Graphics display pointer with integrated selection
First Claim
1. A graphic input arrangement includinga cursor control means,a graphic input means including means for developing first, second and third respective signals, at least two of said first, second and third respective signals representing forces applied to a graphic input device along orthogonal axes, and supplying said at least two of said first, second and third signals to said cursor control means,storing means for storing at least one of said first, second and third signals,filter means for discriminating a force applied to said graphic input device corresponding to a selection, andmeans responsive to said filter means for developing a position correction signal corresponding to at least one of said first, second and third signals stored in said storage means to relocate a cursor at a location where said cursor was located at a time when said force corresponding to a selection was begun.
3 Assignments
0 Petitions
Accused Products
Abstract
A threshold discrimination filter circuit compares an amplitude and rate of change of amplitude of an output of a graphic input device such as an isometric joystick including strain gauges and a fixed resistance in a hierarchical voltage divider with threshold reference signals and corrects the output of the graphic input device based on previously stored samples thereof when a selection or deselection action by a user is discriminated. Outputs of the graphic input device are supplied directly to a CPU of a data processing device between masking periods so that graphic manipulations such as dragging can be performed while masking unintended change of specified display location during selection and deselection.
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Citations
19 Claims
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1. A graphic input arrangement including
a cursor control means, a graphic input means including means for developing first, second and third respective signals, at least two of said first, second and third respective signals representing forces applied to a graphic input device along orthogonal axes, and supplying said at least two of said first, second and third signals to said cursor control means, storing means for storing at least one of said first, second and third signals, filter means for discriminating a force applied to said graphic input device corresponding to a selection, and means responsive to said filter means for developing a position correction signal corresponding to at least one of said first, second and third signals stored in said storage means to relocate a cursor at a location where said cursor was located at a time when said force corresponding to a selection was begun.
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13. A method of controlling an image on a display including the steps of
storing samples of an output of a graphic input means, discriminating occurrences of selection and deselection of a location with a graphic input means, and determining onset of force applied to said graphic input means discriminated as a selection by said discriminating step, generating corrections to said output of said graphic input means corresponding to a stored sample of an output of said graphic input means at a time of onset of selection discriminated in said discriminating step.
Specification