公开(公告)号：US20180062647A1

公开(公告)日：2018-03-01

申请号：US15255138

申请日：2016-09-01

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Hung Chen

IPC: H03K17/687 ,  H02M3/07

Abstract: The invention is directed to the selectable mode buffer circuit including a plurality of pads, a mode selecting circuit, and a control circuit. The mode selecting circuit has a plurality of switches, coupled to the pads, and performs a charge pumping operation or an interfacing operating by changing on or off status of at least one of the switches according to a mode selecting signal. The control circuit receives the mode selecting signal, and generates a plurality of input signals for controlling the switches according to the mode selecting signal.

公开(公告)号：US20170351382A1

公开(公告)日：2017-12-07

申请号：US15663834

申请日：2017-07-31

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 noise detection device includes a drive circuit, a sense circuit and a controller. The drive circuit drives a plurality of drive lines having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period. The sense circuit senses a plurality of sense signals from at least one sense line during the predetermined time period. The controller derives a magnitude of a noise signal from the at least one sense line according to the sense signals.

公开(公告)号：US20150338448A1

公开(公告)日：2015-11-26

申请号：US14285604

申请日：2014-05-22

Applicant: Novatek Microelectronics Corp.

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

IPC: G01R29/26

CPC classification number: G01R29/26 ,  G06F3/0418 ,  G06F3/044

Abstract: A noise detection device, system, and a method of detecting noise signals are disclosed. The noise detection device includes a drive circuit, a sense circuit and a controller. The drive circuit drives a plurality of drive lines having a first polarity pattern and a second polarity pattern, wherein an operation of the first polarity pattern and the second polarity pattern substantially equals zero over a predetermined time period. The sense circuit senses a plurality of sense signals from at least one sense line during the predetermined time period. The controller derives a magnitude of a noise signal from the at least one sense line according to the sense signals.

Abstract translation: 公开了噪声检测装置，系统和检测噪声信号的方法。 噪声检测装置包括驱动电路，感测电路和控制器。 驱动电路驱动具有第一极性图案和第二极性图案的多个驱动线，其中第一极性图案和第二极性图案的操作在预定时间段内基本上等于零。 感测电路在预定时间段期间感测来自至少一个感测线的多个感测信号。 控制器根据感测信号从至少一个感测线导出噪声信号的幅度。

公开(公告)号：US20150309603A1

公开(公告)日：2015-10-29

申请号：US14475582

申请日：2014-09-03

Applicant: Novatek Microelectronics Corp.

Inventor： Hung-Cheng Kuo ,  Tsen-Wei Chang ,  Chun-Hung Chen

IPC: G06F3/041

CPC classification number: G06F3/041 ,  G06F3/0416 ,  G06K9/00503

Abstract: A phase compensation method for multi-scan in touch sensing system is provided. The phase compensation method includes the following steps. A plurality of carrier signals are received, and a demodulating operation is preformed on each of the carrier signals to obtain a first component signal and a second component signal of each of the carrier signals. An inverse matrix operation is respectively preformed on the first component signal and the second component signal both demodulated by the demodulating operation. A signal mixing operation is preformed on the first component signal and the second component signal both processed by the inverse matrix operation to obtain raw data of each of the carrier signals. Furthermore, a phase compensation circuit applying afore-said phase compensation method is also provided.

Abstract translation: 提供了一种用于触摸感测系统中多扫描的相位补偿方法。 相位补偿方法包括以下步骤。 接收多个载波信号，并且在每个载波信号上执行解调操作，以获得每个载波信号的第一分量信号和第二分量信号。 分别在通过解调操作解调的第一分量信号和第二分量信号上进行逆矩阵运算。 在第一分量信号和第二分量信号上执行信号混合操作，二者通过逆矩阵运算进行处理，以获得每个载波信号的原始数据。 此外，还提供了应用上述相位补偿方法的相位补偿电路。

公开(公告)号：US09024903B2

公开(公告)日：2015-05-05

申请号：US13938687

申请日：2013-07-10

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Hung Chen ,  Yi-Rong Ko ,  Shun-Li Wang

IPC: G09G5/00 ,  G06F3/044 ,  G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0418

Abstract: A detection method for a capacitive touch device is provided. The detection method includes steps of: driving an Mth driving line among an m driving lines of the capacitive touch device, wherein M is a natural number smaller than or equal to m and greater than 1; selecting a plurality of sensing lines among n sensing lines; obtaining a plurality of sensing values by detecting voltage changes at the selected sensing lines; determining whether to perform a noise reduction operation on the sensing values; if yes, calculating respective differences between the sensing values and a baseline value, and generating a noise correction value corresponding to the sensing values by performing a statistical computation on the differences; and correcting the differences according to the noise correction value.

Abstract translation: 提供了一种用于电容式触摸装置的检测方法。 检测方法包括以下步骤：驱动电容式触摸装置的m个驱动线中的第M个驱动线，其中M是小于或等于m且大于1的自然数; 在n个感测线中选择多个感测线; 通过检测所选择的感测线路上的电压变化来获得多个感测值; 确定是否对所述感测值执行降噪操作; 如果是，则计算感测值和基线值之间的差异，并通过对差异进行统计计算来产生与感测值对应的噪声校正值; 以及根据噪声校正值校正差异。

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。