Patent ID: 8165208

Claim:
A video detecting device, comprising: a first pixel detector, for generating a first difference between intensity of a target pixel of a target scan line in a first field and intensity of a first comparing pixel of a first scan line corresponding to the target scan line in a second field, and a second difference between intensity of the target pixel with intensity of a second comparing pixel of a second scan line corresponding to the target scan line in the second field, thereby to generate a first detection value corresponding to the target pixel based on the first difference and the second difference, wherein the target scan line is between the first scan line and the second scan line; a second pixel detector, for generating a third difference between intensity of a reference pixel of the first scan line in the second field with intensity of a third comparing pixel of a third scan line corresponding to the first scan line and the target scan line in the first field, and a fourth difference between intensity of the reference pixel with intensity of the target pixel of the target scan line in the first field, thereby to generate a second detection value corresponding to the reference pixel based on the third difference and the fourth difference, wherein the first scan line is between the target scan line and the third scan line; and a determining unit, coupled to the first pixel detector and the second pixel detector, for generating a diagnostic value according to the first detection value and the second detection value.