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1. 发明申请

US20050237158A1 RFID tag systems, RFID tags and RFID processes using N-ary FSK 审中-公开
标题翻译： RFID标签系统，RFID标签和使用N-ary FSK的RFID流程
公开(公告)号：US20050237158A1
公开(公告)日：2005-10-27
申请号：US11090961
申请日：2005-03-25
申请人： Scott Cooper , Kurt Sundstrom , Aanand Esterberg , Christopher Diorio , Vincent Moretti , Todd Humes
发明人： Scott Cooper , Kurt Sundstrom , Aanand Esterberg , Christopher Diorio , Vincent Moretti , Todd Humes
IPC分类号： G06K7/00 , H04Q5/22
CPC分类号： G06K7/10049 , G06K7/0008
摘要： A process is disclosed for communicating with individual tags in a population of tags having a binary tree organization, wherein each tag corresponds to a leaf node of the binary tree. The process includes singulating a predetermined leaf node and returning to a designated re-entry node associated with the predetermined leaf node after singulating.
摘要翻译：公开了一种与具有二叉树组织的标签群体中的各个标签通信的过程，其中每个标签对应于二叉树的叶节点。该过程包括在分割之后，分割预定的叶节点并返回到与预定叶节点相关联的指定重入节点。

2. 发明申请

US20050237157A1 RFID tag systems, RFID tags and RFID processes with branch node indexing 审中-公开
标题翻译： RFID标签系统，RFID标签和具有分支节点索引的RFID过程
公开(公告)号：US20050237157A1
公开(公告)日：2005-10-27
申请号：US11090899
申请日：2005-03-25
申请人： Scott Cooper , Kurt Sundstrom , Aanand Esterberg , Christopher Diorio , Vincent Moretti
发明人： Scott Cooper , Kurt Sundstrom , Aanand Esterberg , Christopher Diorio , Vincent Moretti
IPC分类号： G06K7/00 , H04Q5/22
CPC分类号： G06K7/10049 , G06K7/0008
摘要： A radio frequency identification tag is disclosed that is configured to transmit a signal modulated with one of more than two different subcarrier modulation frequencies such that the signal represents more than one binary bit as a single symbol.
摘要翻译：公开了一种射频识别标签，其被配置为发送用多于两个不同子载波调制频率之一调制的信号，使得信号表示多于一个二进制位作为单个符号。

3. 发明申请

US20070109129A1 RFID READER SYSTEMS DETECTING PILOT TONE 审中-公开
标题翻译： RFID读写器系统检测引导音
公开(公告)号：US20070109129A1
公开(公告)日：2007-05-17
申请号：US11622092
申请日：2007-01-11
申请人： Kurt Sundstrom , Scott Cooper , Amir Sarajedini , Aanand Esterberg , Todd Humes , Christopher Diorio
发明人： Kurt Sundstrom , Scott Cooper , Amir Sarajedini , Aanand Esterberg , Todd Humes , Christopher Diorio
IPC分类号： G08B13/14
CPC分类号： G06K7/0008
摘要： RFID tags are commanded to generate a pilot tone in their backscatter. When the backscattered pilot tone is received in the reader, the pilot tone is used to estimate the tag period/frequency. Then, the estimate is used to seed and lock a symbol timing recovery loop, which provides a detected signal to one or more correlators for detecting the tag preamble. A delayed version of the received tag signal is compared against a baseline signal threshold established from the received signal to detect the pilot tone.
摘要翻译：命令RFID标签在其反向散射中产生导频音。当在读取器中接收到反向散射导频时，使用导频音来估计标签周期/频率。然后，估计用于对符号定时恢复循环进行种子和锁定，该循环向一个或多个相关器提供检测信号以检测标签前导码。将接收到的标签信号的延迟版本与从接收信号建立的基线信号阈值进行比较，以检测导频音。

4. 发明申请

US20070296590A1 RFID READERS SYSTEMS AND METHODS FOR HOPPING AWAY FROM A FREQUENCY CHANNEL WITH RF INTERFERENCE 有权
标题翻译： RFID读写器系统和方法用于从具有RF干扰的频道通道中跳出
公开(公告)号：US20070296590A1
公开(公告)日：2007-12-27
申请号：US11849804
申请日：2007-09-04
申请人： Christopher Diorio , Aanand Esterberg , Thomas Anderl , Scott Cooper
发明人： Christopher Diorio , Aanand Esterberg , Thomas Anderl , Scott Cooper
IPC分类号： G08B13/14
CPC分类号： G06K7/0008 , G06K7/10069 , G06K7/10198 , G06K19/0723
摘要： RFID readers, systems, and methods are provided for overcoming the effects of RF interference. While a system is communicating in a channel, RF interference is monitored. If it is low, then the next channel to be hopped onto is chosen in an unbiased manner. But if interference is high, then the next channel to be hopped onto is chosen in a biased manner that disfavors at least one channel over another, in view of the detected interference. The choice of the next channel can thus result in diminishing communication in channels with a lot of RF interference.
摘要翻译：提供RFID读取器，系统和方法来克服RF干扰的影响。当系统正在通道中进行通信时，会监视射频干扰。如果它是低的，那么要跳过的下一个通道是以不偏不倚的方式选择的。但是如果干扰较高，则考虑到检测到的干扰，要跳过的下一个信道被选择为以偏置的方式使得至少一个信道相对于另一信道不利。因此，下一个通道的选择可以导致具有大量RF干扰的通道中的通信减少。

5. 发明申请

US20070296603A1 RFID READERS SYSTEMS AND METHODS FOR EARLY HOPPING OUT OF A FREQUENCY CHANNEL IN THE PRESENCE OF RF INTERFERENCE 有权
标题翻译： RFID读写器系统和方法在RF干扰存在的情况下早期被频繁地通道
公开(公告)号：US20070296603A1
公开(公告)日：2007-12-27
申请号：US11849737
申请日：2007-09-04
申请人： Christopher Diorio , Thomas Anderl , Scott Cooper , Aanand Esterberg
发明人： Christopher Diorio , Thomas Anderl , Scott Cooper , Aanand Esterberg
IPC分类号： H04L1/00
CPC分类号： G06K7/0008 , G06K7/10069 , G06K7/10198
摘要： RFID readers, systems, and methods are provided for overcoming the effects of RF interference. While a system is communicating in a channel, RF interference is monitored. If it is low, then hopping to another channel is performed according to an ordinary decision. But if interference is high, then hopping out to another channel can be earlier than would be dictated by the ordinary decision under the same circumstances. The earlier hopping out can result in diminishing communication in channels with a lot of RF interference.
摘要翻译：提供RFID读取器，系统和方法来克服RF干扰的影响。当系统正在通道中进行通信时，会监视射频干扰。如果为低，则根据普通决定执行到另一信道的跳频。但是，如果干扰较大，那么跳出另一个频道可能会比同样情况下的普通决策所规定的更早。较早的跳出可能导致频道中的通信频繁减少，具有大量的射频干扰。

6. 发明申请

US20070177738A1 Secure two-way RFID communications 审中-公开
标题翻译：安全双向RFID通信
公开(公告)号：US20070177738A1
公开(公告)日：2007-08-02
申请号：US11356885
申请日：2006-02-17
申请人： Christopher Diorio , Aanand Esterberg , Todd Humes
发明人： Christopher Diorio , Aanand Esterberg , Todd Humes
IPC分类号： H04K1/00
CPC分类号： G06K7/0008 , G06K7/10257 , H04L9/0656 , H04L2209/601 , H04L2209/805
摘要： Methods and apparatus provide secure two-way (reader-to-tag and tag-to-reader) RFID communications. According to one aspect, a tag receives a noise-encrypted RF carrier signal from a reader and backscatter modulates it with tag information. Eavesdroppers cannot extract the tag information from the backscattered signal because it is masked by the noise encryption.
摘要翻译：方法和设备提供安全的双向（读写器到标签和标签到阅读器）RFID通信。根据一个方面，标签从读取器接收噪声加密的RF载波信号，并用标签信息对后向散射进行调制。窃听者无法从反向散射信号中提取标签信息，因为它被噪声加密掩蔽。

7. 发明申请

US20060236203A1 Error recovery in RFID reader systems 有权
标题翻译： RFID阅读器系统中的错误恢复
公开(公告)号：US20060236203A1
公开(公告)日：2006-10-19
申请号：US11388235
申请日：2006-03-22
申请人： Christopher Diorio , Seth Bridges , Aanand Esterberg , William Colleran
发明人： Christopher Diorio , Seth Bridges , Aanand Esterberg , William Colleran
IPC分类号： H03M13/00
CPC分类号： H03M13/09 , G06K7/0008 , G06K17/00
摘要： RFID systems, devices, software and methods are adapted for receiving from an RFID tag at least waves that communicate at least a first version of its code. An output tag code is output that is the same as the first version, if a fidelity criterion is met regarding the first version. If not met, the output tag code is instead a final version that is reconstructed from the first version, and also from any additionally optionally subsequently received versions. In some embodiments, an error recovery block includes a subcomponent fidelity criterion checking block that can determine whether the fidelity criterion is met, and a code reconstruction block that can derive the final version.
摘要翻译： RFID系统，设备，软件和方法适于从RFID标签接收至少传达其代码的第一版本的波。如果满足关于第一版本的保真度标准，输出与第一版本相同的输出标签代码。如果不满足，则输出标签代码是从第一版本重建的最终版本，也可以是任何另外可选地随后接收的版本。在一些实施例中，错误恢复块包括可以确定是否满足保真度准则的子组件保真度准则检查块，以及可以导出最终版本的代码重建块。

8. 发明申请

US20050058292A1 Secure two-way RFID communications 审中-公开
标题翻译：安全双向RFID通信
公开(公告)号：US20050058292A1
公开(公告)日：2005-03-17
申请号：US10660829
申请日：2003-09-11
申请人： Christopher Diorio , Aanand Esterberg , Todd Humes
发明人： Christopher Diorio , Aanand Esterberg , Todd Humes
IPC分类号： G06K7/00 , G06K17/00 , H04K1/00
CPC分类号： G06K7/0008 , G06K7/10257 , H04L9/0656 , H04L2209/601 , H04L2209/805
摘要： Methods and apparatus for providing secure two-way (reader-to-tag and tag-to-reader) RFID communications. According to one aspect of the invention, a tag receives a noise-encrypted RF carrier signal from a reader and backscatter modulates it with tag information. Eavesdroppers cannot extract the tag information from the backscattered signal because it is masked by the noise encryption. According to another aspect of the invention, establishing a secure two-way RFID communication link includes a reader modulating a carrier signal with a noise encryption signal and broadcasting the noise-encrypted carrier to a singulated tag. The tag backscatter modulates the noise-encrypted carrier with a first portion of a key and/or a one-time pad pseudorandom number. If a key is used, upon receiving the backscattered signal the reader verifies that the tag is authentic, and, if verified as authentic, transmits a second portion of the key, possibly encrypted by a function depending on the one-time pad pseudorandom number, to the tag.
摘要翻译：用于提供安全双向（读写器到标签和标签到阅读器）RFID通信的方法和设备。根据本发明的一个方面，标签从读取器接收噪声加密的RF载波信号，并用标签信息对后向散射进行调制。窃听者无法从反向散射信号中提取标签信息，因为它被噪声加密掩蔽。根据本发明的另一方面，建立安全双向RFID通信链路包括读取器，利用噪声加密信号调制载波信号，并将经噪声加密的载波广播到单个标签。标签反向散射利用键的第一部分和/或一次性衬垫伪随机数来调制噪声加密的载波。如果使用密钥，则在接收到反向散射信号时，读取器验证标签是可信的，并且如果被证实为真实的，则发送密钥的第二部分，可能由根据一次性衬垫伪随机数的功能加密，到标签。

9. 发明申请

US20060199551A1 SINGLE RF OSCILLATOR SINGLE-SIDE BAND MODULATION FOR RFID READERS USING TONE INSERTION DURING READER RECEPTION 有权
标题翻译：单片射频振荡器用于RFID读取器的单边调制在读卡器接收期间使用音频插入
公开(公告)号：US20060199551A1
公开(公告)日：2006-09-07
申请号：US11073340
申请日：2005-03-04
申请人： Michael Thomas , Scott Cooper , Aanand Esterberg
发明人： Michael Thomas , Scott Cooper , Aanand Esterberg
IPC分类号： H04B1/04
CPC分类号： H04B1/68 , H03C1/60 , H03C2200/007
摘要： A transmitter upconverts a SSB data signal during a first operational mode using a RF upconverting signal having a frequency that is offset from a center frequency of a channel (ωC) by an amount that depends on the data signal's SSB bandwidth (ωM). In a second operational mode, the transmitter upconverts a tone signal having a frequency ωM using the same RF upconverting signal. The upconverted tone signal can be used as a continuous wave (CW) carrier signal having a frequency ωC. The transmitter has a single RF oscillator to output both a SSB signal centered at frequency ωC during the first mode and a carrier signal of frequency ωC during the second mode.
摘要翻译：发射机在第一操作模式期间使用具有偏离信道的中心频率（ω）的频率的RF上变频信号来上变频SSB数据信号，该频率取决于数据信号 SSB带宽（Ω-M）。在第二操作模式中，发射器使用相同的RF上变频信号来上变频具有ωωM的频率信号。上转换音调信号可以用作具有频率ωC的连续波（CW）载波信号。发射机具有单个RF振荡器，以在第一模式期间输出以频率ω-C'为中心的SSB信号，并且在第二模式期间输出频率ωC'C的载波信号。

10. 发明申请

US20060211386A1 Single RF oscillator single-side band modulation for RFID readers with frequency translation and filtering 有权
标题翻译：用于具有频率转换和滤波的RFID读取器的单RF振荡器单边带调制
公开(公告)号：US20060211386A1
公开(公告)日：2006-09-21
申请号：US11073292
申请日：2005-03-04
申请人： Michael Thomas , Scott Cooper , Aanand Esterberg
发明人： Michael Thomas , Scott Cooper , Aanand Esterberg
IPC分类号： H04B1/02 , H04B1/68 , G08B13/14
CPC分类号： G06K7/0008
摘要： A transmitter shifts a baseband data signal having a bandwidth of 2ωM using a tone signal having a frequency ωM, which centers a sideband of the data signal at zero frequency. The transmitter then filters the shifted signal to filter out the non-centered sideband, and then adds the tone signal to form a composite signal. The transmitter upconverts the composite signal during a first operational mode using a RF signal having a frequency ωC equal to a center frequency of a channel. In a second operational mode, the transmitter upconverts a DC level using the same RF signal. The upconverted DC level can be used as a continuous wave carrier signal having a frequency ωC. The transmitter has a single RF oscillator to output both a SSB signal centered at frequency ωC during the first mode and a carrier signal of frequency ωC during the second mode.
摘要翻译：发射机使用具有频率ωM M M的音调信号来移动具有2omega M带宽的基带数据信号，该频率ωM是使数据信号的边带以零频率居中。然后，发射机对移位的信号进行滤波，以滤除非中心边带，然后将音调信号相加以形成复合信号。发射机在第一操作模式期间使用具有等于信道的中心频率的频率ω-C的RF信号来上变频合成信号。在第二种操作模式中，发射器使用相同的RF信号上变频DC电平。上转换的DC电平可以用作具有频率ωC的连续波载波信号。发射机具有单个RF振荡器，以在第一模式期间输出以频率ω-C'为中心的SSB信号，并且在第二模式期间输出频率ωC'C的载波信号。

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