Touchscreen display calibration using results history
First Claim
1. A method for calibration of touchscreen display coordinates by an operator comprising:
- (a) displaying at least one calibration target, the calibration target corresponding to a calibration reference point;
(b) sensing a calibration touch for the at least one calibration target;
(c) obtaining a calibration touchpoint coordinate for the calibration touch;
(d) determining if the calibration touchpoint coordinate is valid by comparing the calibration touchpoint coordinate to a coordinate boundary defined by selected valid calibration touchpoint coordinates for the calibration target stored in a touchpoint history database comprising a plurality of valid calibration touchpoint coordinates obtained from sensed calibration touches for the calibration target; and
(e) if so, storing the calibration touchpoint coordinate in the touchpoint history database and using the calibration touchpoint coordinate to define a calibration reference point for operation, otherwise generating a computed reference calibration point using a predetermined number of the plurality of valid calibration touchpoint coordinates stored in the touchpoint history database.
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Accused Products
Abstract
A method for calibration of touchscreen display coordinates includes displaying a calibration target; sensing a calibration touch for the calibration target; obtaining a calibration touchpoint coordinate for the calibration touch; determining if the calibration touchpoint coordinate is valid; and if so, storing the calibration touchpoint coordinate in a touchpoint history database and using calibration touchpoint coordinates to define a calibration reference point for operation, otherwise generating a computed reference calibration point as an average of using a predetermined number of the calibration touchpoint coordinates in the touchpoint history database.
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Citations
11 Claims
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1. A method for calibration of touchscreen display coordinates by an operator comprising:
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(a) displaying at least one calibration target, the calibration target corresponding to a calibration reference point;
(b) sensing a calibration touch for the at least one calibration target;
(c) obtaining a calibration touchpoint coordinate for the calibration touch;
(d) determining if the calibration touchpoint coordinate is valid by comparing the calibration touchpoint coordinate to a coordinate boundary defined by selected valid calibration touchpoint coordinates for the calibration target stored in a touchpoint history database comprising a plurality of valid calibration touchpoint coordinates obtained from sensed calibration touches for the calibration target; and
(e) if so, storing the calibration touchpoint coordinate in the touchpoint history database and using the calibration touchpoint coordinate to define a calibration reference point for operation, otherwise generating a computed reference calibration point using a predetermined number of the plurality of valid calibration touchpoint coordinates stored in the touchpoint history database. - View Dependent Claims (2, 3, 4, 5)
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6. A method for calibration of touchscreen display coordinates, comprising:
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(a) maintaining a touchpoint calibration history comprising a plurality of touchpoint coordinates obtained from calibration touches for a calibration target;
(b) receiving a calibration touchpoint coordinate corresponding to the calibration target;
(c) determining if the calibration touchpoint coordinate is valid by comparing the calibration touchpoint coordinate to a coordinate range defined by selected calibration touchpoint coordinates from the touchpoint calibration history; and
(d) if the calibration touchpoint coordinate is not valid providing a computed reference calibration point based on the touchpoint calibration history. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification