IP Library › Granted Patent US 12693763
Granted Patent B2
US 12693763 · App. 18/380,210 · Granted Jul 28, 2026

Signal processing method and related circuit

Inventors: Yaw-Guang Chang (Tainan City, TW); Ren-Yuan Huang (Tainan City, TW); Yi-Yang Tsai (Tainan City, TW); Hao-Cheng Tsai (Tainan City, TW)
Assignee: HIMAX TECHNOLOGIES LIMITED
G06F3/0418G06F3/04166G06F3/044G06F2203/04107
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Quick Facts
Patent No.
US 12693763
App. No.
18/380,210
Granted
Jul 28, 2026
Kind
B2
Abstract

A circuit, for a touch panel, comprises a plurality of touch signal processing circuits, coupled to a plurality of sensors of the touch panel to receive a plurality of touch signals, wherein when a first sensor within the plurality of sensors is touched, the first sensor generates a first touch signal of the plurality of touch signals; and a controller, coupled to the plurality of touch signal processing circuits, configured to adjust the first touch signal according to the plurality of touch signals except the first touch signal.

Claims (27)

1 . A circuit, for a touch panel, comprising:

a first touch signal processing circuit, configured to receive a first touch signal generated by a first sensor of the touch panel, wherein the first sensor is touched;

a second touch signal processing circuit, configured to receive a second touch signal generated by a second sensor of the touch panel;

a third touch signal processing circuit, configured to receive a third touch signal generated by a third sensor of the touch panel; and

a controller, coupled to the first touch signal processing circuit, the second touch signal processing circuit and the third touch signal processing circuit, configured to process the second touch signal and the third touch signal to adjust the first touch signal, wherein at least one sensor of the second sensor and the third sensor is touched.

2 . The circuit of claim 1 , wherein each touch signal processing circuit of the first touch signal processing circuit, the second touch signal processing circuit and the third touch signal processing circuit comprises a compensation circuit;

wherein the compensation circuit of the first touch signal processing circuit is configured to process the second touch signal and the third touch signal and generate a first compensation touch signal;

wherein the controller adjusts the first touch signal according to the first compensation touch signal.

3 . The circuit of claim 2 , wherein the compensation circuit of the first touch signal processing circuit averages the second touch signal and the third touch signal and generates the first compensation touch signal.

4 . The circuit of claim 2 , wherein the controller further adjusts the first compensation touch signal and generates a second compensation touch signal according to a compensation algorithm when at least one sensor of the second sensor and the third sensor is touched, and the controller adjusts the first touch signal according to the second compensation touch signal.

5 . The circuit of claim 1 , wherein the controller further adjusts the first touch signal according to a compensation algorithm when at least one sensor of the second sensor and the third sensor is touched.

6 . A signal processing method, for a touch panel comprising a first sensor, a second sensor and a third sensor, comprising:

receiving a first touch signal generated by the first sensor, wherein the first sensor is touched;

receiving a second touch signal generated by the second sensor;

receiving a third touch signal generated by the third sensor; and

processing the second touch signal and the third touch signal to adjust the first touch signal;

wherein at least one sensor of the second sensor and the third sensor is touched.

7 . The signal processing method of claim 6 , wherein the step of processing the second touch signal and the third touch signal to adjust the first touch signal comprises:

processing the second touch signal and the third touch signal and generating a first compensation touch signal; and

adjusting the first touch signal according to the first compensation touch signal.

8 . The signal processing method of claim 7 , wherein the step of processing the second touch signal and the third touch signal and generating the first compensation touch signal comprises:

averaging the second touch signal and the third touch signal and generating the first compensation touch signal.

9 . The signal processing method of claim 7 , further comprising:

adjusting the first compensation touch signal and generating a second compensation touch signal according to a compensation algorithm when at least one sensor of the second sensor and the third sensor is touched; and

adjusting the first touch signal according to the second compensation touch signal.

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

adjusting the first touch signal according to a compensation algorithm when at least one sensor of the second sensor and the third sensor is touched.