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公开(公告)号：US20190297345A1
公开(公告)日：2019-09-26
申请号：US15927113
申请日：2018-03-21
Applicant: Novatek Microelectronics Corp.
Inventor： Fan-Di Jou
IPC: H04N19/573 , H04N19/159 , H04N19/172 , H04N19/147
Abstract: A video encoding apparatus and method are provided. The video encoding apparatus includes a video encoding circuit and a control circuit. The video encoding circuit performs a video encoding operation on a video stream to produce an encoded stream. The control circuit controls the video coding circuit to perform the video encoding operation. The control circuit dynamically sets a current frame in the video stream to at least one of a long-term reference frame, a short-term reference frame, and a non-reference frame according to at least one of a playback latency control condition and an inter-frame correlation condition. The long-term reference frame and the short-term reference frame are used as the decoding reference frame in a video decoding operation.
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公开(公告)号：US20190294277A1
公开(公告)日：2019-09-26
申请号：US16439719
申请日：2019-06-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Min Huang
Abstract: A signal processing circuit for processing a sensing signal from a sensor includes an amplifier, an input capacitor group, a compensation capacitor group and first/second switch groups. The amplifier, coupled to a first floating node and a second floating node, is configured to amplify the sensing signal coupled from the first floating node and the second floating node. The first switch group is coupled between a first node group and the first and second floating nodes. The second switch group is coupled between a second node group and the first node group. The input capacitor group is coupled to the second node group and an input node group, and configured to receive the sensing signal coupled from the input node group. The compensation capacitor group is coupled between a compensation node group and the second node group, and configured to receive a compensation signal coupled from the compensation node group.
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公开(公告)号：US10418998B1
公开(公告)日：2019-09-17
申请号：US16121638
申请日：2018-09-05
Applicant: Novatek Microelectronics Corp.
Inventor： Yen-Cheng Cheng
IPC: H03K19/0185 , H03K3/356
Abstract: A level shifter circuit which includes a cross-coupled latch and a set-reset latch is introduced. The level shifter circuit includes a first input node, a second input node and a plurality of switches. The first input node and the second input node are configured to receive a first digital input signal and a second digital input signal, respectively. The plurality of switches are configured to be switched on or off according to at least one control signal to output a first output signal and a second output signal. The set-reset latch is coupled to the cross-coupled latch and includes a set input node, a reset input node and an output node. The set input node and the reset input node are configured to receive the first output signal and the second output signal of the cross-coupled latch, respectively. The output node outputs a level-shifted output signal according to the first output signal and the second output signal of the cross-coupled latch. A method adapted to a level shifter circuit is also introduced.
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公开(公告)号：US20190253029A1
公开(公告)日：2019-08-15
申请号：US16394037
申请日：2019-04-25
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： De-Shiou TSENG , Wei-Ta CHIU
CPC classification number: H03F3/45654 , G05F1/561 , H03F1/0222 , H03F1/025 , H03F3/3022 , H03F3/45179 , H03F3/45475 , H03F3/45708 , H03F3/45713 , H03F2200/511 , H03F2200/516 , H03K17/223 , H03K2217/0081
Abstract: A driver circuit includes a first operational amplifier circuit, a second operational amplifier circuit, and at least one power switching circuit is provided. The first operational amplifier circuit receives a first input signal and generates a first output signal according to the first input signal. The second operational amplifier circuit receives a second input signal and generates a second output signal according to the second input signal. The at least one power switching circuit is coupled to the first operational amplifier circuit and the second operational amplifier circuit, and configured to switch at least one power supply for both the first operational amplifier circuit and the second operational amplifier circuit.
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公开(公告)号：US20190237041A1
公开(公告)日：2019-08-01
申请号：US16245232
申请日：2019-01-10
Applicant: Novatek Microelectronics Corp.
Inventor： Syang-Yun Tzeng , Cheng-Kai Kuei , Chin-Hung Hsu
IPC: G09G5/00
CPC classification number: G09G5/008 , G09G5/005 , G09G2370/08
Abstract: A timing controller and an operation method thereof are provided. The timing controller includes a transmitter circuit and a control circuit. The control circuit ends a normal mode to enter a swing boost mode when a lock signal fed back by a source driving circuit indicates that quality of data signal is deteriorated in the normal mode. In the swing boost mode, the control circuit controls the transmitter circuit to boost the swing of the data signal from a normal level to a high level. The control circuit ends the swing boost mode and enters a clock training mode when the source driving circuit causes loss of lock to the data signal in the swing boost mode. In the clock training mode, the control circuit controls the transmitter circuit to employ a clock training data string as the data signal to transmit to the source driving circuit.
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Patent Agency Ranking
公开(公告)号：US20190236996A1
公开(公告)日：2019-08-01
申请号：US16261586
申请日：2019-01-30
Applicant: Novatek Microelectronics Corp.
Inventor： Hsi-Mao Yu , Chin-Hung Hsu
CPC classification number: G09G3/20 , G06F3/0412 , G09G2310/0264 , H05K9/0022
Abstract: An integrated circuit (IC), a display device and an anti-interference method thereof are provided. The IC includes an input pad, a source driving circuit and an anti-interference circuit. The input pad receives an input signal comprising image data from the external. The source driving circuit is coupled to the input pad to receive the input signal. The anti-interference circuit is coupled to the input pad to provide a variable capacitance. The anti-interference circuit adjusts the variable capacitance from a normal capacitance value to at least one anti-interference capacitance value when an interference event occurs to the input signal. The anti-interference circuit maintains the variable capacitance at the normal capacitance value when the interference event does not occur.
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公开(公告)号：US10367504B1
公开(公告)日：2019-07-30
申请号：US16116877
申请日：2018-08-29
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yen-Cheng Cheng
IPC: H03K19/00 , H03K19/0185
Abstract: A negative voltage level shifter includes a pair of input transistors, a pair of output transistors and a clamp circuit. The clamp circuit is coupled between the pair of input transistors and the pair of output transistors, for clamping source voltages of the pair of input transistors.
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公开(公告)号：US20190212873A1
公开(公告)日：2019-07-11
申请号：US16243105
申请日：2019-01-09
Applicant: NOVATEK Microelectronics Corp.
Inventor： Min Huang , Chi-Ting Chen
CPC classification number: G06F3/0418 , G06F3/044 , G06K9/0002
Abstract: A signal processing circuit for receiving a sensing signal from a sensor includes a capacitor group, an amplifier and a switch. The sensing signal consists of a common-mode part and a differential-mode part. The capacitor group, coupled to a node, includes an input capacitor for coupling the sensing signal to the node and a compensation capacitor for coupling a compensation signal to the node. The amplifier, coupled to the node, is configured to amplify the sensing signal coupled from the input capacitor. The switch is coupled between the node and the amplifier.
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公开(公告)号：US10311279B2
公开(公告)日：2019-06-04
申请号：US15299473
申请日：2016-10-21
Applicant: Novatek Microelectronics Corp.
Inventor： Ji-Ting Chen
Abstract: A fingerprint sensor device and an operation method thereof are provided. The fingerprint sensor device includes a driving electrode, a driving circuit, a fingerprint sensing plate, a reading circuit and a determination circuit. The driving circuit applies a driving signal to an object through the driving electrode. The fingerprint sensing plate has sensing electrodes configured to sense the object. The reading circuit reads the driving signal through the fingerprint sensing plate. During a period between a rising edge time point and its adjacent falling edge time point of the driving signal, the reading circuit respectively samples the driving signal in at least two different phases to obtain at least two sampling results and outputs a difference value of the at least two sampling results. The determination circuit checks the difference value to determine whether the object to be sensed is a real finger or a fake finger.
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公开(公告)号：US20190156754A1
公开(公告)日：2019-05-23
申请号：US16120468
申请日：2018-09-04
Applicant: Novatek Microelectronics Corp.
Inventor： Jhih-Siou Cheng , Tzong-Honge Shieh , Chieh-An Lin , Ju-Lin Huang
IPC: G09G3/3258 , G06F3/041 , G06F3/044
Abstract: A driver of a display panel is provided. The driver includes a plurality of sensing channels and a signal convertor. The plurality of sensing channels are configured to receive a plurality of sensing signals from the display panel via a plurality of sensing lines and output the sensing signals. The signal convertor are coupled to the sensing channels and configured to receive the sensing signals from the sensing channels. The signal convertor receives the sensing signals from the sensing channels in different sequences during different sensing periods.
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