1. blanking - Noun
2. blanking - Verb
of Blank
Source: Webster's dictionaryBefore 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. Source: Internet
CGMS-A consists of a "flag" within the vertical blanking interval (essentially data, like closed captioning) which digital recording devices search for. Source: Internet
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. Source: Internet
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. Source: Internet
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. Source: Internet
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. Source: Internet