Audio Spotlight Laser Receiver Device-Free Communication
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Solution Overview
Problem
Existing communication systems, such as two-way radios and cell phones, are inconvenient for hands-free use, especially when both hands are occupied, and may not function over long distances or when the recipient lacks a device or unknown frequency, limiting effective communication in various scenarios.
Innovation Solution
A device-free communication system utilizing an audio spotlight to project a narrow audio signal and a laser audio receiver for focused two-way communication, allowing simultaneous transmission and reception without requiring the recipient to operate the system, with optional manual or automatic aiming and recording capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional two-way radios or cell phones are used, then communication can be established, but the device must be manually operated and kept on constantly, which is inconvenient when hands are occupied
Solution Approach 1:
The system enables the recipient to receive communications automatically without manual operation. The audio spotlight transmits audio signals and the laser receiver captures responses autonomously, eliminating the need for the recipient to manually operate a device while maintaining hands-free capability for the operator.
Solution Approach 2:
The patent replaces traditional mechanical radio frequency communication with an optical-based system using audio spotlight and laser receiver. This substitution enables more precise directional transmission and reception, allowing hands-free operation while reducing the complexity of manual device handling.
2Length of stationary object
If simple voice communication is used, then no device is needed, but communication is limited to short distances where shouting is possible
Solution Approach 1:
The audio spotlight creates a highly focused, directional audio transmission path between the operator and recipient. This localized concentration of acoustic energy enables clear communication over long distances by directing sound precisely along the transmission path, overcoming the natural attenuation that limits simple voice communication.
Solution Approach 2:
The system transitions from omnidirectional voice propagation to highly directional focused transmission. By concentrating acoustic energy in a specific spatial dimension through the audio spotlight, the system extends effective communication distance beyond the limits of unaided human voice.
3Adaptability or versatility
If the recipient has a cell phone or radio, then communication can be established, but the phone number or radio frequency may not be known to the communicator
Solution Approach 1:
The audio spotlight and laser receiver system acts as an intermediary that eliminates the need for pre-configured communication parameters. Instead of requiring known phone numbers or frequencies, the system establishes direct optical-acoustic communication between operator and recipient, bypassing the need for intermediary network infrastructure or pre-shared identification information.
4Adaptability or versatility
If the recipient lacks a communication device, then no traditional communication can occur, but the system should still enable communication with the person
Solution Approach 1:
The patent extracts the communication capability from traditional devices and implements it directly through the audio spotlight and laser receiver system. The recipient needs only to be within the audio transmission path and able to speak back, eliminating the requirement for them to possess or operate a radio, cell phone, or other communication device while maintaining reliable two-way communication.
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 effective, hands-free two-way communication over long distances, even when the recipient lacks a device or is in an area under supervision, with independent send and receive channels for simultaneous communication, enhancing usability in scenarios like law enforcement and surveillance.
Implementation Method 1
an audio spotlight to project a narrow audio signal
Implementation Method 2
a laser audio receiver to listen to audio responses from that person
Data Source
AI summary
A two way communication system that does not require the use of a device by one of the communicators. The system employs an audio spotlight to project a signal to a specific location, where one person is, and a laser audio receiver to receive the response. Both the audio spotlight and the laser audio receiver are directed by a user seeking to communicate with the person at long range.