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.

Date of Patent:
Feb. 14, 2012

Filed:

Jan. 14, 2010
Applicants:

Kyung-woo Lee, Yongin-si, KR;

Yun-je OH, Suwon-si, KR;

Dae-kwang Jung, Suwon-si, KR;

Jeong-seok Choi, Yongin-si, KR;

Hong-seok Shin, Yongin-si, KR;

Sung-bum Park, Suwon-si, KR;

Inventors:

Kyung-Woo Lee, Yongin-si, KR;

Yun-Je Oh, Suwon-si, KR;

Dae-Kwang Jung, Suwon-si, KR;

Jeong-Seok Choi, Yongin-si, KR;

Hong-Seok Shin, Yongin-si, KR;

Sung-Bum Park, Suwon-si, KR;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Provided is a method of measuring the position of a portable terminal, comprising detecting indoor illuminating light, and outputting an electric signal corresponding to the detected indoor illuminating light, obtaining a plurality of data frames from the output electrical signal, and calculating a position of the portable terminal based on information regarding the position of a corresponding reference light source included in each data frame and an identifier corresponding to the reference light source included in said each frame and a reception time of said each data frame.


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