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Color display

  • US 5,254,977 A
  • Filed: 07/13/1992
  • Issued: 10/19/1993
  • Est. Priority Date: 06/12/1989
  • Status: Expired due to Term
First Claim
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1. A method of displaying in respective regions of a display, colours defined by a selected section of a colour space defined by N orthogonal axes, the method comprising:

  • a) a first preliminary step of determining and storing data defining a set of displayable colours within the colour space, and a second preliminary step of storing addresses of a colour memory in locations of a frame tore corresponding to pixels of each region, wherein each region is defined by an array of pixels for each of which the same colour memory address is stored, the addresses for each region being different;

    b) subsequently;

    i) determining the section of the colour space to be displayed;

    ii) storing, at each address in the colour memory corresponding to a region which is to display a colour of the selected section, data defining the colour, and at each address corresponding to an unused region, data defining a common background colour by downloading data selected from the previously generated colour data into the colour memory; and

    iii) displaying on the display the colours defined in the color memory in the corresponding regions; and

    c) repeating step b) without repeating step a) so as to display other selected sections of the colour space.

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