Matsushita Electric Industrial Co., Ltd.

Hiroyuki Uwabo

Akiyoshi Tanaka

Wataru Fujikawa

Atsushi Nagata

Ikuo Inoue

Satoshi Matsuya

Satoshi Matsuya, Deceased

A motion compensated prediction interframe coding system which first measures characteristics regarding the fineness of a pattern or texture of a picture, which is represented by an input television signal and is divided into a group of continuous blocks each quantized by using a quantization step size, and changes the quantization step size into a smaller one if quantizes a block having a picture pattern or texture finer than patterns of the other blocks. Thereby, an amount of generated codes can be limited but a motion compensated prediction frame coding operation can be performed without degrading the fineness of the texture of the original input picture.

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Tokyo, Japan

Hiroyuki Uwabo