Time since last fix annunciation system for GPS-based wireless r

Details Time since last fix annunciation system for GPS-based wireless r Time since last fix annunciation system for GPS-based wireless r

1996-02-28

1998-04-07

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a satellite

3644497, H04B 7185, G01S 502

Patent

active

057369623

ABSTRACT:
In a wireless emergency location system in which a cellular phone is utilized to communicate the location of an individual or vehicle by announcing position based on the output of a GPS receiver, time since last fix is computed and annunciated to permit emergency personnel to ascertain if the position information is valid. In a one embodiment, velocity and direction of travel are also annunciated for permitting emergency personnel to calculate the location of the phone and thus a stricken individual. Time since last fix as well as velocity and direction annunciation is also used to enable location of stolen or hijacked vehicles assuming location information is no longer available at the phone or satellite fix has been lost.

REFERENCES:
patent: 5355140 (1994-10-01), Slavin et al.
patent: 5432841 (1995-07-01), Rimer

Affiliated with

Also associated with

Rating

Time since last fix annunciation system for GPS-based wireless r does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Time since last fix annunciation system for GPS-based wireless r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time since last fix annunciation system for GPS-based wireless r will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-16955