Patent ID: 7269341

Claim:
A digital video recorder for processing digital video data continuously input in frame units and storing the data on a video storing portion, the recorder comprising: a wavelet conversion portion to classify digital video data of a present frame by frequency band; a motion area dividing portion to divide the present frame into a high frequency band and a low frequency band according to the digital video data classified by the wavelet conversion portion; a motion detecting portion to generate fractal coefficients from video data in the low frequency band of the present frame, compare the generated fractal coefficients with fractal coefficients of a preceding frame to obtain difference values therebetween, and obtain motion information of the present frame from the difference values; and an adaptive storage control portion to obtain a motion weighted value of the present frame according to the motion information from the motion detecting portion when a storage capacity of the video storing portion is not more than a first set capacity which is less the half of a total capacity of the video storing portion, and store or not the motion information of the present frame in the video storing portion according to the motion weighted value of the present frame.