Apparatus and method for processing input on touch screen

• US 9,996,207 B2
• Filed: 08/28/2013
• Issued: 06/12/2018
• Est. Priority Date: 08/29/2012
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Joo-Hoon, Oh, Sang-Hyeok
• Primary Examiner(s): Mehmood, Jennifer
• Assistant Examiner(s): Adams, Carl
• Application Number:
  US14/012,303
• Publication Number:
  US 20140062929A1
• Time in Patent Office: 1,749 Days
• CPC Class Codes: G06F 2203/04101 2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0418 for error correction or compensation, e.g. based on parallax, calibration or alignment
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

An apparatus and method for processing a touch screen input are provided. The method includes determining if an input from an electronic pen on a touch screen is a contact input or a hovering input, calculating a coordinate of the electronic pen on an input sensing panel of the touch screen by applying a first preset movement determination reference filter in the contact input and applying a second preset movement determination reference filter in the hovering input, the second preset movement determination reference filter having a wider range than that of the first movement determination reference filter in the hovering input, and outputting a coordinate signal according to the calculated coordinate.

Claims

1. A touch screen input apparatus, the apparatus comprising:

an input sensing panel configured to receive at least one of a contact input or a hovering input of an electronic pen on a touch screen; and

an input sensing controller configured to;

process an input sensing signal provided from the input sensing panel,

determine whether the input sensing signal is one of the contact input or the hovering input,

generate a coordinate signal indicating an input location on the touch screen, and

process, when the input sensing signal is the hovering input, the input sensing signal according to a movement determination reference filter for the hovering input set to have a wider reference range for detecting movement parallel to a face of the touch screen in the hovering input rather than in the contact input,

wherein the movement determination reference filter has a variable reference range for determining whether the electronic pen is moved to a first coordinate from a second coordinate on the touch screen while receiving the hovering input of the electronic pen, and

wherein, when the electronic pen moves within the variable reference range, the coordinate signal is not generated.

2. The apparatus of claim 1, wherein the movement determination reference filter is set to have a different reference range in different regions of the input sensing panel on which the electronic pen is located, according to the contact input and the hovering input.

3. The apparatus of claim 2, wherein the different regions of the input sensing panel include at least a center region, an edge region and a corner region, and the movement determination reference filter is set so that the corner region, the edge region and the center region respectively have a wider reference range in listed order according to the contact input and the hovering input.

4. The apparatus of claim 3, wherein the input sensing panel is an Electro Magnetic Resonance (EMR) type sensing panel.

5. The apparatus of claim 2, wherein the input sensing panel is an Electro Magnetic Resonance (EMR) type sensing panel.

6. The apparatus of claim 1, wherein the input sensing controller is configured to determine if an input sensing signal corresponds to the hovering input or the contact input.

7. The apparatus of claim 6, wherein the input sensing panel is an Electro Magnetic Resonance (EMR) type sensing panel.

8. The apparatus of claim 1, wherein the input sensing panel is an Electro Magnetic Resonance (EMR) type sensing panel.

9. A method of processing a touch screen input, the method comprising:

determining if an input from an electronic pen on a touch screen is a contact input or a hovering input;

calculating a coordinate of the electronic pen on an input sensing panel of the touch screen by applying a first preset movement determination reference filter in the contact input and applying a second preset movement determination reference filter in the hovering input when the input from the electric pen is the hovering input, the second preset movement determination reference filter having a wider reference range for detecting movement parallel to a face of the touch screen than that of the first movement determination reference filter; and

outputting a coordinate signal according to the calculated coordinate,

wherein each of the first and second preset movement determination reference filter has a first and second reference range for determining whether the electronic pen is moved to a first coordinate from a second coordinate on the touch screen while receiving the hovering input of the electronic pen, and

wherein, when the electronic pen moves within the first and second reference range, the coordinate signal is not generated.

10. The method of claim 9, wherein the first and second movement determination reference filters are set to have a different reference range in different regions of the input sensing panel on which the electronic pen is located.

11. The method of claim 10, wherein the different regions of the input sensing panel include at least a center region, an edge region and a corner region, and the first and second movement determination reference filters are set so that the corner region, the edge region and the center region respectively have a wider reference range in listed order.

12. The method of claim 11, wherein the coordinate signal includes coordinate information of X axis and Y axis on the input sensing panel and information for determining the contact input or the hovering input.

13. The method of claim 10, wherein the coordinate signal includes coordinate information of X axis and Y axis on the input sensing panel and information for determining the contact input or the hovering input.

14. The method of claim 9, wherein the coordinate signal includes coordinate information of X axis and Y axis on the input sensing panel and information for determining the contact input or the hovering input.

15. The method of claim 9, wherein the determining of if the input from the electronic pen on the touch screen is the contact input or the hovering input comprises analyzing a frequency of an input sensing signal from the input sensing panel.

16. A non-transitory computer-readable storage medium storing instructions that, when executed, cause at least one processor to perform the method of claim 9.