| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide technology for smoothly changing a display image in response to an image change request from a user. <P>SOLUTION: A compression format identifying unit 132 identifies a compression format of image data stored in a main memory 60. A transfer function determining unit 140 determines a transfer function in accordance with the compression format of a tile image thus identified. A convolution operation unit 142 subjects a change request signal and the transfer function thus determined to convolution operation so as to generate a change instruction signal. A prefetch processor 150 reads a tile image from the main memory 60 using the change request signal, decodes the image, and writes the decoded image in a buffer memory 70. A display image processor 170 generates a display image using the change instruction signal. <P>COPYRIGHT: (C)2010,JPO&INPIT |
