公开(公告)号：US12278750B1

公开(公告)日：2025-04-15

申请号：US18511886

申请日：2023-11-16

Applicant: POSTECH Research and Business Development Foundation

Inventor： Hwang Jun Song ,  Seung Gyu Ji

IPC: H04L43/0864 ,  H04L67/104

Abstract: Provided is a system and method for estimating an end-to-end delay between blockchain nodes in peer-to-peer (P2P) networks. The system includes a coordinate system construction unit configured to designate an origin node and anchor nodes among participating nodes having a distributed ledger of P2P networks, construct a first coordinate system of a predetermined dimension by exchanging control messages between the origin node and the anchor nodes and the participating nodes, and construct a second coordinate system of another predetermined dimension and a dimension determination unit configured to determine a dimension to be applied to the current P2P networks by comparing dimension-specific delays or control message overheads of the first coordinate system and the second coordinate system.

公开(公告)号：US12148104B2

公开(公告)日：2024-11-19

申请号：US17731063

申请日：2022-04-27

Applicant: POSTECH Research and Business Development Foundation

Inventor： Hwang Jun Song ,  Hyun Min Noh

IPC: G06T19/00 ,  G06T7/73 ,  G06T19/20 ,  H04L65/65 ,  H04L65/80

Abstract: A system for providing an adaptive AR streaming service may comprise: a cloud AR server that stores an AR object composed of a plurality of progressive mesh chunks, and a meta file including property information of the AR object and the progressive mesh chunks; and a mobile augmented reality (AR) device that requests and receives the meta file from the cloud AR server, parses the meta file to identify a property of the AR object, and implements augmented reality.

公开(公告)号：US11665231B1

公开(公告)日：2023-05-30

申请号：US17565277

申请日：2021-12-29

Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Hwang Jun Song ,  Seung Gyu Ji ,  Hyun Min Noh

IPC: H04L67/104 ,  H04L43/0852 ,  H04L67/1061

CPC classification number: H04L67/1044 ,  H04L43/0852 ,  H04L67/1061

Abstract: A method for generating and managing a 3D coordinate system based on a transmission delay with an O(N) overhead by calculating a transmission delay between large-scale P2P nodes may comprise: generating a coordinate system and setting a node located at an origin of the coordinate system as a block generation node; calculating coordinates of a new node when an additional transmission delay occurs in a process of measuring a transmission delay from the block generation node to another node and requesting coordinates; performing self-cross check in which the block generation node periodically calculates coordinates thereof again; and updating coordinates of nodes comprising the origin of the coordinate system by reflecting a change in a transmission delay between nodes according to a network state change, based on a result of the self-cross check.