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    RFID READER SYSTEMS DETECTING PILOT TONE
    1.
    发明申请
    RFID READER SYSTEMS DETECTING PILOT TONE 审中-公开
    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。

    Adaptable bandwidth RFID tags
    4.
    发明申请
    Adaptable bandwidth RFID tags 有权
    适应带宽RFID标签

    公开(公告)号：US20050225435A1

    公开(公告)日：2005-10-13

    申请号：US10823991

    申请日：2004-04-13

    申请人： Christopher Diorio ,  Scott Cooper ,  John Hyde ,  Amir Sarajedini ,  Kurt Sundstrom

    发明人： Christopher Diorio ,  Scott Cooper ,  John Hyde ,  Amir Sarajedini ,  Kurt Sundstrom

    IPC分类号： G06K19/07 ,  H04Q5/22

    CPC分类号： G06K19/0723

    摘要： RFID tags, tag circuits, and methods adapting the reception bandwidth. A tag has a decoder for decoding a first received wireless signal subject to a reception bandwidth setting. The tag also has a selector switch for transitioning to a different setting, such as by switching to using a different filter. A subsequently received second signal is decoded subject to the new reception bandwidth setting.

    摘要翻译： RFID标签，标签电路和适应接收带宽的方法。 标签具有解码器，用于对接收带宽设置的第一接收无线信号进行解码。 标签还具有用于转换到不同设置的选择器开关，例如通过切换到使用不同的滤镜。 经过新的接收带宽设置，随后接收的第二信号被解码。

    RFID SYSTEM COMPONENTS IMPLEMENTING ADJUSTED BACKSCATTER CALCULATIONS AND METHODS
    5.
    发明申请
    RFID SYSTEM COMPONENTS IMPLEMENTING ADJUSTED BACKSCATTER CALCULATIONS AND METHODS 有权
    RFID系统组件实施调整后的计算机和方法

    公开(公告)号：US20080006702A2

    公开(公告)日：2008-01-10

    申请号：US11114614

    申请日：2005-04-25

    申请人： Christopher Diorio ,  Kurt Sundstrom ,  Scott Cooper ,  Todd Humes

    发明人： Christopher Diorio ,  Kurt Sundstrom ,  Scott Cooper ,  Todd Humes

    IPC分类号： G06K19/06

    CPC分类号： G06K19/0723 ,  G06K7/0008 ,  H03J1/0058

    摘要： RFID system components, such as readers and tags, communicate by a reader transmitting waveforms that encode a calibration symbol and a divide ratio. Tags include a processor to determine a backscatter link period result by dividing a count value representing the calibration symbol by the divide ratio and adding an adjustment. Tags modulate a backscatter waveform that includes symbols using a link period determined from the result.

    摘要翻译： 诸如读取器和标签的RFID系统组件由读取器传送，该读取器发送编码校准符号和分频比的波形。 标签包括通过将表示校准符号的计数值除以除法比率并且添加调整来确定反向散射链路周期结果的处理器。 标签使用从结果确定的链路周期调制包括符号的反向散射波形。

    RFID READERS SYSTEMS AND METHODS FOR HOPPING AWAY FROM A FREQUENCY CHANNEL WITH RF INTERFERENCE
    8.
    发明申请
    RFID READERS SYSTEMS AND METHODS FOR HOPPING AWAY FROM A FREQUENCY CHANNEL WITH RF INTERFERENCE 有权
    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。

    RFID READERS SYSTEMS AND METHODS FOR EARLY HOPPING OUT OF A FREQUENCY CHANNEL IN THE PRESENCE OF RF INTERFERENCE
    9.
    发明申请
    RFID READERS SYSTEMS AND METHODS FOR EARLY HOPPING OUT OF A FREQUENCY CHANNEL IN THE PRESENCE OF RF INTERFERENCE 有权
    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。

    Inventorying RFID tags by employing a query parameter Q that is adjusted for improving
    10.
    发明申请
    Inventorying RFID tags by employing a query parameter Q that is adjusted for improving 审中-公开
    通过采用调整为改进的查询参数Q来清点RFID标签

    公开(公告)号：US20050280505A1

    公开(公告)日：2005-12-22

    申请号：US11210384

    申请日：2005-08-24

    申请人： Todd Humes ,  Christopher Diorio ,  Scott Cooper ,  Vadim Lobanov

    发明人： Todd Humes ,  Christopher Diorio ,  Scott Cooper ,  Vadim Lobanov

    IPC分类号： G06K7/00 ,  G08B13/14 ,  H04Q5/22

    CPC分类号： G06K7/10019 ,  G06K7/0008

    摘要： An RFID reader inventories a population of tags. The reader evaluates responses from tags by categorizing them in slots. As tags are inventoried, the number of slots based on a Q-parameter is reduced. The reader addresses the tags by communicating a Q1 value for the Q parameter, generates first contents from replies received from the tags, and computes a first merit statistic based on the first contents. Next, the reader determines a Q2 value for the Q parameter, which if used in the same way would meet a preset fairway condition better than the first merit statistic. After determining the Q2 value, the reader addresses a portion of the tags by communicating the Q2 value for the Q parameter.

    摘要翻译： RFID阅读器可以存储大量的标签。 读者通过在插槽中对它们进行分类来评估标签的响应。 随着标签被盘点，减少了基于Q参数的槽数。 读者通过传送Q参数的Q 1值来寻址标签，从从标签接收的回复中生成第一内容，并且基于第一内容计算第一优值统计量。 接下来，读取器确定Q参数的Q 2值，如果以相同的方式使用，则可以比第一优点统计量更好地满足预设的球道条件。 在确定Q 2值之后，读取器通过传达Q参数的Q 2值来寻址标签的一部分。