Patent ID: 6943664

Claim:
Process for controlling the resynchronization of a remote control with a changing code used with a hands free system comprising at least one badge, a computer, emitting and receiving means provided to permit the computer to communicate with each badge, each badge including a remote control with a changing code, characterized in that it comprises the following steps: detection (step 30 ) of the need for resynchronization between a remote control and the computer following an emission (step 10 ) of this remote control, identification of the badge associated with the desynchronized remote control and memorization in the computer of the fact that the remote control of the identified badge is desynchronized (step 50 ), modification of the message sent by the computer to the badges to include therein a code indicating that a remote control is desynchronized and identifying the corresponding badge, and emission of this modified message (step 70 ), this modified message not changing the operation of the hands free system when it is received by a badge integrating an undesynchronized remote control, reception of the modified message by the badge including the desynchronized remote control, automatic resynchronization (steps 100 and 110 ) between the remote control associated with this badge and the computer, and emission of a response to the message of the computer, reception of the response of the badge by the computer, and erasure of the memory and inverse modification of the messages sent by the computer so as ultimately to emit base messages (step 130 ), wherein the modification of the message (step 50 ) consists in adding to the message a function code indicating that a remote control is desynchronized as well as a code identifying the badge including the remote control to be resynchronized; and wherein the unmodified base message comprises a random challenge code which is included in the modified message and in that the code identifying the badge is included in this challenge code of the modified message.