Converter and method for converting video signals of interlace format to video signals of progressive format
AssigneeMitsubishi Consumer Electronics America, Inc.
InventorKenji Tsunashima
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Abstract
A converter for converting video signals of an interlace format to video signals of a progressive format includes an intra-field converter and an adaptive temporal filter. The intra-field converter intra-field converts a video signal of the interlace format into a video signal of the progressive format. The adaptive temporal filter temporally filters the video signal of the progressive format such that as a degree of image movement in images represented by said video signal of said progressive format increases, a lesser degree of temporal filtering is performed.
Claims46
A converter for converting video signals of an interlace format to video signals of a progressive format, comprising:
- an intra-field converting means for intra-field converting a video signal of said interlace format into a video signal of said progressive format;
- and
- an adaptive temporal filtering means for temporally filtering said video signal of said progressive format such that as a degree of image movement in images represented by said video signal of said progressive format increases, a lesser degree of temporal filtering is performed, and said adaptive temporal filtering means determining a progressive pixel value as a function of a first product of a first temporal coefficient and a pixel value of a current frame of said video signal of said progressive format and a second product of a second temporal coefficient and at least one pixel of at least one previous frame of said video signal of said progressive format.
A method for converting video signals of an interlace format to video signals of a progressive format, comprising:
- (a) intra-field converting a video signal of said interlace format into a video signal of said progressive format;
- and
- (b) temporally filtering said video signal of said progressive format such that as a degree of image movement in images represented by said video signal of said progressive format increases, a lesser degree of temporal filtering is performed;
- wherein said step (b) determines a progressive pixel value as a function of a first product of a first temporal coefficient and a pixel value of a current frame of said video signal of said progressive format and a second product of a second temporal coefficient and at least one pixel of at least one previous frame of said video signal of said progressive format.
Dependencies are inferred from the claim text.