Apparatus and method for recording a digital image signal

摘要

A digital image signal compressed with orthogonal transform is recorded. Intraframe data is separated from an input digital image signal compressed with orthogonal transform. The separated intraframe data is once stored in a memory. First data for special reproduction is generated by reading the stored intraframe data at a frame interval depending on a reproduction speed and eliminating second data from the intraframe data read from the memory so that an amount of remaining data after the second data is eliminated is within a target code amount. The second data is related to orthogonally transformed block coefficients of the intraframe data read from the memory. Data to be recorded is then generated by combining the first data for special reproduction with the input digital image signal.