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111. 发明授权

US09213871B1 RFID tag and reader authentication by trusted authority 有权
公开(公告)号：US09213871B1
公开(公告)日：2015-12-15
申请号：US14341504
申请日：2014-07-25
申请人： Impinj, Inc.
发明人： Christopher J. Diorio , Scott A. Cooper
IPC分类号： G06K7/10 , H04L9/08
CPC分类号： G06K7/10009 , G06K7/10297 , H04L9/0816 , H04L9/0819 , H04L2209/24 , H04Q2213/13095
摘要： A Radio Frequency Identification (RFID) reader containing a reader key authenticates an RFID tag containing a tag key by receiving a reader challenge from a verification authority; determining a reader response based at least on the reader challenge and the reader key; sending a first message including at least the reader response but not the reader key to the verification authority; receiving a tag identifier from the tag; challenging the tag with a tag challenge; receiving a tag response based at least on the tag challenge and the tag key but not including the tag key; sending a second message including at least the tag identifier and the tag response to the verification authority; and receiving an electronically-signed reply from the verification authority. The reader validates the verification authority reply by checking the signature. The verification authority may notify a designated party if a response is incorrect.

112. 发明授权

US09189904B1 Exit-code-based RFID loss-prevention system 有权
标题翻译：基于退出代码的RFID丢失防范系统
公开(公告)号：US09189904B1
公开(公告)日：2015-11-17
申请号：US14162745
申请日：2014-01-24
申请人： Impinj, Inc.
发明人： Christopher J. Diorio , Scott A. Cooper , Matthew Robshaw , Tan Mau Wu
IPC分类号： H04Q5/22 , G07C9/00
CPC分类号： G08B13/2454 , G06K7/10366 , G07C9/00007 , G07C9/00111 , H04Q2213/13095
摘要： Methods and systems are described for authorizing an item with an RFID tag to leave a facility. In one embodiment, a mobile device receives or determines an exit code (EC) to write into the tag in response to providing authorizing information. The EC may be based on information stored in the tag such as the tag's item identifier or other tag information (collectively an item identifier or II), a ticket value, other information such as the OC, a mobile identity or location, or any other suitable information. Upon verification of the EC, the tagged item is allowed to leave the facility. In another embodiment, the mobile device stores an item identifier (II) associated with the tag and provides authorizing information. Upon verifying the authorizing information and confirming that the stored II corresponds to the tagged item's II, the tagged item is allowed to leave the facility.
摘要翻译：描述了用于授权具有RFID标签的物品离开设施的方法和系统。在一个实施例中，响应于提供授权信息，移动设备接收或确定退出代码（EC）以写入标签。 EC可以基于标签中存储的信息，例如标签的项目标识符或其他标签信息（统称为项目标识符或II），票据值，诸如OC，移动身份或位置的其他信息或任何其他适合的信息。经EC验证后，允许标记的物品离开设备。在另一个实施例中，移动设备存储与该标签相关联的项目标识符（II）并提供授权信息。在验证授权信息并确认存储的II对应于被标记的项目的II时，允许标记的项目离开设施。

113. 发明授权

US09165170B1 RFID tag dynamically adjusting clock frequency 有权
标题翻译： RFID标签动态调整时钟频率
公开(公告)号：US09165170B1
公开(公告)日：2015-10-20
申请号：US14709331
申请日：2015-05-11
申请人： Impinj, Inc.
发明人： Vadim Gutnik , Scott A. Cooper , John D. Hyde , Theron Stanford
IPC分类号： H04Q5/22 , G06K7/10 , G06K7/016
CPC分类号： G06K7/10207 , G06K7/016 , G06K19/0701 , G06K19/0723 , H04Q2213/13095 , H04Q2213/13214
摘要： An RFID tag is configured to adjust its current clock frequency to conserve tag power while receiving a reader signal and/or backscattering a signal. The tag may determine whether to adjust its current clock frequency based on one or more timing parameters, which may be determined from a reader command and/or from a signal to be backscattered. The counting rate and/or limit of a tag counter and/or the power supplied to a tag component may also be adjusted. The current tag clock frequency may be adjusted during the signal reception/backscattering process and optionally restored once the process is completed.
摘要翻译：配置RFID标签以调整其当前时钟频率以节省标签功率，同时接收读取器信号和/或反向散射信号。标签可以基于一个或多个定时参数来确定是否调整其当前时钟频率，其可以根据读取器命令和/或从要反向散射的信号来确定。还可以调整标签计数器的计数率和/或限制和/或提供给标签部件的功率。可以在信号接收/后向散射过程期间调整当前标签时钟频率，并且可以在处理完成后可选地恢复。

114. 发明授权

US09142881B1 RFID tag circuits with floating differential inputs 有权
标题翻译：具有浮动差分输入的RFID标签电路
公开(公告)号：US09142881B1
公开(公告)日：2015-09-22
申请号：US12483842
申请日：2009-06-12
申请人： Ronald A. Oliver , Harley K. Heinrich , Christopher J. Diorio
发明人： Ronald A. Oliver , Harley K. Heinrich , Christopher J. Diorio
IPC分类号： G08B13/14 , G08C19/12 , G05B11/01 , G08C19/16 , H01Q21/00 , H01Q19/10 , H01Q21/26 , H01Q1/24 , H01Q21/30 , G06K19/07 , G06K19/077 , H01Q1/22
CPC分类号： G06K19/0724 , G06K19/0723 , G06K19/07766 , G06K19/07767 , H01Q1/2225 , H01Q1/248 , H01Q21/30 , H04Q2213/095
摘要： An Integrated Circuit (IC) for an RFID tag and a tag including such an IC are provided where the IC includes at least two rectifiers and two antenna ports for connecting to two respective antennas with at least three of the four antenna terminals not sharing a reference potential of the IC. According to other embodiments, the antenna ports are also electrically isolated from each other.
摘要翻译：提供了用于RFID标签的集成电路（IC）和包括这种IC的标签，其中IC包括至少两个整流器和两个用于连接到两个相应天线的天线端口，四个天线端子中的至少三个不共享参考 IC的潜力。根据其他实施例，天线端口也彼此电隔离。

115. 发明授权

US09129168B1 RFID readers causing tags to backscatter based on challenge 有权
标题翻译：基于挑战的RFID读取器导致标签反向散射
公开(公告)号：US09129168B1
公开(公告)日：2015-09-08
申请号：US14053444
申请日：2013-10-14
申请人： Impinj, Inc.
发明人： Christopher J. Diorio , Scott A. Cooper
IPC分类号： H04Q5/22 , G06K7/10
CPC分类号： G06K7/10009 , G06Q10/087 , G06Q30/0185 , H04L9/3247 , H04L9/3271 , H04L63/0853 , H04L2209/805 , H04W4/80
摘要： RFID reader systems, readers, components, software and methods cause RFID tags to backscatter a combination made from at least portions of a first code and a second code, without transmitting any commands in the interim. The first and/or second codes may include a tag response to a reader challenge. In a number of embodiments, a separate command does not have to be sent for reading the second code along with the first code, thereby saving time in inventorying the tags. Plus, the combination can enable reading tag codes during tag manufacturing that are not otherwise readily available to read in the field. In some embodiments, the combination may further include one or more error-checking codes.
摘要翻译： RFID读取器系统，读取器，组件，软件和方法使RFID标签能够反向散射由至少部分第一代码和第二代码组成的组合，而不会在此期间传送任何命令。第一和/或第二代码可以包括对读取器挑战的标签响应。在多个实施例中，不必发送单独的命令以便与第一代码一起读取第二代码，从而节省了对标签进行库存的时间。此外，该组合可以在标签制造期间读取标签代码，这在现场不能读取。在一些实施例中，该组合可进一步包括一个或多个错误检查码。

116. 发明授权

US09104923B1 Encapsulating commands for RFID tags and RFID readers 有权
标题翻译： RFID标签和RFID阅读器的封装命令
公开(公告)号：US09104923B1
公开(公告)日：2015-08-11
申请号：US14133433
申请日：2013-12-18
申请人： Impinj, Inc.
发明人： Theron Stanford , Christopher J. Diorio , Harley Heinrich
IPC分类号： H04Q5/22 , G06K7/10 , H02J13/00 , G08B13/00 , G06F21/00
CPC分类号： G06K7/10009 , G06K7/10297 , G06K19/0723 , H04L67/34 , H04W4/80 , H04W84/18
摘要： Radio Frequency Identification (RFID) tags may receive one or more encapsulated commands within the payload of an encapsulating command from an RFID reader. An encapsulated command includes at least a command code and an instruction. A tag may store the encapsulated command(s) or the instruction portion of the encapsulated command(s) for later execution. A sequence of encapsulated commands may be contained within one encapsulating command or spread across multiple encapsulating commands. The sequence of encapsulated commands, or the sequence of instructions associated with the encapsulated commands, may form a program. The tag may execute the instructions or program upon receipt, upon a trigger event, serially or in parallel, and/or may modify the instructions or program by adjusting parameters. The tag may later be told by a reader to execute the instructions or program via another command which, in some cases, may be sent prior to tag singulation.
摘要翻译：射频识别（RFID）标签可以从RFID读取器接收封装命令的有效载荷内的一个或多个封装的命令。封装的命令至少包括命令代码和指令。标签可以存储封装的命令或封装命令的指令部分以供稍后执行。封装命令的序列可以包含在一个封装命令中或分散在多个封装命令之间。封装命令的顺序或与封装命令相关联的指令序列可以形成程序。标签可以在接收到触发事件时串行或并行地执行指令或程序，和/或可以通过调整参数来修改指令或程序。稍后可以由读者通过标签来执行指令或程序，该命令在某些情况下可以在标签分割之前被发送。

117. 发明授权

US09031504B1 Interference rejection in RFID tags 有权
标题翻译： RFID标签中的干扰抑制
公开(公告)号：US09031504B1
公开(公告)日：2015-05-12
申请号：US14066521
申请日：2013-10-29
申请人： Impinj, Inc.
发明人： John D. Hyde , Kurt E. Sundstrom
IPC分类号： H04B5/00 , G06K7/10
CPC分类号： G06K7/10029 , G06K19/0707 , G06K19/0723
摘要： RFID tags, tag circuits, and methods are provided that reject at least in part the distortion caused to wireless signals by interference in the environment. When the received RF wave is converted into an unfiltered input (971), a filtered output (972) is generated that does not include an artifact feature deriving from the distortion. The filtered output is used instead of the unfiltered input, which results in tag operation as if there were less interference in the environment, or none at all.
摘要翻译：提供RFID标签，标签电路和方法，其至少部分地通过在环境中的干扰而拒绝对无线信号造成的失真。当接收的RF波被转换成未滤波的输入（971）时，生成不包括从失真导出的伪影特征的滤波输出（972）。使用滤波输出而不是未过滤的输入，这导致标签操作，就好像环境中的干扰较少，或者根本没有。

118. 发明授权

US08941469B1 RFID tag authentication with public-key cryptography 有权
标题翻译：使用公钥加密技术的RFID标签认证
公开(公告)号：US08941469B1
公开(公告)日：2015-01-27
申请号：US13155057
申请日：2011-06-07
申请人： Christopher J. Diorio , Scott A. Cooper
发明人： Christopher J. Diorio , Scott A. Cooper
IPC分类号： H04L29/02 , H04L9/32 , G05B19/18
CPC分类号： G06Q30/0185 , H04L9/3247 , H04L9/3271 , H04L2209/805 , H04W4/80
摘要： An authentication method includes RFID readers authenticating RFID tags using public-key cryptography. A tag manufacturer or other legitimate authority produces a tag private-public key pair and stores the tag private key in externally unreadable tag memory and the tag public key in externally readable tag memory. The authority produces a master private-public key pair and distributes the master public key to readers in the field. The authority generates a tag-specific electronic signature based on at least the tag public key and the master private key and stores this signature in externally readable tag memory. A reader authenticates the tag by retrieving the tag public key and electronic signature from the tag, verifying the authenticity of the tag public key using the master public key and the electronic signature, challenging the tag, receiving a response from the tag to the challenge, and verifying the response using the tag public key.
摘要翻译：认证方法包括使用公开密钥密码技术的RFID读取器来认证RFID标签。标签制造商或其他合法权限产生标签私钥对，并将标签私钥存储在外部不可读标签存储器中，并将标签公钥存储在外部可读标签存储器中。该权限生成一个主私钥公钥，并将主公钥分发给该领域的读者。该权限至少基于标签公钥和主私钥生成特定于标签的电子签名，并将该签名存储在外部可读标签存储器中。读者通过从标签检索标签公钥和电子签名来认证标签，使用主公钥和电子签名验证标签公钥的真实性，挑战标签，从标签接收到对挑战的响应，并使用标签公钥验证响应。

119. 发明授权

US08902627B1 RFID IC with tunneling-voltage profile calibration 有权
标题翻译：具有隧道电压曲线校准的RFID IC
公开(公告)号：US08902627B1
公开(公告)日：2014-12-02
申请号：US13872974
申请日：2013-04-29
申请人： Impinj, Inc.
发明人： Alberto Pesavento , Christopher J. Diorio
IPC分类号： G11C11/22 , G11C7/22 , G06K19/07
CPC分类号： G06K19/0723 , G11C16/3404 , G11C29/006 , G11C29/021 , G11C29/028
摘要： RFID tag ICs employ tunneling-voltage profile calibration during IC manufacturing to determine and store, typically in nonvolatile memory, a tunneling-voltage profile for writing data to the IC's nonvolatile memory. The IC may subsequently read the profile at power-up, prior to writing the memory, or at other times as determined by the IC or by an interrogating reader, and may determine an actual ramp profile for writing to the nonvolatile memory based on the read profile and one or more operating conditions. By using the read profile to determine an actual ramp profile for writing to the nonvolatile memory, the IC may reduce nonvolatile memory write time and oxide stress.
摘要翻译： RFID标签IC在IC制造期间采用隧道电压分布校准，以通常在非易失性存储器中确定和存储用于向IC的非易失性存储器写入数据的隧道电压分布。 IC可以在上电之前，在写存储器之前或在由IC或询问读取器确定的其他时间读取配置文件，并且可以基于读取确定用于向非易失性存储器写入的实际斜坡配置文件配置文件和一个或多个操作条件。通过使用读取配置文件来确定用于写入非易失性存储器的实际斜坡曲线，IC可以减少非易失性存储器写入时间和氧化物应力。

120. 发明授权

US08866595B1 Ticket-based RFID loss-prevention system 有权
标题翻译：基于门票的RFID丢失防范系统
公开(公告)号：US08866595B1
公开(公告)日：2014-10-21
申请号：US13969198
申请日：2013-08-16
申请人： Impinj, Inc.
发明人： Christopher J. Diorio , Scott A. Cooper
IPC分类号： H04Q5/22 , G06K7/10
CPC分类号： G06K7/10366 , H04Q2213/13095
摘要： In RFID systems employed for loss prevention, an item supplier or an ingress reader writes an ownership code associated with an organization or facility into a tag, indicating that an item to which the tag is attached is associated with the facility and not foreign. At checkout or point-of-sale an authorization reader or mobile device writes a computed code and/or a ticket into the tag indicating that the tagged item is allowed to leave the facility. At point-of-exit an exit reader determines if the tagged item is allowed to leave the facility by verifying the ownership code and the code or ticket. The loss-prevention system may issue an alert or sound an alarm if a facility-associated item is leaving the facility without a proper code or ticket indicating that the item is approved to leave.
摘要翻译：在用于损失预防的RFID系统中，物品供应商或入口读取器将与组织或设施相关联的所有权代码写入标签，指示标签所附着的物品与设施而不是外部相关联。在结帐或销售点，授权读取器或移动设备将计算的代码和/或票证写入标签，指示允许标记的物品离开设施。在出口点处，退出阅读器通过验证所有权代码和代码或票证来确定标记的物品是否被允许离开设施。如果设施相关物品离开设施而没有指示物品被批准离开的适当代码或票证，则防损系统可能会发出警报或发出警报。

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