Method and device for converting sensing information

• US 20110084926A1
• Filed: 10/08/2010
• Published: 04/14/2011
• Est. Priority Date: 10/09/2009
• Status: Active Grant

• Current Assignee: eGalax_eMPIA Technology Inc.
• Original Assignee: eGalax_eMPIA Technology Inc.
• Inventors: Lee, Cheng-Han, Ho, Shun-Lung, Tang, Chi-Hao, Chang, Chin-Fu
• Granted Patent: US 8,896,548 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 3/04182 Filtering of noise external to the device and not generated by digitiser components
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

The method and device for converting sensing information are disclosed. Each first touch related sensing information of a first sensing information is detected. At least one of the first touch related sensing information is converted. Each converted first touch related sensing information is replaced by a corresponding second touch related sensing information, whereby the first sensing information is converted into a second sensing information.

Claims

1. A method for converting sensing information, comprising:

obtaining a first sensing information;

detecting each first touch related sensing information of the first sensing information; and

generating a second sensing information based on the first sensing information, the second sensing information being generated by replacing at least one of first touch related sensing information of the first sensing information with a second touch related sensing information.

2. The method of claim 1, wherein an accumulation conversion is performed on each first touch related sensing information to be replaced at least once to generate the second touch related sensing information, wherein the accumulation conversion converts each value of the first touch related sensing information to be replaced into an accumulation of said value with all the values preceding or following said value.

3. The method of claim 2, wherein the first sensing information includes a plurality of dual differences or differences, and the second sensing information includes a plurality of differences or a plurality of dual differences.

4. The method of claim 2, wherein an accumulation conversion is performed on each first touch related sensing information to be replaced twice to generate the second touch related sensing information, wherein one iteration of said accumulation conversion converts each value of the first touch related sensing information to be replaced into an accumulation of said value with all the values preceding said value, and the other iteration of said accumulation conversion converts each value of the first touch related sensing information to be replaced into an accumulation of said value with all the values following said value

5. The method of claim 1, wherein each value of each second sensing information is the difference between a pair of values of the first sensing information to be replaced.

6. The method of claim 1, wherein each value of each second sensing information is the difference or sum of a first difference and a second difference of the first sensing information to be replaced, wherein the first difference is the difference between prior two values among three values of the first sensing information to be replaced, and the second difference is the difference between latter two values among the three values of the first sensing information to be replaced.

7. The method of claim 1, wherein each first sensing information to be replaced includes a pair of peaks.

8. The method of claim 1, wherein each touch related sensing information in the first sensing information not replaced includes a single peak.

9. A device for converting sensing information, comprising a controller or a host for performing at least the following operations:

obtaining a first sensing information;

detecting each first touch related sensing information of the first sensing information; and

generating a second sensing information based on the first sensing information, the second sensing information being generated by replacing at least one of first touch related sensing information of the first sensing information with a second touch related sensing information.

10. The device of claim 9, wherein an accumulation conversion is performed on each first touch related sensing information to be replaced at least once to generate the second touch related sensing information, wherein the accumulation conversion converts each value of the first touch related sensing information to be replaced into an accumulation of said value with all the values preceding or following said value.

11. The device of claim 10, wherein the first sensing information includes a plurality of dual differences or differences, and the second sensing information includes a plurality of differences or a plurality of dual differences.

12. The device of claim 10, wherein an accumulation conversion is performed on each first touch related sensing information to be replaced twice to generate the second touch related sensing information, wherein one iteration of said accumulation conversion converts each value of the first touch related sensing information to be replaced into an accumulation of said value with all the values preceding said value, and the other iteration of said accumulation conversion converts each value of the first touch related sensing information to be replaced into an accumulation of said value with all the values following said value

13. The device of claim 9, wherein each value of each second sensing information is the difference between a pair of values of the first sensing information to be replaced.

14. The device of claim 9, wherein each value of each second sensing information is the difference or sum of a first difference and a second difference of the first sensing information to be replaced, wherein the first difference is the difference between prior two values among three values of the first sensing information to be replaced, and the second difference is the difference between latter two values among the three values of the first sensing information to be replaced.

15. The device of claim 14, wherein the three values are adjacent or not adjacent to one another.

16. The device of claim 9, wherein each touch related sensing information in the first sensing information not replaced includes a single peak.