Patent ID: 6421385
Filing Date: 2002-07-16
Classification: H04N

Abstract:
A video signal conversion apparatus for converting DV (Digital Video) encoded video data to MPEG (Motion Picture Expert Group) encoded video data, said DV data consisting of digital video data which have been encoded in a DV format and including motion flag data which specify for each of respective video data blocks whether interlaced-field mode DCT (Discrete Cosine Transform) processing or progressive-field DCT processing has been applied in encoding that block, the apparatus comprising:video decoding means (11) for decoding said DV encoded video data and for extracting said motion flag data from said DV encoded video data to obtain decoded video data formed of a stream of interlaced-field frames, and video encoding means (15) coupled to receive said decoded video data and said motion flag data, for executing MPEG format encoding of said decoded video data, wherein said video encoding means (15) includes processing mode selection means responsive to said motion flag data for adaptively selecting a mode of said MPEG format encoding, based upon said motion flag data.