Method for deleting objects on a computer display
First Claim
1. A method of deleting information displayed on a screen associated with a computer system, the method comprising the steps of:
- detecting a pointer created stroke input onto the display screen, the stroke being defined as a series of points;
processing the stroke for scrub gesture recognition, the stroke processing steps including the substeps of defining a multiplicity of corners in the stroke, removing selected corners that have an associated turn angle that is less than a predetermined angle, and removing selected corners that are associated with segments that are shorter than a designated length;
determining whether the processed stroke meets the path definition requirements of a scrub gesture based upon characteristics of the processed stroke itself and without comparing the processed stroke to stored stroke objects, and said scrub determining step includes the substep of determining whether the number of times that the processed stroke changes the direction of its turn angles exceeds a predetermined number;
determining whether an object displayed on the screen is selected when the stroke is determined to meet the path definition requirements of a scrub gesture; and
deleting the selected object if the processed stroke meets the requirements of a scrub gesture and an object is selected for deletion.
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Accused Products
Abstract
A method for deleting objects displayed on the screen of a display assembly of a pointer based computer system is described. The method includes the steps of detecting a pointer created stroke and processing the stroke for gesture recognition. Thereafter, the processed stroke is checked to determine whether it meets the path definition requirements of a scrub gesture. In another step, a determination is made as to whether an object displayed on the screen has been selected. If an object is selected and the processed stroke meets the requirements of a scrub gesture, the selected object is deleted. In a preferred embodiment of the invention, the selected object determining step includes the substep of determining whether any objects were preselected at the time the scrub gesture was made. When no suitable objects are preselected, a determination is made as to whether the scrub gesture substantially overlaps a displayed object. If a displayed object is substantially overlapped, it is selected for deletion. In another preferred embodiment, the scrub gesture determining step includes the substep of determining whether the number of times that the processed stroke changes the direction of its turn angles exceeds a predetermined number, wherein the stroke will not be considered a scrub gesture unless the predetermined number of direction changes is exceeded. In yet another preferred aspect of the invention, the stroke processing step includes the substeps of defining a multiplicity of corners in the stroke, removing selected corners that are associated with segments that are shorter than a designated length, and removing selected corners that have an associated turn angle that is less than a predetermined angle.
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Citations
16 Claims
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1. A method of deleting information displayed on a screen associated with a computer system, the method comprising the steps of:
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detecting a pointer created stroke input onto the display screen, the stroke being defined as a series of points; processing the stroke for scrub gesture recognition, the stroke processing steps including the substeps of defining a multiplicity of corners in the stroke, removing selected corners that have an associated turn angle that is less than a predetermined angle, and removing selected corners that are associated with segments that are shorter than a designated length; determining whether the processed stroke meets the path definition requirements of a scrub gesture based upon characteristics of the processed stroke itself and without comparing the processed stroke to stored stroke objects, and said scrub determining step includes the substep of determining whether the number of times that the processed stroke changes the direction of its turn angles exceeds a predetermined number; determining whether an object displayed on the screen is selected when the stroke is determined to meet the path definition requirements of a scrub gesture; and deleting the selected object if the processed stroke meets the requirements of a scrub gesture and an object is selected for deletion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of deleting information displayed on a screen associated with a computer system, the method comprising the steps of:
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detecting a pointer created stroke input onto the screen; processing the stroke for scrub gesture recognition; determining whether the processed stroke meets the path definition requirements of a scrub gesture based upon characteristics of the processed stroke itself, the scrub gesture determining step includes the substep of determining whether the number of times that the processed stroke changes the direction of its turn angles exceeds a predetermined number, wherein the stroke will not be considered a scrub gesture unless the predetermined number of direction changes is exceeded and wherein the predetermined number is at least three; determining whether an object displayed on the screen is selected when a stroke that meets the path definition requirement of a scrub gesture is identified; and deleting the selected object if the processed stroke meets the requirements of a scrub gesture and an object is selected. - View Dependent Claims (14)
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15. A method of deleting information displayed on a screen associated with a computer system, the method comprising the steps of:
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detecting a pointer created stroke; processing the stroke for scrub gesture recognition, the stroke processing step including the substeps of defining a multiplicity of corners in the stroke, removing selected corners that are associated with segments that are shorter than a designated length, and removing selected corners that have an associated turn angle that is less than a predetermined angle; determining whether the processed stroke meets the path definition requirements of a scrub gesture, wherein the scrub gesture determining step includes the substeps of, determining whether the number of times that the processed stroke changes the direction of its turn angles exceeds a predetermined number, wherein the stroke will not be considered a scrub gesture unless the predetermined number of direction changes is exceeded and wherein the predetermined number is at least three, and adding the sum of the turn angles of all of the sequential corners that turn in the same direction and checking to determine whether any of the sums of the turn angles of all of the sequential corners that turn in the same direction exceed a predetermined total angle that is no more than approximately 180 degrees, wherein the stroke will not be considered a scrub gesture when the predetermined total angle is exceeded; determining whether an object displayed on the screen is one of; preselected before the pointer created stroke is detected and located in close proximity to the pointer created stroke;
orselected by the pointer created stroke through overlapping; and deleting the selected or preselected object if the processed stroke meets the requirements of a scrub gesture and an object is selected.
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16. A method of deleting information displayed on a screen associated with a computer system, the method comprising the steps of:
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detecting a pointer created stroke input onto the display screen, the stroke being defined as a series of points; processing the stroke for scrub gesture recognition; determining whether the processed stroke meets the path definition requirements of a scrub gesture based upon characteristics of the processed stroke itself and without comparing the processed stroke to stored stroke objects; determining whether an object displayed on the screen is selected when the stroke is determined to meet the path definition requirements of a scrub gesture; deleting the selected object if the processed stroke meets the requirements of a scrub gesture and an object is selected for deletion; and providing an animation on the screen comprising at least one frame of an image indicating deletion proximate to the former location of the object.
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Specification