公开(公告)号：US11997153B2

公开(公告)日：2024-05-28

申请号：US17597236

申请日：2020-07-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pengcheng Nie ,  Bihai Wang ,  Zequ Yang

IPC: H04L65/70 ,  H04L65/80 ,  H04N21/647

CPC classification number: H04L65/70 ,  H04L65/80 ,  H04N21/64769 ,  H04N21/64792

Abstract: A screen projection method and a device, the method including performing, by a controlling device, at least one of sending, based on a reliability transmission protocol, in response to an image frame that is to be sent being an I frame, a data packet that carries the image frame, sending, based on the reliability transmission protocol, in response to the image frame being a P frame that meets a first preset condition, the data packet that carries the image frame, or sending, based on a non-reliability transmission protocol, in response to the image frame being a P frame that does not meet the first preset condition, the data packet that carries the image frame.

公开(公告)号：US20220321634A1

公开(公告)日：2022-10-06

申请号：US17597236

申请日：2020-07-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Pengcheng Nie ,  Bihai Wang ,  Zequ Yang

IPC: H04L65/70 ,  H04N21/647 ,  H04L65/80

Abstract: A screen projection method and a device, the method including performing, by a controlling device, at least one of sending, based on a reliability transmission protocol, in response to an image frame that is to be sent being an I frame, a data packet that carries the image frame, sending, based on the reliability transmission protocol, in response to the image frame being a P frame that meets a first preset condition, the data packet that carries the image frame, or sending, based on a non-reliability transmission protocol, in response to the image frame being a P frame that does not meet the first preset condition, the data packet that carries the image frame.

公开(公告)号：US12279079B2

公开(公告)日：2025-04-15

申请号：US17625048

申请日：2020-07-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bihai Wang ,  Pengcheng Nie ,  Licheng Song ,  Xiaolei Liu

IPC: H04N9/31 ,  G06F3/14 ,  G09G3/00 ,  G09G5/14 ,  H04N21/2662 ,  H04N21/41 ,  H04N21/414 ,  H04N21/431 ,  H04N21/436 ,  H04N21/4402 ,  H04N21/4408

Abstract: Embodiments of this application provide a projection display method and an electronic device, and relate to the field of terminal technologies, to dynamically adjust, based on a quantity of source devices, a parameter of display data projected onto a destination device, so as to improve display smoothness and use experience of a user during projection. The method includes: A source device sends a projection instruction to a destination device, where the projection instruction is used to instruct to project a display interface of the source device onto the destination device for display. The source device receives a first broadcast sent by the destination device, where the first broadcast includes a quantity N of source devices that need to perform projection onto the destination device for display. The source device negotiates a first projection parameter with the destination device based on the quantity N of the source devices, where the first projection parameter includes one or more of a projection resolution, a transmission bit rate, or an encoding compression rate. The source device sends first display data to the destination device based on the first projection parameter.