Optical Identification for Secure Wireless Link Setup
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Solution Overview
Problem
In a medical environment, it is challenging for mobile communication facilities to accurately establish a communication link with another facility due to the presence of multiple devices in range, making it difficult to identify the correct device for data exchange, especially when attempting to set up a wireless link like Bluetooth.
Innovation Solution
A method is introduced where a communication link is established between two facilities using a radio interface, with one facility transmitting identification information as an optical signal that can be received by a sensor, allowing secure and accurate setup of the link by comparing the received information with the sender's own identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a user attempts to establish a wireless communication link by selecting from a list of available devices, then the link can be established, but the process becomes complex and time-consuming when many devices are in range
Solution Approach 1:
The patent segments the device identification process into two distinct phases: optical signal detection for initial identification, followed by radio interface communication for data exchange. This segmentation allows the system to first quickly identify the target device through optical signals (simplifying the process), then establish the actual communication link through radio interfaces (maintaining functionality). The optical signal acts as a separate identification layer that reduces the complexity of device selection.
Solution Approach 2:
The patent applies preliminary action by having the target device transmit its identification information via optical signal before the actual communication link is established. This preliminary identification step allows the initiating device to know exactly which device it will communicate with, eliminating the need to browse through lists of available devices. The optical signal transmission occurs in advance, preparing the communication process and reducing subsequent complexity.
2Measurement precision
If optical signals are used for device identification, then accurate device identification is achieved, but the solution requires additional hardware components
Solution Approach 1:
The patent applies universality by utilizing the existing display screen of the communication device for transmitting identification information optically. The display screen, which is already a necessary component for user interaction, is given an additional function: transmitting device identification via optical signals. This eliminates the need for separate dedicated optical transmission hardware, achieving precise device identification without significantly increasing hardware complexity.
Solution Approach 2:
The patent implements self-service by using the device's own existing display infrastructure to generate and transmit the optical identification signal. Rather than requiring external or additional specialized hardware, the device uses its inherent display capabilities to perform the identification function. The display screen serves both its traditional purpose of showing information to users and the new purpose of transmitting identification data optically to other devices.
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
This method simplifies the process of establishing a communication link, enhances security by ensuring the correct device is targeted, and prevents unauthorized access, reducing the need for multiple failed attempts.
Implementation Method 1
the distance between the two communication facilities lies in a range in which a sensor associated with at least one of the two communication facilities can receive optical signals
Data Source
AI summary
A communication link can be established by way of a radio interface between a first mobile communication facility and a second mobile or permanently stationary communication facility. In at least one embodiment, an item of identification information is made available by one of the communication facilities as an optical signal for receipt at the cited sensor; the communication facility, to which the sensor receiving the optical signal belongs, accepts the identification information and transfers the accepted identification information as a request to set up a communication link via the radio interface with the communication facility, which makes or has made the optical signal available. The requested communication facility implements a comparison between the accepted identification information and its own identification information and permits the setup of the communication link as a function of the comparison result.