blanking
Speech parts
1. blanking - Noun
2. blanking - Verb
Meaning
of Blank
Source: Webster's dictionarySynonyms
Antonyms
Show all antonymsPhrases with the word
Examples
Before transmission, the subcarrier itself, is removed from the active (visible) portion of the video, and moved, in the form of a burst, to the horizontal blanking portion, which is not directly visible on screen.
CGMS-A consists of a "flag" within the vertical blanking interval (essentially data, like closed captioning) which digital recording devices search for.
In both systems the active area contains 720 pixels per scanline, with 704 pixels used for content and 16 pixels on the sides left for digital blanking.
For all types of NTSC programming, captions are "encoded" into line 21 of the vertical blanking interval - a part of the TV picture that sits just above the visible portion and is usually unseen.
For this purpose, a short burst of subcarrier, known as the color burst, is transmitted during the back porch (re-trace blanking period) of each scan line.
NTSC-J Only Japan 's variant " NTSC-J " is slightly different: in Japan, black level and blanking level of the signal are identical (at 0 IRE ), as they are in PAL, while in American NTSC, black level is slightly higher (7.5 IRE ) than blanking level.