Graphics display system with memory array access

Details Graphics display system with memory array access Graphics display system with memory array access

1987-02-12

1989-02-28

Caldwell, Sr., John W.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340723, 340732, 340798, 340799, G09G 114

Patent

active

048089869

ABSTRACT:
A graphics display system including a circuit that receives graphics information to be displayed and a memory that stores the graphics information in a memory array that includes a portion that directly corresponds to the image area for display. The memory provides a single access operation to the array during a single memory cycle. Circuitry is provided that is connected to the receiving means and to the memory that provides graphics information to an N by M portion of the memory array during a single memory cycle (wherein N and M are integers each greater than one). A display is connected to the memory that displays the graphics information contained in the image area array portion of the memory. The graphics display system further includes the capability to provide a patterned line intersection where the continuity of the line pattern is maintained along the intersection of the lines.

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IBM Technical Disclosure Bulletin, vol. 28, No. 5, Oct. 1985, "Circuit for Updating Bit Map-Memory of A Display Adapter", pp. 2240-2243.
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Fundamentals of Interactive Computer Graphics, by James D. Foley and Andries VanDam, published by Addison-Wesley Publishing Company, 1982, pp. 433-435.

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