Patent ID: 7577201

Claim:
An apparatus for converting a resolution of video, comprising: a decoder configured to convert a first resolution of a video signal into a second resolution according to a predetermined ratio, to scale a motion vector extracted from the video signal based on the predetermined ratio by a motion vector scaler within the decoder, to compensate the scaled motion vector using a signal stored as a reference frame, to combine the compensated scaled motion vector and the resolution converted video signal, and to store a signal that has been scaled down according to the predetermined ratio; a coder configured to code a combined signal output from the decoder, wherein the predetermined ratio is a resolution scale down ratio, and wherein when the predetermined ratio is 1/n in width and in length, respectively, a capacity of the signal is scaled down to 1/n 2 ; and a motion vector re-sampler configured to receive the scaled motion vector from the decoder, to calculate a final motion vector based on the received scaled motion vector and to provide the calculated final motion vector to the coder, wherein the motion vector re-sampler is provided between the decoder and the coder.