Optical Audio Diffusion System for Interference-Free Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current radio-based data transmission systems face issues such as channel overlap, high-frequency absorption, and health concerns, particularly in public entertainment settings like museums, where users experience cumbersome transitions between audio themes and inconsistent audio guides due to manual channel switching and fixed broadcast schedules.
Innovation Solution
A system utilizing multiple optical radiation sources for data transmission, specifically amplitude-modulated light, allows for seamless audio signal diffusion, enabling users to interact naturally with multimedia environments by automatically adjusting audio signals based on their location and time within the environment, without requiring manual channel switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If radio transmission is used for data diffusion, then transmission coverage and accessibility are improved, but channel overlap and interference between adjacent channels occur
Solution Approach 1:
The patent replaces radio frequency electromagnetic waves with optical radiation (light waves) for data transmission. Optical waves operate at much higher frequencies and can be directed more precisely, allowing multiple channels to be transmitted simultaneously without overlapping or interfering with each other, thus eliminating the channel overlap problem while maintaining wide coverage
Solution Approach 2:
The patent changes the fundamental transmission medium parameter from radio frequency to optical frequency. This parameter change enables much higher data transmission capacity and eliminates interference issues inherent in radio spectrum sharing, as optical channels can be densely packed without mutual interference
2Productivity
If very high frequency radio transmission is used, then data transmission capacity is improved, but atmospheric absorption increases significantly
Solution Approach 1:
The patent substitutes radio frequency transmission with optical radiation transmission. Optical waves experience negligible atmospheric absorption compared to high-frequency radio waves, enabling high-capacity transmission over long distances without significant energy loss to the atmosphere
3Adaptability or versatility
If manual channel switching is required for users, then channel selection flexibility is improved, but user interaction becomes cumbersome and artificial
Solution Approach 1:
The patent implements an automated audio guide system that actively tracks user position and automatically switches channels without user intervention. The system serves itself by detecting user location and autonomously selecting appropriate audio channels, eliminating the need for manual channel switching and making interaction natural and intuitive
Solution Approach 2:
The system uses feedback from user position detection to automatically adjust audio channel selection. By continuously monitoring where users are located and what audio content is appropriate for that location, the system dynamically adapts the audio output without requiring user input, creating a responsive and natural interaction experience
4Stability of the object's composition
If fixed broadcast schedule is used for audio guide, then content delivery consistency is improved, but system adaptability to user stay duration varies
Solution Approach 1:
The patent transforms the fixed broadcast schedule into a dynamic, real-time adaptive system. Instead of following a predetermined timeline, the system continuously adjusts audio content delivery based on actual user position and detected stay duration, making the content delivery both consistent (when user is in expected location) and adaptable (to actual user behavior patterns)
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 approach reduces interference and health concerns by using optical radiation, providing a more immersive and consistent user experience by automatically mixing and adjusting audio signals in real-time based on user location, thus enhancing spatial and temporal interaction with multimedia content.
Implementation Method 1
a first and a second optical transmitting module (99', 99''), each comprising at least one photoemitter (100) emitting an amplitude modulated optical radiation
Implementation Method 2
emitting an amplitude modulated optical radiation, said first and said second optical transmitting module transmitting a first and a second modulated optical radiation according to a first and respectively a second signal
Implementation Method 3
at least one optical receiving module, comprising: at least one photoreceiver (200) adapted to receive said amplitude modulated optical radiation from at least one of said optical transmitting modules (99', 99'')
Implementation Method 4
at least one AM demodulator (202), electrically connected to said at least one photoreceiver, configured to extract, in use, a replica of said audio signal transmitted through said at least one first and/or second optical transmitting module (99', 99'')
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
A system for diffusing audio signals by means of an optical radiation, wherein said system is characterized in that it comprises: - at least one first and one second optical transmitting module (99', 99"), each comprising at least one photoemitter (100) emitting an amplitude modulated optical radiation, said first and said second optical transmitting module (99', 99") transmitting a first and a second modulated optical radiation according to a first and respectively a second signal at least of the audio type (s1(t), s2(t)); - at least one optical receiving module (199), comprising: - at least one photoreceiver (200) adapted to receive said amplitude modulated optical radiation from at least one of said optical transmitting modules (99', 99"), - at least one AM demodulator (202), electrically connected to said at least one photoreceiver (200), wherein said optical receiving module (199) is configured to generate, on at least one first output thereof, a replica electrical signal (s'(t)), replicating said audio signal transmitted from said at least one first and/or second optical transmitting module, so that: - if only the first optical radiation is received, it replicates said first audio signal (s1(t)); - if only the second optical radiation is received, it replicates said second audio signal (s2(t)); - if both the first optical radiation and the second optical radiation are received simultaneously, it replicates said first audio signal (s1(t)) mixed with said second audio signal (s2(t)), wherein the at least instantaneous intensity of the replica of said first audio signal (s1(t)) and of the replica of said second audio signal (s2(t)) is proportional respectively to the intensity of said first optical radiation and/or of the modulation thereof, and to the intensity of said second optical radiation and/or of the modulation thereof.