公开(公告)号：US20190107916A1

公开(公告)日：2019-04-11

申请号：US15726404

申请日：2017-10-06

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hung-Cheng Kuo ,  Yung-Fu Lin ,  Chun-Hung Chen ,  Ting-Hsuan Hung

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0418 ,  G06F3/044

Abstract: A signal processing method for a touch panel includes transmitting a first driving signal to a first touch channel of the touch panel; and transmitting a second driving signal to a second touch channel of the touch panel, wherein the second touch channel is neighboring to the first touch channel. The first driving signal is substantially identical to the second driving signal during a first period, and the first driving signal is substantially inverse to the second driving signal during a second period neighboring to the first period.

公开(公告)号：US20180157374A1

公开(公告)日：2018-06-07

申请号：US15889228

申请日：2018-02-06

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hung-Cheng Kuo ,  Chun-Hung Chen ,  Chun-Ching Huang

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/041

Abstract: A method of determining a touch event in a touch detection system includes: receiving at least one sensing signal corresponding to at least one driving signal configured to drive a touch panel; determining whether a touch event occurs by performing an initial digital operation on the at least one sensing signal; performing an entire determination on the at least one sensing signal after at least one of one or more predetermined conditions is determined to be satisfied, wherein one of the one or more predetermined conditions is that the touch event is determined to occur; and not performing the entire determination on the at least one sensing signal after each of the one or more predetermined conditions is determined to be unsatisfied.

公开(公告)号：US09766752B2

公开(公告)日：2017-09-19

申请号：US14710618

申请日：2015-05-13

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hung-Cheng Kuo ,  Chun-Hung Chen ,  Chun-Ching Huang

IPC: G06F13/12 ,  G06F13/38 ,  G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/041

Abstract: A method of determining a touch event in a touch detection system includes transmitting at least one driving signal to a touch panel of the touch detection system; receiving a sensing signal corresponding to the driving signal from the touch panel; determining whether the touch event occurs by performing an initial digital operation on the sensing signal; determining whether the sensing signal is interfered with by a noise signal; and performing an entire determination on the sensing signal when the touch event is determined to occur or the sensing signal is determined to be interfered with by the noise signal.

公开(公告)号：US08810288B2

公开(公告)日：2014-08-19

申请号：US13786481

申请日：2013-03-06

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Hung Chen

IPC: H03B1/00

CPC classification number: H03K3/012 ,  H03F3/3023 ,  H03F3/45183 ,  H03F3/45219 ,  H03F2203/45634 ,  H03F2203/45674 ,  H03K19/00

Abstract: An output buffer is disclosed. The output buffer includes an input-stage circuit, an output-stage circuit and a compensation circuit. The compensation circuit includes a capacitor, a first switch, a second switch, a third switch, and a fourth switch. The input-stage circuit receives a differential input signal and outputting a response signal. The output-stage circuit receives the response signal and outputting an output signal. The first switch controls a connection between the input-stage circuit and a first terminal of the capacitor. The second switch controls the connection between an output terminal of the compensation circuit and a second terminal of the capacitor. The third switch controls the connection between the input-stage circuit and the second-terminal of the capacitor. The forth switch controls the connection between the output terminal of the compensation circuit and the first terminal of the capacitor.

Abstract translation: 公开了输出缓冲器。 输出缓冲器包括输入级电路，输出级电路和补偿电路。 补偿电路包括电容器，第一开关，第二开关，第三开关和第四开关。 输入级电路接收差分输入信号并输出​​响应信号。 输出级电路接收响应信号并输出​​输出信号。 第一开关控制输入级电路和电容器的第一端之间的连接。 第二开关控制补偿电路的输出端子和电容器的第二端子之间的连接。 第三开关控制输入级电路和电容器的第二端之间的连接。 第四开关控制补偿电路的输出端子与电容器的第一端子之间的连接。

公开(公告)号：US20220326834A1

公开(公告)日：2022-10-13

申请号：US17731785

申请日：2022-04-28

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chun-Hung Chen ,  Kai-Wen Shao ,  Feng-Lin Chan ,  Shuo-Wen Jang

IPC: G06F3/041 ,  G09G3/3233 ,  G06F3/044 ,  G09G3/3208

Abstract: The disclosure provides a method for driving an OLED touch-and-display device, a driving circuit, and an OLED touch-and-display device. The method includes: generating gate driving signals that are sequentially shifted based on the first clock signal (GCK); sequentially applying the gate driving signals that are sequentially shifted to the plurality of GLs; writing display data in a display driving period for each row of pixels, to the row of pixels, wherein a time length of the display driving period depends on a corresponding gate driving signal and is smaller than the clock cycle; and for a display driving period for each of at least one row of pixels, setting a touch detection period corresponding to the display driving period or corresponding to the display driving period for previous row of pixels at least partially overlapping with the display driving period in time.

公开(公告)号：US11353991B2

公开(公告)日：2022-06-07

申请号：US17313810

申请日：2021-05-06

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chun-Hung Chen ,  Kai-Wen Shao ,  Feng-Lin Chan ,  Shuo-Wen Jang

IPC: G06F3/041 ,  G09G3/3233 ,  G06F3/044 ,  G09G3/3208

Abstract: The disclosure provides a method for driving an OLED touch-and-display device, a driving circuit, and an OLED touch-and-display device. The method includes: generating gate driving signals that are sequentially shifted based on the first clock signal (GCK); sequentially applying the gate driving signals that are sequentially shifted to the plurality of GLs; writing display data in a display driving period for each row of pixels, to the row of pixels, wherein a time length of the display driving period depends on a corresponding gate driving signal and is smaller than the clock cycle; and for a display driving period for each of at least one row of pixels, setting a touch detection period corresponding to the display driving period or corresponding to the display driving period for previous row of pixels at least partially overlapping with the display driving period in time.

公开(公告)号：US10289245B2

公开(公告)日：2019-05-14

申请号：US14607031

申请日：2015-01-27

Applicant: Novatek Microelectronics Corp.

Inventor： Hung-Cheng Kuo ,  Po-Wei Chen ,  Chun-Hung Chen

IPC: G06F3/041 ,  G06F3/044

Abstract: A noise detection method including the following steps is provided. During different time periods, plural sets of driving signals are respectively transmitted to driving lines of the touch panel to drive sensing lines of the touch panel to generate plural sets of sensing signals. The plural sets of sensing signals are respectively received and calculated to obtain plural sets of summation signals. One set of summation signals includes first summation signals, and another set of summation signals includes second summation signals. A part or all of the first summation signals is replaced by the second summation signals. A signal value of a combination of the first and the second summation signals is calculated to obtain a summation thereof. The summation of the signal value of the combination is smaller than a summation of a signal values of the first summation signals before recombination.

公开(公告)号：US20170123523A1

公开(公告)日：2017-05-04

申请号：US14925986

申请日：2015-10-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Ching Huang ,  Hung-Cheng Kuo ,  Chun-Hung Chen

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0418 ,  G06F3/044

Abstract: A carrier touch sensing system includes a demodulation circuit coupled to a touch panel, used for performing in-phase and quadrature demodulations to a plurality of carrier sensing signals to generate and store a plurality of phase delay information if the carrier touch sensing system operates in a phase calibration mode. The demodulation circuit is further used for performing in-phase demodulation to the plurality of carrier sensing signals according to the plurality of phase delay information to generate a plurality of touch signals if the carrier touch sensing system operates in a normal scan mode.

公开(公告)号：US20140368223A1

公开(公告)日：2014-12-18

申请号：US14474296

申请日：2014-09-01

Applicant: NOVATEK Microelectronics Corp.

Inventor： He-Wei Huang ,  Chun-Hung Chen ,  Chih-Yuan Chang

IPC: G01R27/26

CPC classification number: G01R27/2605 ,  G06F3/044 ,  H03K17/962 ,  H03K2217/960725

Abstract: A capacitance measurement device for measuring the capacitance of a measured capacitor includes a charging control unit for charging the measured capacitor; a discharging control unit for discharging the measured capacitor; a voltage converting circuit coupled to the measured capacitor, for converting a voltage signal on the measured capacitor into a value that represents the capacitance of the measured capacitor; wherein in a first period, one of the charging control unit and the discharge control unit charges/discharges the measured capacitor and in a second period after the first period, the other one of the charging control unit and the discharge control unit discharges/charges the measured capacitor.

Abstract translation: 用于测量测量电容器的电容的电容测量装置包括用于对测量的电容器进行充电的充电控制单元; 放电控制单元，用于对测量的电容器进行放电; 耦合到测量的电容器的电压转换电路，用于将测量的电容器上的电压信号转换成表示测量的电容器的电容的值; 其中，在第一时段中，所述充电控制单元和所述放电控制单元之一对所测量的电容器进行充电/放电，并且在所述第一时段之后的第二时段中，所述充电控制单元和所述放电控制单元中的另一个对所述电容器进行放电/充电 测量电容。

公开(公告)号：US20140092033A1

公开(公告)日：2014-04-03

申请号：US13747486

申请日：2013-01-23

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Hui-Hung Chang ,  Chun-Hung Chen

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0418 ,  G06F3/044

Abstract: A touch detection method for a touch panel. The touch panel has a plurality of sensing nodes. Each sensing node has a baseline value. Each sensing node is sensed to obtain a scanned value. A touch event is detected according to a comparison with a finger-on threshold. When there is no touch event, the method detects whether or not an abnormal object has entered the sensing node. When entered, the method judges whether a difference count between the scanned value and baseline value is larger than a calibration level. When the difference count is larger, then the scanned value is used to update the baseline value. When no abnormal object, then the method judges whether the difference count is larger than a noise threshold. When the difference count is larger, then the scanned value is used to update the baseline value. The calibration level is smaller than finger-on threshold.

Abstract translation: 触摸面板的触摸检测方法。 触摸面板具有多个感测节点。 每个感测节点具有基线值。 感测每个感测节点以获得扫描值。 根据与手指阈值的比较来检测触摸事件。 当没有触摸事件时，该方法检测异常对象是否已进入感测节点。 当输入时，该方法判断扫描值和基线值之间的差异计数是否大于校准水平。 当差值计数较大时，则使用扫描值更新基线值。 当没有异常对象时，该方法判断差值是否大于噪声阈值。 当差值计数较大时，则使用扫描值更新基线值。 校准水平小于手指阈值。