Hd Wallpapers Biography
Source (google.com.pk)
High-definition video is video of higher resolution than is standard. While there is no specific meaning for high-definition, generally any video image with more than 480 horizontal lines (North America) or 576 lines (Europe) is considered high-definition. 720 scan lines is generally the minimum even though many systems greatly exceed that. Images of standard resolution captured at rates faster than normal (60 frames/second North America, 50 fps Europe), by a high-speed camera may be considered high-definition in some contexts.
The first electronic scanning format, 405 lines, was the first "high definition" television system, since the mechanical systems it replaced had far fewer. From 1939, Europe and the US tried 605 and 441 lines until, in 1941, the FCC mandated 525 for the US. In wartime France, René Barthélemy tested higher resolutions, up to 1,042. In late 1949, official French transmissions finally began with 819. In 1984, however, this standard was abandoned for 625-line color on the TF1 network.
In digital camera terminology, high definition photo is a shooting mode found on some digital cameras that produces a 1920x1080 pixel high-definition (HD) quality photo that will perfectly fit a wide-screen HDTV (16:9) for full-screen viewing. High definition photos may also be available on some digital cameras when capturing motion picture recording (videos) using the camera, rather than still pictures. Digital cameras that have the high definition photo feature also will offer an optional component cable that you can use to connect the digital camera directly to the HDTV.
High-definition having a very clear picture and a wide screen.
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
Hd Wallpapers
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