Computer graphics processing and selective visual display system – Display driving control circuitry – Controlling the condition of display elements
Patent
1997-10-29
1999-10-26
Bayerl, Raymond J.
Computer graphics processing and selective visual display system
Display driving control circuitry
Controlling the condition of display elements
345145, 345157, 345160, G06F 314
Patent
active
059736895
ABSTRACT:
A feedback means is provided in conjunction with a cursor control mechanism for a two- or three-dimensional graphic user interface. Feedback levels are determined by tonal variation (grey scale or color component) at the pixel (P) currently indicated by the cursor. Suitably, the levels are set by generating differentials across a patch of pixels (A) surrounding the indicated pixel, with differential generation in mutually perpendicular directions (X and Y) providing for independent feedback in two or three directions. The technique enables interface features such as window boundaries (36) or textured patches to be identified to the user without specially authored software being required for those features to trigger feedback when indicated.
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"Glimpses of Heaven, Visions of Hell" by B. Sherman & P Judkins, Pub Hodder & Stoughton pp. 54-56.
IBM Technical Disclosure Bulletin, vol. 34, No. 10A, Mar. 1992, pp. 223-225 .
Bayerl Raymond J.
Thai Cuong T.
Thorne Gregory L.
U.S. Philips Corporation
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