Patent ID: 8345156

Claim:
A progressive scanning conversion apparatus, which converts an input video signal comprising a plurality of alternately-arranged two types of fields into an output video signal comprising a plurality of frames, the apparatus comprising: a motion detecting unit that detects a motion in the input video signal by comparing each pixel between the same types of fields and that outputs an output value, the output value indicating a likelihood of a still image and a likelihood of a moving image; a still image interpolation pixel generating unit that generates still image interpolation pixels from at least one of a preceding field and a following field; a moving image interpolation pixel generating unit that generates moving image interpolation pixels from at least one of a current field, the preceding field, and the following field; an inter-field zero vector correlation detecting unit that detects correlation of corresponding regions between the current field and the preceding field or between the current field and the following field, the corresponding regions occupying the same area in an entire screen; and a motion detection correcting unit that outputs a modified output value by adjusting the likelihood of the moving image and the likelihood of the still image in the output value based on the detected correlation; and an interpolation pixel mixing generating unit that mixes the still image interpolation pixels to the moving image interpolation pixels at an adjustable mixing ratio, the adjustable mixing ratio being determined based on the modified output value.