PASSIVE OPTICAL IDENTIFICATION SYSTEM

摘要

The electronic security system comprises two sets of transmitters and receivers. A first transmitter generates an energy carrying signal for a first receiver in communication with the first transmitter. A memory unit is at least partially powered by the energy carrying signal received by the first receiver. The memory unit stores a key code and a second transmitter in communication with the memory unit generates a key code carrying signal. A second receiver in communication with the second transmitter receives the key code carrying signal. The energy carrying signal is of a different frequency than the key code carrying signal to permit simultaneous transmission of both signals for faster transmission and increased security of the system. Ultimately, an evaluation unit in communication with the second receiver compares the key code with an unlocking code to determine if the key code matches the unlocking code.