Image display apparatus
First Claim
Patent Images
1. An image display apparatus utilizing color image information for generating a monochrome image, comprising:
- a central processing unit;
an image display memory for receiving color image information from the central processing unit and for storing the color image information in successive pluralities of bits of color image information wherein each plurality of bits defines a color of one corresponding pixel of a color image;
a display control circuit for cyclically reading the successive pluralities of bits of color image information out of the image display memory;
a conversion circuit for converting each plurality of bits of color image information read out of the image display memory into a corresponding pattern of bits of monochrome image information in which successive bits correspond to successive pixels in a monochrome image and in which different patterns of the bits of monochrome image information correspond to different colors defined by the color image information; and
monochrome video display means receiving the monochrome image information and for producing a monochrome video image from the monochrome image information.
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Abstract
An image display apparatus includes a conversion circuit which makes 1-bit information in display memory correspondence to a plurality of dot data on the display screen, so that more sophisticated image information than the ability of a display device is expanded into a bright/dark dot pattern. The apparatus enables an application display program oriented to a higher-graded display device to be displayed in a pseudo sense on a lower-graded display device.
11 Citations
4 Claims
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1. An image display apparatus utilizing color image information for generating a monochrome image, comprising:
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a central processing unit; an image display memory for receiving color image information from the central processing unit and for storing the color image information in successive pluralities of bits of color image information wherein each plurality of bits defines a color of one corresponding pixel of a color image; a display control circuit for cyclically reading the successive pluralities of bits of color image information out of the image display memory; a conversion circuit for converting each plurality of bits of color image information read out of the image display memory into a corresponding pattern of bits of monochrome image information in which successive bits correspond to successive pixels in a monochrome image and in which different patterns of the bits of monochrome image information correspond to different colors defined by the color image information; and monochrome video display means receiving the monochrome image information and for producing a monochrome video image from the monochrome image information. - View Dependent Claims (2, 3, 4)
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Specification