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公开(公告)号：US20210048912A1
公开(公告)日：2021-02-18
申请号：US16992122
申请日：2020-08-13
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang
IPC: G06F3/041
Abstract: A signal processing apparatus includes a first signal processing circuit and the second signal processing circuit. The first signal processing circuit receives a first signal. The first signal processing circuit has a power end connecting to a first voltage and a reference ground end. The second signal processing circuit receives a second signal. The second signal processing circuit has a power end which is electrically coupled to the reference ground end of the first signal processing circuit or equals the reference ground end of the first signal processing circuit. The second signal processing circuit has a reference ground end connecting to a second voltage.
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公开(公告)号：US10756749B1
公开(公告)日：2020-08-25
申请号：US16746713
申请日：2020-01-17
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Yen-Cheng Cheng
Abstract: A DAC device includes a first DAC circuit and a second DAC circuit. The first DAC circuit includes multiple DAC portions, each of which includes multiple pMOSFETs. The second DAC circuit includes multiple DAC portions, each of which includes multiple nMOSFETs. For each of the first and second DAC circuits, bulk terminals of at least some of the MOSFETs of each DAC portion are for receiving a respective one of bulk voltages with different magnitudes, a gate terminal of each of the MOSFETs of the DAC portions is for receiving a gate signal, and voltage magnitudes of at least some of the gate signals received by each DAC portion switch between a respective one of different logic high levels and a respective one of different logic low levels.
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公开(公告)号：US10673421B1
公开(公告)日：2020-06-02
申请号：US16658176
申请日：2019-10-21
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng
IPC: H03K3/356 , H03K3/037 , H03K19/0185
Abstract: A level shifter device and an operation method thereof are provided. The level shifter device includes a buffer, a first level shifter and a dynamic voltage regulation circuit. The buffer includes an output terminal. The first level shifter has a first input terminal coupled to the output terminal of the buffer. The first level shifter has a reference voltage terminal coupled to an analog reference voltage. The dynamic voltage regulation circuit generates a dynamic voltage having a level varied according to a bounce of the analog reference voltage, and provides the dynamic voltage to at least one of the buffer as a power supply and the first level shifter as a bias voltage.
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公开(公告)号：US11551600B2
公开(公告)日：2023-01-10
申请号：US17149693
申请日：2021-01-14
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang
IPC: G09G3/20
Abstract: A display panel is provided. The display panel includes a pixel array, multiple data lines and first scan lines. The pixel array is arranged in multiple pixel rows by multiple pixel columns, and includes a first pixel row, a second pixel row, and a third pixel row which are adjacent pixel rows. The first scan line is coupled to multiple first pixel groups. Each first pixel group includes multiple first pixels in the first pixel row and multiple second pixels in the second pixel row adjacent to the first pixel row. A display driving circuit for driving a display panel is also provided.
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公开(公告)号：US11494024B2
公开(公告)日：2022-11-08
申请号：US16992122
申请日：2020-08-13
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang
Abstract: A signal processing apparatus includes a first signal processing circuit and the second signal processing circuit. The first signal processing circuit receives a first signal. The first signal processing circuit has a power end connecting to a first voltage and a reference ground end. The second signal processing circuit receives a second signal. The second signal processing circuit has a power end which is electrically coupled to the reference ground end of the first signal processing circuit or equals the reference ground end of the first signal processing circuit. The second signal processing circuit has a reference ground end connecting to a second voltage.
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Patent Agency Ranking
公开(公告)号：US20220334701A1
公开(公告)日：2022-10-20
申请号：US17693403
申请日：2022-03-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Shih-Chan Huang
IPC: G06F3/041 , G06F3/044 , G06F3/038 , G06F3/0354 , H04W72/04
Abstract: A detection method for a touch device includes transmitting a first uplink signal conforming to a first protocol of a first active stylus and transmitting a second uplink signal conforming to a second protocol of a second active stylus. A chronological sequence of the first uplink signal and the second uplink signal is based at least in part on whether the first active stylus or the second active stylus has just left a detection range of the touch device.
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公开(公告)号：US11231768B1
公开(公告)日：2022-01-25
申请号：US17008578
申请日：2020-08-31
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang , Wei-Kang Tsai
IPC: G06F3/041 , G06F1/3234 , G06F3/0354
Abstract: The present invention provides a method of a controller, for controlling a plurality of drivers, each coupled to a panel having a plurality of areas and configured to control at least one of the areas of the panel. The method includes steps of: controlling each of the drivers to perform finger touch detection in a first finger detection mode and perform stylus detection in a first stylus detection mode; when a finger touch is detected on a first area in the first finger detection mode, controlling a first driver corresponding to the first area to perform finger touch detection in a second finger detection mode on the first area; and when a stylus is detected on a second area in the first stylus detection mode, controlling a second driver corresponding to the second area to perform stylus detection in a second stylus detection mode on the second area.
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公开(公告)号：US11158234B2
公开(公告)日：2021-10-26
申请号：US16517674
申请日：2019-07-22
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang
IPC: G09G3/20
Abstract: A channel circuit of a source driver, including a first digital-to-analog converter (DAC), a second DAC, a first switch, a second switch and an output buffer circuit, is provided. The output terminal of the output buffer circuit is configured to be coupled to a data line of a display panel. An output terminal of the first DAC is coupled to a first input terminal among the input terminals of the output buffer circuit. An output terminal of the second DAC is coupled to a second input terminal among the input terminals of the output buffer circuit. The first switch is disposed along a first signal path between the output terminal of the first DAC and the output terminal of the output buffer circuit. The second switch is disposed along a second signal path between the output terminal of the second DAC and the output terminal of the output buffer circuit.
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公开(公告)号：US11150760B2
公开(公告)日：2021-10-19
申请号：US16992140
申请日：2020-08-13
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng
Abstract: A touch analog front-end circuit includes a current conveyor and an accumulator. The current conveyor receives a first voltage as an operation voltage, and generates a current signal according to a touch sensing signal received from a touch display panel. The accumulator is coupled to the current conveyor, receives a second voltage as an operation voltage, and generates an accumulating result according to the current signal and a reference voltage. The first voltage is higher than the second voltage.
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公开(公告)号：US20210225248A1
公开(公告)日：2021-07-22
申请号：US17149693
申请日：2021-01-14
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng , Hsiu-Hui Yang
IPC: G09G3/20
Abstract: A display panel is provided. The display panel includes a pixel array, multiple data lines and first scan lines. The pixel array is arranged in multiple pixel rows by multiple pixel columns, and includes a first pixel row, a second pixel row, and a third pixel row which are adjacent pixel rows. The first scan line is coupled to multiple first pixel groups. Each first pixel group includes multiple first pixels in the first pixel row and multiple second pixels in the second pixel row adjacent to the first pixel row. A display driving circuit for driving a display panel is also provided.
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