METHOD AND DEVICE FOR ANALYZING TWO-DIMENSION SENSING INFORMATION

• US 20120075228A1
• Filed: 12/07/2011
• Published: 03/29/2012
• Est. Priority Date: 10/09/2009
• Status: Active Grant

• Current Assignee: eGalax_eMPIA Technology Inc.
• Original Assignee: eGalax_eMPIA Technology Inc.
• Inventors: Chang, Chin-Fu, Lee, Cheng-Han, Tang, Chi-Hao, Ho, Shun-Lung
• Granted Patent: US 8,872,776 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G01R 27/2605 Measuring capacitance capacitive sensors G01D5/24
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 2203/04104 Multi-touch detection in digitiser, i.e. details about the simultaneous detection of a plurality of touching locations, e.g. multiple fingers or pen and finger
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 3/03545 Pens or stylus
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04162 for exchanging data with external devices, e.g. smart pens, via the digitiser sensing hardware
• CPC Class Codes: G06F 3/04182 Filtering of noise external to the device and not generated by digitiser components
• CPC Class Codes: G06F 3/0441 using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
• CPC Class Codes: G06F 3/0442 using active external devices, e.g. active pens, for transmitting changes in electrical potential to be received by the digitiser
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

The method and device for analyzing two-dimension sensing information are disclosed. The two-dimension (2D) sensing information is analyzed for determining touch related sensing information. The touch related sensing information may include touch related sensing information with inner low values within outer high values and with inner higher values within outer low values.

Claims

1. A method for analyzing two-dimension (2D) sensing information, comprising:

obtaining a first 2D sensing information including a plurality of first one-dimension (1D) sensing information;

performing at least one accumulation conversion on each first 1D sensing information to constitute a second 2D sensing information, wherein the accumulation conversion includes converting each value in the 1D sensing information into an accumulation of the value and all other values preceding or following the value; and

performing an image segmentation on the 2D sensing information to determine each touch related sensing information in the 2D sensing information.

2. The method for analyzing 2D sensing information of claim 1, wherein the first 2D sensing information includes a plurality of differences.

3. The method for analyzing 2D sensing information of claim 1, wherein the first 2D sensing information includes a plurality of dual differences.

4. The method for analyzing 2D sensing information of claim 1, wherein the second 2D sensing information includes a plurality of differences.

5. The method for analyzing 2D sensing information of claim 1, wherein the second 2D sensing information includes a plurality of signal values.

6. The method for analyzing 2D sensing information of claim 1, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values preceding the value to generate a second 1D sensing information; and

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values following the value to generate a third 1D sensing information, wherein the second 2D sensing information includes these third 1D sensing information.

7. The method for analyzing 2D sensing information of claim 1, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values following the value to generate a second 1D sensing information; and

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values preceding the value to generate a third 1D sensing information, wherein the second 2D sensing information includes these third 1D sensing information.

8. The method for analyzing 2D sensing information of claim 1, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values preceding the value to generate a second 1D sensing information;

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values following the value to generate a third 1D sensing information, and

wherein the second 2D sensing information includes a plurality of fourth 1D sensing information, and each fourth 1D sensing information is generated by converting all negative values of one of these third 1D sensing information into positive values.

9. The method for analyzing 2D sensing information of claim 1, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values following the value to generate a second 1D sensing information;

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values preceding the value to generate a third 1D sensing information, and

wherein the second 2D sensing information includes a plurality of fourth 1D sensing information, and each fourth 1D sensing information is generated by converting all negative values of one of these third 1D sensing information into positive values.

10. The method for analyzing 2D sensing information of claim 1, wherein the 2D sensing information performs the image segmentation using a watershed algorithm or an object connecting algorithm.

11. A device for analyzing two-dimension (2D) sensing information, comprising one of a controller and a host for performing an analysis, comprising:

obtaining a first 2D sensing information including a plurality of first one-dimension (1D) sensing information;

performing at least one accumulation conversion on each first 1D sensing information to constitute a second 2D sensing information, wherein the accumulation conversion includes converting each value in the 1D sensing information into an accumulation of the value and all other values preceding or following the value; and

performing an image segmentation on the 2D sensing information to determine each touch related sensing information in the 2D sensing information.

12. The device for analyzing 2D sensing information of claim 11, wherein the first 2D sensing information includes a plurality of differences.

13. The device for analyzing 2D sensing information of claim 11, wherein the first 2D sensing information includes a plurality of dual differences.

14. The device for analyzing 2D sensing information of claim 11, wherein the second 2D sensing information includes a plurality of differences.

15. The device for analyzing 2D sensing information of claim 11, wherein the second 2D sensing information includes a plurality of signal values.

16. The device for analyzing 2D sensing information of claim 11, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values preceding the value to generate a second 1D sensing information; and

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values following the value to generate a third 1D sensing information, wherein the second 2D sensing information includes these third 1D sensing information.

17. The device for analyzing 2D sensing information of claim 11, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values following the value to generate a second 1D sensing information; and

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values preceding the value to generate a third 1D sensing information, wherein the second 2D sensing information includes these third 1D sensing information.

18. The device for analyzing 2D sensing information of claim 11, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values preceding the value to generate a second 1D sensing information;

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values following the value to generate a third 1D sensing information, and

wherein the second 2D sensing information includes a plurality of fourth 1D sensing information, and each fourth 1D sensing information is generated by converting all negative values of one of these third 1D sensing information into positive values.

19. The device for analyzing 2D sensing information of claim 11, wherein performing at least one accumulation conversion on each first 1D sensing information includes:

in a first accumulation conversion, converting each value in each first 1D sensing information into an accumulation of the value and all other values following the value to generate a second 1D sensing information;

in a second accumulation conversion, converting each value in each second 1D sensing information into an accumulation of the value and all other values preceding the value to generate a third 1D sensing information, and

wherein the second 2D sensing information includes a plurality of fourth 1D sensing information, and each fourth 1D sensing information is generated by converting all negative values of one of these third 1D sensing information into positive values.

20. The device for analyzing 2D sensing information of claim 11, wherein the 2D sensing information performs the image segmentation using a watershed algorithm or an object connecting algorithm.