| 单词 | NTSC (National Television Standards Committee) |
| 释义 | NTSC (National Television Standards Committee) The initial standard (1953) for broadcast tele- vision, NTSC was named for the committee that established it in the United States. NTSC is characterized as analog in nature, with 525 interlaced scan lines. There are 640 pixels per line, 485 of which are dedicated to the active picture.The frame rate is 30 fps, 60 fields interlaced, and the aspect ratio is 4:3. As an early analog standard that is viewed by some as overly complex and ineffective in a contemporary digital context, NTSC sometimes is referred to by its detractors in the pejorative as Never The Same Color. NTSC is defined in ITU-R Recommendation 1125 and served as the baseline for subsequent standards, Phase Alternate Line (PAL) and SECAM (SÉquential Couleur Avec Mémoire). See also analog, aspect ratio, broadcast television, frame, frame rate, interlaced scanning, ITU-R, PAL, pixel, and SECAM. |
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