Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Reexamination Certificate
2005-06-14
2005-06-14
Vo, Nguyen T. (Department: 2685)
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
C455S260000, C375S355000
Reexamination Certificate
active
06907233
ABSTRACT:
Frequency correction of a radio module. Multiple samples of frequency data are taken during a quiescent portion of the base station transmission, to estimate the amount of frequency correction needed. An embodiment applies the frequency data to a median filter to eliminate invalid data. Next, a new reference frequency is applied to a radio transceiver in the radio module to provide the frequency correction. If the frequency was corrected by greater than a pre-determined amount, the process performs a large shift frequency correction, including verifying that the first frequency correction was satisfactory and verifying that the radio transceiver is able to receive data after the frequency correction has been performed. If the frequency was corrected by smaller than a pre-determined amount, the process performs a small shift frequency correction, including updating a total of all frequency corrections made since a stored reference frequency was updated.
REFERENCES:
patent: 5233632 (1993-08-01), Baum et al.
patent: 5740525 (1998-04-01), Spears
patent: 5940744 (1999-08-01), Uda
Brown John
Johnson Kenneth
Vertatschitsch Edward
Le Nhan T.
Palm Inc.
Vo Nguyen T.
Wagner , Murabito & Hao LLP
LandOfFree
Method for performing a frequency correction of a wireless... 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 for performing a frequency correction of a wireless..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for performing a frequency correction of a wireless... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3521821