公开(公告)号：US20200251058A1

公开(公告)日：2020-08-06

申请号：US16854920

申请日：2020-04-22

Applicant: Novatek Microelectronics Corp.

Inventor： Chung-Wen Wu ,  Wen-Chi Lin ,  Jiun-Yi Lin

IPC: G09G3/34

Abstract: A circuit arrangement for controlling a backlight source and an operation method are provided. The circuit arrangement includes a generator. The generator receives a sync signal and generates a pulse width modulation signal synchronous with the sync signal to control the backlight source. The sync signal indicates a frequency of a video including a series of image frames. The sync signal includes a sync period corresponding to a frame of the video. The pulse width modulation signal includes a first waveform pattern in a first sub-period of the sync period and a second waveform pattern in a second sub-period of the sync period. Each of the first waveform pattern and the second waveform pattern includes at least one active pulse. The first waveform pattern is substantially identical to the second waveform pattern.

公开(公告)号：US20140198089A1

公开(公告)日：2014-07-17

申请号：US13909084

申请日：2013-06-04

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Chi Lin ,  Kuo-Chi Chen ,  Sih-Ting Wang ,  Wen-Hsuan Lin ,  Chung-Wen Wu

IPC: G06F1/32 ,  G09G3/36

CPC classification number: G06F1/32 ,  G06F1/3234 ,  G09G3/3611 ,  G09G2330/022 ,  Y02D50/20

Abstract: An image processing unit including an always on circuit block and a non-always on circuit block is provided. When operating under a first operation mode, the non-always on circuit block receives a bias voltage from a power supply unit, so as to perform an image processing operation on an image input signal. When operating under a second operation mode, the non-always on circuit block stops receiving the bias voltage from the power supply unit, so as to stop the image processing operation, and at least a microcontroller of the non-always on circuit block is powered down. One of the always on circuit block and the non-always on circuit block controls the power supply unit to stop supplying the bias voltage to the non-always on circuit block according an event trigger signal, such that the non-always on circuit block enters the second operation mode from the first operation mode.

Abstract translation: 提供一种包括总是在电路块和非始终在线电路块的图像处理单元。 当在第一操作模式下操作时，非始终接通电路块从电源单元接收偏置电压，以对图像输入信号执行图像处理操作。 当在第二操作模式下操作时，非始终在线电路块停止接收来自电源单元的偏置电压，以便停止图像处理操作，并且至少一个非始终在线电路块的微控制器被供电 下。 总是在电路块和不总是在电路块之一控制电源单元根据事件触发信号停止向非始终在线电路块提供偏置电压，使得不总是在电路块进入 从第一操作模式开始的第二操作模式。

公开(公告)号：USRE50213E1

公开(公告)日：2024-11-19

申请号：US17833906

申请日：2022-06-07

Applicant: Novatek Microelectronics Corp.

Inventor： Chung-Wen Wu ,  Wen-Chi Lin ,  Sih-Ting Wang

IPC: H03K7/08 ,  G02F1/13357 ,  G09G3/34

Abstract: A synchronous backlight device and an operation method thereof are provided. The synchronous backlight device includes a pulse width modulation (PWM) control circuit and a backlight driving circuit. The PWM control circuit receives the video sync information from a video processing circuit and generates a PWM control signal. Wherein, the video sync information defines a plurality of video frame periods, the PWM control circuit at least divides each of the video frame periods into a first period and a second period, the lengths of the first periods of the video frame periods are equal to one another. The frequency of the PWM control signal in the first periods is different from the frequency of the PWM control signal in the second periods. The backlight driving circuit drives the backlight source of a display panel in accordance with the PWM control signal.

公开(公告)号：US20230419915A1

公开(公告)日：2023-12-28

申请号：US17847199

申请日：2022-06-23

Applicant: NOVATEK Microelectronics Corp.

Inventor： Po-Hsiang Huang ,  Chung-Wen Wu ,  Jiun-Yi Lin ,  Wen-Chi Lin

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/342 ,  G09G3/3648 ,  G09G2310/08 ,  G09G2320/0257 ,  G09G2320/0233

Abstract: A method of backlight control for a display panel is provided. The display panel is configured to display with a variable refresh rate in a plurality of frame periods each having a fixed period and a variable period. The method includes steps of: generating a first backlight control signal in the fixed period of a frame period; determining whether a liquid crystal (LC) transition time corresponding to the frame period ends before an end time of the variable period of the frame period; generating a second backlight control signal in the variable period of the frame period when the LC transition time ends before the end time of the variable period of the frame period; and generating a compensation backlight control signal in a next frame period according to a backlight duty cycle of the frame period.

公开(公告)号：US11537349B2

公开(公告)日：2022-12-27

申请号：US17216701

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Chi Lin ,  Yuan-Yung Liao ,  Chung-Wen Wu ,  Chi-Han Lee ,  Jiun-Yi Lin ,  Po-Jui Huang ,  Chung-Wen Hung

IPC: G06F3/14 ,  F21V23/00 ,  G09G5/00

Abstract: The disclosure provides a light cabinet, including multiple light boards and multiple light-board controllers. The light boards form a first light-board array of the light cabinet. The light-board controllers are arranged one-to-one on the light boards. The light-board controllers of the light boards in a first column of the first light-board array are connected in series to form a first controller string. The output terminal of the first controller string is connected electrically to an input terminal of a second controller string in a corresponding column of a second light-board array of another light cabinet. The input terminal of the first controller string is connected electrically to a first output terminal of a video data splitter (or an output terminal of a third controller string in a corresponding column of a third light-board array of yet another light cabinet).

公开(公告)号：US20190164507A1

公开(公告)日：2019-05-30

申请号：US16163593

申请日：2018-10-18

Applicant: Novatek Microelectronics Corp.

Inventor： Chung-Wen Wu ,  Wen-Chi Lin ,  Jiun-Yi Lin

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/36 ,  G09G2310/06 ,  G09G2320/0247 ,  G09G2320/064 ,  G09G2320/0646 ,  G09G2320/10

Abstract: A circuit arrangement for controlling a backlight source and an operation method are provided. The circuit arrangement includes a generator. The generator receives a sync signal and generates a pulse width modulation signal synchronous with the sync signal to control the backlight source. The sync signal indicates a frequency of a video including a series of image frames. The sync signal includes a sync period corresponding to a frame of the video. The pulse width modulation signal includes a first waveform pattern in a first sub-period of the sync period and a second waveform pattern in a second sub-period of the sync period. Each of the first waveform pattern and the second waveform pattern includes at least one active pulse. The first waveform pattern is substantially identical to the second waveform pattern.

公开(公告)号：US09201483B2

公开(公告)日：2015-12-01

申请号：US13909084

申请日：2013-06-04

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Chi Lin ,  Kuo-Chi Chen ,  Sih-Ting Wang ,  Wen-Hsuan Lin ,  Chung-Wen Wu

IPC: G06F3/038 ,  G06F1/32 ,  G09G3/36

CPC classification number: G06F1/32 ,  G06F1/3234 ,  G09G3/3611 ,  G09G2330/022 ,  Y02D50/20

Abstract: An image processing unit including an always on circuit block and a non-always on circuit block is provided. When operating under a first operation mode, the non-always on circuit block receives a bias voltage from a power supply unit, so as to perform an image processing operation on an image input signal. When operating under a second operation mode, the non-always on circuit block stops receiving the bias voltage from the power supply unit, so as to stop the image processing operation, and at least a microcontroller of the non-always on circuit block is powered down. One of the always on circuit block and the non-always on circuit block controls the power supply unit to stop supplying the bias voltage to the non-always on circuit block according an event trigger signal, such that the non-always on circuit block enters the second operation mode from the first operation mode.

Abstract translation: 提供了包括总是在电路块和非始终在线电路块的图像处理单元。 当在第一操作模式下操作时，非始终接通电路块从电源单元接收偏置电压，以对图像输入信号执行图像处理操作。 当在第二操作模式下操作时，非始终在线电路块停止接收来自电源单元的偏置电压，以便停止图像处理操作，并且至少一个非始终在线电路块的微控制器被供电 下。 总是在电路块和不总是在电路块之一控制电源单元根据事件触发信号停止向不总是在电路块提供偏置电压，使得不总是在电路块进入 从第一操作模式开始的第二操作模式。