IP Library › Granted Patent US 9,134,836
Granted Patent B2
US 9,134,836 · App. 14/164,521 · Granted Sep 15, 2015

Electronic device with touch panel for decreasing pointer wobble

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Quick Facts
Patent No.
US 9,134,836
App. No.
14/164,521
Filed
Jan 27, 2014
Granted
Sep 15, 2015
Kind
B2
Art Unit
2699
USPC
345/173
Abstract

Provided is an electronic device. The electronic device includes a planar display unit, and a touch panel which is disposed so as to overlap the display unit and is capable of detecting a vertical distance between two-dimensional coordinates along a surface of the display unit and a finger. Resolution of the two-dimensional coordinates becomes finer as the vertical distance decreases. Thus, even when the operating finger is immobilized in a state where the electronic device is fixed, a display of a pointer is not wobbled or a display of a screen is not wobbled. In addition, when a line is drawn using a drawing mode, the line is not displayed jaggedly.

Claims (17)

1. An electronic device comprising:

a planar display; and

a touch panel that overlaps the display and is capable of detecting a two-dimensional coordinate along a surface of the display corresponding to a position of an indicator and a vertical distance between the touch panel and the indicator,

wherein, when the vertical distance is within a predetermined range greater than zero, a pointer is capable of being output at the two-dimensional coordinate on the display,

wherein a two-dimensional coordinate at which the pointer is to be output is capable of being stored,

wherein a two-dimensional distance between the stored two-dimensional coordinate and a new two-dimensional coordinate is calculated,

wherein when the calculated two-dimensional distance is equal to or less than a predetermined value, the pointer is output at the stored two-dimensional coordinate on the display, the predetermined value decreasing as the vertical distance decreases, and

wherein, when the calculated two-dimensional distance is greater than the predetermined value, the pointer is output at the new two-dimensional coordinate on the display.

2. The electronic device according to claim 1 , wherein the new two-dimensional coordinate is stored in place of the stored two-dimensional coordinate.

3. The electronic device according to claim 1 , wherein the predetermined value is minimized when the vertical distance is minimized.

4. The electronic device according to claim 1 , wherein the predetermined value is switched in at least two stages.

5. An operation method of an electronic device including a planar display and a touch panel that overlaps the display, the operation method comprising:

storing a two-dimensional coordinate at which a pointer is to be output on the display;

detecting, by the touch panel, a new two-dimensional coordinate along a surface of the display corresponding to a position of an indicator and a vertical distance between the touch panel and the indicator;

calculating, when the vertical distance is within a predetermined range greater than zero, a two-dimensional distance between the stored two-dimensional coordinate and the new two-dimensional coordinate;

outputting, when the calculated two-dimensional distance is equal to or less than a predetermined value, the pointer at the stored two-dimensional coordinate on the display, the predetermined value decreasing as the vertical distance decreases; and

outputting, when the calculated two-dimensional distance is greater than the predetermined value, the pointer at the new two-dimensional coordinate on the display.