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    Controlling refreshes of pixels in display devices
    14.
    发明授权
    Controlling refreshes of pixels in display devices 有权

    公开(公告)号：US11244588B2

    公开(公告)日：2022-02-08

    申请号：US16980500

    申请日：2018-04-24

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Lee Atkinson ,  Cheng-Hua Yu

    IPC: G09G3/20 ,  G02B27/01 ,  G06F3/01 ,  G06F3/0488

    Abstract: A display device includes pixels, a serial-to-parallel converter (SPC), a row driver, a column driver, and a switch. The pixels are arranged in rows and columns which include a first column and a first row. A first pixel resides at an intersection of the first row and first column. The SPC extracts, from a signal sent by a graphics controller, pixel data and a command. The row driver initiates a refresh of the pixels residing in the first row based on the pixel data. The column driver transmits the pixel data to the first column. During the refresh, the switch allows transmission of the pixel data to the first pixel when the command indicates that the first pixel is to be refreshed and prevents transmission of pixel data to the first pixel when the command indicates that the first pixel is not to be refreshed.

    Timing controllers for display devices
    17.
    发明授权
    Timing controllers for display devices 有权

    公开(公告)号：US10747293B2

    公开(公告)日：2020-08-18

    申请号：US16075624

    申请日：2017-01-23

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： Cheng-Hua Yu ,  Hogan Yeh

    IPC: G06F1/3218 ,  G06F1/3234 ,  G06F1/3231 ,  G09G3/36 ,  G09G5/393 ,  G09G5/00

    Abstract: In one example, a timing controller is described, which may include a receiver to receive input data having an input signal from a source unit. The timing controller may include a data control unit to enable panel self-refresh (PSR) mode when the input signal is within a first voltage range and disable the PSR mode when the input signal is within a second voltage range. The first voltage range being different from the second voltage range. The timing controller may include a transmitter to transmit the input data to a display based on an output of the data control unit.

    Computing Devices with Display Mode Control Units
    20.
    发明申请
    Computing Devices with Display Mode Control Units 有权

    公开(公告)号：US20220156027A1

    公开(公告)日：2022-05-19

    申请号：US17442884

    申请日：2019-07-23

    Applicant: Hewlett-Packard Development Company, L.P.

    Inventor： Mario E. Campos ,  Hsing-Hung Hsieh ,  Cheng-Hua Yu

    IPC: G06F3/14 ,  G09G5/00 ,  G06F1/16 ,  G06F9/54

    Abstract: A portable computing device may comprise an internal central processing unit (CPU), an internal graphics processing unit (GPU), a communications port to communicate with an external computing device, a first electronic display connected to the internal GPU, a second electronic display connected to the internal GPU, a touch input device to receive touch inputs from a user, and a display mode control unit. The control unit may cause the portable computing device to selectively operate in a dual display operational mode, a direct input operational mode, and an indirect input operational mode.

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