Communications: electrical – Land vehicle alarms or indicators – Of burglary or unauthorized use
Reexamination Certificate
2007-08-20
2010-06-01
Patel, Rajnikant B (Department: 2838)
Communications: electrical
Land vehicle alarms or indicators
Of burglary or unauthorized use
C307S010100
Reexamination Certificate
active
07728717
ABSTRACT:
A switching regulator for controlling transmit antennas of variable impedance, particularly transmit antennas of a keyless access authorization system in or for a vehicle, having an input terminal into which an antenna potential applied or appliable at the transmit antenna may be coupled, and having a control circuit designed to generate a compensation signal as a controlled variable for adapting the antenna potential to an actual output impedance and to establish a slope of the compensation signal depending on the actual antenna potential. The invention relates furthermore to a transceiver circuit with such a switching regulator and to a keyless access control system in or for a vehicle.
REFERENCES:
patent: 4683554 (1987-07-01), Lockwood et al.
patent: 4719460 (1988-01-01), Takeuchi et al.
patent: 4823316 (1989-04-01), Riva
patent: 4885674 (1989-12-01), Varga et al.
patent: 4975820 (1990-12-01), Szepesi
patent: 5440159 (1995-08-01), Larsen et al.
patent: 5565371 (1996-10-01), Gill
patent: 5838074 (1998-11-01), Loeffler et al.
patent: 5886376 (1999-03-01), Acovic et al.
patent: 5903452 (1999-05-01), Yang
patent: 5917222 (1999-06-01), Smayling et al.
patent: 6522116 (2003-02-01), Jordan
patent: 6576950 (2003-06-01), Cappelletti et al.
patent: 6596587 (2003-07-01), Mehta
patent: 6696723 (2004-02-01), Hartmann et al.
patent: 6993314 (2006-01-01), Lim et al.
patent: 7167005 (2007-01-01), Mercer
patent: 2003/0137005 (2003-07-01), Mitros et al.
patent: 2005/0236659 (2005-10-01), Koh et al.
patent: 2007/0045710 (2007-03-01), Riekels et al.
patent: 19546171 (1996-11-01), None
patent: 19846211 (2000-04-01), None
patent: 0268315 (1988-05-01), None
patent: 0493640 (1992-07-01), None
patent: 1091408 (2001-04-01), None
patent: 1760786 (2007-03-01), None
patent: 2006033958 (2006-02-01), None
Atmel Automotive GmbH
Muncy Geissler Olds & Lowe, PLLC
Patel Rajnikant B
LandOfFree
Switching regulator, transceiver circuit, and keyless access... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Switching regulator, transceiver circuit, and keyless access..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Switching regulator, transceiver circuit, and keyless access... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4237181