Impinj has been granted a patent for an RFID loss-prevention system that monitors RFID-tagged items in a facility. The system uses an RFID reader to transmit inventory commands and receive replies from tags, determining the transition risk for each item and adjusting the inventory rate accordingly. GlobalData’s report on Impinj gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Impinj, Contactless verification was a key innovation area identified from patents. Impinj's grant share as of September 2023 was 79%. Grant share is based on the ratio of number of grants to total number of patents.
Rfid system for adjusting inventory rate based on transition risk
A recently granted patent (Publication Number: US11748703B1) describes a radio frequency identification (RFID) system that can adjust the inventory rate of RFID-tagged items. The system includes a transceiver that wirelessly communicates with multiple RFID tags and a processing block that is connected to the transceiver.
The processing block is responsible for transmitting an inventory command and receiving a reply from an RFID tag. Based on the received reply, the processing block determines the transition risk associated with the item. The transition risk can be determined based on factors such as the physical size or value of the item, the zone in which the item is located, or the angle-of-arrival of the received reply.
Once the transition risk is determined, the processing block adjusts the inventory rate accordingly. If the transition risk is high, the system either maintains or increases the inventory rate. On the other hand, if the transition risk is low, the system reduces the inventory rate.
Additionally, the processing block can adjust other parameters based on the determined transition risk. For example, it can adjust the frequency at which the system uses beams oriented towards the location of the RFID tag for inventorying, or the duration of these beams.
The patent also describes a variation of the RFID system that is configured to monitor RFID-tagged items. Similar to the previous system, this variation includes a transceiver and a processing block. The processing block transmits an inventory command, receives a reply from an RFID tag, and determines the transition risk based on the received reply.
In this variation, the processing block determines whether the RFID tag should participate in a subsequent inventory round based on the transition risk. If the transition risk is high, the RFID tag is made to participate in the subsequent round and the tag inventory rate is either maintained or increased. Conversely, if the transition risk is low, the tag inventory rate is reduced and the RFID tag may refrain from participating in the subsequent round.
The processing block can also adjust the frequency and duration of beams oriented towards the RFID tag location based on the determined transition risk.
Overall, this patent presents innovative RFID systems that can dynamically adjust the inventory rate and other parameters based on the transition risk associated with RFID-tagged items. These systems have the potential to improve inventory management and tracking efficiency in various industries.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
