Sensing driving device and sensing driving method
A sensing driving device includes a sensing circuit configured to obtain raw data from a panel; and a processor configured to obtain delta data from the raw data using a baseline value. The processor is configured to obtain whether the delta data is included in any one of a first range, a second range, and a third range, and detect different noises in accordance with the range in which the delta data is included. The first range is a range in which the delta data is located below the baseline value, the second range is a range in which the delta data is located between the baseline value and a touch-on threshold, and the third range is a range in which the delta data is located above the touch-on threshold. The touch-on threshold is greater than the baseline value.
1 . A sensing driving device, comprising:
a sensing circuit configured to obtain raw data from a panel; and
a processor configured to obtain delta data from the raw data using a baseline value,
wherein the processor is configured to:
detect one type of noise from among a plurality of noise types based on whether the delta data is included in any one of a first range, a second range, and a third range, and
change a driving frequency of the panel to one of a plurality of hopping frequencies based on the detected type of noise,
wherein the first range is a range in which the delta data is located below the baseline value, the second range is a range in which the delta data is located between the baseline value and a touch-on threshold, and the third range is a range in which the delta data is located above the touch-on threshold, and
wherein the touch-on threshold is greater than the baseline value.
2 . The sensing driving device of claim 1 , wherein the processor is configured to:
when the delta data is included in the first range, obtain whether the coordinate of a current frame is located in a peripheral node of a predicted coordinate of a previous frame,
when the coordinate of the current frame is not located in the peripheral node of the predicted coordinate of the previous frame, detect the one type of noise as a first noise, and
when the first noise is detected, change the driving frequency to a first hopping frequency.
3 . The sensing driving device of claim 2 , wherein the processor is configured to invert a sign of the delta data of the current frame when the coordinate of the current frame is located in the peripheral node of the predicted coordinate of the previous frame.
4 . The sensing driving device of claim 1 , wherein the processor is configured to:
when the delta data is included in the second range, obtain whether a touch on/off toggle occurs,
when the touch on/off toggle is occurred, detect the one type of noise as a second noise, and
when the second noise is detected, change the driving frequency to a second hopping frequency.
5 . The sensing driving device of claim 4 , wherein the processor is configured to obtain whether to change to the second hopping frequency based on a difference between the current delta data and the previous delta data when the touch on/off toggle is occurred.
6 . The sensing driving device of claim 5 , wherein the previous delta data is an average value of a maximum delta data of each of preset frames.
7 . The sensing driving device of claim 4 , wherein the processor is configured to determine the delta data as no touch when the touch on/off toggle does not occur.
8 . The sensing driving device of claim 1 , wherein the processor is configured to:
when the delta data is included in the third range, detect whether the one type of noise is a third noise, and
when the third noise is detected, change the driving frequency to a third hopping frequency.
9 . The sensing driving device of claim 8 , wherein the processor is configured to determine whether the one type of noise is the third noise based on a difference between the current delta data and the previous delta data.
10 . A sensing driving method, comprising:
detecting one type of noise from among a plurality of noise types based on whether delta data is included in any one of a first range, a second range, and a third range; and
changing a driving frequency of a panel to one of a plurality of hopping frequencies based on the detected type of noise,
wherein the delta data is obtained from the raw data using a baseline value,
wherein the first range is a range in which the delta data is located below the baseline value, the second range is a range in which the delta data is located between the baseline value and a touch-on threshold, and the third range is a range in which the delta data is located above the touch-on threshold, and
wherein the touch-on threshold is greater than the baseline value.
11 . The sensing driving method of claim 10 , further comprising:
when the delta data is included in the first range, obtaining whether a coordinate of a current frame is located in a peripheral node of a predicted coordinate of a previous frame;
when the coordinate of the current frame is not located in the peripheral node of the predicted coordinate of the previous frame, detecting the one type of noise as a first noise; and
when the first noise is detected, changing the driving frequency to a first hopping frequency.
12 . The sensing driving method of claim 11 , further comprising inverting a sign of the delta data of the current frame when the coordinate of the current frame is located in the peripheral node of the predicted coordinate of the previous frame.
13 . The sensing driving method of claim 10 , further comprising:
when the delta data is included in the second range, determining whether a touch on/off toggle occurs;
when the touch on/off toggle is occurred, detecting the one type of noise as a second noise; and
when the second noise is detected, changing the driving frequency to a second hopping frequency.
14 . The sensing driving method of claim 13 , further comprising determining whether to change to the second hopping frequency based on a difference between the current delta data and the previous delta data when the touch on/off toggle is occurred.
15 . The sensing driving method of claim 14 , wherein the previous delta data is an average value of a maximum delta data of each of preset frames.
16 . The sensing driving method of claim 13 , further comprising determining the delta data as no touch when the touch on/off toggle does not occur.
17 . The sensing driving method of claim 10 , further comprising:
when the delta data is included in the third range, determining whether the one type of noise is a third noise; and
when the third noise is detected, changing the driving frequency to a third hopping frequency.
18 . The sensing driving method of claim 17 , further comprising detecting whether the one type of noise is the third noise based on a difference between the current delta data and the previous delta data.