Patent ID: 7956928

Claim:
A video de-interlace apparatus, comprising: a combing detection apparatus, for receiving a plurality of successive fields, performing combing detection to the fields and outputting a combing detection result wherein the successive fields comprise odd fields and even fields, the combing detection apparatus comprises: a motion detection apparatus, for receiving the successive fields for determining whether there is motion between adjacent odd and even fields among the successive fields, wherein each of the fields comprises a plurality of pixels respectively denoted as P(x, y), and (x, y) represents a position of the pixel in the field, the motion detection apparatus comprises: a motion calculation apparatus, for receiving pixel P(x, y) of the i th field, pixel P(x, y+1) of the i th field, pixel P(x, y) of the (i+1) th field, pixel P(x, y+1) of the (i+1) th field, pixel P(x, y) of the (i+2) th field, and pixel P(x, y+1) of the (i+2) th field, adding the difference between pixel P(x, y) of the (i+2) th field and pixel P(x, y) of the (i+1) th field to the difference between pixel P(x, y+1) of the (i+2) th field and pixel P(x, y) of the (i+1) th field as a first sum, adding the difference between pixel P(x, y+1) of the (i+2) th field and pixel P(x, y+1) of the (i+1) th field to the difference between pixel P(x, y+1) of the (i+2) th field and pixel P(x, y) of the (i+1) th field as a second sum, and adding the difference between pixel P(x, y) of the (i+2) th field and P(x, y) of the i th field to the difference between pixel P(x, y+1) of the (i+2) th field and P(x, y+1) of the i th field as a third sum, wherein i is a natural number and 0≦i≦the number of the fields; a motion determination apparatus, for receiving the first, the second and the third sum, outputting an even pixel movement signal and an odd pixel movement signal, enabling the even pixel movement signal when the first sum and the third sum are greater than or equal to a first predetermined value, and enabling the odd pixel movement signal when the second sum and the third sum are greater than or equal to the first predetermined value; and a combing detector, for counting a combing number of a specific odd field and a specific even field when the motion detection apparatus determines there is motion between the specific odd field and the specific even field neighboring with the specific odd field among the successive fields; and a de-interlace format determining apparatus, for receiving the combing detection result and comparing the combing detection result with a plurality of models, when the combing detection result conforms to a specific model among the models, the de-interlace format determining apparatus determines a specific de-interlace format corresponding to the specific model to de-interlace the fields.