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:
Nov. 27, 2001
Filed:
Jun. 06, 2000
Christopher N. Kurby, Elmhurst, IL (US);
Michael D. Kotzin, Buffalo Grove, IL (US);
Daniel T. Buhmann, Hainesville, IL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A system for rapidly acquiring a time reference for the location determination of a wireless communication device. The system includes a wireless communication device (,), a GPS satellite (,) and a communication satellite (,). The method comprises the steps of acquiring a communication satellite signal (,) and using the finite frame time to establish a course time reference. Once the course time reference is established, an absolute device time is determined by the wireless communication device, which as a result is synchronized to the absolute time of the communication satellite (,) to within ten milliseconds. The absolute device time is then used to synchronize the GPS portion of the wireless communication device with the GPS satellite system.