Patent ID: 6661333
Filing Date: 2003-12-09
Classification: G07C

Abstract:
Device for controlling a locking system, of the type including a bolt intended to restrict access to a confined space and including:an electric power supply, a clock, formed of a time base and a counter, wherein the counter comprises an incrementation input connected to the time base to be incremented and an output, control means, for entering commands and data, particularly with the purpose of controlling the opening of the bolt, and an electronic circuit including a microprocessor connected to the output of the clock and to the control means from which it obtains orders and information, and a memory wherein are recorded programs to drive the microprocessor and to record information regarding the functioning of the device, wherein the incrementation input is exclusively connected to the time base in such a way that the state of the counter is only incremented by the time base, and a computer including an internal clock in which the current date is defined, and arranged: to be connected to the microprocessor, to send the audit command code to the microprocessor, to record the dates of said memory and of said internal clock, to define a correction offset obtained by the difference between the two dates, and to apply the offset to each of the dates relating to the events reported during the audit.