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：US20240135900A1

公开(公告)日：2024-04-25

申请号：US18548179

申请日：2021-04-13

Applicant: QUALCOMM Incorporated

Inventor： Nan ZHANG ,  Ike IKIZYAN ,  Xinchao YANG ,  Zhizhou CHEN

IPC: G09G5/10 ,  G06T5/92 ,  G06V10/60

CPC classification number: G09G5/10 ,  G06T5/92 ,  G06V10/60 ,  G09G2320/0653 ,  G09G2340/0435

Abstract: Methods and apparatus for graphics processing, such as producing a smooth transition between images of different dynamic ranges (e.g., Standard Dynamic Range (SDR) images and High Dynamic Range (HDR) images). An example method generally includes using a high frame rate during a transition period to allow properties of images to incrementally vary. The properties may include brightness (i.e., luminance), color gamut, tone mapping, among others. For example, during the transition period, a subset of HDR images are displayed at a second frame rate (e.g., 120 Hz) higher than a frame rate based on the HDR images (e.g., 30 Hz). Simultaneously, a brightness level (as well as other aspects) of the display panel is adjusted incrementally from an SDR brightness level to an HDR brightness level during the transition time period over the subset of the HDR images.

公开(公告)号：US20240233680A9

公开(公告)日：2024-07-11

申请号：US18548179

申请日：2021-04-14

Applicant: QUALCOMM Incorporated

Inventor： Nan ZHANG ,  Ike IKIZYAN ,  Xinchao YANG ,  Zhizhou CHEN

IPC: G09G5/10 ,  G06T5/92 ,  G06V10/60

CPC classification number: G09G5/10 ,  G06T5/92 ,  G06V10/60 ,  G09G2320/0653 ,  G09G2340/0435

Abstract: Methods and apparatus for graphics processing, such as producing a smooth transition between images of different dynamic ranges (e.g., Standard Dynamic Range (SDR) images and High Dynamic Range (HDR) images). An example method generally includes using a high frame rate during a transition period to allow properties of images to incrementally vary. The properties may include brightness (i.e., luminance), color gamut, tone mapping, among others. For example, during the transition period, a subset of HDR images are displayed at a second frame rate (e.g., 120 Hz) higher than a frame rate based on the HDR images (e.g., 30 Hz). Simultaneously, a brightness level (as well as other aspects) of the display panel is adjusted incrementally from an SDR brightness level to an HDR brightness level during the transition time period over the subset of the HDR images.