Video signal scan conversion

Details Video signal scan conversion Video signal scan conversion

1996-10-31

2000-03-07

Lee, Michael H.

Television

Format conversion

Changing number of lines for standard conversion

348452, 348448, H04N 701

Patent

active

060347341

ABSTRACT:
In a scan conversion method of generating an output video signal from an interlaced input signal, including the steps of furnishing (1) a first signal having first lines (F.sub.i (x-(0, 1).sup.T, n)) corresponding to original lines of the interlaced input signal, and second lines (F.sub.i (x, n)) in addition to the first lines (F.sub.i (x-(0, 1).sup.T, n)); and providing (5, 11, 7, 13) a second signal which is delayed or advanced with respect to the first signal, the second signal having first processed lines (F.sub.out (x-(0, 1).sup.T -D, n-1)) corresponding to the original lines, and second processed lines (F.sub.out (x-D, n-1)) corresponding to the second lines (F.sub.i (x, n)); output lines (F.sub.out (x, n)) of the output video signal are obtained in dependence upon a first difference between the first processed lines (F.sub.out (x-(0, 1).sup.T -D, n-1)) and the first lines (F.sub.i (x-(0, 1).sup.T, n)), and a second difference between the second processed lines (F.sub.out (x-D, n-1)) and the second lines (F.sub.i (x, n)).

REFERENCES:
patent: 5021870 (1991-06-01), Motoe et al.
patent: 5051826 (1991-09-01), Ishii et al.
patent: 5386237 (1995-01-01), Knee
patent: 5532750 (1996-07-01), De Haan et al.

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