Display with windowing capability by addressing
First Claim
1. A method for creating a raster-scanning signal for the display of overlapping rectangular fields of data, comprising the steps of:
- storing displayable data in a memory means;
storing sequential access control data that controls the sequence of accessing the displayable data stored in the memory means;
reading the stored sequential access control data; and
creating a raster-scanning signal representative of the contents of a sequence of locations in the displayable data storage means, the sequence corresponding to the stored sequential access control data.
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Accused Products
Abstract
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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Citations
20 Claims
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1. A method for creating a raster-scanning signal for the display of overlapping rectangular fields of data, comprising the steps of:
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storing displayable data in a memory means;
storing sequential access control data that controls the sequence of accessing the displayable data stored in the memory means;reading the stored sequential access control data; and creating a raster-scanning signal representative of the contents of a sequence of locations in the displayable data storage means, the sequence corresponding to the stored sequential access control data. - View Dependent Claims (2)
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3. An apparatus for providing a raster-scanning signal for the display of overlapping rectangular fields of data, comprising:
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displayable data storage means for storing displayable data; means for producing a raster-scanning signal representing the contents of a sequence of locations in said displayable data storage means; control data storage means for storing data that controls a sequence of accessing the contents of locations in said displayable data storage means; and control means for sequentially supplying, to said means for producing a raster-scanning signal, addresses of locations in said displayable data storage means, the sequence being specified by data stored in said control data storage means. - View Dependent Claims (4, 5, 6, 7)
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8. An apparatus for creating a graphic display of data provided to it, comprising:
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input means for receiving displayable input data; displayable data storage means connected to said input means for storing displayable data; means for producing a raster-scanning signal representing the contents of a sequence of locations in said displayable data storage means; control data storage means for storing data that controls a sequence of accessing the contents of locations in said displayable data storage means; and control means for sequentially supplying, to said means for producing a raster-scanning signal, addresses of locations in said displayable data storage means, the sequence being specified by data stored in said control data storage means. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An apparatus for providing a graphic display of data, comprising:
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means for creating synchronization signals; means for inputting input data, including displayable data; displayable data storage means for storing said displayable data; means for producing a raster-scanning signal representing the contents of a sequence of locations in said displayable data storage means; control data storage means for storing data that controls a sequence of accessing the contents of locations in said displayable data storage means; control means for sequentially supplying, to said means for producing a raster-scanning signal, addresses of locations in said displayable storage means, the sequence being specified by data stored in said control data storage means; and means for displaying the raster-scanning signal, adapted to receive said raster-scanning signal and said synchronization signals. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification