IMAGE CODING AND DECODING METHOD AND RELATED APPARATUS

摘要

In a transmitter, a motion detector (202) detects a motion amount of a coded block. A buffer (205) memorizes a detected motion amount. A buffer controller (101) controls the buffer (205) to read the motion amounts in the order opposed to the writing order. A switch (215) selects one of outputs. In a receiver, a sync word detector (220) discriminates first and second sync words. A primary frame memory (229) memorizes an actually decoded image. A secondary frame memory (225) memorizes a predicted image corresponding to the actually decoded image. Memory controllers (102, 103) read out the image information of coding blocks from the corresponding frame memories in an order opposed to the writing order. A switch (230) selects either one of the information of the primary or secondary frame memories (229, 225). <IMAGE>