摘要 |
<p>PROBLEM TO BE SOLVED: To provide a predictive picture generating circuit capable of reducing the use of expensive memories as small as possible and reducing a circuit scale, cost and power consumption. SOLUTION: Four memories out of five memories 31 to 35 are used for a parallel read operation and the remaining one is used for a write operation and the memory for writing operation is switched in each picture period. An output data selector 4 receives output signals from the memories 31 to 35 as input signals and selectively outputs predictive pictures p1 to p4 for vectors v1 to v4 out of the read outputs of the memories 31 to 35 . The circuit can reduce the number of memories as compared with conventional redundant circuit constitution requiring two memories for one vector signal and the reduction of the circuit scale, cost and power consumption can be reduced.</p> |