公开(公告)号：US11469744B1

公开(公告)日：2022-10-11

申请号：US17493006

申请日：2021-10-04

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Hsiang-Yi Chiu

IPC: H03L5/00 ,  H03K3/037 ,  H03K19/0185 ,  H03K19/0948 ,  H03K3/356

Abstract: A level shifter includes a pre-level shifter and a selector. The selector is coupled to the pre-level shifter. The pre-level shifter shifts an input digital voltage to a first digital voltage and a second digital voltage. The levels of the first digital voltage and the second digital voltage transition sequentially in time when the level of the input digital voltage transitions from one logic to the other. The selector selects and outputs the first digital voltage whose level transitions earlier in time compared to the transition of the level of the second digital voltage.

公开(公告)号：US11450132B2

公开(公告)日：2022-09-20

申请号：US17216705

申请日：2021-03-30

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Wu Wei Lin ,  Ting-Hsuan Hung ,  Wen-Yi Hsieh

IPC: G06V40/13 ,  G06F3/041

Abstract: In the invention, a fingerprint driving circuit, a fingerprint sensing device, an electronic apparatus, and an operation method of the fingerprint sensing device are provided. By keeping fingerprint sensing lines in a non-fingerprint sensing region in an electrically non-floating state, flash phenomenon in a display panel may be avoided.

公开(公告)号：US11444615B2

公开(公告)日：2022-09-13

申请号：US17163559

申请日：2021-02-01

Applicant: Novatek Microelectronics Corp.

Inventor： Liang-Ting Kuo ,  Chih-Yuan Kung ,  Kuan-Ting Lin ,  Chu-Wei Hsia

IPC: H03K17/0812 ,  H04L25/02

Abstract: A termination circuit, including a termination resistor, a first switch circuit, a second switch circuit, and a control circuit, is provided. A first end of the termination resistor is coupled to a signal pad. A first end of the first switch circuit is coupled to a second end of the termination resistor. A first end of the second switch circuit is coupled to a second end of the first switch circuit. A second end of the second switch circuit is coupled to a reference voltage line. During a period when the second switch circuit is turned on, the control circuit turns on the first switch circuit with a bias voltage. During a period when the second switch circuit is turned off, the control circuit turns off the first switch circuit with a voltage of the first end of the first switch circuit.

公开(公告)号：US20220270223A1

公开(公告)日：2022-08-25

申请号：US17180663

申请日：2021-02-19

Applicant: Novatek Microelectronics Corp.

Inventor： Chieh-Cheng Chen ,  Po-Wei Chen

IPC: G06T5/50 ,  G06T5/00 ,  G06T3/40 ,  G06T7/13

Abstract: The disclosure provides an image processing device. An image processing device includes a neural network circuit, a gain control circuit, and an image merge circuit. The neural network circuit is configured to receive an input image, and perform an image processing operation on the input image according to fixed parameters to output a first intermediate image. The gain control circuit, coupled to the neural network circuit, is configured to receive the first intermediate image from the neural network circuit, and multiply the first intermediate image by at least one amplitude gain to output a second intermediate image. The image merge circuit, coupled to the gain control circuit, configured to receive the second intermediate image and the input image, and combine the second intermediate image and the input image to obtain an output image. In addition, a method for image enhancement is also provided.

公开(公告)号：US11423688B2

公开(公告)日：2022-08-23

申请号：US17133658

申请日：2020-12-24

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yuan-Heng Lu ,  Tsung-Chan Lee

IPC: G06V40/13 ,  G02F1/1333

Abstract: A fingerprint sensing module is used for a liquid crystal display (LCD) panel having a sensing area. The fingerprint sensing module includes a light source and a shielding frame. The light source is configured to provide light emission for fingerprint sensing performed on the sensing area, wherein the sensing area is at a first side of the light source. The shielding frame is disposed on a light emission path from the light source toward the first side.

公开(公告)号：US11410594B1

公开(公告)日：2022-08-09

申请号：US17325215

申请日：2021-05-20

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chun-Hung Chen ,  Chia-Hsin Tung ,  Hsin-Hung Ou ,  Hung-Yi Lin

IPC: G09G3/20

Abstract: A method of dynamic bias control of a source driver bases on data wing level for power-saving. In order to cover the operating conditions of various loads under normal operations, the output buffer circuit operation is biased. The method utilizes the display gray scale difference between a previous data line and an immediately subsequent data line to determine the bias current to be used for the output buffer. When the difference between the current data line display gray scale and the previous data line display gray scale is not large, the bias current of the output buffer can be reduced. When the difference between the current data line display gray scale and the previous data line display gray scale is large, the bias current of the output buffer is increased and the current of the output buffer is adjusted according to different load conditions to save power.

公开(公告)号：US20220246077A1

公开(公告)日：2022-08-04

申请号：US17727837

申请日：2022-04-25

Applicant: Novatek Microelectronics Corp.

Inventor： Hsiu-Hui Yang ,  Yu-Shao Liu

IPC: G09G3/20

Abstract: A layout arrangement of a driver integrated circuit includes multiple output pads, a plurality of switching circuits, and multiple data channel circuits. The output pads include a first output pad and a second output pad and are configurable to be coupled to a plurality of data lines. The switching circuits include a first switching circuit. A first selection terminal of the first switching circuit is coupled to the first output pad via a first connecting wire. A second selection terminal of the first switching circuit is coupled to the second output pad via a second connecting wire. The data channel circuits include a first data channel circuit. An output terminal of the first data channel circuit is coupled to a common terminal of the first switching circuit via a third connecting wire. The third connecting wire is longer than the first connecting wire and the second connecting wire.

公开(公告)号：US20220236938A1

公开(公告)日：2022-07-28

申请号：US17158028

申请日：2021-01-26

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Tang Yang ,  Yung-Chieh Sun

IPC: G06F3/147

Abstract: The present invention provides a method of transmitting parameters for controlling a display screen of a screen control system. The method is used in a first serial unit of the screen control system, and includes steps of: receiving a first parameter; performing parameter setting on the first serial unit according to the first parameter; calculating a second parameter according to the first parameter, wherein the second parameter is different from the first parameter; and transmitting the second parameter to a second serial unit of the screen control system.

公开(公告)号：US11372501B1

公开(公告)日：2022-06-28

申请号：US17315370

申请日：2021-05-10

Applicant: NOVATEK Microelectronics Corp.

Inventor： Min Huang

IPC: G06F3/041

Abstract: A control method for fingerprint sensing includes following steps. First fingerprint brightness codes detected in reference with a ramp-counting variable varying in a full range are received during a pre-scanning phase. An initial code is generated according to a distribution of the first fingerprint brightness codes. The initial code is applied to the ramp-counting variable during a normal scanning phase for detecting second fingerprint brightness codes in reference with the ramp-counting variable varying in a partial range. A boundary of the partial range is determined according to the initial code. A control circuit is also disclosure.

公开(公告)号：US20220171494A1

公开(公告)日：2022-06-02

申请号：US17241091

申请日：2021-04-27

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Wu-Wei Lin ,  Jiun-Jie Tsai ,  Huang-Chin Tang ,  Ching-Chun Lin

IPC: G06F3/041 ,  G06V40/13 ,  G09G5/10

Abstract: An integrated driving device is provided. The integrated driving device includes a touch sensing circuit and an optical sensing circuit. The touch sensing circuit is configured to perform touch sensing in a plurality of touch sensing periods during a first frame period. The optical sensing circuit is configured to perform optical sensing during at least one optical sensing period during the first frame period to obtain optical sensing signals for generating first ambient light information. The touch sensing periods and the optical sensing period are non-overlapping. Correspondingly, an operation method of an integrated driving device is also provided.