| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for saving a specific image in a video CODEC by which the required time is shortened, the number of memory access is reduced, and the power consumption is thereby decreased. <P>SOLUTION: The video CODEC which operates by multi-frame structure, comprises first and second two memory spaces 10 and 12 assigned as much as the size of images and alternately uses a current image and a previous image to copy a specific image during compression or decompression and to save it in the memory spaces, adopts a characteristic constitutive means including a means for treating the image that is used as the previous image and is under copying, as the image is stored in the first memory space 10 during the compression or decompression process of an (n+1)th frame when the copy request of the specific image is issued during decompressing or compressing of the arbitrary (n)th frame, and for implementing the compression or decompression of an (n+2)th frame in a third memory space 14 that is another memory space. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
