Method and apparatus for providing reference frequency...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C455S012100, C455S141000, C455S502000, C455S526000, C342S357490, C342S357490, C342S358000, C370S328000, C370S332000, C370S513000

Reexamination Certificate

active

07620403

ABSTRACT:
A mobile communication device (202) and peer mobile communication devices (204, 206) are capable of direct voice and data communication. The mobile communication device has a reference oscillator (104) which is used for generating operating frequencies, and is subject to frequency errors resulting from manufacturing tolerances, heat, and other error sources. The mobile communication device receives a frequency correction message (506) from a peer mobile communication device that has calibrated its reference oscillator. The frequency correction message contain offset information which is used by the mobile communication device to determine its offset (316) from a nominal frequency (302).

REFERENCES:
patent: 5739786 (1998-04-01), Greenspan et al.
patent: 5841396 (1998-11-01), Krasner
patent: 5940747 (1999-08-01), Grohgans et al.
patent: 6026307 (2000-02-01), Blom et al.
patent: 6041222 (2000-03-01), Horton et al.
patent: 6240276 (2001-05-01), Camp, Jr.
patent: 6671291 (2003-12-01), Soliman
patent: 6741842 (2004-05-01), Goldberg et al.
patent: 6816111 (2004-11-01), Krasner
patent: 6907224 (2005-06-01), Younis
patent: 7050787 (2006-05-01), Caci
patent: 7149197 (2006-12-01), Garahi et al.
patent: 7277049 (2007-10-01), Korneluk et al.
patent: 2003/0078062 (2003-04-01), Burr
patent: 2005/0074036 (2005-04-01), Gorday et al.
patent: WO02/065669 (2002-08-01), None
patent: WO02/065669 (2002-08-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for providing reference frequency... 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 providing reference frequency..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for providing reference frequency... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4129421

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.