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:
Feb. 21, 2012
Filed:
Mar. 22, 2006
Jae-heung Lee, Suwon-si, KR;
Myung-sun Kim, Uiwang-si, KR;
Sung-hyu Han, Seoul, KR;
Young-sun Yoon, Suwon-si, KR;
Sun-nam Lee, Suwon-si, KR;
Bong-seon Kim, Seongnam-si, KR;
Jae-heung Lee, Suwon-si, KR;
Myung-sun Kim, Uiwang-si, KR;
Sung-hyu Han, Seoul, KR;
Young-sun Yoon, Suwon-si, KR;
Sun-nam Lee, Suwon-si, KR;
Bong-seon Kim, Seongnam-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
A method of measuring round trip time (RTT) includes: chain-hashing at least one random number to create a plurality of hash values; (b) transmitting one of the created hash values to a device and starting to measure RTT of the device; and (c) receiving from the device a response to the transmitted hash value and ending the RTT measurement, thereby performing a more effective proximity check than a conventional proximity check requiring encryptions and decryptions of several tens of times through several thousands of times.