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公开(公告)号：US20190139471A1
公开(公告)日：2019-05-09
申请号：US16242004
申请日：2019-01-08
Applicant: Novatek Microelectronics Corp.
Inventor： Chun-Chieh Lin , Shang-I Liu , Hua-Gang Chang
IPC: G09G3/00 , G09G3/3275 , G09G3/3266
CPC classification number: G09G3/006 , G09G3/3266 , G09G3/3275 , G09G3/3291 , G09G2300/0814 , G09G2310/0286 , G09G2320/041 , G09G2330/12
Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.
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公开(公告)号：US10283071B2
公开(公告)日：2019-05-07
申请号：US15891389
申请日：2018-02-08
Applicant: Novatek Microelectronics Corp.
Inventor： I-Te Liu , Chia-Wei Chang , Chien-Yu Chen , Hsien-Wen Lo
Abstract: An integrated circuit for driving a display panel is provided. The integrated circuit includes a gamma mapping circuit and a mura compensation circuit. The gamma mapping circuit is configured to receive a gray level of an image data, map the gray level to a gamma code according to at least one gamma table, and output the gamma code. The mura compensation circuit is configured to receive the gamma code, and compensate the gamma code according to at least one de-mura table to generate a compensation result after the gamma mapping circuit performs the step of mapping the gray level to the gamma code. The integrated circuit drives the display panel according to the compensation result. In addition, a method for driving a display panel is also provided.
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公开(公告)号：US20190130824A1
公开(公告)日：2019-05-02
申请号：US16000891
申请日：2018-06-06
Applicant: Novatek Microelectronics Corp.
Inventor： Tzu-Chien Tzeng , Po-Hsiang Fang
IPC: G09G3/3225
Abstract: The disclosure provides a sensing apparatus and an operation method thereof. The sensing apparatus includes a sensing circuit, an analog-to-digital converter (ADC) circuit, a disturbing circuit and an output circuit. The sensing circuit is configured to output a sensing signal indicating a sensing result of a sensing line of the display panel. The ADC circuit is coupled to the sensing circuit to receive the sensing signal and outputs sensing data related to the sensing signal. The disturbing circuit is coupled to the ADC circuit to receive the sensing data and generates a time-variant disturbance component to disturb the sensing data to generate disturbed data. The output circuit is coupled to the disturbing circuit to receive the disturbed data.
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公开(公告)号：US20190130187A1
公开(公告)日：2019-05-02
申请号：US15807600
申请日：2017-11-09
Applicant: Novatek Microelectronics Corp.
Inventor： Pengyuan Hu , Yongchao Li , Chun-Wei Chen , Chun Wang , Xin Huang
CPC classification number: G06K9/00718 , G06K9/4604 , G06K9/4642 , G06K9/6212 , G06T7/77 , G06T2207/10016 , G06T2207/20072 , H04N7/0127 , H04N7/013 , H04N7/014 , H04N7/0142
Abstract: An image processing method and an image processing apparatus that utilize scrolling text information and moving edge-pairs of an edge map to determine text regions in interpolated frame is introduced herein. Text blocks are detected according to the moving edges-pair of the edge map. Next, a first moving vector histogram and a second moving vector histogram are built according to the detected text blocks. An existence of scrolling text and motion vector of the scrolling text in the frames are determined according to the first and second moving vector histograms. A scrolling text region in at least one of the first frame and the second frame is determined in block line unit, and positions of each scrolling text pixels in an interpolated are determined according to the motion vector of the scrolling text and the scrolling text region in the at least one of the first frame and the second frame.
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公开(公告)号：US20190107916A1
公开(公告)日：2019-04-11
申请号：US15726404
申请日：2017-10-06
Applicant: NOVATEK Microelectronics Corp.
Inventor： Hung-Cheng Kuo , Yung-Fu Lin , Chun-Hung Chen , Ting-Hsuan Hung
CPC classification number: G06F3/0418 , G06F3/044
Abstract: A signal processing method for a touch panel includes transmitting a first driving signal to a first touch channel of the touch panel; and transmitting a second driving signal to a second touch channel of the touch panel, wherein the second touch channel is neighboring to the first touch channel. The first driving signal is substantially identical to the second driving signal during a first period, and the first driving signal is substantially inverse to the second driving signal during a second period neighboring to the first period.
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Patent Agency Ranking
公开(公告)号：US20190103840A1
公开(公告)日：2019-04-04
申请号：US15725263
申请日：2017-10-04
Applicant: NOVATEK Microelectronics Corp.
Inventor： Hsiang-Yi Chiu
Abstract: An amplifier circuit includes an input stage, having a positive input end and a negative a negative input end, for generating a pair of differential signals according to a first input voltage received from the positive input end and a second input voltage received from a negative input end; an output stage, coupled to the input stage for generating an output voltage at an output end according to the pair of differential signals; a feedback stage, coupled between the output end and the negative input end; and a clamping unit, coupled between the positive input end and the negative input end for adjusting the second input voltage when the first input voltage is varied so as to clamp a voltage difference between the first input voltage and second input voltage.
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公开(公告)号：US20190089759A1
公开(公告)日：2019-03-21
申请号：US16009205
申请日：2018-06-15
Applicant: Novatek Microelectronics Corp.
Inventor： Po-Chun Yeh , Chia-Chuan Cho , He-Shuen Kang , Jen-Wei Liang
IPC: H04L29/06 , H04N19/114 , H04N19/177 , H04N19/187
Abstract: The present disclosure provides a video encoding circuit and a wireless video transmission apparatus and method. The wireless video transmission apparatus includes a wireless transmitter circuit and a video encoding circuit. The wireless transmitter circuit is configured to transmit a video stream with a bit rate to a wireless transmission channel and provide a transmission state message according to a transmission state of the wireless transmission channel. The video encoding circuit is coupled to the wireless transmitter circuit to receive the transmission state message. The video encoding circuit is configured to perform an encoding operation on video data to generate the video stream to the wireless transmitter circuit and dynamically adjust the bit rate of the video stream delivered to the wireless transmitter circuit according to the transmission state message.
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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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229.发明申请公开(公告)号：US20180374427A1
公开(公告)日：2018-12-27
申请号：US15657203
申请日：2017-07-23
Applicant: NOVATEK Microelectronics Corp.
Inventor： Cheng-Kai Kuei , Chin-Hung Hsu
Abstract: A source driver of a display system includes a plurality of channels, and each of the plurality of channels includes a first latch, a second latch, an output driver and a comparator. The first latch receives a first data code and a second data code from a timing controller of the display system. The second latch receives the first data code from the first latch. The output driver is used for transmitting the first data code to a display panel of the display system. The comparator, coupled to the first latch, the second latch and the output driver, is used for comparing the first data code stored in the second latch with the second data code stored in the first latch, to generate a signal indicating a power level for the output driver to transmit the second data code.
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公开(公告)号：US10163191B2
公开(公告)日：2018-12-25
申请号：US14666327
申请日：2015-03-24
Applicant: NOVATEK Microelectronics Corp.
Inventor： Sheng-Tien Cho , Chien-Chou Hung
Abstract: A method for scaling up an image in a display device includes acquiring luminance data and color data of a plurality of pixels in the image; generating high frequency components according to the luminance data of a first pixel and a plurality of second pixels adjacent to the first pixel in each set of adjacent pixels among the plurality of pixels; adjusting the high frequency components corresponding to each set of adjacent pixels, for making a sum of the high frequency components corresponding to each set of adjacent pixels to be within a predetermined range; and transforming the luminance data of the first pixel, the high frequency components and duplicating the color data of the first pixel in each set of adjacent pixels, to generate image data of a plurality of scaling-up points between the first pixel and each of plurality of second pixels in each set of adjacent pixels.
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