Patents Assigned to Novatek Microelectronics Corp.
  • Patent number: 11006022
    Abstract: A video system includes a scene analyzing circuit, configured to perform a scene analysis operation on a video signal and output a scene analysis result; and a video processing module, comprising a first video processing circuit, configured to perform a first video operation on the video signal and output a first processing result; and a second video processing circuit, configured to perform a second video operation on the first processing result according to the scene analysis result.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 11, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chieh-Cheng Chen, Ting-Wei Chang
  • Patent number: 11005434
    Abstract: An output stage circuit of an operational amplifier, the operational amplifier, and a signal amplifying method applied to the operational amplifier are provided. The output stage circuit includes an inverting circuit and a compensation module. The inverting circuit is electrically connected to a gain stage circuit of the operational amplifier. The inverting circuit generates an output signal of the operational amplifier. The compensation module includes a first compensation circuit, including a first current providing path and a first suppression activation circuit. The first current providing path provides a first compensation current. The first suppression activation circuit conducts the first compensation current to the inverting circuit if a first compensation condition related to a first gain stage signal generated by the gain stage circuit is satisfied. Variation of the output signal is suppressed because of the first compensation current.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: May 11, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventor: De-Shiou Tseng
  • Patent number: 11004423
    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 and enter a swing boost mode when quality of data signal is detected to be deteriorated in the normal mode. In the swing boost mode, the control circuit boosts the swing of the data signal to be higher than a normal level of the data signal in the normal mode.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: May 11, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Syang-Yun Tzeng, Cheng-Kai Kuei, Chin-Hung Hsu
  • Patent number: 11004373
    Abstract: A source driver and an operating method thereof are provided. The source driver includes a high voltage circuit, a low voltage circuit and a sensing circuit. The low voltage circuit is coupled to the high voltage circuit. The high voltage circuit and low voltage circuit drive a display panel. The sensing circuit is coupled to the low voltage circuit. The sensing circuit senses the display panel during an analog-to-digital operating period. At least one of the high voltage circuit and the low voltage circuit is disabled during at least part of the analog-to-digital operating period.
    Type: Grant
    Filed: June 2, 2019
    Date of Patent: May 11, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Po-Hsiang Fang, Jhih-Siou Cheng, Ju-Lin Huang
  • Patent number: 11004389
    Abstract: A panel control device and an operation method thereof are provided. The panel control device includes a display port and a control circuit. The display port receives video data from a former stage device. The control circuit performs an anti-burn-in process on the video data according to a processing degree. After the former stage device issues a panel self-refresh entering command to the panel control device, the panel control device enters a panel self-refresh mode, and the control circuit increases the processing degree according to the panel self-refresh entering command, so as to perform the anti-burn-in process on the video data according to the increased processing degree.
    Type: Grant
    Filed: July 30, 2019
    Date of Patent: May 11, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventor: Hua-Gang Chang
  • Patent number: 11003282
    Abstract: A touch controller and a noise detection method that are capable of accurately detecting noises in a sensing signal are introduced. The touch controller may include a demodulator that is configured to receive a sensing signal and demodulate the sensing signal with a first frequency during a touch detection period. The demodulator may include a first filter that is configured to perform a noise detection operation on the sensing signal to output a first noise detection signal with a second frequency range adjacent to the first frequency. The first filter may have a plurality of peak frequencies different from the first frequency.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: May 11, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Ching Huang, Fang-Chun Lan
  • Patent number: 10999107
    Abstract: A voltage mode transmitter includes a first output terminal, a second output terminal, and a plurality switch-resistor units between the first output terminal and a first voltage source, between the second output terminal and the first voltage source, between the first output terminal and a second voltage source, and between the second output terminal and the second voltage source. Each switch-resistor unit includes a switch and a resistor connected in series. The switches of the switch-resistor units are controlled such that a common-mode voltage of a differential signal outputted at the first and second output terminals deviates from an average of voltages provided by the first and second voltage sources.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: May 4, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Shih-Chun Lin, Ming-Hung Chien, Shu-Chin Chuang
  • Patent number: 10999576
    Abstract: A video processing method includes: an i-th block of a target frame partitioned into a plurality of blocks is received; at least one of a spatial attribute parameter and a temporal attribute parameter of an i-th block of the target frame is determined; and at least one of a delta quantization parameter and a modified Lagrange multiplier is determined according to at least one of the spatial attribute parameter and the temporal attribute parameter, for encoding the i-th block of the target frame.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: May 4, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Xin Huang, Fan-Di Jou
  • Patent number: 10990219
    Abstract: An integrated circuit and a touch display apparatus are provided. The integrated circuit is configured to drive a touch display panel. The integrated circuit includes a regulator. An output terminal of the regulator is employed as a first node to output a common voltage, wherein the common voltage is configured to be provided to at least one common electrode of the touch display panel. An input terminal of the regulator is coupled to a second node different from the first node to receive a feedback voltage.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: April 27, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Huan-Teng Cheng, Wen-Yi Hsieh, Huang-Chin Tang
  • Patent number: 10991290
    Abstract: Control methods of a channel setting module applied to a display panel are provided. The display panel has gate lines, source lines, and pixels. The pixels are arranged in matrix. The pixels disposed at the same row are electrically connected to the same gate line, and the pixels disposed at the same column are electrically connected to the same source line. The adoption of the channel setting module reduces the control signals required by the source lines. The channel setting module includes operational amplifiers and de-mux switches, and the control methods dynamically determine conduction states of the de-mux switches. The voltage outputs of the operational amplifiers are selectively outputted to the source lines, depending on conduction statuses of the de-mux switches. By applying the control methods, the interference between the source lines are reduced, and the instantaneous overshoots/undershoots of floating channels are depressed.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: April 27, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Hsiu-Hui Yang, Yu-Shao Liu, Chin-Hung Hsu, Yen-Cheng Cheng
  • Patent number: 10992843
    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.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: April 27, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventor: Wen-Chi Lin
  • Patent number: 10990782
    Abstract: An operating method of an optical fingerprint capture apparatus includes: by the apparatus upon receipt of a scan command from a host, entering an exposure mode where an image sensor thereof is exposed to light carrying information of a fingerprint; by the apparatus upon complete exposure of the image sensor to the light, entering a sample mode where multiple pieces of pixel data that cooperatively represent an image of the fingerprint are obtained and written to a data buffer thereof; and by the apparatus at a predetermined output time point that is later than a start of the sample mode and earlier than an end of the sample mode, outputting an interrupt request to cause the host to start reading the pieces of pixel data from the data buffer.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: April 27, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chun-Yen Lin, Ping Liu, Chi-Ting Chen
  • Publication number: 20210118359
    Abstract: A LED driving apparatus with clock embedded cascaded LED drivers is introduced, including: a plurality of LED drivers, wherein the first stage LED driver receives an original data signal and outputs a first data signal, the Nth stage LED driver receives a (N?1)th data signal and outputs a Nth data signal. The Nth stage LED driver includes a clock data recovery circuit generating a recovery clock signal and a recovery data signal according to the (N?1)th data signal; and a first transmitter outputting the Nth data signal according to the recovery clock signal and the recovery data signal.
    Type: Application
    Filed: December 30, 2020
    Publication date: April 22, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Che-Wei Yeh, Keko-Chun Liang, Yu-Hsiang Wang, Yong-Ren Fang, Yi-Chuan Liu
  • Publication number: 20210118105
    Abstract: A method and an image processing device for image color enhancement are proposed. The method includes the following steps. An input image having input pixels is received, where each of the input pixels includes a luminance component and two chrominance components. A saturation gain of each of the input pixels is determined according to the chrominance components thereof. The chrominance components of each of the input pixels are adjusted according to the saturation gain thereof so as to generate enhanced pixels. An enhanced image is outputted according to the enhanced pixels.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 22, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Lei Zhang, Yongchao Li, JianHua Liang
  • Patent number: 10984697
    Abstract: This disclosure relates to techniques for a driving apparatus including a reordering circuit and a source driving circuit. The reordering circuit can be configured to reorder a plurality of sub-pixel data of an input data string to generate a reordered data string so as to reduce a color switching number associated with a target data line. The source driving circuit can be coupled to the reordering circuit to receive the reordered data string. The source driving circuit can be configured to drive the target data line of a display panel according to the reordered data string.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: April 20, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Tso-Hua Chien, Hung-Hsiang Chen, Huang-Chin Tang
  • Patent number: 10984733
    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.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: April 20, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chung-Wen Wu, Wen-Chi Lin, Jiun-Yi Lin
  • Patent number: 10984216
    Abstract: An optical fingerprint recognition system is disclosed. The optical fingerprint recognition system comprises a processing circuit; and an image sensor comprising a pixel array; wherein in an enrollment operation, the processing circuit is configured to set a first exposure time and control the image sensor to capture a first fingerprint image according to the first exposure time and in a matching operation, the processing circuit is configured to set a second exposure time and control the image sensor to capture a second fingerprint image for the matching operation according to the second exposure time; wherein the first exposure time is longer than the second exposure time.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: April 20, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Chi-Ting Chen
  • Publication number: 20210109634
    Abstract: A touch driving device and a touch movement track identification method are provided. The touch driving device includes a touch sensing circuit and a touch control circuit. The touch sensing circuit receives touch sensing signals from a touch sensor array when a touch display screen is operated in a display power saving mode, and generates digital touch sensing data according to the touch sensing signals. The touch control circuit periodically generates touch coordinates according to the digital touch sensing data, identifies whether an input symbol corresponding to a touch movement track formed by the touch coordinates generated consecutively matches a preconfigured symbol, and outputs a matching result to a core processing unit of the electronic device. The touch coordinates are generated when the orientation of the input symbol drawn on the touch display screen is not the same as a screen orientation of the touch display screen.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 15, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Li-Hsin Chen, Chin-Lin Lee, Hsiang-Cheng Yu
  • Publication number: 20210110131
    Abstract: A fingerprint recognition apparatus including a frontplane, a backplane and a display medium layer is provided. The frontplane includes an upper substrate, a black matrix layer and a color filter layer. The black matrix layer is disposed on the upper substrate, and the color filter layer is disposed on the black matrix layer. The black matrix layer includes a plurality of pixel apertures and a plurality of first apertures. The backplane includes a lower substrate and a sensor layer. The sensor layer includes a plurality of photo sensing elements. The photo sensing elements are configured to receive reflected lights from an object through the first apertures of the black matrix layer. Areas of the photo sensing elements are overlapped with the first apertures in a longitudinal direction. The display medium layer is disposed between the frontplane and the backplane.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 15, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Wu-Wei Lin, Cheng-Hsun Chan
  • Patent number: 10977470
    Abstract: A touch-panel control apparatus and an operation method thereof are provided. The touch-panel control apparatus includes a fingerprint sensing circuit, a touch detection circuit, and an application processor. The fingerprint sensing circuit is coupled to a touch panel to sense a fingerprint of an object. The touch detection circuit is coupled to the touch panel to detect a touch behavior of the object on the touch panel. The application processor is coupled to the fingerprint sensing circuit and the touch detection circuit. The application processor is configured to enter an encryption mode to sense the fingerprint via the fingerprint sensing circuit. The application processor detects the touch behavior via the touch detection circuit in the encryption mode. When the touch behavior changes in the encryption mode, the application processor ends the encryption mode early.
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: April 13, 2021
    Assignee: Novatek Microelectronics Corp.
    Inventor: Tsen-Wei Chang