Patent ID: 7977811

Claim:
A method of transmission from electronic housings ( 6 - 9 ), each one of which is mounted on one of the wheels ( 2 - 5 ) of a vehicle ( 1 ), to a central unit ( 11 ) mounted on said vehicle, of signals representative of operational parameters of each wheel ( 2 - 5 ) and furthermore comprising an identification code (ID) of the latter, said transmission method consisting in using, for the transmission of each signal, a spread spectrum technique, and being characterized in that it consists in an preliminary phase, in allocating: on the one hand, to each electronic housing ( 6 - 9 ) and to the central unit ( 11 ), a first common generic orthogonal spread code (Cg) identical for all of said electronic housings ( 6 - 9 ) and the central unit ( 11 ), and, on the other hand, to each electronic housing ( 6 - 9 ), a second orthogonal spread code (Ci) specific to said electronic housing, in using an initializing procedure consisting in causing the transmission by each electronic housing ( 6 - 9 ) of a spread signal (e) on the basis of the first common generic spread code (Cg), incorporating the second specific orthogonal spread code (Ci) and the identification code (ID) of said electronic housing, then in using a transmission procedure consisting in causing the transmission by each electronic housing ( 6 - 9 ) of a spread signal (e) on the basis of the second specific spread code (Ci) of said electronic housing.