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引言 电子计算机图形显示器中,矢量产生器是一个重要卫件。因此,提高它的显示速度、画线精度和减少设备,就成为图形显示器设计中的重要课题。 在目前常用的累加器、速率倍增原理等数字式矢量产生器中,要显示一段数据为(x,y)=(M,N)的小矢量,当M≥N,M写成二进制形式的有效位数为m时,总共需要的显示时间为T=2~mT_0(T_0为主频周期)。且M在[2~(m-1),(2~(m-1))]这个区间,所需的显示时间均为2~mT_0。因此在这些方案中,显示速度V≠const(指数值大者的轴向增长速度),而是显示
Introduction Electronic computer graphics display, vector generator is an important guard. Therefore, to improve its display speed, line drawing accuracy and reduce equipment, graphics display has become an important issue in the design. In the current commonly used accumulator, the principle of rate multiplication and other digital vector generator, to display a piece of data (x, y) = (M, N) of the small vector, when M ≥ N, M is written in binary form When the number is m, the total display time required is T = 2 ~ mT_0 (T_0 is the main frequency period). And M is in the range of [2 ~ (m-1), (2 ~ (m-1))], the required display time is 2 ~ mT_0. Therefore, in these schemes, the display speed V ≠ const (the axial growth rate of the larger of the index values) is displayed instead