ELECTRONIC LOCKING DEVICE

摘要

An electronic locking device having a memory circuit for memorizing intrinsic codes and a digital watch to indicate variable codes with time. The input-code for unlocking an object is given by calculation of the intrinsic figure and the variable figure. In the control unit, the variable figure is deducted from the input-code, and the remainder is identified if it is in agreement with the intrinsic figure. Unlocking is made only when the remainder agrees with the intrinsic figure.