Vehicle operator security system

An operator actuated security system for a motor vehicle having a door with lock means, power means to unlock the lock, a light effective to illuminate at least a part of the vehicle and an alarm effective when energized to produce a sensible effect outside the vehicle, comprising, in combination:

• a portable infrared radiation generator including means actuatable to generate a directed series of infrared radiation pulses comprising a first digital code and means separately actuatable to generate a directed series of infrared radiation pulses comprising a second digital code, the first and second digital codes having a series of identity bits comprising a predetermined identity code substantially unique to the vehicle and common to each of the first and second digital codes and one or more operation bits comprising an operation code being different in each of the first and second digital codes;
• means on the vehicle effective to store the predetermined identity code and receive the radiation from the generator and including means effective to decode the series of identity bits of the received pulses, compare them, bit by bit, with the stored predetermined identity code and signal identity therebetween;
• and
• means on the vehicle responsive to said signal of identity to decode the operation bits and effective to unlock the door and energize the light in response to the operation bits of the first digital code and to actuate the alarm in response to the operation bits of the second digital code.

An operator actuated security system for a motor vehicle having a door with lock means and power unlock means, power means to unlock the lock, a light effective to illuminate at least part of the vehicle and an alarm effective when energized to produce a sensible effect outside the vehicle, comprising in combination:

• a portable infrared radiation generator effective on one manual actuation to generate a series of pulses of infrared radiation in accordance with a first predetermined digital code and on another manual actuation to generate a series of pulses of infrared radiation in accordance with a second predetermined digital code;
• means on the vehicle effective to receive the radiation from said generator, said means including a photodiode connected in parallel with an inductor and in series with a capacitor across the inputs of an amplifier, said photodiode being thus connected for operation in the photovoltaic mode for reception of the radiation in the strong background radiation of daylight as well as in darkness;
• and
• means responsive to the received first digital code to actuate the power door unlock means and light and further responsive to the received second digital code to actuate the alarm.