Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2006-11-21
2006-11-21
Vuong, Quochien B. (Department: 2684)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S115100, C455S259000
Reexamination Certificate
active
07139530
ABSTRACT:
A method and apparatus for calibrating a reference oscillator and use of a calibrated reference oscillator is disclosed. To gain cost reduction advantages, a less accurate reference oscillator is utilized in a wireless communication device. The cost benefit is gained at the expense of reference oscillator accuracy in that its inability to generate a signal with a highly accurate reference frequency inhibits acquisition of a carrier or pilot signal. To compensate, a correction factor is generated by minimizing the difference between the reference oscillator signal and a signal of known frequency, such as an external reference signal. Access to the reference oscillator signal, or a signal related thereto, may be gained via the communication device antenna or a test port. The correction factor may be stored in the wireless communication device for use in conjunction with the reference oscillator to thereby generate the highly accurate reference signal at the reference frequency.
REFERENCES:
patent: 4353015 (1982-10-01), Krampe et al.
patent: 4504976 (1985-03-01), Beaudet
patent: 4546328 (1985-10-01), Smith et al.
patent: 5151703 (1992-09-01), Roos
patent: 5262957 (1993-11-01), Hearn
patent: 5537145 (1996-07-01), Miseli
patent: 5740525 (1998-04-01), Spears
patent: 5818305 (1998-10-01), Jeon
patent: 6427068 (2002-07-01), Suominen
patent: 6463266 (2002-10-01), Shohara
patent: 6628923 (2003-09-01), Eriksson
patent: 2002/0013835 (2002-01-01), Umezu et al.
patent: 2002/0122662 (2002-09-01), Hsieh
patent: 2002/0173284 (2002-11-01), Forrester
Kyocera Wireless Corp.
Rego Dominic E.
Vuong Quochien B.
LandOfFree
Method and apparatus for calibrating a reference oscillator 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 calibrating a reference oscillator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for calibrating a reference oscillator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3635721