Wireless LAN Adaptor Electric Field Intensity Projector Connection
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Solution Overview
Problem
Conventional wireless projector connection methods are prone to improper connections due to the use of dongle-type wireless LAN adaptors, which can lead to security issues and failure in detecting the correct projector, especially when multiple projectors with the same SSID are present on different channels.
Innovation Solution
A wireless projector apparatus with a wireless LAN adaptor containing unique identifier information and an auto-run program that connects to the intended projector by measuring the electric field intensity of the received radio wave, preventing improper connections and ensuring reliable connection to the correct projector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dongle-type wireless LAN adaptor is used for connecting to a projector, then portability and ease of connection are improved, but the risk of accidental improper connection increases
Solution Approach 1:
The adaptor measures the electric field intensity of radio waves from detected projectors and feeds back this information to determine connection target. This feedback mechanism ensures that the adaptor connects to the intended projector by verifying signal strength characteristics, preventing accidental connections to wrong projectors while maintaining ease of wireless connection.
2Ease of operation
If conventional SSID-based search method is used, then connection setup is simplified, but the ability to detect the correct projector among multiple projectors with same SSID is lost
Solution Approach 1:
The invention changes the detection parameter from SSID alone to electric field intensity of radio waves. By measuring the intensity parameter, the system can distinguish between multiple projectors even when they broadcast the same SSID, enabling accurate projector detection while maintaining simplified connection setup through automatic intensity-based selection.
3Adaptability or versatility
If multiple projectors with same SSID on different channels are present, then network coverage and accessibility are improved, but the PC's ability to detect and connect to the intended projector is compromised
Solution Approach 1:
The adaptor actively measures electric field intensity from projectors on different channels and uses this feedback to identify the intended projector. This allows the system to maintain broad network coverage across multiple channels while ensuring reliable connection to the correct projector through intensity-based verification.
4Productivity
If automatic connection is implemented, then connection speed and convenience are improved, but the risk of connecting to the wrong projector increases
Solution Approach 1:
The invention changes the automatic connection criterion from simple SSID matching to electric field intensity measurement. This enables fast automatic connection while preventing wrong connections, as the intensity parameter provides verification that the detected projector is the intended target before automatic connection is established.
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
The solution prevents accidental connections and ensures reliable connection to the intended wireless projector, even when multiple projectors with the same SSID are present on different channels, enhancing security and connection efficiency.
Implementation Method 1
an electric field intensity measuring unit measuring the electric field intensity of a received radio wave
Data Source
AI summary
A wireless LAN adaptor includes an auto-run program for a connection process, containing a projector identifier for specifying a connection destination. In the process while this auto-run program is executed, an electric field intensity measuring unit measures the electric field intensity of a response radio wave from the wireless projector. The control unit interrupts connection operation and makes the display unit of the PC produce a display for requesting judgment when the electric field intensity is smaller than a predetermined value.