Communications: electrical – Continuously variable indicating – With meter reading
Patent
1998-06-18
2000-11-28
Horabik, Michael
Communications: electrical
Continuously variable indicating
With meter reading
34082569, 34082572, G06F 704
Patent
active
061541451
ABSTRACT:
A system for effecting closure of one or more vehicle windows 30 comprises a portable transmitter unit 14 and a body control unit 12 which can communicate via an alternating magnetic field produced and detected by a pair of conducting coils 16a, 16b, and via a radio frequency transmitter 24 and receiver 22. On transmission of a R.F. closure request signal from the transmitter unit 14, a confirmation request signal is sent by the body control unit 12 via the magnetic link. The confirmation request signal is repeated during closure of the window. The transmission unit responds to each confirmation request signal by transmitting a R.F. confirmation signal, receipt of which enables raising of the window to be initiated or continued. Closure of the window is only initiated if the transmitter unit 14 is within the relatively short range of the magnetic link, and only continues while it remains within range. This reduces the danger of a person becoming trapped by the closing window without the operator of the transmitter unit realising.
REFERENCES:
patent: 5568516 (1996-10-01), Strohallen et al.
patent: 5600323 (1997-02-01), Boschini
patent: 5723911 (1998-03-01), Glehr
patent: 5974101 (1999-10-01), Nago
Horabik Michael
Rover Group Limited
Shimizu M.
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