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. 26, 2013
Filed:
Dec. 14, 2010
Polly Huang, Taipei, TW;
Seng-yong Lau, Taipei, TW;
Ling-jyh Chen, Taipei, TW;
Jyh-how Huang, Taipei, TW;
Polly Huang, Taipei, TW;
Seng-Yong Lau, Taipei, TW;
Ling-Jyh Chen, Taipei, TW;
Jyh-How Huang, Taipei, TW;
National Taiwan University, Taipei, TW;
Abstract
The present invention relates to a system, and a method for time synchronization with low power consumption and high accuracy. The system comprises a plurality of devices for time synchronization. Each device comprises a GPS receiver, a microprocessor, and an oscillator. The microprocessor generates a drift per second according to the difference between the PPS signal and the clock signal, and calibrates the clock signal constantly according to drift per second. The GPS receiver is turned off when the drift per second is obtained, and then is turned on after a pre-determined time period for updating the drift per second.