| 摘要 |
<p>PURPOSE:To display a desired state during a handwriting process by stopping the operation of a recorder at the transition points between the pen coordinate data and the eraser coordinate data and vice versa. CONSTITUTION:The data A supplied from a decoder 2 is given to a buffer 12 as well as to a decoder 10. The pen coordinate data and the eraser coordinate data are written in a memory at levels 1 and 0 as the first input respectively. The memory 11 delays (c) the written data by an amount equivalent to one coordinate data and supplies it to an output inverting EXOR circuit 13. While the decoder 10 supplies the eraser data given from the 2nd output to the circuit 13 at level 1 and the pen coordinate data, the pen-up data PU and the pen-down data PD to the circuit 13 at level 0 respectively (B). The output D of the circuit 13 delivers level 1 at a transition point from the pen coordinate data to the eraser coordinate data. When the level 1 is delivered from the circuit 13, a code PS is delivered from a section coder 14.</p> |
