Methods and apparatus for decreasing time to first fix of GPS receiver
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 4, 2008
Grant Date -
Aug 14, 2008
app pub date -
Feb 14, 2007
filing date -
Feb 14, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention provides a GPS receiver which is capable of computing a local time reference without employing a RTC circuitry and employing a nonvolatile storing unit to store backup navigation data, wherein the local time reference and the backup navigation data can be used to reduce the TTFF of the GPS receiver. The GPS receiver includes a nonvolatile storing unit and a positioning unit. The positioning unit is capable of retrieving the backup navigation data from the nonvolatile storing unit and computing a local time reference after said GPS receiver is powered up. The positioning unit is further capable of employing the backup navigation data and the local time reference to computing the position of the GPS.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully