Scanning control method with selection of driving channels according to touch signals

1 . A scanning control method for a touch display screen, comprising:

determining a first driving channel where a touch signal is detected and N driving channels adjacent to the first driving channel as first to-be-scanned driving channels, wherein the first driving channel is any one or more driving channels among a plurality of driving channels, and N is a positive integer;

selecting an unselected driving channel combination as second to-be-scanned driving channels, wherein the driving channel combination comprises at least one adjacent driving channel except the first to-be-scanned driving channels, and driving channels comprised by different driving channel combinations are not all the same;

providing a touch driving signal to the first to-be-scanned driving channels and the second to-be-scanned driving channels and obtaining a touch signal;

if a target driving channel where the touch signal is detected is inconsistent with the first driving channel, updating the target driving channel as the first driving channel; and

if the target driving channel where the touch signal is detected is consistent with the first driving channel, continuing to select an unselected driving channel combination as the second to-be-scanned driving channels until there are no unselected driving channel combinations,

wherein the selecting an unselected driving channel combination as second to-be-scanned driving channels comprises:

dividing the driving channels except the first to-be-scanned driving channels into a plurality of driving channel combinations in ascending order of distances from the first to-be-scanned driving channels; and

sequentially selecting an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channel combinations.

2 . The scanning control method for the touch display screen according to claim 1 , wherein the selecting an unselected driving channel combination as second to-be-scanned driving channels comprises:

sequentially selecting an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channels.

3 . The scanning control method for the touch display screen according to claim 2 , wherein different driving channel combinations each comprise the same number of driving channels;

the sequentially selecting an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channels comprises:

dividing the driving channels except the first to-be-scanned driving channels into a plurality of driving channel combinations in order of arrangement of the driving channels; and

sequentially selecting an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channel combinations.

4 . The scanning control method for the touch display screen according to claim 3 , wherein if the target driving channel where the touch signal is detected is consistent with the first driving channel, the continuing to select an unselected driving channel combination as the second to-be-scanned driving channels until there are no unselected driving channel combinations comprises:

if the target driving channel where the touch signal is detected is consistent with the first driving channel, continuing to select an unselected driving channel combination as the second to-be-scanned driving channels until the driving channel combination comprises the last driving channel.

5 . The scanning control method for the touch display screen according to claim 1 , wherein the number of driving channels comprised by different driving channel combinations sequentially increases in order of arrangement of the driving channel combinations;

the second driving channel combination comprises driving channels in the first driving channel combination; the second driving channel combination is adjacent to and behind the first driving channel combination in terms of the order of arrangement of the driving channel combinations.

6 . The scanning control method for the touch display screen according to claim 1 , wherein before determining a first driving channel where a touch signal is detected and N driving channels adjacent to the first driving channel as first to-be-scanned driving channels, the scanning control method for the touch display screen further comprises:

obtaining sensing data corresponding to each driving channel;

comparing the sensing data corresponding to each driving channel with preset benchmark data;

determining the sensing data corresponding to the driving channel with an absolute difference from the benchmark data greater than a preset threshold as valid sensing data; and

designating the valid sensing data as a touch signal.

7 . The scanning control method for the touch display screen according to claim 6 , wherein during the step of providing a touch driving signal to the first to-be-scanned driving channels and the second to-be-scanned driving channels and obtaining a touch signal, the first to-be-scanned driving channel and the second to-be-scanned driving channel are determined simultaneously.

8 . The scanning control method for the touch display screen according to claim 1 , wherein after providing a touch driving signal to the first to-be-scanned driving channels and the second to-be-scanned driving channels and obtaining a touch signal, the scanning control method for the touch display screen further comprises:

sending first sensing data and second sensing data to an upper computer controller, so that the upper computer controller calculates a position of a touch point on the touch display screen according to the first sensing data and the second sensing data, wherein the first sensing data comprises sensing data of a plurality of receiving channels corresponding to the first to-be-scanned driving channels, and the second sensing data comprises sensing data of a plurality of receiving channels corresponding to the second to-be-scanned driving channels.

9 . The scanning control method for the touch display screen according to claim 8 , wherein the sending first sensing data and second sensing data to an upper computer controller comprises:

sending the first sensing data and the second sensing data to the upper computer controller in a bulk transfer mode.

10 . The scanning control method for the touch display screen according to claim 8 , wherein before the sending first sensing data and second sensing data to an upper computer controller, the scanning control method for the touch display screen further comprises:

obtaining first sensing data and second sensing data, and simultaneously compressing the first sensing data and the second sensing data in a preset format.

11 . A scanning control system for a touch display screen, comprising:

a driving unit; and

a touch motherboard controller, wherein the touch motherboard controller is electrically connected to a plurality of driving channels through the driving unit, and the touch motherboard controller is configured to perform the scanning control method for the touch display screen according to claim 1 , divide the driving channels except the first to-be-scanned driving channels into a plurality of driving channel combinations in ascending order of distances from the first to-be-scanned driving channels, and sequentially select an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channel combinations.

12 . The scanning control system for the touch display screen according to claim 11 , wherein the touch motherboard controller is configured to sequentially select an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channels.

13 . The scanning control system for the touch display screen according to claim 12 , wherein the touch motherboard controller is configured to divide the driving channels except the first to-be-scanned driving channels into a plurality of driving channel combinations in order of arrangement of the driving channels and sequentially select an unselected driving channel combination as the second to-be-scanned driving channels in order of arrangement of the driving channel combinations.

14 . The scanning control system for the touch display screen according to claim 13 , wherein if the target driving channel where the touch signal is detected is consistent with the first driving channel, the touch motherboard controller is configured to continue to select an unselected driving channel combination as the second to-be-scanned driving channels until the driving channel combination comprises the last driving channel.

15 . The scanning control system for the touch display screen according to claim 11 , wherein the touch motherboard controller is electrically connected to an upper computer controller, and the touch motherboard controller is further configured to: send first sensing data and second sensing data to the upper computer controller, the first sensing data comprising sensing data of a plurality of receiving channels corresponding to a first to-be-scanned driving channels, and the second sensing data comprising sensing data of a plurality of receiving channels corresponding to a second to-be-scanned driving channels; and

the upper computer controller is configured to calculate a position of a touch point on the touch display screen according to the first sensing data and the second sensing data.

16 . The scanning control system for the touch display screen according to claim 11 , wherein the touch display screen further comprises a plurality of receiving channels, which intersect with and are insulated from the plurality of driving channels; and

the scanning control system for the touch display screen further comprises a signal collection unit, the plurality of receiving channels are electrically connected to the touch motherboard controller through the signal collection unit, and the signal collection unit is configured to collect sensing data of the plurality of receiving channels.

17 . A touch display device, comprising: a processor, a memory, and a computer program stored in the memory and executable by the processor, wherein the computer program, when executed by the processor, causes the steps of the scanning control method for the touch display screen according to claim 1 to be implemented.

18 . A non-transitory computer-readable storage medium, storing a computer program that, when executed by a processor, causes the steps of the scanning control method for the touch display screen according to claim 1 to be implemented.