IMAGE RECORDER, ITS METHOD, MEDIUM RECORDING ITS PROGRAM, IMAGE REPRODUCING DEVICE, ITS METHOD AND MEDIUM RECORDING ITS PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide an image coder and an image decoder that compress and decode a picture with other many quantities of data while suppressing increase in a data capacity and reducing deterioration in a part of the picture. SOLUTION: A DCT section 71 generates a DCT coefficient block, a quantization section 72 generates a quantization DCT coefficient block, a data imbedding section 73 imbeds an audio bit stream to all bits of AC coefficients in a frame area, imbeds an audio bit stream to low-order bits of the AC coefficients at the outside of the frame area and a Huffman coding section 74 applies Huffman coding to an output of the section 73.