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公开(公告)号：US09007121B2
公开(公告)日：2015-04-14
申请号：US14010499
申请日：2013-08-26
Applicant: NOVATEK Microelectronics Corp.
Inventor： Hsiang-Yi Chiu , Zhen-Guo Ding
Abstract: A charge pump device is disclosed. The charge pump device includes a driving stage, for generating a driving signal corresponding to a driving capability; a charge pump circuit, for generating an output voltage according to the driving signal; a comparing circuit, comprising a first comparator for comparing the output voltage and a first reference voltage to generate a first comparing result; an overload detection circuit, for generating a detection result according to at least one of the first comparing result and the output voltage; and a driving capability control circuit, coupled between the overload detection circuit and the driving stage for controlling the driving capability corresponding to the driving signal according to the detection result.
Abstract translation: 公开了电荷泵装置。 电荷泵装置包括用于产生与驱动能力对应的驱动信号的驱动级; 电荷泵电路，用于根据驱动信号产生输出电压; 比较电路，包括用于比较输出电压和第一参考电压以产生第一比较结果的第一比较器; 过载检测电路，用于根据第一比较结果和输出电压中的至少一个产生检测结果; 以及驱动能力控制电路，其耦合在过载检测电路和驱动级之间，用于根据检测结果控制与驱动信号相对应的驱动能力。
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公开(公告)号：US12088198B2
公开(公告)日：2024-09-10
申请号：US17646481
申请日：2021-12-30
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-Ju Tsai , Ching-Jan Chen , Zhen-Guo Ding , Zhe-Hui Lin , Wei-Ling Chen
CPC classification number: H02M3/158 , H02M1/0025 , H02M3/157
Abstract: A power stage circuit generates an output signal according to an input signal and a control signal. A ramp generator circuit generates a ramp signal according to the control signal, the input signal, and the output signal. A calculation circuit generates a calculation signal according to the output signal and a reference signal. The calculation circuit operates in a first mode when the power converter operates in a light loading state, and the calculation circuit operates in a second mode when the power converter operates in a normal state. A control circuit generates the control signal according to the calculation signal and the ramp signal. The control circuit includes a comparator circuit and a control signal generator. The comparator circuit generates a comparison signal according to the calculation signal and the ramp signal. The control signal generator generates the control signal according to the comparison signal.
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公开(公告)号：US11265986B2
公开(公告)日：2022-03-01
申请号：US17172953
申请日：2021-02-10
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Wei-Jen Lai , Neng-Chieh Hsu , Zhen-Guo Ding , Kang-Fan Yeh
IPC: G09G3/34 , G09G5/12 , H05B45/325
Abstract: An LED controller is used with a video source and at least one LED unit, and includes a control signal generator and a driver. The control signal generator performs pulse width modulation based on a first clock signal, a second clock signal and a data signal, which is generated by the video source, to generate at least one control signal. The first and second clock signals are independent of a vertical synchronization signal that is generated by the video source. The driver generates, based on the at least one control signal, at least one drive signal that is related to light emission of the at least one LED unit.
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公开(公告)号：US20210065613A1
公开(公告)日：2021-03-04
申请号：US16559595
申请日：2019-09-03
Applicant: NOVATEK Microelectronics Corp.
Inventor： I-Feng Chen , Zhen-Guo Ding
IPC: G09G3/32
Abstract: The invention discloses a control circuit for controlling a panel. The panel includes a plurality of light-emitting elements arranged as an array. Each row of light-emitting elements among the plurality of light-emitting elements are coupled to each other via one of a plurality of scan lines. The control circuit includes a current source, an emission switch, a plurality of scan switches and a level adjustment circuit. The current source is coupled to a column of light-emitting elements among the plurality of light-emitting elements. The emission switch is coupled to the current source and the column of light-emitting elements. Each of the plurality of scan switches is coupled to one of the column of light-emitting elements via one of the plurality of scan lines. The level adjustment circuit is coupled between the plurality of scan lines and the current source.
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Patent Agency Ranking
公开(公告)号：US11973425B2
公开(公告)日：2024-04-30
申请号：US17646478
申请日：2021-12-29
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-Ju Tsai , Ching-Jan Chen , Zhen-Guo Ding , Zhe-Hui Lin , Wei-Ling Chen
CPC classification number: H02M3/158 , H02M1/0025 , H02M3/157
Abstract: A power converter includes a power stage circuit, a ramp generator circuit, and a control circuit. The power stage circuit generates an output signal according to an input signal and a control signal. The ramp generator circuit generates a ramp signal according to the control signal, the input signal, and the output signal. The control circuit generates the control signal according to the output signal, a reference signal, and the ramp signal.
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公开(公告)号：US11043161B2
公开(公告)日：2021-06-22
申请号：US16559595
申请日：2019-09-03
Applicant: NOVATEK Microelectronics Corp.
Inventor： I-Feng Chen , Zhen-Guo Ding
IPC: G09G3/32
Abstract: The invention discloses a control circuit for controlling a panel. The panel includes a plurality of light-emitting elements arranged as an array. Each row of light-emitting elements among the plurality of light-emitting elements are coupled to each other via one of a plurality of scan lines. The control circuit includes a current source, an emission switch, a plurality of scan switches and a level adjustment circuit. The current source is coupled to a column of light-emitting elements among the plurality of light-emitting elements. The emission switch is coupled to the current source and the column of light-emitting elements. Each of the plurality of scan switches is coupled to one of the column of light-emitting elements via one of the plurality of scan lines. The level adjustment circuit is coupled between the plurality of scan lines and the current source.
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公开(公告)号：US10966296B1
公开(公告)日：2021-03-30
申请号：US16902472
申请日：2020-06-16
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Wei-Jen Lai , Neng-Chieh Hsu , Zhen-Guo Ding , Kang-Fan Yeh
IPC: G09G3/34 , G09G5/12 , H05B45/325
Abstract: An LED controller is used with a video source and at least one LED unit, and includes a control signal generator and a driver. The control signal generator performs pulse width modulation based on a first clock signal, a second clock signal and a data signal, which is generated by the video source, to generate at least one control signal. The first and second clock signals are independent of a vertical synchronization signal that is generated by the video source. The driver generates, based on the at least one control signal, at least one drive signal that is related to light emission of the at least one LED unit.
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公开(公告)号：US20150061635A1
公开(公告)日：2015-03-05
申请号：US14074680
申请日：2013-11-07
Applicant: Novatek Microelectronics Corp.
Inventor： Zhen-Guo Ding , Chun-Yu Hsieh
IPC: H02M3/04
CPC classification number: H02M3/158 , H02M3/07 , H02M3/1588 , Y02B70/1466
Abstract: A voltage converting integrated circuit includes a first switch, a second switch, a third switch, a fourth switch, and a control circuit. The first switch is coupled between a first voltage pin and a first switch pin. The second switch is coupled between a second voltage pin and a second switch pin. The third switch is coupled between the first switch pin and a third voltage pin. The fourth switch is coupled between the second switch pin and a reference ground. The first to the fourth switches are controlled by a control signal to be turned on or off. The control circuit is coupled to the first to the fourth switches for receiving a mode setting signal and the control circuit generates a control signal according to the mode setting signal.
Abstract translation: 电压转换集成电路包括第一开关，第二开关，第三开关，第四开关和控制电路。 第一开关耦合在第一电压引脚和第一开关引脚之间。 第二开关耦合在第二电压引脚和第二开关引脚之间。 第三开关耦合在第一开关引脚和第三电压引脚之间。 第四开关耦合在第二开关引脚和参考地之间。 第一至第四开关由控制信号控制以打开或关闭。 控制电路耦合到第一至第四开关，用于接收模式设置信号，并且控制电路根据模式设置信号产生控制信号。
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公开(公告)号：US20130342265A1
公开(公告)日：2013-12-26
申请号：US14010499
申请日：2013-08-26
Applicant: NOVATEK Microelectronics Corp.
Inventor： Hsiang-Yi Chiu , Zhen-Guo Ding
IPC: G05F1/10
Abstract: A charge pump device is disclosed. The charge pump device includes a driving stage, for generating a driving signal corresponding to a driving capability; a charge pump circuit, for generating an output voltage according to the driving signal; a comparing circuit, comprising a first comparator for comparing the output voltage and a first reference voltage to generate a first comparing result; an overload detection circuit, for generating a detection result according to at least one of the first comparing result and the output voltage; and a driving capability control circuit, coupled between the overload detection circuit and the driving stage for controlling the driving capability corresponding to the driving signal according to the detection result.
Abstract translation: 公开了电荷泵装置。 电荷泵装置包括用于产生与驱动能力对应的驱动信号的驱动级; 电荷泵电路，用于根据驱动信号产生输出电压; 比较电路，包括用于比较输出电压和第一参考电压以产生第一比较结果的第一比较器; 过载检测电路，用于根据第一比较结果和输出电压中的至少一个产生检测结果; 以及驱动能力控制电路，其耦合在过载检测电路和驱动级之间，用于根据检测结果控制与驱动信号相对应的驱动能力。
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