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公开(公告)号：US12086668B1
公开(公告)日：2024-09-10
申请号：US18316311
申请日：2023-05-12
申请人： Impinj, Inc.
CPC分类号： G06K19/0723 , G06K17/0029 , H04L9/0861 , H04L9/3226
摘要： A method is provided to determine unique identifiers. A physical item has an RFID integrated circuit (IC) having a unique identifier and a secret. The RFID IC may be configured to provide an identifier portion and a response to a previously sent challenge, where the identifier portion by itself is insufficient to completely identify the IC or item and the response is based on the challenge and the secret. Attempts are made to verify the response using a set of potential secrets determined using the identifier portion. If the response is successfully verified using a certain secret, the secret may then be used to determine one or more other identifier portions. The unique, complete identifier may then be determined from a combination of at least the identifier portions.
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公开(公告)号：US12039390B2
公开(公告)日：2024-07-16
申请号：US17762940
申请日：2020-10-28
申请人： Impinj, Inc.
IPC分类号： H04W4/80 , G06K19/073 , G06K19/077
CPC分类号： G06K19/07309 , G06K19/07749 , H04W4/80
摘要： RFID tag ICs may be configured with privacy modes. When a tag IC is in a privacy mode, it will not respond to commands unless a previous command includes correct verification information or specifies a recycling indicator of the tag IC. If the previous command includes correct verification information, then the tag IC will respond to one or more subsequent commands as normal, for example by responding with one or more identifiers. If the previous command does not include correct verification information but specifies a recycling indicator and the privacy mode is recycling-enabled, the tag IC may respond to one or more subsequent commands with recycling information. The recycling information identifies whether or how an item associated with the RFID IC can be recycled or disposed but does not otherwise identify the RFID IC or item. Otherwise, the tag IC may remain silent.
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公开(公告)号：US10373115B1
公开(公告)日：2019-08-06
申请号：US15811554
申请日：2017-11-13
申请人： Impinj, Inc.
IPC分类号： G06Q10/08 , G06K19/07 , G08B13/24 , G06K19/077 , G06K7/10
摘要： An RFID loss-prevention system (LPS) may monitor RFID-tagged items in a facility. An RFID reader transmits a first inventory command configured to cause tags in a first state to respond, receive a reply from a first tag, determine that the first tag has a low transition risk, and cause the first tag to switch to a second state. The reader may also receive a reply from a second tag, determine that the second tag has a high transition risk, and cause the second tag to remain in the first state. The reader may then transmit a second inventory command configured to cause tags in the first state to respond, receive a reply from the second tag in response to the second inventory command, determine that the second tag has inappropriately exited the facility, and issue an alert.
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公开(公告)号：US10311353B1
公开(公告)日：2019-06-04
申请号：US15788792
申请日：2017-10-19
申请人： Impinj, Inc.
IPC分类号： G06K7/08 , G06K19/06 , G06K19/077
摘要： An RFID integrated circuit, in addition to having conductive pads to electrically couple to an antenna, may also include a conductive bridge configured to electrically connect different portions of the antenna together. In some embodiments, the conductive bridge may be used to form a multi-turn antenna segment.
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公开(公告)号：US10311351B1
公开(公告)日：2019-06-04
申请号：US15870775
申请日：2018-01-12
申请人： Impinj, Inc.
发明人： Christopher J. Diorio , Ronald L. Koepp , Harley K. Heinrich , Theron Stanford , Ronald A. Oliver
IPC分类号： G06K19/07 , H01L23/498 , H01Q1/22 , H01L23/00 , G06K19/077
摘要： Embodiments are directed to a Radio Frequency Identification (RFID) integrated circuit (IC) having a first circuit block electrically coupled to first and second antenna contacts. The first antenna contact is disposed on a first surface of the IC and the second antenna contact is disposed on a second surface of the IC different from the first surface. A substrate of the RFID IC, or a portion of the IC substrate, electrically couples the first circuit block to at least one of the first and second antenna contacts. The IC includes one or more interfaces or barrier regions that at least partially electrically isolate the first circuit block from the rest of the IC substrate.
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公开(公告)号：US10059327B2
公开(公告)日：2018-08-28
申请号：US15106291
申请日：2013-12-31
发明人： Masaaki Mihara
IPC分类号： B60W20/15 , B60K6/38 , B60W10/02 , B60W10/06 , B60W10/08 , F16H41/24 , B60W20/13 , B60L11/02 , B60K6/48
CPC分类号： B60W20/15 , B60K6/38 , B60K6/48 , B60K2006/4825 , B60L50/10 , B60W10/023 , B60W10/06 , B60W10/08 , B60W20/13 , B60Y2400/426 , B60Y2400/427 , F16D2500/10493 , F16H41/24 , Y02T10/6252 , Y02T10/6286 , Y10S903/93
摘要： Briefly stated, technologies are generally described for harvesting energy for a vehicle having an engine and a torque converter. In various examples, an energy harvesting system is described, where the torque converter may be configured to have an input shaft driven by the engine, and an output shaft. Each of the input shaft and output shaft of the torque converter may be mechanically coupled to one of a first portion and a second portion of an electric generator. The electric generator may generate electrical energy using a rotational speed difference between the input shaft and the output shaft of the torque converter. As a result, the electric generator may store at least a portion of the electrical energy, which otherwise would be lost at the torque converter, in a charge storage device. The stored electrical energy may be transmitted to an assist motor configured to drive a rotation of wheels.
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公开(公告)号：US10049317B1
公开(公告)日：2018-08-14
申请号：US15690597
申请日：2017-08-30
申请人： Impinj, Inc.
IPC分类号： G06K19/07
摘要： RFID tags capable of transitioning between a private state and one or more public states are provided. In the private state, tags may participate in an inventory round without restriction. In a public state, tags may be prevented from participating in an inventory round, allowed to participate without providing actual identifying information, or allowed to participate providing an alternate identifier. Whether and how the tag responds in public state may depend on certain conditions including if one or more of the tag's flags are asserted or deasserted. Readers may select a public tag for inventorying by providing sufficient information to the tag to verify the reader's authenticity, and the tag then asserting or deasserting one or more of its flags accordingly. The asserted or deasserted flag(s) may be used to determine whether and how a tag in public state participates in an inventory round.
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公开(公告)号：US10037444B1
公开(公告)日：2018-07-31
申请号：US15876825
申请日：2018-01-22
申请人： Impinj, Inc.
CPC分类号： G06K7/10019
摘要： RFID readers may be configured to recover multiple, collided RFID tag signals. An RFID reader may receive a collided reply waveform including at least first and second tag responses. The reader may determine that the collided reply waveform contains multiple tag responses and recover the first and second tag responses from the collided reply waveform. The reader may first recover the first tag response, reconstruct the first tag response, and subtract the reconstructed first tag response from the collided reply waveform to form a modified tag response. The reader may then recover the second tag response from the modified tag response.
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公开(公告)号：US09954964B2
公开(公告)日：2018-04-24
申请号：US15002695
申请日：2016-01-21
发明人： Ezekiel Kruglick
CPC分类号： H04L67/22 , H04L51/32 , H04L67/306 , H04W4/21
摘要： Technologies are presented for providing a suggestion list presenting options for posting information related to viewed content on a communication network. In some examples, a user may desire to contribute to posted content by adding comments and other relevant information. A system may identify one or more key terms included in the viewed content, and may compare the key terms with content, such as files, emails, websites, images and media content, on computing devices and web browser histories associated with the user to identify information that may be related to the viewed content. If the system identifies information related to the key terms of the viewed content, the system may present the identified information associated with key terms to the user, and may enable selection from a posting suggestion list for automatically posting.
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公开(公告)号：US09954278B1
公开(公告)日：2018-04-24
申请号：US14874418
申请日：2015-10-03
申请人： Impinj, Inc.
发明人： Vincent Moretti , Omer Onen , Ronald A. Oliver
CPC分类号： H01Q3/24 , G06K7/10356 , H01Q1/2216 , H01Q3/34 , H01Q21/061
摘要： A synthesized-beam transceiver system steers a beam of a two-dimensional antenna array by activating a first subset of antenna elements to orient the beam in a first direction and subsequently activating a second subset of the antenna elements to orient the beam in a different direction. The system also electrically connects antenna elements that are inactive, not in the first subset, or not in the second subset to a reference potential of the array.
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