Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1997-10-31
1999-10-26
Teska, Kevin J.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
39550009, 39550012, 345438, G06F 1750
Patent
active
059742437
ABSTRACT:
Enhanced capability design-rule halos for use in Computer Aided Design (CAD) software programs are described. Such enhanced halos, created around a design feature at the design rule distance from that feature, have the following characteristics: beveled corners for closer placement of adjacent non-parallel and/or non-perpendicular design features, level-to-level design rule halos, following a bend or turn in a design feature, the design rule halo automatically adapts to bends or turns in the design feature and associated changes in the design feature following the bend, following a bend or turn in a design feature, the design feature and the design rule halo automatically snap back, as required, to avoid a design rule violation with respect to an adjacent design feature, and the design-rule halo is prevented from extending closer to an adjacent design feature than the design rule distance. These actions are performed real-time and interactively.
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Bennett Michael J.
Benzel Jack D.
Moh David C.
Hewlett--Packard Company
Knox Lonnie A.
Teska Kevin J.
Tobey, Jr. Morley C.
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