公开(公告)号：US20180213228A1

公开(公告)日：2018-07-26

申请号：US15432938

申请日：2017-02-15

Applicant: Novatek Microelectronics Corp.

Inventor： Xiaoming Bu ,  Jian-Wen Chen ,  Po-Chin Hu

IPC: H04N19/124 ,  H04N11/04 ,  H04N19/513 ,  H04N19/132 ,  H04N19/174 ,  H04N19/164 ,  H04N19/182

CPC classification number: H04N19/124 ,  H04N11/046 ,  H04N19/15 ,  H04N19/182

Abstract: The disclosure proposes a method of fixed-rate line-based embedded video compression and an image processing apparatus using the same method. The method includes at least the following steps. A current encoding frame is received. Pixels in a current encoding frame are grouped on a line-by-line basis, and the grouped pixels are packed into pixel segments. Complexity information of a current pixel segment is calculated according to the pixels therein and neighboring pixels thereof. The current pixel segment is respectively encoded in a differential pulse-coding modulation (DPCM) mode and a truncation mode to generate a DPCM bitstream and a truncated bitstream according to a quantization parameter (QP). Either the DPCM bitstream or the truncated bitstream is selected and outputted according to the complexity information. An amount of bits used by the current pixel segment is feedback to calculate a new QP corresponding to a next pixel segment to be processed.

公开(公告)号：US20200285053A1

公开(公告)日：2020-09-10

申请号：US16294926

申请日：2019-03-07

Applicant: Novatek Microelectronics Corp.

Inventor： Xianbo Tan ,  Xiaoming Bu ,  YuanJia Du

IPC: G02B27/01 ,  H04N19/513 ,  H04N19/59 ,  G02B27/00

Abstract: A method and a system for video frame processing are proposed. The method is applicable to a system including a computing device and a head-mounted display having a motion sensor, a processor, and a display. The method includes the following steps. A sequence of rendered video frames including a first frame and a second frame subsequent to the first frame is received by the processor from the computing device. A first head movement of the head-mounted display is obtained from the motion sensor by the processor, where the first head movement is associated with the first frame. An interpolated frame is rendered according to the first frame, the second frame, and the first head movement and displayed subsequent to the first frame and prior to the second frame on the display by the processor.

公开(公告)号：US11367387B1

公开(公告)日：2022-06-21

申请号：US17117125

申请日：2020-12-10

Applicant: Novatek Microelectronics Corp.

Inventor： Wenhui Yu ,  Xiaoming Bu ,  Chih-Yuan Yang

IPC: G09G3/3208

Abstract: A method and an image processing device for mura detection on a display are proposed. The method includes the following steps. A compressed DeMura table corresponding to the display panel is obtained. Decompression is performed on the compressed DeMura table to generate a decompressed DeMura table. Upsampling is performed on the decompressed DeMura table to generate a reconstructed DeMura table. Mura compensation is performed on the display panel based on the reconstructed DeMura table.

公开(公告)号：US20220189387A1

公开(公告)日：2022-06-16

申请号：US17117125

申请日：2020-12-10

Applicant: Novatek Microelectronics Corp.

Inventor： Wenhui Yu ,  Xiaoming Bu ,  Chih-Yuan Yang

IPC: G09G3/3208

Abstract: A method and an image processing device for mura detection on a display are proposed. The method includes the following steps. A compressed DeMura table corresponding to the display panel is obtained. Decompression is performed on the compressed DeMura table to generate a decompressed DeMura table. Upsampling is performed on the decompressed DeMura table to generate a reconstructed DeMura table. Mura compensation is performed on the display panel based on the reconstructed DeMura table.

公开(公告)号：US10890764B2

公开(公告)日：2021-01-12

申请号：US16294926

申请日：2019-03-07

Applicant: Novatek Microelectronics Corp.

Inventor： Xianbo Tan ,  Xiaoming Bu ,  YuanJia Du

IPC: G02B27/01 ,  H04N19/513 ,  G02B27/00 ,  H04N19/59

Abstract: A method and a system for video frame processing are proposed. The method is applicable to a system including a computing device and a head-mounted display having a motion sensor, a processor, and a display. The method includes the following steps. A sequence of rendered video frames including a first frame and a second frame subsequent to the first frame is received by the processor from the computing device. A first head movement of the head-mounted display is obtained from the motion sensor by the processor, where the first head movement is associated with the first frame. An interpolated frame is rendered according to the first frame, the second frame, and the first head movement and displayed subsequent to the first frame and prior to the second frame on the display by the processor.