making this the image is updated every time for interaction, it is so much more stable in the eyes of the beholder).
1080i format. The resolution is 1920×1080 (about 2 updates 1 megapixel each) interlaced. The image is updated in two stages, first the even lines and then the odd. This creates flickering well known in current TV.
1080p format, called HD Full. The resolution is 1920×1080 (about 2 Megapixel) with progressive scan.
To view movies in high definition transmutes the PC, you need a compatible TV with high definition (HD ready or HD FULL) connected to the computer (usually via a VGA cable, since many have a VGA input HD TV, or DVI, if your TV supports this input), or a monitor recently, at least 21 “widescreen (it’s certainly possible with a display of magnitude lower, and not widescreen, but you lose most of the effect of film footage HD).
Often the resolution used by the PC and displayed on the TV is 1366×768 (supported by most video cards in recent years may be necessary to update the drivers). It ‘a resolution slightly greater than the currently most popular standard, the 720p, however, is sufficiently close to the TV’s scaler is not actuated, or face a minimum. The scaler is a particular feature of the HD TV capable of reinterpreting the signal is adapted to a different resolution (but adapted HDTV). Since the intervention of the scaler gives a slight degradation of the video image, it is clear that unless the scaler begins operation, the better.
The hardware requirements for viewing a video in HD Ready is not very high. 2 GHz processor (even single core) and good video card is sufficient. For a movie in Full HD, however, the requirements are doubled.
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