Abstract:
A vehicle includes a rechargeable battery (A) having positive and negative terminals (18, 20). A wiring system (B) connects the battery with various electrical devices of the automobile including a starter motor (92). An access control circuit (C) selectively controls the passage of electric power from the battery to the wiring system. The access control circuit includes a current limiting circuit (70) for limiting the passage of current to a first current level which is insufficient to operate the starter motor and a high level current passing circuit (60) for passing current at a second level which is sufficiently high to operate the starter motor. A current level selection circuit (80) selectively enables the current limiting circuit and the high level current passing circuit to pass current from the battery to the electrical wiring system at one of the first and second levels. In this manner, when limited current is passed to the wiring system, substantially all vehicular electric devices operate normally. However, because the starter motor receives insufficient current to operate normally, the battery will appear low or dead to one attempting to start the car without causing the current level selection circuit to enable the high level current passing means to pass current to the starting motor. The access control circuit may be disposed within the battery (FIG. 1), be attached to at least one battery terminal (FIGS. 2 and 3), or be otherwise connected between the battery and the starter motor.
Abstract:
A system for monitoring and controlling an area comprising a controller for controlling system operational functions; at least one remote-control transmitter for transmitting system commands to the controller in a code word having a fixed word and a hopping word therein; the fixed word comprising at least one fixed data bit and the hopping word comprising at least one changing data bit, wherein the hopping word changes its binary value from transmission to transmission of the system commands; and, means for scrambling bits of the fixed word and bits of the hopping word within the code word.
Abstract:
A battery adapter for charging a spare cellular telephone battery in a vehicle charging unit, the adapter comprising a charging unit, having first power supply connections positioned for electrical coupling with corresponding second connections of a battery for use with a cellular telephone and a clip having an anchored biased pivot end and a hook end, wherein the hook end is resiliently movable about the pivot end for urging the hook end into a corresponding cavity of the cellular telephone for retainment of the cellular telephone in the charging unit and for urging the first and second power supply connections together to maintain electrical coupling thereof. The adapter is adapted to engage with the battery, for charging it while the cellular telephone is outside the charging unit and the adapter having a cavity therein positioned for receipt of the hook end of the clip for retaining it and the battery in the charging unit and to provide electrical contact between the first and second power supply connections.
Abstract:
A method of indicating the threat level of an incoming shock to an electronically secured vehicle and eliminating spurious signals developed from the interaction of EMF and RF energy fields with the shock sensor including the steps of sensing a shock delivered to the vehicle indicative of an attempted intrusion, generating an electric signal the strength of which is proportional to the intensity of the shock, analyzing the signal to determine if it is of a low, generally non-threatening intensity or a higher, generally security-threatening intensity, ignoring the first 5 milliseconds of the signal produced by the shock sensor, ignoring all signals that do not disappear and later reappear, and producing either a first pulse representing a low intensity signal, or separate first and second pulses representing a signal containing both low intensity and higher intensity components.