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1.发明授权公开(公告)号：US11978410B2
公开(公告)日：2024-05-07
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 , G09G2320/0233 , G09G2320/0257
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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公开(公告)号：US10665177B2
公开(公告)日：2020-05-26
申请号：US16163593
申请日：2018-10-18
Applicant: Novatek Microelectronics Corp.
Inventor： Chung-Wen Wu , Wen-Chi Lin , Jiun-Yi Lin
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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公开(公告)号：US20220317965A1
公开(公告)日：2022-10-06
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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Patent Agency Ranking
公开(公告)号：US10984733B2
公开(公告)日：2021-04-20
申请号：US16854920
申请日：2020-04-22
Applicant: Novatek Microelectronics Corp.
Inventor： Chung-Wen Wu , Wen-Chi Lin , Jiun-Yi Lin
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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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.
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6.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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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：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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