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1. 发明申请

US20130241705A1 BATTERY ASSISTED RFID COMMAND SET AND INTERFERENCE CONTROL 审中-公开
标题翻译：电池辅助RFID命令集和干扰控制
公开(公告)号：US20130241705A1
公开(公告)日：2013-09-19
申请号：US13859674
申请日：2013-04-09
申请人： INTELLEFLEX CORPORATION
发明人： Alfonso Rodriguez , Farron Dacus , Johannes Albertus van Nierkerk
IPC分类号： G06K7/10
CPC分类号： G06K7/10009 , H04Q9/00 , H04Q2209/47 , H04Q2209/75 , H04Q2209/88
摘要： Specialized battery assisted command set design methods are disclosed that provide for interference rejection using highly sensitive but relatively broadband RFID tags. The command set design also supports RFID system RF power control for further interference control. The command set design also allows for convenient expansion to active transmitters and receivers in tags operating within the same system. Embodiments of the present invention provide RFID systems having battery-assisted, Semi-Passive RFID tags that operate with sensitive transistor based square law tag receivers utilizing a plurality of tag receiver dynamic range states. Additional enhancement attained via power leveling methods that optimize the amount of transmitted power and interference from a reader in relation to the sensitivity of the RFID tags, their ranges from the reader, and the unique physics of the backscatter RFID radio link.
摘要翻译：公开了专门的电池辅助命令集设计方法，其提供使用高度灵敏但相对宽的RFID标签的干扰抑制。命令集设计还支持RFID系统RF功率控制，进一步进行干扰控制。命令集设计还允许在同一系统内操作的标签中方便地扩展到主动发射机和接收机。本发明的实施例提供具有电池辅助的半无源RFID标签的RFID系统，其利用多个标签接收器动态范围状态使用基于灵敏晶体管的平方律标签接收器进行操作。通过功率调整方法获得的附加增强，其优化与RFID标签的灵敏度相关的发送功率和干扰量，读取器的范围以及反向散射RFID无线电链路的独特物理性能。

2. 发明授权

US08952788B1 Battery assisted RFID system RF power control and interference mitigation methods 有权
标题翻译：电池辅助RFID系统RF功率控制和干扰减轻方法
公开(公告)号：US08952788B1
公开(公告)日：2015-02-10
申请号：US13776504
申请日：2013-02-25
申请人： Intelleflex Corporation
发明人： Farron Dacus , Johannes Albertus van Niekerk , Alfonso Rodriguez
IPC分类号： H04Q5/22 , G06K19/07
CPC分类号： G06K19/0701 , G06K7/10039 , G06K19/0715 , H04Q2213/13095
摘要： A method for controlling RF power within an RFID system according to one embodiment includes returning a first set of RFID tags that were successfully accessed at a first reader forward mode power level to a hibernate state; initiating a timer operation in each of the RFID tags within the first set of RFID tags, the timer operation defining a period of time; and preventing the first set of RFID tags from responding to an activation command at a second reader forward power level during the period of time, the second reader forward power level being higher than the first reader forward power level; and wherein a flag state stored in each of the RFID tags within the first set of RFID tags indicates whether the timer operation is active to prevent undesired activation at the second reader forward power level.
摘要翻译：根据一个实施例的用于控制RFID系统内的RF功率的方法包括：将在第一读取器前进模式功率电平成功访问的第一组RFID标签返回到休眠状态; 在第一组RFID标签内的每个RFID标签中启动定时器操作，定时器操作定义一段时间; 以及在所述时段期间防止所述第一组RFID标签在第二读取器正向功率级别响应于激活命令，所述第二读取器正向功率电平高于所述第一读取器正向功率电平; 并且其中存储在第一组RFID标签内的每个RFID标签中的标志状态指示定时器操作是否有效以防止在第二读取器正向功率级别的不期望的激活。

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