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Frage 83

How is an interlaced scanning pattern generated in a fast-scan (NTSC) television system?

  1. By scanning two fields simultaneously
  2. By scanning each field from bottom-to-top
  3. By scanning lines from left-to-right in one field and right-to-left in the next
  4. By scanning odd-numbered lines in one field and even-numbered lines in the nextRichtige Antwort

Erklärung

Interlace is produced by scanning the odd-numbered lines in the first field and the even-numbered lines in the second, so the two fields mesh into one 525-line frame. This halves the visible flicker without increasing the video bandwidth; the fields are sent one after the other, always top to bottom and left to right.

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Frage 83: How is an interlaced scanning pattern generated in a… · FCC Amateur Extra Class (Element 4) · Questena