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Brightness in video refers to the luminance (Y) portion of a video signal. It describes how bright a video picture, or location within the picture, is. In an analog monochrome (black & white) video signal's active raster, brightness is the only picture information conveyed, represented directly by the voltage of the video signal. The brightness signal varies as the picture is drawn from top to bottom and left to right, depending on picture subject. In analog color video, brightness information is accompanied by color hue and color saturation information.

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Video Cross Hair & Video Cross Line Generator & XY Positioner - 620 Series
Dynamic Video Noise Reduction System 449 Series
Video Chroma Key, Video Color Key, Color Separation Overlay, Green or Blue Screen, Background or Backdrop, Video Compositing & Matting - Model 617
Video False Colorizer & Video Color Synthesizer Model 606S
Video Box Generator - 610 Series & 620B
Video Circle Generator - Overlay or Superimpose Video Circle - 624 Series
Composite or S-Video, NTSC or PAL, to VGA Converter Model 4260
IRE, defined in terms of video

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