Patent ID: 8059197

Claim:
A field balancing device for balancing the lightness/color of top fields and bottom fields of an interlaced signal, the field balancing device comprising: a detection circuit for detecting a lightness/color difference between at least one portion of at least one top field of the interlaced signal and at least one portion of at least one bottom field of the interlaced signal to generate a detection result, wherein the detection circuit comprises: an average value generator for generating a plurality of average values respectively corresponding to a plurality of fields of the interlaced signal, wherein each average value is an average of a plurality of pixel values of a specific field of the plurality of fields, and the specific field is a top field or a bottom field of the interlaced signal; and a determining unit, coupled to the average value generator, for generating the detection result according to the plurality of average values; and a processing circuit, coupled to the detection circuit, for selectively processing at least one field of the interlaced signal according to the detection result to balance the lightness/color of top fields and bottom fields of the interlaced signal.