Patent ID: 7307670

Claim:
A bad editing detection device comprising: first to fourth buffers for respectively storing a first field, a second field, a third field and a fourth field, wherein the second field is a basis field for generating current output of an output frame, and the fourth field, the third field and the first field are respectively a second following field, a first following field and a previous field of the second field; a frame motion detector for determining whether the first field and the third field are identical, and if affirmative, outputting 0; otherwise, outputting 1; a first counter for being reset when the frame motion detector outputs 0, and being incremented when the frame motion detector outputs 1; and a bad editing detector for determining a bad editing according to the third field and the fourth field by detecting whether a luminance difference between the third field and the fourth field is larger than a luminance difference between the third field and a line-buffered third field when a value of the first counter is 0, 1 or 3, and determining a bad editing according to the third field and the second field by detecting whether a luminance difference between the third field and the second field is larger than a luminance difference between the third field and the line-buffered third field when the value of the first counter is 2 or 4.