公开(公告)号：US20240028151A1

公开(公告)日：2024-01-25

申请号：US18341776

申请日：2023-06-27

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yi-Ying LIN ,  Chih-Chang LAI

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0416 ,  G06F3/0446

Abstract: A control method, suitable for a controller in an interface device having capacitive sensors, includes following steps. The capacitive sensors are arranged on a plane. During a first period, the controller is configured to set the capacitive sensors as self-capacitance sensors individually. During a second period, the controller is configured to divide the capacitive sensors into at least a first group and a second group, set the first group of capacitive sensors as a mutual-capacitance transmitter and generate a pulse signal to the mutual-capacitance transmitter, set the second group of capacitive sensors as a mutual-capacitance receiver and collect a sensing signal from the mutual-capacitance receiver in response to the pulse signal.

公开(公告)号：US20240014644A1

公开(公告)日：2024-01-11

申请号：US17858032

申请日：2022-07-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hsiang-Yi Chiu

IPC: H02H3/08 ,  H02H1/00

CPC classification number: H02H3/08 ,  H02H1/0007

Abstract: A multi-channel circuit is provided. The multi-channel circuit includes a plurality of channel circuits and an overcurrent protection circuit. The channel circuits are configured to output sensing signals associated with channel output signals. Each channel circuit includes a channel output circuit for outputting a channel output signal and one of the sensing signals is associated with the channel output signal of the channel output circuit. The overcurrent protection circuit includes a selection circuit, a current sensing circuit and a comparator. The selection circuit is configured to receive sensing signals associated with channel output signals and select a target sensing signal from the sensing signals. The current sensing circuit is configured into convert the target sensing signal into a target sensing voltage. The comparator is configured to compare the target sensing voltage with a reference voltage to generate a comparison result indicating an overcurrent situation of the channel circuits.

公开(公告)号：US11842677B1

公开(公告)日：2023-12-12

申请号：US18073441

申请日：2022-12-01

Applicant: Novatek Microelectronics Corp.

Inventor： Sheng-Wen Hsiao

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/061 ,  G09G2310/08

Abstract: The disclosure provides a pixel circuit of a display panel. The pixel circuit includes a light-emitting element, a transistor, a first capacitor, a second capacitor, a first switch, and a second switch. The transistor is disposed in a driving current path to adjust the driving current of the light-emitting element. A first terminal of the first switch is coupled to a data line. A second terminal of the first switch is coupled to a first terminal of the first capacitor and a control terminal of the transistor. A first terminal of the second switch is coupled to a second terminal of the first capacitor and a first terminal of the second capacitor. A second terminal of the second switch is coupled to a first terminal of the transistor. A second terminal of the second capacitor is coupled to a reference voltage.

公开(公告)号：USRE49750E1

公开(公告)日：2023-12-05

申请号：US16183748

申请日：2018-11-08

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chien-Yu Chen ,  Kai-Wen Shao ,  Feng-Jung Kuo

IPC: H04W56/00 ,  H04N19/164 ,  H04N19/166 ,  H04N19/89 ,  H04N21/43 ,  G09G5/12 ,  G06F3/14 ,  G06F1/32 ,  G06F1/3218 ,  G06F1/324

CPC classification number: H04W56/00 ,  G06F1/324 ,  G06F1/3218 ,  G06F3/14 ,  G06F3/1415 ,  G09G5/12 ,  H04N19/164 ,  H04N19/166 ,  H04N19/89 ,  H04N21/4302

Abstract: A data transmission system is utilized in a Mobile Industry Processor Interface (MIPI). A master device includes a control module for generating a control signal according to a feedback signal. A packet encoding module is coupled to the control module for encoding an original packet to be a transmission packet according to the original packet and the control signal to process a transmission operation. A slave device includes a packet decoding module for decoding, the transmission packet to be the original packet or a related display device signal corresponding to the original packet to a display device. A feedback module is coupled to the packet decoding module for generating the feedback signal to the control module of the master device according to a decoding condition of the control module, so as to switch a transmission mode of the transmission operation.

公开(公告)号：US20230387937A1

公开(公告)日：2023-11-30

申请号：US17827822

申请日：2022-05-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Chih-Hsien Chou ,  Chieh-An Lin

IPC: H03M1/66 ,  G09G3/20

CPC classification number: H03M1/661 ,  G09G3/2007 ,  G09G2310/027 ,  G09G2310/0289

Abstract: The disclosure provides a digital-to-analog conversion device and an operation method thereof. The digital-to-analog conversion device includes a digital-to-analog conversion circuit and a slew rate enhancement circuit. The digital-to-analog conversion circuit is configured to convert a digital code into an analog voltage. An output terminal of the digital-to-analog conversion circuit outputs the analog voltage to a load circuit. A control terminal of the slew rate enhancement circuit is coupled to the digital-to-analog conversion circuit to receive a control voltage following the analog voltage. The slew rate enhancement circuit is coupled to the output terminal of the digital-to-analog conversion circuit. The slew rate enhancement circuit enhances the slew rate at the output terminal of the digital-to-analog conversion circuit based on the control voltage.

公开(公告)号：US20230386415A1

公开(公告)日：2023-11-30

申请号：US18203651

申请日：2023-05-31

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jhih-Siou Cheng

IPC: G09G3/3291

CPC classification number: G09G3/3291 ,  G09G2310/027 ,  G09G2320/0673 ,  G09G2300/0452 ,  G09G2320/0626 ,  G09G2330/028 ,  G09G3/2074

Abstract: A source driver includes a first DAC for driving a first-color subpixel and a second DAC for driving a second-color subpixel. Each DAC is configured to output at least one output voltage according to an N-bit data code, and includes a plurality of sub-DACs, an interpolation circuit and a switch circuit. Each sub-DAC receives m bits of the N-bit data code and generates a set of intermediate voltages accordingly. The interpolation circuit performs an interpolation on a selected set of intermediate voltages according to k bits of the N-bit data code and at least one interpolation control signal, to generate the output voltage. The switch circuit electrically connects the interpolation circuit and a selected sub-DAC which outputs the selected set of intermediate voltages. The interpolation circuit of the first DAC and the interpolation circuit of the second DAC respectively perform the interpolation according to different numbers of interpolation bits.

公开(公告)号：US20230378972A1

公开(公告)日：2023-11-23

申请号：US18106470

申请日：2023-02-06

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jin-Yi Lin ,  Jhih-Siou Cheng ,  Yung-Te Chang ,  Chih-Cheng Chen

IPC: H03M1/46 ,  H03M1/12 ,  H03M1/14

CPC classification number: H03M1/468 ,  H03M1/1245 ,  H03M1/462 ,  H03M1/145

Abstract: A sample and hold (S/H) circuit includes an analog-to-digital converter (ADC), a register and a digital-to-analog converter (DAC). The ADC receives an input signal and converts the input signal into a digital code. The register, coupled to the ADC, stores the digital code. The DAC, coupled to the register, converts the digital code into an output signal.

公开(公告)号：US11824449B2

公开(公告)日：2023-11-21

申请号：US17452232

申请日：2021-10-25

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ke Horng Chen ,  Kai-Syun Chang ,  Chin Hsiang Liang ,  Shu-Yung Lin

IPC: H02M3/158 ,  H02M1/00 ,  H02M3/07

CPC classification number: H02M3/1584 ,  H02M1/007 ,  H02M3/07 ,  H02M1/0095

Abstract: A switched-capacitor power stage includes a first sub-power stage. The first sub-power stage includes a first inductor, a first high switch, a first low switch, and a first set of switched-capacitor networks. The first inductor is coupled to an input terminal. The first high switch is coupled between the first inductor and an output terminal. The first low switch is coupled between the first inductor and a first transition node. The first set of switched-capacitor networks is coupled between the first transition node and the output terminal.

公开(公告)号：US11823602B2

公开(公告)日：2023-11-21

申请号：US17727837

申请日：2022-04-25

Applicant: Novatek Microelectronics Corp.

Inventor： Hsiu-Hui Yang ,  Yu-Shao Liu

IPC: G09G5/00 ,  G09G3/20

CPC classification number: G09G3/20 ,  G09G2300/08 ,  G09G2320/0219

Abstract: A layout arrangement of a driver integrated circuit includes multiple output pads, a plurality of switching circuits, and multiple data channel circuits. The output pads include a first output pad and a second output pad and are configurable to be coupled to a plurality of data lines. The switching circuits include a first switching circuit. A first selection terminal of the first switching circuit is coupled to the first output pad via a first connecting wire. A second selection terminal of the first switching circuit is coupled to the second output pad via a second connecting wire. The data channel circuits include a first data channel circuit. An output terminal of the first data channel circuit is coupled to a common terminal of the first switching circuit via a third connecting wire. The third connecting wire is longer than the first connecting wire and the second connecting wire.

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.