Near-Field Link Control Using Portable Media Detection
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Solution Overview
Problem
Existing near field communication systems struggle to efficiently restrict data transmission and reception with specific communication partners while maintaining links with multiple partners, particularly in scenarios requiring quick processing or preventing information leakage.
Innovation Solution
A communication apparatus that uses detection information from a portable storage medium to selectively restrict data transmission and reception with non-participating communication partners, switching power modes and communication settings to manage links efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a link is established between one communication apparatus and each of a plurality of communication apparatuses to enable simultaneous near field communication, then communication efficiency is improved and user time is reduced, but it becomes difficult to restrict data transmission and reception with specific partners when needed
Solution Approach 1:
The patent applies dynamics by making the communication restriction state changeable based on detection information. The communication apparatus dynamically adjusts its communication state between restricted and unrestricted based on whether detection information is received, allowing flexible control over data transmission with different communication partners while maintaining link establishment.
Solution Approach 2:
The patent applies local quality by implementing communication restriction on a per-partner basis rather than globally. The communication control unit selectively restricts data transmission with specific communication partners that have not transmitted detection information, while allowing normal communication with partners that have transmitted detection information, thus creating localized communication control.
2Reliability
If manual operation is used to turn off near field communication function for specific communication partners, then data security is improved, but operation efficiency deteriorates especially when many communication apparatuses are connected
Solution Approach 1:
The patent applies self-service by enabling the communication apparatus to automatically determine and implement communication restrictions based on detection information received from portable storage media. Instead of requiring manual user operation to restrict communication with each partner, the system automatically identifies which partners should be restricted and applies the restrictions accordingly, saving user time and effort.
Solution Approach 2:
The patent applies preliminary action by establishing communication links with all potential partners in advance, then using detection information to subsequently determine which links should be restricted. This allows the system to prepare all possible communication paths beforehand and only activate restrictions when needed, rather than manually configuring each link individually.
3Measurement precision
If detection information is received from portable storage medium to identify active communication partner, then communication precision is improved, but device complexity increases
Solution Approach 1:
The patent applies intermediary by using detection information from portable storage media as a mediator to identify and verify the active communication partner. The portable storage medium acts as an intermediary carrier that contains identification information, allowing the communication apparatus to accurately identify which partner should be restricted without requiring complex direct verification mechanisms between communication partners.
Data Source
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AI summary
This first communication apparatus is provided with: a first communication unit which, after establishing a link necessary for first near field communication with a communication counterpart existing within a first communication available range, performs the first near field communication with the link-established communication counterpart; and a second communication unit which performs second near field communication with a communication counterpart existing within a second communication available range that is narrower than the first communication available range. In a case where detecting that a portable storage medium with which the second near field communication is available enters the second communication available range, the first communication apparatus transmits, through the first communication unit, detection information which indicates that the portable storage medium enters the second communication available range to a link-established second communication apparatus. In a case where receiving the detection information from the first communication apparatus, the second communication apparatus limits the transmission and reception of data through the first near field communication with communication counterparts other than the first communication apparatus which has transmitted the detection information, while maintaining the establishment of each link with each of a plurality of link-established communication counterparts.