Apparatus and method for scrolling a screen of a portable terminal having a touch screen
First Claim
Patent Images
1. A method for scrolling a screen of a portable terminal having a touch screen, the method comprising:
- displaying a current portion of a scrollable image;
checking a scrolling amount of the image;
measuring a drag-related variation when a drag is detected, wherein the displaying of the current portion of the scrollable image is maintained until the drag is cancelled;
determining a scrolling value based on the drag-related variation and a preset reference value; and
displaying the image at a position corresponding to the scrolling value based on the scrolling amount when the drag is cancelled;
wherein the drag related variation is at least one of;
i) drag length; and
ii) elapsed time until drag cancellation after the drag is stopped.
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Abstract
Methods of scrolling a screen of a portable terminal having a touch screen. One exemplary method includes outputting a scrollable image; checking an entire scrolling amount of the image; measuring a drag-related variation when a drag is generated; calculating a scrolling rate based on the measured drag-related event with respect to a preset value; and outputting an image at a position corresponding to the scrolling rate based on the entire scrolling amount when the drag is cancelled.
14 Citations
23 Claims
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1. A method for scrolling a screen of a portable terminal having a touch screen, the method comprising:
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displaying a current portion of a scrollable image; checking a scrolling amount of the image; measuring a drag-related variation when a drag is detected, wherein the displaying of the current portion of the scrollable image is maintained until the drag is cancelled; determining a scrolling value based on the drag-related variation and a preset reference value; and displaying the image at a position corresponding to the scrolling value based on the scrolling amount when the drag is cancelled; wherein the drag related variation is at least one of;
i) drag length; and
ii) elapsed time until drag cancellation after the drag is stopped. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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9. A method for scrolling a screen of a portable terminal having a touch screen, the method comprising:
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displaying a scrollable image; checking a scrolling amount of the image; measuring a drag-related variation when a drag operation is generated; determining a scrolling value based on the drag-related variation and a preset reference time; and displaying the image at a position corresponding to the scrolling value based on the scrolling amount when the drag is cancelled; wherein the drag related variation is elapsed time until drag cancellation after the drag is stopped, the scrolling value is determined as a percentage of a maximum scrolling value corresponding to the preset reference time, the percentage equaling a ratio of a counted time after the drag is stopped to the preset reference time.
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11. An apparatus for scrolling a screen of a portable terminal, the apparatus comprising:
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a touch screen which displays a current portion of a scrollable image and recognizes operations of a touch, a drag and a drag cancellation; and a controller, including a processor, for; checking a scrolling amount of the image when the image is displayed; measuring drag-related variation when a drag detected, wherein the displaying of the current portion of the scrollable image is maintained until the drag is cancelled; calculating a scrolling value based on the drag-related variation and a preset reference value; and displaying an image at a position corresponding to the scrolling value based on the scrolling amount of the image when the drag is cancelled; wherein the drag related variation is determined according to at least one of;
i) drag length; and
ii) elapsed time until drag cancellation after the drag is stopped. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for scrolling a screen of a portable terminal having a touch screen, the method comprising:
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displaying a scrollable image; checking a scrolling amount of the image; measuring a drag-related variation when a drag operation is generated; determining a scrolling value based on the drag-related variation and a preset reference value; displaying information of the determined scrolling value; and displaying the image at a position corresponding to the scrolling value based on the entire scrolling amount when the drag operation is cancelled. - View Dependent Claims (21, 22, 23)
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Specification