Patent ID: 7388617

Claim:
A picture conversion apparatus that converts an inputted interlaced video signal into a progressive video signal, comprising: a progressive signal generation circuit that generates a progressive signal by operation based on said inputted interlaced video signal; a motion calculation circuit that calculates a motion amount in a vertical direction of a picture on a basis of said progressive signal generated by said progressive signal generation circuit; a still picture processing circuit that generates a still picture progressive signal by still picture processing from said inputted interlaced video signal; a moving picture processing circuit that generates a moving picture progressive signal by moving picture processing from said inputted interlaced video signal; and an output circuit that outputs the still picture progressive signal outputted from said still picture processing circuit when the motion amount in the vertical direction calculated by said motion calculation circuit is smaller than a first value, wherein said progressive signal generation circuit comprises: an interlace generation circuit that generates a plurality of interlaced video signals respectively corresponding to a plurality of successive fields on the basis of said inputted interlaced video signal; a first progressive circuit that generates a first progressive signal on the basis of a first combination of more than one of the plurality of interlaced video signals generated by said interlace generation circuit; and a second progressive circuit that generates a second progressive signal on the basis of a second combination, which differs from said first combination, of more than one of the plurality of interlaced video signals generated by said interlace generation circuit; said motion calculation circuit calculating said motion amount of a picture on a basis of said first progressive signal generated by said first progressive generation circuit and said second progressive signal generated by said second progressive generation circuit.