| 摘要 |
PROBLEM TO BE SOLVED: To realize a compression encoder reduced in cost by remarkably reducing memory scale. SOLUTION: A storage means 102 stores the input video signal consisting of plural pictures. A changed point detection means 101 detects the changed point of the input video signal. An encoding means 106 performs a fixed length encoding for the picture stored in a storage means 102 and generates a bit stream. A timing control means 105 determines the picture group including at least one sheet of intrapicture based on the detection result of the changed point detection means 101 and controls the processing timing that the fixed length encoding is performed for each picture within the picture group by the encoding means 106. A rate control means 7 defines the range of the code generation rate in the encoding means 106 as the next picture of the intrapicture to the next intrapicture based on the detection result of the changed point detection means 101 and the control of the timing control means 105, and controls the range of the code generation rate so as to assign the encoding information capacity which is preliminarily assigned to the intrapicture to another picture, when a scene change is detected. |
