Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Aeronautical vehicle
Reexamination Certificate
2005-09-27
2008-08-05
Black, Thomas G. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Aeronautical vehicle
C342S411000, C342S413000
Reexamination Certificate
active
07409272
ABSTRACT:
A method of removing undesired signals in an aviation guidance system may include receiving at least one first desired signal having a first frequency of amplitude modulation, receiving at least one second desired signal having a second frequency of amplitude modulation, and receiving at least one undesired signal having any frequency including a frequency that is substantially the same as or a subharmonic of at least one of the first and second desired signals. The first and second frequencies of amplitude modulation are phase synchronous, and the undesired signals are non-synchronous with at least one of the first and second desired signals. The method may also include identifying the undesired signals and removing the undesired signals.
REFERENCES:
patent: 3483560 (1969-12-01), Villiers
patent: 3671967 (1972-06-01), Fries
patent: 3675162 (1972-07-01), Owen et al.
patent: 3680118 (1972-07-01), Anthony
patent: 3716863 (1973-02-01), Ghose et al.
patent: 3716864 (1973-02-01), Stover
patent: 3793597 (1974-02-01), Toman
patent: 3808558 (1974-04-01), Toman et al.
patent: 3820115 (1974-06-01), Stone
patent: 3890620 (1975-06-01), Toman et al.
patent: 3900877 (1975-08-01), Kohler
patent: 3918662 (1975-11-01), Vircks et al.
patent: 4012739 (1977-03-01), Hofgen et al.
patent: 4414632 (1983-11-01), Murrell
patent: 4586049 (1986-04-01), Davidson
patent: 4833725 (1989-05-01), Teetor
patent: 5323165 (1994-06-01), Greving et al.
patent: 5323332 (1994-06-01), Smith et al.
patent: 5786773 (1998-07-01), Murphy
patent: 5859878 (1999-01-01), Phillips et al.
patent: 6072994 (2000-06-01), Phillips et al.
patent: 6469654 (2002-10-01), Winner et al.
patent: 2007/0069942 (2007-03-01), Hanneman
EP Search Report, 06121283.3, Mar. 2, 2007.
Black Thomas G.
Chen Shelley
Honeywell International , Inc.
Igrassia, Fisher & Lorenz, P.C.
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