Screen gain Sharpness SCART Stereo Signal amplifier Set-Top Box (STB) or Receiver Decoder SDTV (Standard Definition Television) Scaler (multiplier) Security Shuter & Sealing Slides projector (OHP) SECAM (Sequential Couleur avec Mémoire) S-Video Poly-Si (silicon) LCD SXVGA SXGA SXRD Super VGA (SVGA) Short focus lens/ Short-focus zoom lens