There are different types of matte and glossy coatings, each of which has its own advantages and drawbacks. Information about the type of coating of the display. The time in milliseconds that the display needs to visualize the signal input. Information about the maximum vertical viewing angle, within which the image on the screen is of acceptable quality.ĭesktop monitors and smart TVs experience a latency/lag in visualizing the information. Information about the maximum horizontal viewing angle, within which the image on the screen is of acceptable quality. HDR expands the contrast ratio (peak luminance and minimal black levels) and color palette to achieve more details across the whole image - from the darkest parts to the brightest ones, which results in more realistic and life-like image. It is used in digital cinema and has a much wider gamut than the sRGB. There are various backlights such as CCFL, LED, WLED, RGB-LED, and etc.ĭCI P3 is a color space, introduced in 2007 by the SMPTE. The type of backlight determines the image quality and the color space of the display. The backlight is the source of light of the LCD display panels. The percentage of the approximate area, taken by the active part of the screen, to the total front area. With the decrease of the display size and the increase of its resolution, the pixel density increases. Information of the number of pixels in a unit of length. In displays, which have a native resolution (the TFT ones, for example), the pixel pitch depends on the resolution and the size of the screen. The pixel pitch shows the distance from the centers of two neighboring pixels. A higher resolution allows the display of a more detailed and of higher quality image. Information about the number of pixels on the horizontal and vertical side of the screen. Some of the standard and widely used aspect ratios are 4:3, 5:4, 16:9 and 16:10. The ratio between the horizontal and the vertical side of the display. The maximum number of colors, which the display is able to reproduce, depends on the type of the panel in use and color enhancing technologies like FRC. They provide 18-, 24-, and 30-bit color, respectively. The most widely used panels are those with 6, 8, and 10 bits for each of the RGB components of the pixel. The image quality depends directly on the type of the display panel used. Each has its own specific features - viewing angles, color reproduction, response time, brightness/contrast, production cost, etc. If the manufacturer does not provide such information, the height is calculated from the diagonal and the aspect ratio. If the manufacturer does not provide such information, the width is calculated from the diagonal and the aspect ratio.Īpproximate height of the display. If the manufacturer does not provide such information, the diagonal is calculated from the width and height of the screen.Īpproximate width of the display. Often this is the rounded value of the actual size of the diagonal in inches.Īpproximate diagonal size of the display. Size class of the display as declared by the manufacturer. Use a specified DVD repair tool or ask for help from the DVD-rental store if the problem still exists.Display Information about the main characteristics of the display - panel, backlight, resolution, refresh rate, etc. When the DVD disc has visible scratches, you can try the method of cleaning DVD disc above or polish the DVD using Vaseline, Windex, peanut oil or baking soda toothpaste. If there are scratches or other damages on the interface of the DVD disc, you need to repair the DVD disc. If the DVD disc works on one of them, this DVD not playing issue is most probably due to your equipment.ī: Play a different DVD disc on your current equipment, if it can play normally, your previous DVD disc is very likely damaged. You can purchase and insert a lens cleaning disc into your DVD player and follow the manual to clean the laser lens in the DVD player's DVD drive.Ī: Play the DVD disc on two different machines. Finally, dry the DVD and test it on your DVD player.ĭirty laser lens of the DVD drive is also a common reason causing that DVD won't play. First mist the surface of the DVD disc with isopropyl alcohol, then use the microfiber cloth to wipe the alcohol off in straight lines, and rinse the DVD to wash the extraneous materials. If not, you can clean the disc using isopropyl alcohol, water, as well as a microfiber cloth. So the first thing you need to make sure is that your DVD disc is clean. If a DVD disc is interfered with smudges, fingerprints, dirt, dust or other extraneous materials, it could not be recognized and read correctly, which will result in playback failure.
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