Controlling a cursor on a touch screen
First Claim
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1. A method for controlling a cursor on a touch screen, the method comprising:
- in response to having entered a pointing mode, displaying the cursor on the touch screen;
in response to a touch on the touch screen, calculating a movement velocity of a touch point of the touch, and calculating a touch force of the touch based on one or more of;
feedback from a pressure sensor on the touch screen, and a contact area with the touch screen, wherein the touch force is in direct proportion to the contact area with the touch screen; and
controlling the movement of the cursor according to the movement velocity of the touch point, and also controlling the movement of the cursor based on the touch force by setting the movement velocity of the cursor to be in direct proportion to the touch force;
wherein the controlling the movement of the cursor according to the movement velocity of the touch point comprises determining a location of the cursor according to the movement velocity of the touch point of the touch, refreshing the cursor at the location, and setting a proportion factor to adjust a relationship between the location of the cursor and the movement velocity of the touch point, such that the location of the cursor is determined using the formula;
pT=p0+∫
0TaWtSt{right arrow over (v)}tdt where p0 represents a previous location of the cursor, a represents the proportion factor, Wt represents the feedback from the pressure sensor at moment t, St represents the contact area with the touch screen at moment t, and {right arrow over (v)}t represents the movement velocity of the touch point to the touch screen at moment t; and
wherein at any moment in the pointing mode, an input area of the touch point is any area within the touch screen.
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Abstract
In one embodiment, a method for controlling a cursor on a touch screen includes, in response to having entered a pointing mode, displaying the cursor on the touch screen; in response to a touch on the touch screen, calculating a movement velocity of a touch point of the touch; and controlling the movement of the cursor according to the movement velocity of the touch point; wherein at any moment in the pointing mode, an input area of the touch point is any area within the touch screen.
18 Citations
2 Claims
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1. A method for controlling a cursor on a touch screen, the method comprising:
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in response to having entered a pointing mode, displaying the cursor on the touch screen; in response to a touch on the touch screen, calculating a movement velocity of a touch point of the touch, and calculating a touch force of the touch based on one or more of;
feedback from a pressure sensor on the touch screen, and a contact area with the touch screen, wherein the touch force is in direct proportion to the contact area with the touch screen; andcontrolling the movement of the cursor according to the movement velocity of the touch point, and also controlling the movement of the cursor based on the touch force by setting the movement velocity of the cursor to be in direct proportion to the touch force; wherein the controlling the movement of the cursor according to the movement velocity of the touch point comprises determining a location of the cursor according to the movement velocity of the touch point of the touch, refreshing the cursor at the location, and setting a proportion factor to adjust a relationship between the location of the cursor and the movement velocity of the touch point, such that the location of the cursor is determined using the formula;
pT=p0+∫
0TaWtSt{right arrow over (v)}tdtwhere p0 represents a previous location of the cursor, a represents the proportion factor, Wt represents the feedback from the pressure sensor at moment t, St represents the contact area with the touch screen at moment t, and {right arrow over (v)}t represents the movement velocity of the touch point to the touch screen at moment t; and wherein at any moment in the pointing mode, an input area of the touch point is any area within the touch screen. - View Dependent Claims (2)
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Specification
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Current AssigneeInternational Business Machines Corporation
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Original AssigneeInternational Business Machines Corporation
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InventorsBao, Sheng Hua, Chen, Jian, Lu, Chengen, Ma, Rui, Su, Zhong, Wang, Rui
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Primary Examiner(s)Moon, Seokyun
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Assistant Examiner(s)Acha, III, Josemarie G
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Application NumberUS13/924,737Publication NumberTime in Patent Office778 DaysField of Search345/156, 345173-178, 345/157, 345/159, 345/160US Class Current1/1CPC Class CodesG06F 3/0488 using a touch-screen or dig...
