US2002033767A1

5G,4G,3G,2G

Title

Method and apparatus for satellite positioning system (SPS) time measurement

Application Number:

US20010989370

Publication Date:

21-03-2002

Current Assignee:

Family ID:

Application Date:

19-11-2001

Publication Country:

US

Priority Date:

03-02-1997

Declaring Company:

Abstract  Abstract

A method and apparatus for measuring time related to satellite data messages which are used with satellite positioning systems (SPS). In one method a first record of at least a portion of a satellite data message is received at an entity which is typically a basestation. The first record is compared with a second record of the satellite data message where the first record and the second record overlap at least partially in time. Then a time is determined from this comparison and this time indicates when the first record (or the source from which the first record was obtained) was received at a remote entity which is typically a mobile SPS receiver. Various other methods of the invention are described and various apparatuses of the invention are also described. The methods and apparatuses measure time of day using SPS signals without reading the satellite data messages which are transmitted as data within these signals. The methods and apparatuses are suitable for situations in which the received signal level is too weak to allow reading of the satellite data messages.

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:openly and comprehensibly describes all details of the invention in the patent document.

Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.

Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.

Family member:related patents or applications that share a common priority or original filing.