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An extended version of SMPTE Color Bars signal, developed by the Japanese Association of Radio Industries and Businesses as ARIB STD-B28 and standardized as SMPTE RP 219:2002 [15] (High-Definition, Standard-Definition Compatible Color Bar Signal) was introduced to test HDTV signal with an aspect ratio of 16:9 that can be down converted to a ...
The term "SmileBox" is a registered trademark [4] used to describe a type of letter-boxing for Cinerama films, such as on the Blu-ray release of How the West Was Won.The image is produced by using a map projection-like technique to approximate how the picture might look if projected onto a curved Cinerama screen.
[11] [12] Blu-ray Discs include the letterbox bars in the encoded 16:9 picture, which means widescreen movies, without additional processing, will be shown with black bars on top and bottom. The company Folded Space, also initiated by Panamorph, was working on a proprietary solution, MFE, [ 13 ] [ 14 ] to put anamorphic 21:9 video onto Blu-rays ...
DVD producers can also choose to show even wider ratios such as 1.66:1, 1.75:1, 1.77:1 and 1.78:1 [1] within the 16:9 DVD frame by hard matting or adding black bars within the image itself. The 16:9 aspect ratio was used often in British TVs in the United Kingdom in the 1990s, and is also used in smartphones, laptops, and desktops.
These may also use other aspect ratios by cropping otherwise black bars at the top and bottom which result from cinema aspect ratios greater than 16∶9, such as 1.85 or 2.35 through 2.40 (dubbed "Cinemascope", "21∶9" etc.), while the standard horizontal resolution, e.g. 1920 pixels, is usually kept.
Standard PAL receivers will receive such a broadcast as a 16:9 image letterboxed to 4:3, with a small amount of color noise in the black bars; this "noise" is actually the additional lines which are hidden inside the color signal. Clear-Vision supports an equivalent widescreen system for NTSC analogue broadcasting.
The pillarbox effect occurs in widescreen video displays when black bars (mattes or masking) are placed on the sides of the image. It becomes necessary when film or video that was not originally designed for widescreen is shown on a widescreen display, or a narrower widescreen image is displayed within a wider aspect ratio , such as a 16:9 ...
[3] [4] The name "Letterboxd" is an allusion to letterboxing, the practice of placing black bars on the edges of a screen to preserve a movie's original aspect ratio. [5] Buchanan and von Randow launched an invitation-only beta version on 24 April 2012 [ 6 ] [ 7 ] and opened the site to the general public on 8 February 2013. [ 8 ]