| 摘要 |
A method and apparatus for providing a computer display with windowing capability. Through the storage of a sequence of linked references to areas in a computer memory, each reference providing horizontal and vertical extent of a subregion of the intended displayed information, an apparatus for readily constructing the desired display results. There is no need for a dedicated display memory. The disclosure defines the subregions to be those which result when the horizontal raster-scan lines passing through the upper lefthand corner of each window are extended to the left and right margins of the display area. Vertical boundaries between the regions are defined by the edges of the windows themselves. A method for describing the location and horizontal and vertical extents of each subregion is also disclosed.
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