Communications: directive radio wave systems and devices (e.g. – Determining distance – Altimeter
Reexamination Certificate
2006-11-28
2006-11-28
Gregory, Bernarr E. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Determining distance
Altimeter
C342S118000, C342S165000, C342S173000, C342S174000, C342S175000, C342S195000, C342S357490, C342S357490, C702S085000, C702S098000, C702S127000, C702S138000, C073S384000, C073S865200, C701S001000, C701S003000, C701S004000, C701S010000
Reexamination Certificate
active
07142152
ABSTRACT:
A portable, handheld electronic navigation device includes an altimeter and a GPS unit. An internal memory stores cartographic data, for displaying the cartographic data on a display of the navigation device. Accordingly, the device is capable of displaying cartographic data surrounding a location of the unit as determined by GPS and altitude information as determined by the barometric altimeter and GPS. The device provides an enhancement of the calibration and hence the accuracy of barometric altimeter measurements with the aid of derived altitudes from a GPS. The device is able to determine the need for calibration and perform the subsequent computations necessary to facilitate the calibration. Furthermore, the device is able to determine a correction quantity that should be applied to barometric altitude readings, thereby allowing the device to be calibrated while in motion. Both of these features ultimately result in a more accurate determination of altitude. In accordance with an aspect of the invention, the altimeter of the navigation device may be calibrated with altitude information entered by a user, with altitude information obtained from the cartographic, with altitude information derived from GPS or with any combinations thereof.
REFERENCES:
patent: 5146231 (1992-09-01), Ghaem et al.
patent: 5210540 (1993-05-01), Masumoto
patent: 5266958 (1993-11-01), Durboraw, III
patent: 5572217 (1996-11-01), Flawn
patent: 5583776 (1996-12-01), Levi et al.
patent: 5646857 (1997-07-01), McBurney et al.
patent: 5717406 (1998-02-01), Sanderford et al.
patent: 5745054 (1998-04-01), Wilkens
patent: 5757316 (1998-05-01), Buchler
patent: 5820080 (1998-10-01), Eschenbach
patent: 5917449 (1999-06-01), Sanderford et al.
patent: 5940035 (1999-08-01), Hedrick
patent: 5952961 (1999-09-01), Denninger
patent: 5955973 (1999-09-01), Anderson
patent: 6055477 (2000-04-01), McBurney et al.
patent: 6067046 (2000-05-01), Nichols
patent: 6084547 (2000-07-01), Sanderford et al.
patent: 6157891 (2000-12-01), Lin
patent: 6178363 (2001-01-01), McIntyre et al.
patent: 6188956 (2001-02-01), Walters
patent: 6216064 (2001-04-01), Johnson et al.
patent: 6246960 (2001-06-01), Lin
patent: 6249246 (2001-06-01), Bode et al.
patent: 6256559 (2001-07-01), Tsui
patent: 6259380 (2001-07-01), Jensen
patent: 6324448 (2001-11-01), Johnson
patent: 6381540 (2002-04-01), Beason et al.
patent: 6430479 (2002-08-01), Johnson
patent: 6434485 (2002-08-01), Beason et al.
patent: 6522298 (2003-02-01), Burgett et al.
patent: 6529827 (2003-03-01), Beason et al.
patent: 6768449 (2004-07-01), Burgett et al.
patent: 63-26529 (1988-02-01), None
patent: 9-133754 (1997-05-01), None
patent: 2001-91635 (2001-04-01), None
Burgett Scott
Olivier Tracy
Garmin Ltd.
Gregory Bernarr E.
Terrell David L.
LandOfFree
Device and method for calibrating and improving the accuracy... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device and method for calibrating and improving the accuracy..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device and method for calibrating and improving the accuracy... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3633605