Touch signal processing method and related touch device

1. A touch signal processing method, for a touch display integrated device including a plurality of touch display units, wherein the plurality of touch display units are concatenated and each of the plurality of touch display units includes a touch microcontroller unit (MCU), the touch signal processing method comprising:

sensing, by a sensing module of each of the plurality of touch display units, a physical area corresponding to each of the plurality of touch display units to generate a plurality of sensing raw data;

receiving, by each of the touch MCU of the plurality of touch display units, the plurality of sensing raw data;

passing, by an (n−1)-th touch MCU of the plurality of touch display units, a plurality of overlap sensing raw data corresponding to an overlap area of the physical area to an n-th touch MCU; and

determining, by each of the touch MCU of the plurality of touch display units, a coordinate information corresponding to a touch location of a processing area according to the plurality of sensing raw data corresponding to the physical area and the plurality of overlap sensing raw data corresponding to the overlap area;

wherein a horizontal width of the overlap area of the physical area is larger than a diameter of a maximal supportable touch area.

2. The touch signal processing method of claim 1 , further comprising:

reporting, by each of the touch MCU of the plurality of touch display units, the coordinate information corresponding to the touch location to a master touch MCU of a master touch display unit;

arranging, by the master touch MCU, the coordinate information corresponding to the touch location from each of the touch MCU of the plurality of touch display units; and

informing a host system of the touch display integrated device to collect the touch location.

3. The touch signal processing method of claim 1 , wherein each of the touch MCU of the plurality of touch display units is configured to report the touch location within a reporting area of the processing area.

4. The touch signal processing method of claim 3 , wherein the reporting area of the n-th touch MCU is composed of a part of the overlap area of the (n−1)-th touch MCU and a part of the overlap area of an (n+1)-th touch MCU.

5. The touch signal processing method of claim 3 , further comprising:

determining, by each of the touch MCU of the plurality of touch display units, at least an effective block of the processing area;

clustering, by each of the touch MCU of the plurality of touch display units, the at least an effective block of the processing area; and

determining, by each of the touch MCU of the plurality of touch display units, a center coordinate of gravity of each cluster of the at least an effective block.

6. The touch signal processing method of claim 5 , further comprising:

reporting, by each of the touch MCU of the plurality of touch display units, the center coordinate of gravity of each cluster to the master touch MCU of the master touch display unit when the center coordinate of gravity of each cluster belongs to the reporting area of corresponding processing area.

7. The touch signal processing method of claim 1 , wherein when a touch area is larger than the overlap area, the touch MCU of the plurality of touch display units is configured not to report the coordinate information corresponding to the touch location.

8. A touch display integrated device comprising:

a plurality of touch display units, wherein the plurality of touch display units are concatenated and each of the plurality of touch display units comprises:

a sensing module, configured to sense a physical area corresponding to each of the plurality of touch display units to generate a plurality of sensing raw data; and

a touch microcontroller unit (MCU), configured to receive the plurality of sensing raw data and determine a coordinate information corresponding to a touch location of a processing area according to the plurality of sensing raw data corresponding to the physical area and a plurality of overlap sensing raw data corresponding to an overlap area;

wherein the plurality of overlap sensing raw data corresponding to the overlap area of the physical area are passed by an (n−1)-th touch MCU of the plurality of touch display units to an n-th touch MCU;

wherein a horizontal width of the overlap area of the physical area is larger than a diameter of a maximal supportable touch area.

9. The touch display integrated device of claim 8 , further comprising:

a master touch display unit, concatenated to one of the plurality of touch display unit and the master touch display unit comprises a master touch MCU;

wherein the touch MCU of the plurality of touch display units is configured to report the coordinate information corresponding to the touch location to the master touch MCU of the master touch display unit;

wherein the master touch MCU is configured to arrange the coordinate information corresponding to the touch location from each of the touch MCU of the plurality of touch display units and inform a host system of the touch display integrated device to collect the touch location.

10. The touch display integrated device of claim 8 , wherein each of the touch MCU of the plurality of touch display units is configured to report the touch location within a reporting area of the processing area.

11. The touch display integrated device of claim 10 , wherein the reporting area of the n-th touch MCU is composed of a part of the overlap area of the (n−1)-th touch MCU and a part of the overlap area of an (n+1)-th touch MCU.

12. The touch display integrated device of claim 10 , wherein the touch MCU of the plurality of touch display units is configured to determine at least an effective block of the processing area; cluster the at least an effective block of the processing area; and determine a center coordinate of gravity of each cluster of the at least an effective block.

13. The touch display integrated device of claim 12 , wherein the touch MCU of the plurality of touch display units is configured to report the center coordinate of gravity of each cluster to the master touch MCU of the master touch display unit when the center coordinate of gravity of each cluster belongs to the reporting area of corresponding processing area.

14. The touch display integrated device of claim 8 , wherein when a touch area is larger than the overlap area, the touch MCU of the plurality of touch display units is configured not to report the coordinate information corresponding to the touch location.