Patent ID: 7295526

Claim:
A method of wireless transmission of information between at least two units consisting of two computer stations or two personalised portable objects or a personalised portable object and a computer station, the portable object and the station each having signal transmitting and/or receiving means for bi-directional transmission of information frames modulated onto a carrier selected from a plurality of available transmission carriers, the transmitting and/or receiving means being switched alternately, when they are activated, to a signal transmitting mode and a signal receiving mode, the portable object including a data management unit connected to the transmitting and/or receiving means to manage received or transmitted information frames and a memory for storing data which is connected to the data management unit, which method includes the following steps: transmitting from one unit to the other unit an information frame modulated onto the selected carrier and including a synchronisation field, which consists of a particular number of bytes of identical value, and an information packet; counting bytes in the synchronisation field of the received frame, and comparing the number of bytes counted with a particular threshold number to transmit an indication for correcting the number of bytes in the synchronisation field of the next frame to be received.