Multi-Antenna RFID Printer for Faster Encoding Verification
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Solution Overview
Problem
Conventional RFID printers face challenges in optimizing printing speed due to simultaneous encoding and verification operations, which reduce overall print speed and throughput.
Innovation Solution
A RFID printer device with two dedicated antennas, one for encoding and one for verifying, allows separate communication windows for each operation, optimizing print speed by minimizing bottlenecks and enabling faster throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single RFID antenna is used for both encoding and verification operations, then device complexity is reduced, but printing speed decreases due to sequential operation requirements
Solution Approach 1:
The patent divides the single RFID antenna function into two separate antennas: a first RFID antenna dedicated to encoding operations and a second RFID antenna dedicated to verification operations. This segmentation allows both operations to occur simultaneously rather than sequentially, resolving the contradiction between device simplicity and printing speed by accepting slightly higher complexity in exchange for significant throughput improvement.
Solution Approach 2:
The patent introduces a temporal dimension by creating separate communication windows for encoding and verification operations. The first RFID antenna operates during a first communication window while the second RFID antenna operates during a second communication window, allowing parallel processing in the time domain and eliminating the speed penalty of sequential operations.
2Device complexity
If encoding and verification are performed sequentially using one antenna, then device complexity is minimized, but productivity decreases due to operation bottlenecks
Solution Approach 1:
The patent segments the RFID communication function into two parallel pathways: encoding pathway using the first antenna and verification pathway using the second antenna. This eliminates the sequential bottleneck where verification had to wait for encoding completion, thereby doubling the effective throughput without requiring complex multi-antenna coordination protocols.
Solution Approach 2:
The patent ensures continuous useful action by overlapping the encoding and verification communication windows. While the first antenna completes encoding during its communication window, the second antenna simultaneously performs verification, eliminating idle time and maintaining continuous productive operation throughout the printing process.
3Reliability
If print speed is reduced to accommodate encoding operations, then encoding accuracy is maintained, but overall printing speed decreases
Solution Approach 1:
The patent segments the speed constraint by dedicating separate time windows and antennas for encoding and verification. The first RFID antenna operates at optimized encoding speed during its communication window, while the second antenna performs verification independently, allowing each operation to maintain its required speed without compromising accuracy.
Solution Approach 2:
The patent performs encoding operations in advance during the first communication window before verification begins. This preliminary encoding action allows the system to complete data transmission to the RFID tag before the verification process starts, ensuring encoding accuracy is fully established before speed optimization for verification takes effect.
Data Source
AI summary
A radio frequency identification (RFID) printer device for electronically encoding and verifying RFID labels, the RFID printer device comprising a thermal printhead, a platen roller, a first RFID antenna configured upstream from the thermal printhead and the platen roller, a second RFID antenna configured downstream from the first RFID antenna, a memory device having executable instructions stored therein, and one or more processors communicatively coupled to the memory, the one or more processors, in response to the executable instructions, configured to transmit data via the first RFID antenna, wherein the data is encoded to one or more RFID tags associated with respective one or more RFID labels during a first RFID communication window, and receive and transmit data via the second RFID antenna to verify the encoded data during a second RFID communication window.