Patent ID: 7135963
Filing Date: 2006-11-14
Classification: B60R,G07C

Abstract:
1. A process for locating a tag for a hands-free system of a motor vehicle comprising the steps of: in a system comprising a tag ( transmitting, from the first group of antennas to the tag, a first inquiry signal ( transmitting, from the tag to the first group of antennas, a first response ( transmitting, from second group of antennas to the tag, a second inquiry signal ( transmitting, from the tag to the second group of antennas, i) a second response ( determining a location of the tag to be i) in the first antenna coverage zone when the first response ( ii) in the second antenna coverage zone when the second response ( iii) in the third antenna coverage zone when the second response is received by the second antennas and the second response comprises the stored record of the first response.