![Method, System, and apparatus for communicating with a RFID tag population](/abs-image/US/2002/10/17/US20020149483A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: Method, System, and apparatus for communicating with a RFID tag population
- 专利标题(中):用于与RFID标签群进行通信的方法,系统和装置
- 申请号:US10073000 申请日:2002-02-12
- 公开(公告)号:US20020149483A1 公开(公告)日:2002-10-17
- 发明人: Wayne E. Shanks , William R. Bandy , Kevin J. Powell , Michael R. Arneson
- 申请人: Matrics, Inc.
- 申请人地址: null
- 专利权人: Matrics, Inc.
- 当前专利权人: Matrics, Inc.
- 当前专利权人地址: null
- 主分类号: G08B013/14
- IPC分类号: G08B013/14
摘要:
A method, system, and apparatus for communicating with a radio frequency identification (RFID) tag population that includes one or more tags are described. The tags are interrogated by a reader which may be located in a network of readers. The reader interrogates the tags by transmitting data symbols to the tags. Tags respond to the reader with backscatter symbols. Bit patterns, such as identification numbers stored in the tags, are collected from the plurality of tags without collisions. Collisions are avoided because the backscatter symbols transmitted by the tags use different characteristics to represent different data bits. For example, a first backscatter symbol frequency is used by the tag to represent a null0null bit, and a second backscatter symbol frequency is used by the tag to represent a null1null bit.
摘要(中):
描述了与包括一个或多个标签的射频识别(RFID)标签群进行通信的方法,系统和装置。 这些标签由可能位于读取器网络中的读取器询问。 读者通过向标签发送数据符号来询问标签。 标签用反向散射符号回应读者。 诸如标签中存储的识别号码的位模式从多个标签中收集而不发生冲突。 避免了碰撞,因为标签发送的反向散射符号使用不同的特性来表示不同的数据位。 例如,标签使用第一反向散射符号频率来表示“0”比特,并且标签使用第二反向散射符号频率来表示“1”比特。