Coded data generation or conversion – Phase or time of phase change – Synchro or resolver signal
Reexamination Certificate
2008-08-28
2010-10-19
Nguyen, Khai M (Department: 2819)
Coded data generation or conversion
Phase or time of phase change
Synchro or resolver signal
C341S111000, C341S112000
Reexamination Certificate
active
07817070
ABSTRACT:
A signal conditioning circuit time share multiplexes anti-aliasing filters and an A/D converter. A plurality of first tier multiplexers each time share multiplex one of a plurality of antialiasing filters between a plurality of AC or baseband input signals from a plurality of sensors. A second tier multiplexer selects its inputs from the outputs of the first tier multiplexers. The output of the second tier multiplexer feeds a high speed A/D converter. Thus, the A/D converter is time share multiplexed by the second tier multiplexer. In this manner, a plurality of sensors can share a single A/D converter. After allowing a settling time for the multiplexers and antialiasing filters, a plurality of samples of the input signals are taken, such as for one period. The samples of each AC input signal are multiplied by a sine vector and a cosine vector. The product vectors are then each averaged and the root mean square of the two averages yields the magnitude of the input signal. Mechanical angle of the input signal can be determined based upon the sign of the sine and cosine product vector averages.
REFERENCES:
patent: 3516084 (1970-06-01), Sacks, Jr. et al.
patent: 3976869 (1976-08-01), Stella et al.
patent: 4062005 (1977-12-01), Freed et al.
patent: 4099245 (1978-07-01), Maysonett
patent: 4542336 (1985-09-01), Powell
patent: 4594540 (1986-06-01), Currie et al.
patent: 4652821 (1987-03-01), Kreft
patent: 4739189 (1988-04-01), Kellogg
patent: 5034743 (1991-07-01), Deppe et al.
patent: 5134397 (1992-07-01), Eyerly et al.
patent: 5168222 (1992-12-01), Volsin et al.
patent: 5241268 (1993-08-01), Lee
patent: 5260650 (1993-11-01), Schwesig et al.
patent: 5600576 (1997-02-01), Broadwater et al.
patent: 6014022 (2000-01-01), Demma et al.
patent: 6084376 (2000-07-01), Piedl et al.
patent: 6331759 (2001-12-01), Atmur
patent: 7149654 (2006-12-01), Ramsdale et al.
patent: 7403580 (2008-07-01), Ishii et al.
patent: 2004/0027118 (2004-02-01), Lenz et al.
patent: 2004/0027263 (2004-02-01), Pailleur et al.
patent: 05-068321 (1993-03-01), None
patent: 6-338798 (1994-12-01), None
patent: 7-25681 (1995-05-01), None
patent: 2000-037031 (2000-02-01), None
patent: 2006-60721 (2006-03-01), None
Japanese Office Action for JP2007-200306 mailed on Apr. 27, 2010.
Carlson & Gaskey & Olds
Hamilton Sundstrand Corporation
Nguyen Khai M
LandOfFree
Method and apparatus for sampling and converting a signal 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 sampling and converting a signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for sampling and converting a signal will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4150918