公开(公告)号：US20230029431A1

公开(公告)日：2023-01-26

申请号：US17758214

申请日：2020-01-31

Applicant: QUALCOMM Incorporated

Inventor： Yongjun XU ,  Menghao JIA ,  Nan ZHANG ,  Zhizhou CHEN ,  Xinchao YANG ,  Daiou ZENG ,  Zhibing ZHOU

IPC: G09G5/10 ,  G06V40/13

Abstract: Method and apparatus for selecting a gamma curve used by a display driver circuit for converting code words provided by a display processing unit to brightness levels based on an operating mode of the computing device. For example, the display processing unit provides code words to the display driver circuit for driving output at a display. Further, the display driver circuit converts the provided code words to analog signal for driving output at the display based on the selected gamma curve.

公开(公告)号：US20240403257A1

公开(公告)日：2024-12-05

申请号：US18697792

申请日：2021-12-15

Applicant: QUALCOMM Incorporated

Inventor： Nan ZHANG ,  Zhibing ZHOU ,  Yongjun XU

IPC: G06F13/42 ,  G06F13/40

Abstract: A method for changing operating frequency in a serial data link includes transmitting first datagrams over the serial data link using a first physical layer interface configured for a first frequency of operation, configuring a second physical layer interface for a second frequency of operation different from the first frequency of operation while the first datagrams are transmitted over the serial data link, transmitting configuration information over the serial data link using the first physical layer interface after the second physical layer interface has been configured for the second frequency of operation, idling the serial data link by terminating transmissions by the first physical layer interface, decoupling the first physical layer interface from the serial data link, coupling the second physical layer interface to the serial data link, and transmitting second datagrams over the serial data link using the second physical layer interface and the second frequency of operation.

公开(公告)号：US20230074876A1

公开(公告)日：2023-03-09

申请号：US17800120

申请日：2020-02-21

Applicant: QUALCOMM Incorporated

Inventor： Yongjun XU ,  Menghao JIA ,  Nan ZHANG ,  Zhibing ZHOU

IPC: G06F1/12 ,  G06F1/06

Abstract: This disclosure provides systems, devices, apparatus and methods, including computer programs encoded on storage media, for delaying a DSI clock change until there is no new frame update, so that a smoother user interface may be perceived. With more specificity, an apparatus may receive a request to change a speed of a clock for displaying a frame. After receiving the request, the apparatus may determine whether two consecutive frames (e.g., a current frame and a prior frame) have a different layer configuration. If so, the request to change the speed of the clock may be delayed until a new set of two consecutive frames are identified with a same layer configuration or until the delay period reaches a timeout limit.