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. 11, 2009
Filed:
Nov. 06, 2000
Rodric C. Fan, Fremont, CA (US);
Per K. Enge, Mountain View, CA (US);
Rodric C. Fan, Fremont, CA (US);
Per K. Enge, Mountain View, CA (US);
Trimble Navigation Limited, Sunnyvale, CA (US);
Abstract
A positioning information distribution system for distributing positioning information through a data network is described. In one embodiment, the system distributes satellite information from a global positioning system (GPS). The system includes an information processing station connected to a data network accessible by wireless communication, a receiving station including a GPS receiver, and a mobile unit including a GPS receiver and a wireless receiver. The information processing station collects GPS satellite information from the receiving station and transmits the satellite information to the mobile unit using wireless communication. Alternately, a network of receiving stations are provided. The mobile unit can obtain the satellite information from the information processing station for determining its measured position, even when the mobile unit is roaming in an urban area and is not able to observe the GPS satellites for the lengthy observation period needed to acquire the satellite information itself.