Appeal No. 2002-1281
Application No. 08/857,711
security system. Accordingly, only one of the two transponders
should be in communication with the controller.
Thus, the invention provides the second transponder for
selectively receiving the transmission from the controller via
the first coil, and transmitting to the controller an authorized
code via the second and third coils, when the system remotely
starts the vehicle and the key, with its first transponder are
not about the ignition switch.
Representative independent claim 1 is reproduced as follows:
1. A vehicle starting system comprising a remote starting
system that is co-operable with a passive anti theft security
system, wherein the security system comprises a first coil
connected to a passive anti theft security system controller for
transmitting a first signal to a first transponder having a third
coil and a first code therein, said first transponder being
responsive to said first signal to transmit said first code to
said first coil, and wherein the remote starting system
comprises:
(a) a second selectively operable transponder having a
second code and a fourth coil with two terminal ends, said fourth
coil being wound about said second transponder; and
(b) a relay that shorts said terminal ends of said fourth
coil to disable said second transponder and prevent transmission
of said second code to said controller when said passive anti-
theft security system is in operation, and that selectively opens
said terminal ends of said fourth coil to enable said second
transponder and allow transmission of said second code to said
controller when said remote starting system is in operation.
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