Patent ID: 7050494

Claim:
A method for displaying frames of a dynamic image using single field data from an interlaced encoded image data having a two-field structure, comprising the steps of: performing inverse quantization of the interlaced encoded image data to obtain DCT (Discrete Cosine Transform) coefficients of each of a plurality of field blocks that comprise a frame; to half the size of the DCT coefficients and for each frame, selecting only one, but not both, of two fields that form the frame and discarding the non-selected field, each selected field consisting of selected field blocks; doubling the size of the DCT coefficients of each selected field block in each selected field by adding high frequency components in order to obtain compensated DCT coefficients having a data size corresponding to a frame block; performing inverse DCT of the compensated DCT coefficients to obtain image data corresponding to said frame block; and displaying the image data.