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Abstract

Asynchronous communication protocol for electronic keys of security locks and systems, characterized by the use of a same and only channel to transmit the time and the data (bits), that single channel has two states: one normal state of rest and another active state when communication occurs and through the use of an active pulse to indicate the start of a bit; using an active pulse to indicate the transmission of a 1 bit, and the use of a resting state for the transmission of a 0 bit; the active pulse consists of the maintenance of the communication channel in an active state during a brief period of time and the use of a resting state which permits the extraction of energy from the communication channel and an active state which does not impede the maintenance of a certain level of energy which is sufficient for the proper functioning of the devices connected to the communication channel.

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First Claim