公开(公告)号：US20200251033A1

公开(公告)日：2020-08-06

申请号：US16262934

申请日：2019-01-31

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Jhe Ma ,  Yung-Cheng Tsai ,  Feng-Ting Pai

IPC: G09G3/20

Abstract: A display apparatus and a brightness uniformity compensation method are introduced. The display apparatus includes a display panel, a content analysis circuit, a compensation table generator and a pixel compensation circuit. The content analysis circuit receives display data for a pixel of the display panel and analyzes a display load of the display data to generate a data compensation value. The compensation table generator generates a compensation table that includes the data compensation value corresponding to the display data of each pixel of the display panel. The pixel compensation circuit compensates the display data with the corresponding data compensation value included in the compensation table to generate compensated display data, wherein the compensated display data are displayed on the display panel of the display apparatus.

公开(公告)号：US20200243041A1

公开(公告)日：2020-07-30

申请号：US16845068

申请日：2020-04-10

Applicant: Novatek Microelectronics Corp.

Inventor： Syang-Yun Tzeng ,  Cheng-Kai Kuei ,  Chin-Hung Hsu

IPC: G09G5/00

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.

公开(公告)号：US10725486B2

公开(公告)日：2020-07-28

申请号：US16052654

申请日：2018-08-02

Applicant: Novatek Microelectronics Corp.

Inventor： Yong-Ren Fang ,  Shen-Iuan Liu ,  Ju-Lin Huang ,  Tzu-Chien Tzeng ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Che-Wei Yeh

IPC: G05F1/46 ,  H03K5/24 ,  G01R19/165

Abstract: A reference voltage generator includes a detecting voltage provider, a comparator, and a core circuit. The detecting voltage provider provides a detecting voltage with a first voltage level corresponding to a voltage coefficient. The comparator compares the first voltage level of the detecting voltage with a plurality of sampled amplitudes of an input signal to respectively generate a plurality of comparison results. The core circuit is used to: collect a plurality of first comparison results associated with a current received bit of a preset value from the comparison results; take the voltage coefficient as a first boundary voltage coefficient in response to the first comparison results satisfying a first condition; take the voltage coefficient as a second boundary voltage coefficient in response to the first comparison results satisfying a second condition. The reference circuit generates a reference voltage according to the first and second boundary voltage coefficients.

公开(公告)号：US20200211163A1

公开(公告)日：2020-07-02

申请号：US16234566

申请日：2018-12-28

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Yi Chien

IPC: G06T5/00 ,  G09G5/02

Abstract: The invention provides an image compensation method suitable to a display. First, an image processing circuit obtains pixel data related to a current pixel, a first and a second adjacent pixels from an image frame. The first and the second adjacent pixels are respectively located at two opposite sides of the current pixel. Then, the image processing circuit determines whether a color block edge exists between the current pixel, the first adjacent pixel and the second adjacent pixel according to the pixel data related to the current pixel, the first adjacent pixel and the second adjacent pixel. The image processing circuit performs first color edge compensation on the pixel data related to the current pixel when determining that the color block edge exists between the current pixel and the first adjacent pixel and no color block edge exists between the current pixel and the second adjacent pixel. An image processing circuit is further provided.

公开(公告)号：US20200184870A1

公开(公告)日：2020-06-11

申请号：US16445227

申请日：2019-06-19

Applicant: Novatek Microelectronics Corp.

Inventor： Po-Hsiang Fang ,  Jhih-Siou Cheng ,  Wen-Ching Huang

IPC: G09G3/20

Abstract: A source driver is provided. The source driver includes an integrated circuit chip, a sensitive circuit and at least one bump. The sensitive circuit is disposed in the integrated circuit chip. The sensitive circuit includes at least one capacitor. The at least one bump is disposed in the integrated circuit chip, and the at least one bump is adjacent to the sensitive circuit.

公开(公告)号：US10656751B2

公开(公告)日：2020-05-19

申请号：US15975810

申请日：2018-05-10

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Feng-Lin Chan ,  Hung-Kai Chen ,  Yuan-Fu Hsueh ,  Chun-Yuan Pai

IPC: G06F3/041 ,  G06F3/044

Abstract: The driving apparatus for driving a touch display panel includes a first voltage generating circuit configured to generate a common reference voltage, a second voltage generating circuit configured to generate a touch driving signal, and a control circuit configured to generate a switching signal. The switching signal is at the first voltage level during display periods for providing the common reference voltage to the touch display panel. The switching signal is at the second voltage level during touch periods for providing the touch driving signal to the touch display panel. A first touch display period includes a first display period a first touch period adjacent to the first display period. A second touch display period includes a second display period and a second touch period adjacent to the second display period. The first touch display period and the second touch display period are different in time length.

公开(公告)号：US20200152115A1

公开(公告)日：2020-05-14

申请号：US16183746

申请日：2018-11-08

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chao-Kai Tu ,  Yueh-Hsun Tsai ,  Tzung-Yun Tsai ,  Kai-Yue Lin ,  Ying-Hsiang Wang

IPC: G09G3/20

Abstract: A source driver for a panel includes a plurality of driver cells. Each of the driver cells includes an output driver, a plurality of bias voltage generators and a selector. The output driver is configured to output a plurality of display data to the panel. The plurality of bias voltage generators is coupled to the output driver. Each of the bias voltage generators is configured to provide at least one bias voltage for the output driver. The selector, coupled to the output driver, is configured to select the bias voltage from one of the bias voltage generators to be provided for the output driver according to the plurality of display data.

公开(公告)号：US20200152104A1

公开(公告)日：2020-05-14

申请号：US16745315

申请日：2020-01-16

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Shang-I Liu ,  Hua-Gang Chang

IPC: G09G3/00 ,  G09G3/3266 ,  G09G3/3275

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.

公开(公告)号：US10595043B2

公开(公告)日：2020-03-17

申请号：US13655430

申请日：2012-10-18

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Wei Chang

IPC: H04N13/00 ,  H04N19/597

Abstract: An encoding method and an encoding device for 3D video are provided. The method includes the following. Pixel data of a first macro block in a first frame to be encoded is loaded, wherein the first frame belongs to a first view angle. Pixel data of a search window in a reference frame is loaded. A first motion estimation is executed according to the pixel data of the search window and the first macro block. Pixel data of a second macro block in a second frame to be encoded is loaded, wherein the second frame belongs to a second view angle different from the first view angle. A second motion estimation is executed according to the pixel data of the search window and the second macro block, thereby sharing the pixel data of the search window with the first motion estimation. Accordingly, the demand for a memory bandwidth is decreased.

公开(公告)号：US20200065544A1

公开(公告)日：2020-02-27

申请号：US16105977

申请日：2018-08-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen Chung ,  Chi-Ting Chen

IPC: G06K9/00

Abstract: A fingerprint sensing method and a fingerprint sensing device are provided. The fingerprint sensing method includes the following steps. A first supply voltage is provided to power a fingerprint sensing circuit of the fingerprint sensing circuit. When the fingerprint sensing circuit is powered by the first supply voltage, it is detected whether a finger touch occurs. In response to determining that the finger touch has occurred, a second supply voltage is provided to power the fingerprint sensing device. A fingerprint image sensing is performed to obtain a fingerprint image when the fingerprint sensing circuit is powered by the second supply voltage.