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:
Jan. 28, 2003
Filed:
Mar. 09, 1999
James M. Janky, Los Altos, CA (US);
Arthur E. Anderson, Sunnyvale, CA (US);
Trimble Navigation Limited, Sunnyvale, CA (US);
Abstract
A method and apparatus for coupling data from a base station to a rover unit for determining the position of the rover unit. Multiple radio channels are monitored by the base station and a radio channel is assigned that is unoccupied. A RTK message is then transmitted by the base station that includes the assigned radio channel. The rover unit then monitors the assigned radio channel for the next RTK message. The assigned radio channel is periodically updated. Each following RTK message is transmitted over a previously assigned radio channel. This results in both the base station and the rover unit “hopping” from channel to channel for communicating the RTK message from the base station to the rover unit. The rover unit uses the received RTK message, along with signals from a position determination system, for determining position.