The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 03, 2021
Filed:
Jan. 22, 2019
Doosan Heavy Industries & Construction Co., Ltd., Changwon-si, KR;
Seong Yeol Yang, Yongin-si, KR;
Seock Moon Yoon, Daejeon, KR;
Young Hoon Seo, Suwon-si, KR;
Seung Take Oh, Daejeon, KR;
DOOSAN HEAVY INDUSTRIES & CONSTRUCTION CO., LTD., Gyeongsangnam-do, KR;
Abstract
A position determination device determines the position of a terminal. A signal of a sensor attached to one or both of a beacon and a terminal is sampled, so that a signal of the beacon may be transmitted and received only when the beacon or the terminal has moved. A plurality of beacons sequentially transmit beacon signals to determine the terminal position by determining a distance between the respective beacons and the terminal based on a time to receive the beacons. The device includes a beacon for transmitting a beacon signal; a terminal for receiving the beacon signal; and a first sensor attached to the terminal to sense movement of the terminal and to output a first sensing signal indicative of the sensed movement. The terminal has a reception mode for receiving the beacon signal and turns on/off the reception mode based on the first sensing signal.