公开(公告)号：US11481063B2

公开(公告)日：2022-10-25

申请号：US17037747

申请日：2020-09-30

Applicant: Novatek Microelectronics Corp.

Inventor： Li-Hsin Chen ,  Chin-Lin Lee ,  Hsiang-Cheng Yu

IPC: G06F3/041 ,  G06F3/04883

Abstract: A touch driving device and a touch movement track identification method are provided. The touch driving device includes a touch sensing circuit and a touch control circuit. The touch sensing circuit receives touch sensing signals from a touch sensor array when a touch display screen is operated in a display power saving mode, and generates digital touch sensing data according to the touch sensing signals. The touch control circuit periodically generates touch coordinates according to the digital touch sensing data, identifies whether an input symbol corresponding to a touch movement track formed by the touch coordinates generated consecutively matches a preconfigured symbol, and outputs a matching result to a core processing unit of the electronic device. The touch coordinates are generated when the orientation of the input symbol drawn on the touch display screen is not the same as a screen orientation of the touch display screen.

公开(公告)号：US20210064214A1

公开(公告)日：2021-03-04

申请号：US17008680

申请日：2020-09-01

Applicant: Novatek Microelectronics Corp.

Inventor： Yi-Chia Hsu ,  Hsiang-Cheng Yu ,  Chin-Lin Lee

IPC: G06F3/041

Abstract: The disclosure provides a touch display driving apparatus and an operation method thereof. The touch display driving apparatus is configured to drive a touch display panel. The touch display driving apparatus includes a touch sensing circuit configured to output a touch driving signal to a touch sensor array of the touch display panel, and receive touch sensing signals from the touch sensor array. The touch driving signal is configured to scan the touch sensor array at a normal scan rate in a normal touch scanning mode, and scan, in response to a touch event which is determined as occurring in a doze mode, the touch sensor array at a first scan rate in a fast touch scanning mode immediately preceding to the normal touch scanning mode, wherein the first scan rate is greater than the normal scan rate.

公开(公告)号：US11442575B2

公开(公告)日：2022-09-13

申请号：US17008680

申请日：2020-09-01

Applicant: Novatek Microelectronics Corp.

Inventor： Yi-Chia Hsu ,  Hsiang-Cheng Yu ,  Chin-Lin Lee

IPC: G06F3/041 ,  G06F3/044

Abstract: The disclosure provides a touch display driving apparatus and an operation method thereof. The touch display driving apparatus is configured to drive a touch display panel. The touch display driving apparatus includes a touch sensing circuit configured to output a touch driving signal to a touch sensor array of the touch display panel, and receive touch sensing signals from the touch sensor array. The touch driving signal is configured to scan the touch sensor array at a normal scan rate in a normal touch scanning mode, and scan, in response to a touch event which is determined as occurring in a doze mode, the touch sensor array at a first scan rate in a fast touch scanning mode immediately preceding to the normal touch scanning mode, wherein the first scan rate is greater than the normal scan rate.

公开(公告)号：US20210109634A1

公开(公告)日：2021-04-15

申请号：US17037747

申请日：2020-09-30

Applicant: Novatek Microelectronics Corp.

Inventor： Li-Hsin Chen ,  Chin-Lin Lee ,  Hsiang-Cheng Yu

IPC: G06F3/041 ,  G06F3/0488

Abstract: A touch driving device and a touch movement track identification method are provided. The touch driving device includes a touch sensing circuit and a touch control circuit. The touch sensing circuit receives touch sensing signals from a touch sensor array when a touch display screen is operated in a display power saving mode, and generates digital touch sensing data according to the touch sensing signals. The touch control circuit periodically generates touch coordinates according to the digital touch sensing data, identifies whether an input symbol corresponding to a touch movement track formed by the touch coordinates generated consecutively matches a preconfigured symbol, and outputs a matching result to a core processing unit of the electronic device. The touch coordinates are generated when the orientation of the input symbol drawn on the touch display screen is not the same as a screen orientation of the touch display screen.