Light-Based Messaging System for Location-Specific Communication
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Solution Overview
Problem
Existing messaging systems fail to adequately consider the locations of communicators and are inadequate in personalizing messages, with GPS-based solutions being unreliable and costly, and security systems relying on passwords or biometrics having drawbacks.
Innovation Solution
A light-based messaging system employing LED units, modulation controllers, and central servers to broadcast location-specific and personalized messages, with spatial tracking and enhanced security features, using light sources to transmit digital information and verify access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If GPS-based systems are used for location tracking and messaging, then location-based communication capability is improved, but cost and implementation effort increase
Solution Approach 1:
The patent replaces GPS-based location tracking with a light-based messaging system using LEDs and photodetectors. The system uses light signals to transmit location information and messages, substituting the mechanical/electronic GPS infrastructure with an optical communication approach that leverages existing lighting infrastructure.
Solution Approach 2:
The patent makes lighting fixtures serve multiple functions: they provide illumination while simultaneously acting as communication transmitters and receivers. The LEDs and photodetectors enable the same infrastructure to handle both lighting and location-based messaging, eliminating the need for separate GPS systems.
2Reliability
If traditional security systems using passwords, physical keys or biometric information are used, then access control functionality is provided, but security vulnerability and user burden increase
Solution Approach 1:
The patent implements a security system where the user's mobile device automatically generates and transmits light-based authentication signals without requiring manual password entry or physical key presentation. The system uses the device's ambient light sensor and LED to automatically verify location and authenticate access, making the security process transparent to the user.
Solution Approach 2:
The patent replaces traditional authentication mechanisms (passwords, physical keys, biometric scanners) with light-based optical communication. The mobile device uses its LED to transmit authentication data and the ambient light sensor to receive verification signals, substituting mechanical and electronic authentication systems with an optical approach.
3Measurement precision
If light-based messaging system is implemented, then message personalization and location precision are improved, but system complexity increases
Solution Approach 1:
The patent uses the mobile device's existing light sensor and LED components for multiple purposes: ambient light detection for location determination, LED for transmitting messages, and the same components for authentication. This multi-functional use of standard device components achieves precise location tracking without adding specialized hardware.
Solution Approach 2:
The patent introduces a central server as an intermediary that manages the complexity of light-based communication protocols, message routing, and location calculation. The server handles the complex processing while mobile devices perform simple light signal transmission and reception, distributing system complexity appropriately.
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 precise location-based and characteristic-based message targeting, effective spatial tracking, and enhanced security without the limitations of traditional GPS and biometric systems, providing efficient and cost-effective communication and access control.
Implementation Method 1
each including at least one light source (e.g., light-emitting diode or LED)
Implementation Method 2
a receiving unit that includes: (i) a light sensor, and (ii) a processor coupled to the light sensor
Data Source
AI summary
Provided are, among other things, systems, methods and techniques for light-based communication. One representative embodiment includes: messaging units disposed at different locations within a space, each including at least one light source (e.g., light-emitting diode or LED); at least one messaging/modulation controller coupled to the light sources and configured to turn the light sources on and off so as to broadcast input digital messages; a central server coupled to the messaging/modulation controller(s) and configured to selectively provide messages to the messaging/modulation controller(s) for broadcast by different messaging units; and an associate device coupled to the central server and configured to: (a) display a user interface for manually inputting information about individuals within the space and (b) provide such information to the central server, where the central server selects messages to be broadcast by the messaging units based on the information received from the associate device.