| 摘要 |
PURPOSE:To change a thinning position without increasing the number of gates to be used by gating a sampling clock by the output of a means to determine the existence of thinning. CONSTITUTION:When a thinning ratio is 2/3, since its denominator is 3, 2 is set to a register 1, and a pattern, in which thinning is executed once per three times, is set at 0 to 2 bits in a register 2. A counter 3 counts sampling clocks, and a counter 4 counts line counting clocks. In a gate circuit 7, the sampling clocks are masked when either of selectors 5 and 6 selects the existence of thinning, and the sampling clocks are outputted when both of the selectors 5 and 6 select the nonexistence of thinning. Thereafter, the data can be obtained, which are reduced into 2/3 both in a main scanning direction and sub scanning direction, by latching the data with the output clocks of the circuit 7 in a latch circuit 8. |
