Patent ID: 7362805

Claim:
An apparatus for transforming a video signal, the apparatus comprising: an intra-mode transforming unit, said intra-mode transforming unit performing a block-based intra-mode transformation of at least a first portion of the video signal; and a predictive-mode transforming unit, said predictive-mode transforming unit performing a block-based predictive-mode transformation of at least a second portion of the video signal, said intra-mode transforming unit performing the intra-mode transformation on the basis of fields of the at least first portion of the video signal in a field-based video signal, said intra-mode transforming unit performing the intra-mode transformation on the basis of frames of the at least first portion of the video signal in a frame-based video signal, said predictive-mode transforming unit performing the predictive-mode transformation on the basis of fields of at least the second portion of the video signal in the field-based video signal, and said predictive-mode transforming unit performing the predictive-mode transformation on the basis of frames of at least the second portion of the video signal in the frame-based video signal, wherein an intra-block, coded using intra-mode transformation, may be included within a predictive field or predictive frame, and said video signal contains an intra-mode signal for said intra-block, said intra-mode signal being generated for each intra-block within said predictive-fields or a predictive-frame that has been transformed by using the intra-mode transformation.