公开(公告)号：US11327607B1

公开(公告)日：2022-05-10

申请号：US17398000

申请日：2021-08-10

Applicant: Novatek Microelectronics Corp.

Inventor： Yi-Cheng Lin ,  Che-Chia Hsu

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch detection circuit and a touch detection method are provided. The touch circuit coupled to touch areas of touch panel includes a touch controller and a detection circuit. The touch controller performs a touch detection on the touch areas sequentially. The detection circuit transmits a first detection signal to a boundary area of the touch areas which are not touch detected to receive a first feedback signal. The detection circuit transmits a second detection signal to a corresponding central area of the touch areas which are not touch detected to receive a second feedback signal. The touch controller compares the first feedback signal and the second feedback signal to generate a capacitance variation between the boundary area and the corresponding central area.

公开(公告)号：US20230350520A1

公开(公告)日：2023-11-02

申请号：US17889401

申请日：2022-08-17

Applicant: Novatek Microelectronics Corp.

Inventor： Chih Hsien Ou ,  ChengFeng Hsieh ,  Chin-Lin Lee ,  Che-Chia Hsu

IPC: G06F3/041 ,  G06F3/0354 ,  G06F3/038

CPC classification number: G06F3/0418 ,  G06F3/03545 ,  G06F3/038

Abstract: Provided is an electronic device including a touch panel, a communication unit, and a processing unit coupled to the touch control panel and the communication unit. The communication unit sends a detection signal and receives a response signal based on the detection signal. The processing unit determines an operation mode of the electronic device based on the response signal. The operation mode includes a first mode and a second mode. An input signal source of the electronic device of the first mode includes a finger. The input signal source of the second mode includes the finger and a stylus. When the response signal includes a pen-tip signal of the stylus and a pen-ring signal of the stylus, the processing unit determines whether to set the operation mode to the second mode according to the numerical relationship between the pen-tip signal and the pen-ring signal.

公开(公告)号：US11803272B1

公开(公告)日：2023-10-31

申请号：US17889401

申请日：2022-08-17

Applicant: Novatek Microelectronics Corp.

Inventor： Chih Hsien Ou ,  ChengFeng Hsieh ,  Chin-Lin Lee ,  Che-Chia Hsu

IPC: G06F3/041 ,  G06F3/038 ,  G06F3/0354

CPC classification number: G06F3/0418 ,  G06F3/038 ,  G06F3/03545

Abstract: Provided is an electronic device including a touch panel, a communication unit, and a processing unit coupled to the touch control panel and the communication unit. The communication unit sends a detection signal and receives a response signal based on the detection signal. The processing unit determines an operation mode of the electronic device based on the response signal. The operation mode includes a first mode and a second mode. An input signal source of the electronic device of the first mode includes a finger. The input signal source of the second mode includes the finger and a stylus. When the response signal includes a pen-tip signal of the stylus and a pen-ring signal of the stylus, the processing unit determines whether to set the operation mode to the second mode according to the numerical relationship between the pen-tip signal and the pen-ring signal.