Video transmission method, apparatus, and system

Patent metadata

Field	Value
Publication number	US-12267618-B2
Application number	US-202218145111-A
Country	US
Kind code	B2
Filing date	Dec 22, 2022
Priority date	Jun 23, 2020
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

A video transmission method includes that a terminal sends first field of view information to a server through a first link based on a first period. The server receives the first field of view information from the terminal through the first link based on the first period. After determining, based on a second period, that the first field of view information is latest field of view information, the server obtains data of a first frame of image corresponding to the first field of view information, and sends the data of the first frame of image to the terminal through a second link. The terminal receives the data of the first frame of image from the server through the second link based on the second period.

First claim

What is claimed is:

1. A method implemented by a terminal, wherein the method comprises:
sending, to a server through a first link based on a first period, first field of view information; and
receiving, from the server through a second link based on a second period, data of a first frame of a first image that corresponds to the first field of view information,
wherein the second period is based on a frame rate of a video, and
wherein the first frame of the first image belongs to the video.

2. The method of claim 1 , wherein sending the first field of view information comprises sending, to the server through the first link based on a clock of the terminal, the first field of view information.

3. The method of claim 1 , further comprising sending, to the server, first information indicating a first reference moment at which the server is to send image data to the terminal for a first time.

4. The method of claim 3 , further comprising sending, to the server, second information indicating to send data of a second frame of the first image at a second reference moment when a quantity of frames of a second image buffered by the terminal is greater than or equal to a threshold, wherein the second reference moment is later than a first moment, wherein the first moment is when the second frame is sent based on the second period that uses the first reference moment as a start moment, and wherein the second frame is a next frame of the first image to be received by the terminal.

5. The method of claim 4 , wherein the second information comprises the second reference moment and a frame number of the second frame.

6. The method of claim 4 , wherein the second information comprises the second reference moment or a frame number of the second frame.

7. The method of claim 3 , further comprising sending, to the server, second information indicating to send data of a second frame of the first image at a second reference moment when a quantity of frames of a second image buffered by the terminal is less than or equal to a threshold, wherein the second reference moment is earlier than a first moment, wherein the first moment is when the second frame is sent based on the second period that uses the first reference moment as a start moment, and wherein the second frame is a next frame of the first image to be received by the terminal.

8. The method of claim 7 , wherein the second information comprises the second reference moment and a frame number of the second frame.

9. The method of claim 7 , wherein the second information comprises the second reference moment or a frame number of the second frame.

10. A terminal comprising:
a transmitter configured to send, to a server through a first link based on a first period, first field of view information; and
a receiver coupled to the transmitter and configured to receive, from the server through a second link based on a second period, data of a first frame of a first image that corresponds to the first field of view information,
wherein the second period is based on a frame rate of a video, and
wherein the first frame of the first image belongs to the video.

11. The terminal of claim 10 , further comprising a clock coupled to the transmitter, wherein the transmitter is further configured to further send, to the server through the first link based on the clock, the first field of view information.

12. The terminal of claim 10 , wherein the transmitter is further configured to send, to the server, first information indicating a first reference moment at which the server is to send image data to the terminal for a first time.

13. The terminal of claim 12 , wherein, the transmitter is further configured to send, to the server, second information indicating to send data of a second frame of the first image at a second reference moment when a quantity of frames of a second image buffered by the terminal is greater than or equal to a threshold, wherein the second reference moment is later than a first moment, wherein the first moment is when the second frame is sent based on the second period that uses the first reference moment as a start moment, and wherein the second frame is a next frame of the first image to be received by the terminal.

14. The terminal of claim 13 , wherein the second information comprises the second reference moment and a frame number of the second frame.

15. The terminal of claim 13 , wherein the second information comprises the second reference moment or a frame number of the second frame.

16. The terminal of claim 12 , wherein the transmitter is further configured to send, to the server, second information indicating to send data of a second frame of the first image at a second reference moment when a quantity of frames of a second image buffered by the terminal is less than or equal to a threshold, wherein the second reference moment is earlier than a first moment, wherein the first moment is when the second frame is sent based on the second period that uses the first reference moment as a start moment, and wherein the second frame is a next frame of the first image to be received by the terminal.

17. The terminal of claim 16 , wherein the second information comprises the second reference moment and a frame number of the second frame.

18. The terminal of claim 16 , wherein the second information comprises the second reference moment or a frame number of the second frame.

19. A communication system comprising:
a server configured to:
determine, based on a second period, that first field of view information is latest field of view information;
obtain data of a first frame of image corresponding to the first field of view information, wherein the second period is based on a frame rate of a video, and wherein the first frame of the first image belongs to the video; and
send the data of the first frame of image through a second link; and

a terminal coupled to the server and configured to:
send, to the server through a first link based on a first period, the first field of view information; and
receive, from the server through the second link based on the second period, the data of the first frame of image.

20. The communication system of claim 19 , wherein the terminal is further configured to send, to the server through the first link based on a clock of the terminal, the first field of view information.

Assignees

• Huawei Tech Co Ltd

Inventors

• Wu Hao
• Zhu Yongping
• Liu Hongbo
• Wu Liang
• Yang Yong

Classifications

• H04L65/613

  for the control of the source by the destination (control signals issued by the client directed to the server or network components specially adapted for selective content distribution H04N21/637) · CPC title

• H04L65/756

  adapting media to device capabilities · CPC title

• H04N5/4448 Primary

  for frame-grabbing · CPC title

• H04N5/38

  Transmitter circuitry {for the transmission of television signals according to analogue transmission standards} (H04N5/14 takes precedence) · CPC title

• H04L65/80 Primary

  Responding to QoS · CPC title