公开(公告)号：US10474293B2

公开(公告)日：2019-11-12

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

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：US10473531B2

公开(公告)日：2019-11-12

申请号：US15695021

申请日：2017-09-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ying-Chieh Yen ,  Min-Hung Hu ,  Yuan-Te Chen ,  Cun-Kai Zhao ,  Chien-Chuan Huang

IPC: G01K11/00 ,  G01K7/16 ,  G02F1/1333 ,  H02H5/04

Abstract: A temperature sensor includes a plurality of temperature coefficient voltage generators, one or more converters and at least one variable voltage or current source. The temperature coefficient voltage generators are used for generating multiple temperature coefficient voltages. The converters, coupled to the temperature coefficient voltage generators, are used for converting the temperature coefficient voltages to digital values. The at least one variable voltage or current source, each coupled to at least one of the temperature coefficient voltage generators, includes a first variable voltage or current source for outputting a first voltage or current in a first time period, and outputting a second voltage or current in a second time period, wherein the second voltage or current is different from the first voltage or current such that there exists a shift between a first voltage-temperature curve in the first time period and a second voltage-temperature curve in the second time period.

公开(公告)号：US10461742B2

公开(公告)日：2019-10-29

申请号：US15255138

申请日：2016-09-01

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Hung Chen

IPC: H03K5/08 ,  H03F3/45 ,  H02M3/04 ,  G11C11/4074 ,  H03K17/16 ,  H03K17/687 ,  H02M3/07 ,  H03K17/12

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：US10459566B2

公开(公告)日：2019-10-29

申请号：US15605999

申请日：2017-05-26

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Ying Tang ,  Chih-Chang Lai

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch display panel includes a first patterned metal layer and a second patterned metal layer. The first patterned metal layer includes a first signal line and one or more first segments. The second patterned metal layer is disposed above the first patterned metal layer and includes a second signal line and one or more second segments, wherein the one or more second segments are electrically connected to the one or more first segments such that the one or more first segments and the one or more second segments collectively form at least a part of a touch sensing line.

公开(公告)号：US10438553B2

公开(公告)日：2019-10-08

申请号：US15633732

申请日：2017-06-26

Applicant: NOVATEK Microelectronics Corp.

Inventor： Cheng-Kai Kuei ,  Sheng-Wen Lai ,  Chin-Hung Hsu

IPC: G09G3/36

Abstract: A method of handling operation of a source driver of a display system used in a timing controller of a display system, which is coupled to the source driver via a data bus for delivering a plurality of line data, includes determining whether a first line data among the plurality of line data is identical to a second line data among the plurality of line data previous to the first line data; and transmitting a sleep command to the source driver when the first line data is determined to be identical to the second line data, wherein the sleep command instructs the source driver to enter a sleep mode; wherein the source driver stops receiving the plurality of line data from the timing controller when the source driver is in the sleep mode.

公开(公告)号：US20190297345A1

公开(公告)日：2019-09-26

申请号：US15927113

申请日：2018-03-21

Applicant: Novatek Microelectronics Corp.

Inventor： Fan-Di Jou

IPC: H04N19/573 ,  H04N19/159 ,  H04N19/172 ,  H04N19/147

Abstract: A video encoding apparatus and method are provided. The video encoding apparatus includes a video encoding circuit and a control circuit. The video encoding circuit performs a video encoding operation on a video stream to produce an encoded stream. The control circuit controls the video coding circuit to perform the video encoding operation. The control circuit dynamically sets a current frame in the video stream to at least one of a long-term reference frame, a short-term reference frame, and a non-reference frame according to at least one of a playback latency control condition and an inter-frame correlation condition. The long-term reference frame and the short-term reference frame are used as the decoding reference frame in a video decoding operation.

公开(公告)号：US10418998B1

公开(公告)日：2019-09-17

申请号：US16121638

申请日：2018-09-05

Applicant: Novatek Microelectronics Corp.

Inventor： Yen-Cheng Cheng

IPC: H03K19/0185 ,  H03K3/356

Abstract: A level shifter circuit which includes a cross-coupled latch and a set-reset latch is introduced. The level shifter circuit includes a first input node, a second input node and a plurality of switches. The first input node and the second input node are configured to receive a first digital input signal and a second digital input signal, respectively. The plurality of switches are configured to be switched on or off according to at least one control signal to output a first output signal and a second output signal. The set-reset latch is coupled to the cross-coupled latch and includes a set input node, a reset input node and an output node. The set input node and the reset input node are configured to receive the first output signal and the second output signal of the cross-coupled latch, respectively. The output node outputs a level-shifted output signal according to the first output signal and the second output signal of the cross-coupled latch. A method adapted to a level shifter circuit is also introduced.

公开(公告)号：US20190237041A1

公开(公告)日：2019-08-01

申请号：US16245232

申请日：2019-01-10

Applicant: Novatek Microelectronics Corp.

Inventor： Syang-Yun Tzeng ,  Cheng-Kai Kuei ,  Chin-Hung Hsu

IPC: G09G5/00

CPC classification number: G09G5/008 ,  G09G5/005 ,  G09G2370/08

Abstract: A timing controller and an operation method thereof are provided. The timing controller includes a transmitter circuit and a control circuit. The control circuit ends a normal mode to enter a swing boost mode when a lock signal fed back by a source driving circuit indicates that quality of data signal is deteriorated in the normal mode. In the swing boost mode, the control circuit controls the transmitter circuit to boost the swing of the data signal from a normal level to a high level. The control circuit ends the swing boost mode and enters a clock training mode when the source driving circuit causes loss of lock to the data signal in the swing boost mode. In the clock training mode, the control circuit controls the transmitter circuit to employ a clock training data string as the data signal to transmit to the source driving circuit.

公开(公告)号：US20190236996A1

公开(公告)日：2019-08-01

申请号：US16261586

申请日：2019-01-30

Applicant: Novatek Microelectronics Corp.

Inventor： Hsi-Mao Yu ,  Chin-Hung Hsu

IPC: G09G3/20 ,  G06F3/041 ,  H05K9/00

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G09G2310/0264 ,  H05K9/0022

Abstract: An integrated circuit (IC), a display device and an anti-interference method thereof are provided. The IC includes an input pad, a source driving circuit and an anti-interference circuit. The input pad receives an input signal comprising image data from the external. The source driving circuit is coupled to the input pad to receive the input signal. The anti-interference circuit is coupled to the input pad to provide a variable capacitance. The anti-interference circuit adjusts the variable capacitance from a normal capacitance value to at least one anti-interference capacitance value when an interference event occurs to the input signal. The anti-interference circuit maintains the variable capacitance at the normal capacitance value when the interference event does not occur.

公开(公告)号：US10367504B1

公开(公告)日：2019-07-30

申请号：US16116877

申请日：2018-08-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yen-Cheng Cheng

IPC: H03K19/00 ,  H03K19/0185

Abstract: A negative voltage level shifter includes a pair of input transistors, a pair of output transistors and a clamp circuit. The clamp circuit is coupled between the pair of input transistors and the pair of output transistors, for clamping source voltages of the pair of input transistors.