(JP8332841-A)      The vehicle has a wireless controller that allows the doors and other units, e.g. engine, to be activated remotely. The control system has a receiver (1) mounted in or near the instrumentation panel to achieve good reception. The vehicle control circuits (2) are mounted elsewhere. The receiver unit has its own power supply (16) and a power control circuit (13). When the receiver is active it demodulates (12) a signal and also measures (15) the received carrier strength.    The vehicle controller is periodically activated and enables the receiver power until a suitable security/command code is recognised. If the signal is poor the power is disabled.    ADVANTAGE -   Reduces the power required by the receiver circuit by selective enabling and provides a compact receiver.    (US5767588-A)      The vehicle has a wireless controller that allows the doors and other units, e.g. engine, to be activated remotely. The control system has a receiver (1) mounted in or near the instrumentation panel to achieve good reception. The vehicle control circuits (2) are mounted elsewhere. The receiver unit has its own power supply (16) and a power control circuit (13). When the receiver is active it demodulates (12) a signal and also measures (15) the received carrier strength.    The vehicle controller is periodically activated and enables the receiver power until a suitable security/command code is recognised. If the signal is poor the power is disabled.    ADVANTAGE -   Reduces the power required by the receiver circuit by selective enabling and provides a compact receiver.    (EP747266-B1)      The vehicle has a wireless controller that allows the doors and other units, e.g. engine, to be activated remotely. The control system has a receiver (1) mounted in or near the instrumentation panel to achieve good reception. The vehicle control circuits (2) are mounted elsewhere. The receiver unit has its own power supply (16) and a power control circuit (13). When the receiver is active it demodulates (12) a signal and also measures (15) the received carrier strength.    The vehicle controller is periodically activated and enables the receiver power until a suitable security/command code is recognised. If the signal is poor the power is disabled.    ADVANTAGE -   Reduces the power required by the receiver circuit by selective enabling and provides a compact receiver.