| 摘要 |
<p>PURPOSE:To erase easily even a minute boundary part, by displaying a cursor according with the size of an eraser to find the boundary of a part to be erased. CONSTITUTION:When data is written with a pen P, a switch SW selects the output of a cursor generator KPG1 by an erase/write indicating signal. A segment is written in a frame memory FM from an erase area/write segment generating circuit PG. Meanwhile, when data is erased by an eraser IL, the switch SW selects the output of a cursor generator KPG2 by the erase/write indicating signal, and data in the frame memory FM is erased by the erase area/write segment generating circuit PG. A round cursor pattern is generated from the cursor generator KPG2 if the eraser is round.</p> |
