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公开(公告)号：US12223138B1
公开(公告)日：2025-02-11
申请号：US18225156
申请日：2023-07-23
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chung-Yu Hsu
Abstract: A driving system includes a plurality of driver circuits each having a first terminal and a second terminal. The first terminal of each of the driver circuits is commonly coupled to a first transmission bus, and the second terminal of each of the driver circuits is commonly coupled to a second transmission bus. The driver circuits include a first driver circuit and a second driver circuit. The first driver circuit outputs a first synchronization signal to the first transmission bus through the first terminal. The second driver circuit outputs a second synchronization signal to the second transmission bus through the second terminal at the time when receiving the first synchronization signal from the first transmission bus. Wherein, a compensation time corresponding to the second driver circuit is calculated according to an output time point of the first synchronization signal and a reception time point of the second synchronization signal.
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公开(公告)号：US20250028409A1
公开(公告)日：2025-01-23
申请号：US18822422
申请日：2024-09-02
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chung-Yu Hsu
Abstract: A driving system includes a plurality of driver circuits each having a first terminal and a second terminal. The first terminal is commonly coupled to a first transmission bus, and the second terminal is commonly coupled to a second transmission bus. The driver circuits include a first driver circuit and at least one second driver circuit. Each second driver circuit generates a notification. The first driver circuit receives the notification from each second driver circuit, outputs a confirmation signal through the first terminal after receiving the notification, and starts a preset operation for sensing with a delay of a compensation time for the first driver circuit after outputting the confirmation signal. The second driver circuit further receives the confirmation signal through the first terminal, and starts the preset operation for sensing with a delay of a compensation time for the respective second driver circuit after receiving the confirmation signal.
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公开(公告)号：US12198583B1
公开(公告)日：2025-01-14
申请号：US18349973
申请日：2023-07-11
Applicant: NOVATEK Microelectronics Corp.
Inventor： Ching-Wu Tseng , Wei-Lun Shih
IPC: G09G3/00 , G09G3/3233
Abstract: A driver circuit is coupled to a control circuit which is configured to control a plurality of pixels. The driver circuit includes a detector circuit and an outputting circuit. The detector circuit is configured to detect whether an error occurs or not. The outputting circuit is configured to output an enable signal to the control circuit. When the error occurs, the enable signal changes from a first level to a second level such that the control circuit stops outputting a plurality of control signals to the plurality of pixels.
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公开(公告)号：US20250014507A1
公开(公告)日：2025-01-09
申请号：US18642813
申请日：2024-04-22
Applicant: Novatek Microelectronics Corp.
Inventor： Wen-Lung Hung , Yu-Yi Chien , Po-Yuan Hsieh
Abstract: A display apparatus includes a display screen and a driver circuit. The display screen includes a plurality of light boxes. Each of the light boxes includes a plurality of light panels. Each of the light panels includes a plurality of display pixels. The driver circuit is coupled to the display screen. The driver circuit is configured to drives the display screen to display an image. The driver circuit performs a first compensation operation on the display screen according to a first compensation data, and the first compensation data is calculated on the basis of the light panels. The driver circuit performs a second compensation operation on the display screen according to a second compensation data, and the second compensation data is calculated on the basis of the display pixels.
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公开(公告)号：US20250008242A1
公开(公告)日：2025-01-02
申请号：US18216606
申请日：2023-06-30
Applicant: NOVATEK Microelectronics Corp.
Inventor： Pai-Hsiang Hsu , Yueh-Ru Lee
Abstract: A comparator includes an input stage, a gain stage, an output stage and a clamp circuit. The input stage receives an input signal and a ramp signal and generates a first output signal. The gain stage, coupled to the input stage, receives the first output signal and generates a second output signal. The output stage, coupled to the gain stage, receives the second output signal and generates a third output signal. The clamp circuit, coupled to the gain stage and the output stage.
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Patent Agency Ranking
公开(公告)号：US12183231B1
公开(公告)日：2024-12-31
申请号：US18479124
申请日：2023-10-02
Applicant: Novatek Microelectronics Corp.
Inventor： Hsi-Mao Yu , Te-Hsien Kuo
IPC: G09G3/00
Abstract: A display driving circuit adapted to drive a display panel to display an image is provided. The display driving circuit includes a source driver circuit and a timing controller circuit. The source driver circuit is configured to sense whether noise occurs and output a lock signal. The lock signal indicates whether the noise occurs. The timing controller circuit is coupled to the source driver circuit, and configured to output image data to the source driver circuit and receive the lock signal from the source driver circuit. The timing controller circuit adjusts a data depth of the image data or a frame rate of the display panel when the lock signal indicates the noise occurs.
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公开(公告)号：US20240428722A1
公开(公告)日：2024-12-26
申请号：US18467050
申请日：2023-09-14
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： CHE-WEI YEH , YU-HSIANG WANG , HO-CHUN CHANG , PO-HSIANG FANG
IPC: G09G3/32
Abstract: A light-emitting-diode driver structure applicable to driving a display panel and operation method thereof are provided. The LED driver structure includes at least one LED driving group, and the LED driving group is composed of a plurality of LED driving circuits which are serially connected in cascade. Each LED driving circuit of the LED driving group receives a data input signal in common. Upon receiving control signals, output signals are generated to drive the display panel. The multi-point driving circuit scheme can be fully or partially applied in the driver structure as required. In addition, a plurality of enable signals can be further adopted to activate each LED driving circuit, for avoiding the FIFO register used in the prior arts. By employing the disclosed technical contents, the present invention is effective in reducing both redundant power waste and circuit layout area of a conventional LED driver.
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公开(公告)号：US20240413748A1
公开(公告)日：2024-12-12
申请号：US18331181
申请日：2023-06-08
Applicant: Novatek Microelectronics Corp.
Inventor： Tuo-Kuang Chen , Lo Pang-Yen Ting , Nien-Hsiu Yen
IPC: H02M3/156
Abstract: A power converting device includes a power transistor, a detecting device, a signal converter and a controller. The detecting device obtains a detection voltage by detecting an output voltage on the output end of the power converting device and a detection current by detecting an operation current of the power transistor. The signal converter converts the detection voltage from a first format to a second format, and converts the detection current from the first format to the second format. The controller receives the detection voltage and the detection current in the second format. Wherein the controller compares the detection voltage with a first voltage threshold value and a second voltage threshold value to adjust a control code, and generates a control signal to a control end of the power transistor according to the control code.
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公开(公告)号：US20240405658A1
公开(公告)日：2024-12-05
申请号：US18325080
申请日：2023-05-29
Applicant: Novatek Microelectronics Corp.
Inventor： Tuo-Kuang Chen , Jui-Chi Chang , Yi-Meng Lan , Yi-Chun Lee
Abstract: A power supply device and an operation method thereof are provided. The power supply device includes a charge pump circuit and a power supply circuit. The power supply circuit supplies a first power voltage to the charge pump circuit. The charge pump circuit converts the first power voltage into a second power voltage so as to supply the second power voltage to an application circuit. The power supply circuit detects the second power voltage or an output current output by the charge pump circuit to obtain a detection result. The power supply circuit dynamically adjusts the first power voltage based on the detection result.
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公开(公告)号：US20240397231A1
公开(公告)日：2024-11-28
申请号：US18320998
申请日：2023-05-22
Applicant: Novatek Microelectronics Corp.
Inventor： Min Huang , Chi-Ting Chen
IPC: H04N25/772 , G06V40/13
Abstract: A pixel reading device, which includes a first capacitor, a second capacitor, a voltage generating circuit, and an analog front-end (AFE) circuit, is provided. A first terminal of the first capacitor is coupled to a fingerprint sensing pixel to receive a sensing voltage. A first terminal of the second capacitor is coupled to a second terminal of the first capacitor. The voltage generating circuit provide a compensation voltage to a second terminal of the second capacitor. During a sensing period of the fingerprint sensing pixel, the compensation voltage is at an initial level. During a level reading period of the fingerprint sensing pixel, the compensation voltage is pulled up from the initial level to a compensation level to compensate a common mode component of the sensing voltage. An input terminal of the AFE circuit is coupled to the second terminal of the first capacitor.
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