An interlaced television signal is derived from an interlaced 625 line,
nominally 50 Hz field rate television signal, the derived television
signal having perceived reduced line structure and reduce flicker. The
field rate and the number of lines of the derived television signal are
increased with respect to the field rate and the number of lines of the
original television signal, such that perceived flicker and line
structure in the derived television signal is reduced. The increase in
the field rate and the increase in the number of lines in the derived
television signal results in a horizontal scanning rate that does not
substantially exceed twice the horizontal scanning rate of the original
television signal while minimizing undesirable motion artifacts.