Patent ID: 9558140
Date: 2017-01-31
CPC Classifications: G06F,H04L

Claim:
1. A method for addressing each of the addressable participants of a bus system, the bus system comprising a control unit, a bus coupled to the control unit, and a plurality of addressable participants connected to the bus, the method comprising: a) pre-selecting at least a first number of addressable participants, the pre-selection comprising: feeding by each of the addressable participants not addressed so far of a pre-selection current, wherein all pre-selection currents flow through the bus towards the control unit, measuring of the pre-selection current flowing through the bus by each of these participants, and pre-selecting those participants that measure a pre-selection current lower than a first threshold; b) selecting from the pre-selected participants a second number of addressable participants, the second number being at least one, the selection comprising: feeding by each of the pre-selected participants of a selection current, wherein all selection currents flow through the bus towards the control unit; measuring by each of the pre-selected participants of the selection current flowing through the bus; selecting the second number of participants based on at least a second threshold, different from the first threshold; c) assigning a second number of addresses to each of the participants selected in step b); d) repeating steps a) to c) without the participants already being addressed, until all addressable participants are addressed; wherein the pre-selection current fed by each addressable participant is generated by a first current source providing a current substantially independent of the supply voltage.