US6839021B2

5G,4G,3G,2G

Title

Method and apparatus for determining time in a satellite positioning system

Application Number:

US20030461191

Publication Date:

04-01-2005

Current Assignee:

Family ID:

Application Date:

13-06-2003

Publication Country:

US

Priority Date:

03-02-1997

Declaring Company:

Abstract  Abstract

A method and apparatus for determining a reference time associated with a satellite positioning system. In turn the reference time in one embodiment may be used to determine other navigational information. Such navigational information may include for example the location/position of a satellite positioning system (SPS) receiver. In one embodiment a relative velocity between an SPS receiver and a set of one or more satellites is used to determine an offset between time as indicated by the SPS receiver and the reference time. According to another embodiment of the invention an error statistic is used to determine the reference time. According to yet another embodiment of the invention two records each representing at least a portion of a satellite message are compared to determine time. In one implementation the SPS receiver is mobile and operates in conjunction with a basestation to determine time and/or other navigational information according to one or a combination of the methods described.

Note:

The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)

The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

Explicitly disclosed patent

Implicitly disclosed patent

Basis patent

Family member