In raster-scanned video displays,
a scanning technique in which all odd-numbered scanning lines
are first traced in succession, followed by the tracing of the
even-numbered scanning lines in succession, each of which is
traced between a pair of odd-numbered scanning lines. Note 1:
The pattern created by tracing the odd-numbered scanning lines
is called the odd field , and the pattern created by tracing
the even-numbered scanning lines is called the even field. Each
field contains half the information content, i.e., pixels, of
the complete video frame. Note 2: Image flicker is less apparent
in an interlaced display than in a noninterlaced display, because
the rate at which successive fields occur in an interlaced display
is twice that at which successive frames would occur in a noninterlaced
display containing the same number of scanning lines and having
the same frame refresh rate.
