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公开(公告)号：US20190068843A1
公开(公告)日：2019-02-28
申请号：US15917867
申请日：2018-03-12
Applicant: Novatek Microelectronics Corp.
Inventor： Wen-Chi Lin
Abstract: A video interface conversion apparatus comprises a video interface circuit, a video clock adjustment information generation circuit and a video clock recovery circuit. The video interface circuit generates at least one original synchronization signal according to a control signal, and fetches video data from a data signal according to a video synchronization signal. The video clock adjustment information generation circuit generates video clock adjustment information and the video synchronization signal according to the original video synchronization signal and a video clock. The video clock recovery circuit receives an original clock and the video clock adjustment information, and recovers the video clock by adjusting the original clock according to the video clock adjustment information.
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公开(公告)号：US09311863B2
公开(公告)日：2016-04-12
申请号：US14078553
申请日：2013-11-13
Applicant: Novatek Microelectronics Corp.
Inventor： Hsing-Chuan Chen , Wen-Chi Lin
CPC classification number: G09G3/342 , G09G3/3406 , G09G3/3648 , G09G2320/0646 , G09G2360/16
Abstract: A dimming method and dimming device for a backlight module are provided. The dimming method includes the following steps. Light distribution information of a plurality of light sources of the backlight module corresponding to a display panel is provided. According to the light distribution information of each of the light sources, a plurality of light contribution ratios of the light sources corresponding to a plurality of different positions of the display panel are obtained respectively. According to the light contribution ratios corresponding to the different positions, the needed intensity of each of the light sources is determined respectively.
Abstract translation: 提供了用于背光模块的调光方法和调光装置。 调光方法包括以下步骤。 提供与显示面板对应的背光模块的多个光源的配光信息。 根据各光源的配光信息，分别获得与显示面板的多个不同位置对应的光源的多个光贡献率。 根据对应于不同位置的光贡献率，分别确定每个光源所需的强度。
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13.发明申请公开(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
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。
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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.
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15.发明公开公开(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
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.
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Patent Agency Ranking
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
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).
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公开(公告)号：US11508331B1
公开(公告)日：2022-11-22
申请号：US17243555
申请日：2021-04-28
Applicant: Novatek Microelectronics Corp.
Inventor： Wen-Chi Lin , Chin-Chu Wu , Chung-Wen Hung
IPC: G09G5/02 , G09G5/06 , G09G5/10 , G09G3/20 , G09G3/32 , G09G5/04 , G06T11/00 , G06T5/50 , H04N1/60 , H04N5/365 , H04N9/64 , H04N19/85
Abstract: The disclosure provides an image uniformity compensation device. The image uniformity compensation device includes a local pre-compensation circuit, a chromaticity uniformity compensation circuit, a local post-compensation circuit, and a luminance uniformity correction circuit. A local pre-conversion performed by the local pre-compensation circuit includes the following. An image frame is divided into multiple regions, and each of the regions is converted from an optical non-linear domain to an optical linear domain to generate a corresponding region in multiple regions of a converted frame. A local post-conversion performed by the local post-compensation circuit includes the following. An image frame is divided into multiple regions, and each of the regions is converted from the optical linear domain to the optical non-linear domain to generate a corresponding region in multiple regions of a converted frame.
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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.
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19.发明授权公开(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
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。
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公开(公告)号：US12125457B2
公开(公告)日：2024-10-22
申请号：US17539214
申请日：2021-12-01
Applicant: NOVATEK Microelectronics Corp.
Inventor： Wen-Chi Lin , Li-Wei Chen , Hsiang-Chih Chen , Pao-Yen Lin , Cheng-Wei Sung , Chung-Wen Hung
IPC: G09G5/00 , G09G5/12 , H04N21/4363
CPC classification number: G09G5/005 , G09G5/006 , G09G5/12 , H04N21/4363
Abstract: A signal processing circuit, complying with DisplayPort standard and operated in a display device which is as a DisplayPort sink device, includes a main physical circuit, which is configured to receive a first signal from one of a plurality of DisplayPort connectors of the display device connected to a first DisplayPort source device and a plurality of auxiliary physical circuits. Only a first auxiliary physical circuit of the plurality of auxiliary physical circuits is enabled to receive a second signal from the DisplayPort connector connected to the first DisplayPort source device.
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