Apparatus and method for scrolling a screen of a portable terminal having a touch screen
AssigneeSamsung Electronics Co., Ltd.
InventorsChi Hyeon Paek, Jeong Wook Seo, Dae Beom Park
Life of this patent
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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.
Claims23
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.
A method for scrolling a screen of a portable terminal having a touch screen, the method comprising:
- 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.
An apparatus for scrolling a screen of a portable terminal, the apparatus comprising:
- 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.
A method for scrolling a screen of a portable terminal having a touch screen, the method comprising:
- 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.
Dependencies are inferred from the claim text.