Reader and Tag

Simple SummaryContent extracted from patent full text and abstract with AI.

This patent describes an improved RFID (Radio-Frequency Identification) system comprising a reader and a tag with advanced anti-collision mechanisms. It details a method where the tag's transmitted signal includes a synchronization sequence separating two data portions. The reader uses one portion to estimate the communication channel and the other to extract tag data, even in scenarios where multiple tag signals collide. The solution allows simultaneous identification and processing of multiple tags in a single communication slot, significantly improving reading efficiency and maintaining compatibility with existing EPCGlobal Gen 2 RFID standards.

Use CasesContent extracted from patent full text and abstract with AI.

• Inventory management in warehouses and retail where rapid and reliable RFID tag scanning of densely packed items is needed.
• Automated toll or ticketing systems with high tag density (such as multi-lane electronic toll collection).
• Asset tracking in logistics hubs where many tagged items may be within range at the same time.
• Library or archive management for mass check-in/check-out or inventory audits.
• Healthcare asset management, such as tracking equipment or medication with RFID tags in busy hospital environments.
• Event management for rapidly identifying multiple participants via RFID badges as they pass through entry gates.

BenefitsContent extracted from patent full text and abstract with AI.

• Greatly increases the speed and efficiency of RFID systems by enabling the reader to resolve collisions and read multiple tags simultaneously within the same slot.
• Backwards compatibility with existing EPCGlobal Gen 2 RFID standards, allowing upgraded systems to co-exist with conventional tags and readers.
• Reduces identification time in dense tag environments, minimizing delays and bottlenecks.
• Improves reliability in environments with frequent RFID tag collisions, leading to higher data accuracy and fewer missed reads.
• Enables sophisticated operation modes and dynamic adjustment based on detected traffic or collision rates, optimizing throughput.
• Facilitates scalable RFID deployment, especially in environments that require the handling of large numbers of tags.

Technical Classifications (CPCs)

Inventors & Applicants

Patent Abstract

A reader for wirelessly receiving a signal from a tag, the signal comprising a portion on a first side, a portion on a second side and a synchronization sequence to be detected between the first and the second side, wherein the portion on the first side, the synchronization sequence and the portion on the second side are serially arranged with each other, comprises a processor. The processor is configured for storing the received signal, for detecting the synchronization sequence in the received signal, for calculating a transmission characteristic between the tag and the reader, using the portion of the received signal on the first side and for extracting a payload information from the portion of the received signal on the second side, using the calculated transmission characteristic.