Pulse or digital communications – Receivers – Automatic frequency control
Reexamination Certificate
2011-05-17
2011-05-17
Tran, Khanh C (Department: 2611)
Pulse or digital communications
Receivers
Automatic frequency control
C455S266000
Reexamination Certificate
active
07945004
ABSTRACT:
A method and apparatus for detecting a frequency band and mode of operation using recursive sampling and narrowing down is disclosed. The method comprises sampling (215) by a multi-mode wireless communication device, a broad operational frequency spectrum at a first sampling rate to produce a first set of discrete signal samples. Then, the wireless communication device compares (230, 240) at least one of the energy graphs of the first set of discrete signal samples with at least one protocol-specific signature to confirm (245), if an approximate match is found. When one or more approximate matches are found, the wireless communication device narrows down (250) the broad frequency spectrum to a reduced set of frequency band(s) that correspond to the matched protocol-specific signature(s). Then the steps of sampling (215), comparing (230, 240), confirming (245), and narrowing down (250) are recursively followed till a frequency band and mode of operation is confirmed.
REFERENCES:
patent: 5555096 (1996-09-01), Yoo
patent: 5794147 (1998-08-01), Huang
patent: 6175561 (2001-01-01), Storm et al.
patent: 6553229 (2003-04-01), Dent
patent: 6590833 (2003-07-01), Teller
patent: 7489745 (2009-02-01), Fudge
patent: 7496158 (2009-02-01), Fudge et al.
patent: 2002/0041639 (2002-04-01), Krupezevic et al.
patent: 2003/0054783 (2003-03-01), Mason et al.
patent: 2005/0192055 (2005-09-01), Niemela et al.
patent: 2008/0266157 (2008-10-01), Gorin et al.
patent: 2009/0137212 (2009-05-01), Belotserkovsky
patent: 0411207 (1991-02-01), None
patent: 02078204 (2002-10-01), None
Patent Cooperation Treaty, “Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration” for PCT/US2008/085804, Apr. 15, 2009, pp. 1-11.
Barr John R.
Bush Kevin J.
Chance Gregory W.
Storm Brian D.
Chen Sylvia
Motorola Mobility, Inc.
Tran Khanh C
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