Patents Assigned to Pixelworks Semiconductor Technology (Shanghai) Co., Ltd.
  • Patent number: 11941744
    Abstract: Various methods are provided for generating motion vectors in the context of 3D computer-generated images. An example method includes generating, for each pixel of one or more objects to be rendered in a current frame, a 1-phase motion vector (MV1) and a 0-phase motion vector (MV0), each MV1 and MV0 having an associated depth value, to thereby form an MV1 texture and an MV0 texture; converting the MV1 texture to a set of MV1 blocks and converting the MV0 texture to a set of MV0 blocks; and outputting the set of MV1 blocks and the set of MV0 blocks for image processing.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: March 26, 2024
    Assignee: PIXELWORKS SEMICONDUCTOR TECHNOLOGY (SHANGHAI) CO. LTD.
    Inventors: Hongmin Zhang, Miao Sima, Zongming Han, Gongxian Liu, Junhua Chen, Guohua Cheng, Baochen Liu, Neil Woodall, Yue Ma, Huili Han
  • Patent number: 11922611
    Abstract: Various methods and systems are provided for accelerated image rendering with motion compensation. In one embodiment, a method comprises calculating motion between a preceding image frame and a target image frame to be rendered, rendering a small image with a size smaller than a target size of the target image frame based on the calculated motion, and generating the target image frame at the target size based on the small image, the calculated motion, and a reference image frame. In this way, high-quality image frames for a video stream may be generated with a reduced amount of rendering for each frame, thereby reducing the overall processing resources dedicated to rendering as well as the power consumption for image rendering.
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: March 5, 2024
    Assignee: Pixelworks Semiconductor Technology (Shanghai) Co. Ltd.
    Inventors: Guohua Cheng, Junhua Chen, Neil Woodall, Hongmin Zhang, Yue Ma, Qinghai Wang
  • Patent number: 11810531
    Abstract: A method is provided for controlling display of an image on a display panel of a display device, the method comprising determining a commanded brightness level for the display panel, generating an index look-up table (LUT) and a mura LUT based on the brightness level and a relationship between pixel output and pixel value for each pixel of the display panel for each of a plurality of brightness levels, the relationship determined during a calibration phase and stored in memory of the display device, determining an index value for each pixel of the display panel based on the index LUT, determining a corrected pixel value for each pixel based on the mura LUT and the index value, and sending the corrected pixel value to that pixel within the display device.
    Type: Grant
    Filed: April 28, 2022
    Date of Patent: November 7, 2023
    Assignee: Pixelworks Semiconductor Technology (Shanghai) Co., Ltd.
    Inventors: Wenwen Yi, Haiyan Shi, Neil Woodall