Patent ID: 8169541

Claim:
A method of converting a frame rate of a video signal, comprising the steps of: receiving a pulldown film sequence existing in or converted from a sequence of successive-in-time frames of the video signal, wherein the pulldown film sequence comprises a plurality of diverse original frames each having a corresponding number of duplicate frames; modifying the original frames, wherein the modifying step further comprises selectively duplicating each of the diverse original frames such that each of the diverse original frames has a first number of duplicate frames; performing estimation of at least one motion vector associated with the modified original frames wherein the step of performing estimation further comprises performing estimation of at least one motion vector associated with two adjacent diverse frames of the modified original frames; and interpolating new frames between the modified original frames in accordance with the motion vector, wherein the interpolating step further comprises interpolating a second number of new frames between two adjacent diverse original frames of the modified original frames in accordance with the motion vector.