×

Mapping character color attributes into grey pixel patterns

  • US 5,153,577 A
  • Filed: 03/21/1988
  • Issued: 10/06/1992
  • Est. Priority Date: 04/28/1986
  • Status: Expired due to Fees
First Claim
Patent Images

1. A system comprising:

  • a display screen having a plurality of pixels, each pixel including a plurality of positions, each pixel position having a first state in which it appears light and a second state in which it appears dark; and

    a processor connected for providing a display on the display screen, the processor comprising an emulator for emulating a target processor that provides a color display that includes a plurality of background colors including a first background color and a plurality of foreground colors including a first foreground color, the target processor further providing within the color display a first background area of the first background color and a first character of the first foreground color, the first character being positioned within the first background area;

    the emulator mapping the plurality of background colors and the plurality of foreground colors to a plurality of patterns of pixel positions for display on the display screen;

    the patterns including a plurality of background patterns for mapping the plurality of background colors, the background patterns including a first background pattern for mapping the first background color;

    the patterns further including first, second, and third foreground patterns for mapping the plurality of foreground colors, the first and second foreground patterns being more legible relative to the first background pattern than the third foreground pattern;

    the emulator mapping the first background area to the first background pattern and the first character to one of the first and second foreground patterns.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×