| 摘要 |
PROBLEM TO BE SOLVED: To provide a decoder for an image that is high-efficiently coded image that can correctly decode an image after transition in the transition from still display of an image in compliance with the MPEG 2 to a usual decoding operation. SOLUTION: A decoding means 1 that decodes a high-efficiently coded image is provided with a memory means 30 whose area is divided into areas 31-1, 31-3 that store a reference image used by decoding other image for the reference image and an area 32 that stores one non-reference image not used for the reference image, a write area control means 18 that selects a storage destination of a decoded image, and a rearrangement read means 19 that reads the image data stored in the memory means in the order of display different from the data in the order of decoding. In the decoder 3 that includes the decoding means 1 and sets one of the images stored in the memory means to a still display state upon the receipt of a still display instruction, only the reference image in the decoded images is stored in a reference image storage area upon the receipt of a still instruction while reading the non-reference image and the non-reference image is aborted without being stored in the memory means. |
