公开(公告)号：US20040012486A1

公开(公告)日：2004-01-22

申请号：US10453454

申请日：2003-06-03

Applicant: STMicroelectronics SA

Inventor： Christophe Mani

IPC: H04Q005/22

CPC classification number: G06K7/10029 ,  G06K7/0008

Abstract: An anti-collision method to identify and select contactless electronic modules (MDL) by a terminal is provided. A module may generate a random identification number prior to a communication, and respond to a general or complementary identification request on a time slot that varies according to its identification number. A non-selected module may generate a new random identification number when it receives a complementary identification request. Thus, the time slot of a non-selected module provided in response to a complementary identification request is not statistically the same as its time slot in response to a previous identification request, and it varies according to its identification number (ID).

Abstract translation: 提供了一种通过终端识别和选择非接触电子模块（MDL）的防碰撞方法。 模块可以在通信之前生成随机标识号，并且在根据其标识号变化的时隙上响应一般或补充的标识请求。 未选择的模块可以在接收到补充标识请求时产生新的随机标识号。 因此，响应于补充识别请求而提供的未选择模块的时隙在响应于先前的识别请求时与其时隙在统计上不相同，并且根据其标识号（ID）而变化。