Patent ID: 11876947
Assignee: FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 0:
1. A buffer management method performed by a server to provide a cloud-based virtual reality service, comprising:
receiving user's motion information from a user terminal via a network;
calculating user's first viewpoint based on user's first motion information among the received user's motion information;
calculating user's second viewpoint based on user's second motion information subsequent to the first motion information among the received user's motion information;
determining a plurality of image tiles corresponding to a content to be displayed on the user terminal based on the first viewpoint; and
transmitting modified image tiles to the user terminal via the network in an ascending order of distance from the first viewpoint, and
wherein the modified image tiles include image tiles obtained by modifying the plurality of image tiles based on the second viewpoint when a difference between the first viewpoint and the second viewpoint is equal to or larger than the predetermined value.