Horology: time measuring systems or devices – Plural timepiece system or system device
Reexamination Certificate
2006-11-21
2006-11-21
Miska, Vit W. (Department: 2841)
Horology: time measuring systems or devices
Plural timepiece system or system device
C368S047000, C455S456100, C455S502000, C702S089000
Reexamination Certificate
active
07139225
ABSTRACT:
Method and apparatus to implement a “virtual” real-time clock at a terminal based on time information from multiple communication systems. At least one system (e.g., GPS) provides “absolute” time information for the virtual real-time clock, and at least one other system (e.g., a cellular system) provides “relative” time information. The virtual real-time clock is “time-stamped” with absolute time as it becomes available from the first system. Relative time (which may be received from multiple asynchronous transmitters) is mapped to the timeline of the virtual real-time clock as it is received from the second system. Absolute time at any arbitrary time instant on the timeline may then be estimated based on the absolute time from the first system and the relative time from the second system. Absolute times from the first system for two or more time instants may also be used to calibrate the relative time from the second system.
REFERENCES:
patent: 5416808 (1995-05-01), Witsaman et al.
patent: 5444672 (1995-08-01), Kushita
patent: 5510797 (1996-04-01), Abraham et al.
patent: 5872774 (1999-02-01), Wheatley, III et al.
patent: 5945944 (1999-08-01), Krasner
patent: 6078873 (2000-06-01), Shutty et al.
patent: 6150980 (2000-11-01), Krasner
patent: 6185429 (2001-02-01), Gehrke et al.
patent: 6236623 (2001-05-01), Read et al.
patent: 6377517 (2002-04-01), Tursich
patent: 6433734 (2002-08-01), Krasner
patent: 6483825 (2002-11-01), Seta
patent: 6556512 (2003-04-01), Winkler
patent: 6603978 (2003-08-01), Carlsson et al.
patent: 6633825 (2003-10-01), Burns et al.
patent: 6678510 (2004-01-01), Syrjarinne et al.
patent: 6758202 (2004-07-01), Russell et al.
patent: 6865380 (2005-03-01), Syrjarinne
patent: 2002/0173322 (2002-11-01), Turetzky et al.
patent: 0010028 (2000-02-01), None
patent: 0173467 (2001-10-01), None
Greenhaus Bruce W.
Mays Andrea L.
Miska Vit W.
Qualcomm Incorporated
Wadsworth Philip
LandOfFree
Virtual real-time clock based on time information from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Virtual real-time clock based on time information from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Virtual real-time clock based on time information from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3688258