公开(公告)号：WO2022159608A1

公开(公告)日：2022-07-28

申请号：PCT/US2022/013164

申请日：2022-01-20

Applicant: IMPINJ, INC.

Inventor： BREWSTER, Megan, Marie ,  COOPER, Scott, A. ,  DIORIO, Christopher, J. ,  HYDE, John, D. ,  MARTINEZ, Rene, Dominic ,  ROBSHAW, Matthew

IPC: G06K7/10 ,  G06K19/07 ,  G06Q10/08

Abstract: Protocol-specified RFID tag inventorying can be modified to streamline information exchange. For example, RFID tags may be able to respond to certain RFID reader commands with additional or other information instead of only a pseudorandom number or a certain tag identifier, or may not even respond at all. Such other information may include all or portions of other tag identifiers, or information associated with tag identifiers, such as error-checking codes or protocol control bits. Tags may also choose data stored in tag memory with location of the data known only to the tag, compare to a mask received in an inventorying command and decide to participate or not in an inventory round based on a comparison result.

公开(公告)号：WO2008030471A2

公开(公告)日：2008-03-13

申请号：PCT/US2007/019360

申请日：2007-09-05

Applicant: IMPINJ, INC. ,  DIORO, Christopher, J. ,  ANDERL, Thomas, G. ,  COOPER, Scott, A. ,  ESTERBERG, Aanand

Inventor： DIORO, Christopher, J. ,  ANDERL, Thomas, G. ,  COOPER, Scott, A. ,  ESTERBERG, Aanand

IPC: H04L1/00

CPC classification number: H04L5/0062 ,  H04B1/715 ,  H04B2001/7154 ,  H04L1/0045 ,  H04L5/0005

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2005101305A1

公开(公告)日：2005-10-27

申请号：PCT/US2005/012490

申请日：2005-04-12

Applicant: IMPINJ, INC. ,  DIORO, Christopher, J. ,  COOPER, Scott, A. ,  HYDE, John, D. ,  SARAJEDINI, Amir ,  SUNDSTROM, Kurt, E.

Inventor： DIORO, Christopher, J. ,  COOPER, Scott, A. ,  HYDE, John, D. ,  SARAJEDINI, Amir ,  SUNDSTROM, Kurt, E.

IPC: G06K19/07

CPC classification number: G06K19/0723

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2008030446A2

公开(公告)日：2008-03-13

申请号：PCT/US2007/019323

申请日：2007-09-05

Applicant: IMPINJ, INC. ,  DIORIO, Christopher, J. ,  ESTERBERG, Aanand ,  ANDERL, Thomas, G. ,  COOPER, Scott, A.

Inventor： DIORIO, Christopher, J. ,  ESTERBERG, Aanand ,  ANDERL, Thomas, G. ,  COOPER, Scott, A.

IPC: H04L1/00

CPC classification number: H04L5/0062 ,  H04B1/715 ,  H04B2001/7154 ,  H04L1/0045 ,  H04L5/0005

Abstract: 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.

Abstract translation: 为了克服RF干扰的影响，提供RFID阅读器，系统和方法。 当一个系统正在通道中通信时，会监测射频干扰。 如果它很低，那么将以无偏差的方式选择要跳到的下一个通道。 但是如果干扰很高，那么考虑到检测到的干扰，下一个要跳频的信道是以偏倚的方式选择的，这会使至少一个信道不利于另一个信道。 因此，选择下一个频道会导致信道中的通信量减少，从而产生大量的RF干扰。