NFC Tag Segmentation for Wireless LAN State Switching
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Solution Overview
Problem
Existing near field wireless communication systems face challenges in efficiently switching the wireless LAN activation state without unintentionally rewriting other data on an RFID tag, due to constraints in the NDEF format and the need to know the data structure within the RFID, leading to potential loss of user-specific information.
Innovation Solution
A communication apparatus and method that utilizes a terminal device with both NFC and wireless LAN capabilities, allowing for NFC touch operations to select and write specific data to an NFC memory, then change the communication mode of a printing apparatus, ensuring that the intended processing mode is maintained and user data is preserved by writing back original data after the operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a state flag of an RFID tag is rewritten by using near field wireless communication to switch the activate/inactivate state of wireless LAN, then power consumption is reduced, but all information within the RFID tag is unintentionally rewritten due to format constraints
Solution Approach 1:
The patent segments the RFID tag data structure into multiple independent regions: a first region storing user information and a second region storing control information. This segmentation allows the control apparatus to modify only the second region (control information) while preserving the first region (user information), thereby avoiding unintentional data loss while enabling wireless LAN state switching through near field communication.
2Ease of operation
If all regions of RFID tag are rewritten during data writing operation due to NDEF format constraints, then state flag can be changed, but user-specific information is lost
Solution Approach 1:
The patent divides the RFID tag into distinct segments: a first region for user information and a second region for control information. This structure enables selective writing operations where only the second region is modified during state switching, preserving user information in the first region while maintaining ease of operation for state changes.
Solution Approach 2:
The patent applies local quality by assigning different functional properties to different regions of the RFID tag. The first region is designated for read-only user information storage, while the second region is designated for writable control information. This localized functional differentiation allows precise control over which data is modified during operations.
3Measurement precision
If the apparatus needs to know the data structure within RFID to rewrite state flag, then precise control is achieved, but device complexity increases
Solution Approach 1:
The patent implements local quality by creating clearly defined regions with specific functions: the first region for user information and the second region for control information. This structured approach provides precise control over data writing operations without requiring complex data structure knowledge, as the region boundaries and purposes are explicitly defined and easily identifiable.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables easy switching of communication modes between devices without requiring knowledge of the RFID data structure, ensuring that user-intended processes are executed and critical information is retained, enhancing usability and reducing power consumption.
Implementation Method 1
a terminal device (200) having a near field wireless communication unit (201)
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
A communication apparatus (200) including a near field wireless communication unit (201) which holds communication information regarding a communication sets a communication mode to be used for a wireless communication unit supporting a longer field wireless communication than a wireless communication using a near field wireless communication unit (201) in accordance with write information written from an external apparatus to the near field wireless communication unit (201).