Communication Device NFC Wi-Fi Direct Connection Management

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Solution Overview

Problem

Existing communication devices struggle to establish a Wi-Fi Direct connection with a second mobile terminal after an NFC connection has been established with a first mobile terminal, often disrupting the connection with the first terminal.

Innovation Solution

A communication device equipped with both a first wireless interface for NFC and a second wireless interface for Wi-Fi Direct, which receives identification information from the first terminal and determines whether to establish a Wi-Fi Direct connection with a second terminal based on matching identification information, ensuring the connection with the first terminal is maintained.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the MFP establishes a WFD connection with a second mobile terminal after receiving a connection request, then the WFD connection with the second terminal can be established, but the WFD connection with the first mobile terminal may be disrupted

Engineering Contradiction:

Improveability to establish WFD connection with second terminalVSAvoidstability of WFD connection with first terminal

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The MFP performs preliminary actions by storing identification information of the first mobile terminal before the WFD connection is disrupted. This preliminary storage of identification data enables the system to later verify whether an incoming connection request is from the original terminal or a different one, allowing it to maintain connection stability while still enabling adaptability to new connection requests

Inventive Principle:

Principle #10Preliminary action

2Adaptability or versatility

If the MFP receives connection requests from multiple mobile terminals, then communication versatility is improved, but connection management complexity increases

Engineering Contradiction:

Improveability to handle multiple terminal connectionsVSAvoidcomplexity of connection management

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The MFP extracts and stores only the essential identification information from the first mobile terminal's connection request. By separating and storing just the identification data independently, the system simplifies the comparison process when receiving subsequent connection requests, reducing connection management complexity while maintaining the ability to handle multiple terminals

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The system performs preliminary storage of identification information before needing to make connection decisions. This preliminary action of storing identification data eliminates the need for complex real-time analysis during connection requests, simplifying the decision-making process while enabling versatile multi-terminal handling

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS10506130B2Communication device and non-transitory computer-readable recording medium storing computer-readable instructions for communication device

Publication Date: 2019.12.10 BROTHER KOGYO KK

AI summary

A communication device may receive first identification information for identifying a first terminal device from the first terminal device, receive a connection request including second identification information for identifying a second terminal device from the second terminal device after the first identification information has been received from the first terminal device, determine whether the first identification information is identical to the second identification information in a case where the connection request is received from the second terminal device, establish a second wireless connection with the second terminal device by sending a predetermined response to the second terminal device in a case where it is determined that the first identification information is identical to the second identification information, and not send the predetermined response to the second terminal device in a case where it is determined that the first identification information is not identical to the second identification information.