公开(公告)号：US20040140884A1

公开(公告)日：2004-07-22

申请号：US10754259

申请日：2004-01-09

Applicant: Microchip Technology Inc.

Inventor： William F. Gallagher III ,  Ronald Salesky ,  Shinichiro Inui ,  Riccardo Benedetti ,  Samuel Alexander ,  Lee R. Furey ,  Youbok Lee

IPC: H04Q005/22

CPC classification number: G06K7/10039 ,  G06K7/0008

Abstract: Arbitration of multiple transponders, such as RFID tags, occurs in an interrogation field. The arbitration process is custom-tailored for individual applications, under software control, by the transponder reader or tag reader. Different wake-up slots are calculated for each tag during successive transmission cycles based upon the tag ID and the transmission cycle number. The tag reader may also send a special command to a tag to read its data and cause the tag to become decoupled from the environment. The tags may be selectively placed in either a tag-talk-first mode or a reader-talk-first mode. Furthermore, the tag reader may send a special fast read command to the tag which includes a read request and at least one parameter of the read request.

Abstract translation: 多个转发器（如RFID标签）的仲裁发生在询问领域。 仲裁过程是由应答程序读取器或标签读取器在软件控制下针对各个应用程序进行定制的。 基于标签ID和传输周期数，在连续传输周期期间针对每个标签计算不同的唤醒时隙。 标签读取器还可以向标签发送特殊命令以读取其数据并使标签与环境分离。 标签可以选择性地放置在标签通话第一模式或读取器通话第一模式中。 此外，标签读取器可以向包括读取请求和读取请求的至少一个参数的标签发送特殊的快速读取命令。