| 摘要 |
PURPOSE:To copy the one row's share of the content of screen toward horizontal scanning direction every one frame according to the memory content of memory and to sequentially copy the content of screen for one row along the paper feed direction on the recording paper. CONSTITUTION:When FC is reset with the clear signal to the frame counter FC, the beam of the display unit DSP returns to the one line and one row position and the output of the gate G2 is in logical 1 to advance FC by one step. In this case, since the beam reaches the first character train, the row counter CC also advances. The coincidence circuit CIN detects coincidence to open the gate G4. Accordingly, the 10-bit data of the first raster is memorized in the memory MEM1 among the first line and first character train. When horizontal scanning on the first line and first raster is finished, CC is zero, count up initiates again on the second raster and 10-bit data of the second raster is memorized in the MEM 1. |
