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:
Mar. 11, 2003
Filed:
Sep. 30, 1997
Stanley A. White, San Clemente, CA (US);
Kenneth S. Walley, Portola Hills, CA (US);
James W. Johnston, Rancho Santa Margarita, CA (US);
P. Michael Henderson, Tustin, CA (US);
Kelly H. Hale, Aliso Viejo, CA (US);
Warner B. Andrews, Jr., Boulder, CO (US);
Jonathan I. Siann, San Diego, CA (US);
SiRF Technology, Inc., San Jose, CA (US);
Abstract
A system is provided for communicating location and other related information of a field unit to a remote base station. The field unit generates position signals based on signals received from communication with a plurality of GPS satellites. These position signals are transmitted to a remote base station, where they are processed and displayed. The field unit includes an environmental circuit having devices for determining an environmental condition and producing an environmental signal representative of the environmental condition. The environmental signal is also transmitted to the remote base station for processing and display. The field unit is also provided with a cellular link circuit for transmitting the position signals and the environmental signal to the remote base station via a cellular link.