| 摘要 |
<p>An information signal processing device preferably used for converting, e.g., an SD signal to an HD signal. A space class and a motion class are extracted from pixel data concerning a tap selectively extracted from an SD signal and corresponding to the position of interest of an HD signal. Coefficient type data and item selection information on each class are stored in a memory bank (135). A coefficient creating circuit (136) creates coefficient data Wi on each class according to the coefficient type data and image quality adjustment parameters h, v by using a creation formula including an item selected according to the item selection information. An arithmetic circuit (127) creates pixel data on the position of interest of the HD signal from prediction tap data xi and the coefficient data Wi by using an estimation formula. Without degrading the accuracy of the arithmetic operation, the amount of coefficient type data and the scale of the arithmetic operation unit can be reduced, and the approximation accuracy of the coefficient curved surface is improved.</p> |
