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. 02, 2010
Filed:
Jul. 17, 2007
Tomoyuki Kurata, Matsumoto, JP;
Tomoyuki Kurata, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A communication base station includes a propagation time evaluation section which determines whether or not a propagation time required for a communication radio wave to propagate between the communication base station and a positioning device is within a predetermined allowable time range, a code phase calculation section which calculates a code phase of each satellite signal, a difference calculation section which calculates a difference between the code phase calculated by the communication base station and a positioning-side code phase, a difference evaluation section which determines whether or not the difference is within a multipath range which is a difference range when the positioning-side code phase is affected by a multipath, a correction value transmission section which transmits the code phase calculated by the communication base station to the positioning device when the difference evaluation section has determined that the difference is within the multipath range, and the like.