Method and apparatus for reducing message length within a commun

Details Method and apparatus for reducing message length within a commun Method and apparatus for reducing message length within a commun

1996-10-09

1998-04-28

Chin, Gary

Data processing: vehicles, navigation, and relative location

Navigation

Employing position determining equipment

701202, 340988, G06F16500

Patent

active

057458677

ABSTRACT:
Latitude and longitude information within a wireless navigation and information system (200) is transmitted from route planning equipment (207) to a base site (201). A translator (203) converts each reference point from an absolute coordinate to a relative coordinate by subtracting a reference geographic location from each absolute coordinate (350). The base site (201) then sends a message comprising the relative coordinates for each reference point to the remote unit (213). Finally, the remote unit (213) utilizes the reference geographic location and calculates absolute coordinates for each reference point and passes this information to any navigation equipment (705) that is coupled to the remote unit (213). Broadcasting only the relative coordinates of each reference point to the remote unit (213) allows reference points to be transmitted to the remote unit (213) in a shorter length message than with prior-art methods.

REFERENCES:
patent: 4954958 (1990-09-01), Savage et al.
patent: 5067081 (1991-11-01), Person
patent: 5172321 (1992-12-01), Ghaem et al.
patent: 5544061 (1996-08-01), Morimoto et al.
patent: 5648769 (1997-07-01), Sato et al.

Affiliated with

Also associated with

Rating

Method and apparatus for reducing message length within a commun does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for reducing message length within a commun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reducing message length within a commun will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1544017