Interframe coding apparatus.

摘要

An interframe coding apparatus performs motion detection and vector quantization on the basis of a block of interframe differential signals and includes a vector quantizer. The data of the interframe differential signal or the block scanning predictive error signal is compressed using a vector quantizer. The vector quantizer receives a plurality of suppressed predictive error signals (624) as input signals in block form and operates to form input vectors. The data is analysed by a motion detector (652) and where motion is detected, the relevant block is coded as a significant block. A coder (638-642) operates to determine an output vector having the least distortion with respect to an input vector by various techniques. A coded output or output vector codetable address (625) is output from the coder of the device for receipt by a decoder (639,642,654,655) which constructs a proper output vector signal.