Patent ID: 8730392

Claim:
A frame rate conversion method, comprising: detecting an image mode for a plurality of input frames by determining an image mode corresponding to a group of consecutive frames of the plurality of input frames with the same image characteristics as a first film mode or a second film mode according to the number of consecutive frames; performing motion estimation on the plurality of input frames to generate a motion estimation result; and interpolating a plurality of interpolated frames according to the detected image mode, the motion estimation result and the plurality of input frames to generate a plurality of converted output frames, wherein a frame rate of the output frames is different from that of the input frames, comprising: when the image mode is the first film mode, calculating a plurality of motion vectors according to the motion estimation result and a first group of frame indexes of the plurality of frame indexes corresponding to the first film mode, with the motion vectors being assigned equal moving distances; multiplying the frames corresponding to the first frame indexes by a first rate and multiplying frames corresponding to a second group of frame indexes by a second rate according to the calculated motion vectors and the second group of frame indexes corresponding to the first film mode to respectively generate a plurality of interpolated frames, with a summation of the first rate and the second rate being 1; outputting the plurality of converted output frames according to the plurality of input frames and the plurality of interpolated frames; and when the image mode is the second film mode, calculating the plurality of motion vectors according to the motion estimation result and the second group of frame indexes of the plurality of frame indexes, corresponding to the second film mode.