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    • 51. 发明授权
    • Dot interpolation control system
    • 点插补控制系统
    • US4680720A
    • 1987-07-14
    • US661192
    • 1984-10-15
    • Jiro YoshiiAkira KomatsuHiroshi Ishii
    • Jiro YoshiiAkira KomatsuHiroshi Ishii
    • G06F17/17G09G5/28G06F15/66H04N1/04
    • G06F17/175G09G5/28Y10S345/947
    • A dot interpolation control system according to the invention includes a dot pattern memory storing character pattern data having a predetermined dot matrix format. Dot data of four adjacent dots is obtained from the dot pattern memory. X and Y off-set values of a position in an area surrounded by the four dots are stored using one of the dot data of four adjacent dots as a reference point. Dot interpolated value data in the area surrounded by the four dots is stored in an interpolating table ROM in accordance with all combination of ON- and OFF-states of the dot data of four adjacent dots. The dot data of four adjacent dots and the X and Y off-set values are supplied to the interpolating table ROM. A dot interpolated value at a coordinate point indicated by the off-set values is generated in correspondence with ON- and OFF-states of the four adjacent dots.
    • 根据本发明的点插值控制系统包括存储具有预定点阵格式的字符图形数据的点阵图形存储器。 从点图案存储器获得四个相邻点的点数据。 使用四个相邻点的点数据之一作为参考点来存储由四个点包围的区域中的位置的X和Y偏移值。 根据四个相邻点的点数据的ON状态和OFF状态的全部组合,将四个点包围的区域中的点内插值数据存储在内插表ROM中。 四个相邻点的点数据和X和Y偏移值被提供给内插表ROM。 对应于四个相邻点的ON和OFF状态产生由偏移值指示的坐标点处的点内插值。