Color display having selectable off-on and background color control
Digital shade control for color CRT background and cursors
Video display controller
Character and pattern display system
Graphics display terminal and method of storing alphanumeric data therein Patent #: 4757309
ApplicationNo. 212131 filed on 06/28/1988
US Classes:345/22, Color display345/471Alteration of stored font
ExaminersPrimary: Brigance, Gerald L.
Attorney, Agent or Firm
International ClassG09G 001/16
Foreign Application Priority Data1985-06-10 JP
AbstractAn image data processing system operates so that foreground color codes are held in a foreground register, background color codes are held in a background register, and the foreground or background color codes are selectively output by a selector according to the patterns of the pattern data or character fonts to be extended to color codes. Accordingly the pattern data or character font patterns can be extended quickly to the foreground or background color codes.Also, to extend the same pattern data repetitively and quickly to the foreground or background color codes, a rotator or selector is used to enable the pattern data to be used repetitively, and according to the output value thereof the foreground or background register is selected.