公开(公告)号：US10819823B2

公开(公告)日：2020-10-27

申请号：US15667792

申请日：2017-08-03

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Muhammad Bilal ,  Shin-Gak Kang ,  Wook Hyun ,  Sung-Hei Kim ,  Ju-Young Park ,  Mi-Young Huh

IPC: H04L29/08 ,  G06F12/122 ,  G06F12/126

Abstract: Disclosed herein are an in-network caching apparatus and method. The in-network caching method using the in-network caching apparatus includes receiving content from a second node in response to a request from a first node; checking a Conditional Leave Copy Everywhere (CLCE) replication condition depending on a number of requests for the content; checking a priority condition based on a result value of a priority function for the content; checking a partition depending on the number of requests for the content; performing a cache replacement operation for the content depending on a result of checking the partition for the content; and transmitting the content to the first node.

公开(公告)号：US09728052B2

公开(公告)日：2017-08-08

申请号：US14257350

申请日：2014-04-21

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Mi-Young Huh ,  Wook Hyun ,  Sung-Hei Kim ,  Shin-Gak Kang

IPC: G08B5/22 ,  G08B7/06

CPC classification number: G08B7/066

Abstract: A digital signage system and a method of providing information using the digital signage system are disclosed. The digital signage terminal includes an emergency detection unit, an emergency detection message generation unit, a communication unit, and an emergency alert message processing unit. The emergency detection unit collects the surrounding emergency-related information of the digital signage terminal. The emergency detection message generation unit generates an emergency detection message including the collected emergency-related information. The communication unit transmits the generated emergency detection message to a digital signage server, and receives an emergency alert message including an emergency alert corresponding to an emergency situation from the digital signage server. The emergency alert message processing unit parses the emergency alert message, and provides the emergency alert included in the emergency alert message to a user.