Abstract: A vehicle entry control system utilizing electrically operated deadbolts, actuated in response to the code signal of a remote control transmitter, which provide positive protection against the various mechanical techniques used to defeat conventional vehicle door locks. The system uses electrical linear actuators to position the deadbolts, a door interlocked switching circuit, with the deadbolts positioned to allow the mechanical release of the deadbolts in the event of a malfunction, but to accomplish this requires the facilities of a service shop and an amount of time and labor that would be prohibitive for a thief.

Abstract: The Code Key is substantially the same size and shape as a conventional key with cuts and slopes that actuate pin tumblers as in a conventional lock. However, instead of the tumblers being aligned by the key to permit mechanical rotation of the lock cylinder, the tumblers close selected sealed switches to create an electrical digital code. This code is compared to a preset code and upon matching of the two codes electrical unlocking and circuit enabling takes place. The unit into which the Code Key is inserted has the approximate shape, and outwardly appears the same, as a conventional lock. This unit, which can be referred to as a translator, has no mechanical connection to the door latch or circuit controls and thus no mechanical actions by an intruder can open the door or otherwise defeat the system.

Abstract: A recorded music enhancement system (RMES) utilizing a recording media such as audio tape or compact disc with a separate track for a control waveform or digital code which controls secondary stimuli, such as pulsing lights, so that they pulse in time with the music, or are otherwise coordinated with the music in some artistic arrangement. This system has a triac to switch the power on and off to the lights or other secondary stimuli, and includes a tone or digital code detector which receives the input waveform from the extra track on the recording medium and operates the triac as a function of the input waveform, in essence causing lights or other stimuli to reproduce the rhythm variations of the music as it is played from the tape or other recording medium.