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The Analog Protection System (APS), also known as Analog Copy Protection (ACP), Copyguard or Macrovision, [1] is a VHS [2] and DVD copy protection system originally developed by the Macrovision Corporation. Video tapes copied from DVDs encoded with APS become garbled and unwatchable. The process works by adding pulses to analog video signals to ...
TV-Lift. A Television-lift, TV-lift for short, or also TV lifting system, is an electrically powered mechanical system which lifts or moves televisions vertically or horizontally out of furniture, ceilings or partition walls. The main reason for using a TV lift system is in order to integrate a television into the existing interior design of a ...
The result was a lined picture with darkness between each horizontal scanned line, reducing picture brightness and contrast. Larger screen sets often used a spot wobble oscillator, that slightly elongated the scanning spot vertically at high frequency to avoid this line separation effect without reducing horizontal sharpness.
Screen protector. A screen protector, yet to be installed. A smartphone with a screen protector installed. A screen protector is an additional sheet of material—commonly polyurethane or laminated glass—that can be attached to the screen of an electronic device and protect it against physical damage.
The shadow mask is installed to the screen using metal pieces [348] or a rail or frame [349] [350] [351] that is fused to the funnel or the screen glass respectively, [256] holding the shadow mask in tension to minimize warping (if the mask is flat, used in flat-screen CRT computer monitors) and allowing for higher image brightness and contrast.
Telescreen. Telescreens are two-way video devices that appear in George Orwell 's dystopian 1949 novel Nineteen Eighty-Four. Omnipresent and almost never turned off, they are an unavoidable source of propaganda and tools of surveillance. The concept of the telescreen has been explored as a metaphor or allegory for the erosion of privacy in ...
Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.
A 2.35:1 film still panned and scanned to smaller sizes. At the smallest, 1.33:1, nearly half of the original image has been cropped. Pan and scan is a method of adjusting widescreen film images so that they can be shown in fullscreen proportions of a standard-definition 4:3 aspect ratio television screen, often cropping off the sides of the original widescreen image to focus on the ...
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