Audio Connector Data Encoding via Frequency Shift Keying
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Solution Overview
Problem
Conventional data communication methods using audio connectors are limited to analog audio signals within the human audible range, making it challenging to transmit non-audio information, such as biometric or environmental data, without interfering with telecommunication exchanges.
Innovation Solution
The system encodes non-audio signals from an accessory device into a frequency range within the audible range but outside the telephony frequency range, allowing them to be transmitted through an audio connector during a telecommunication session without interference, using techniques like frequency-shift keying modulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional audio connectors are used for data communication, then the connection is simple and ubiquitous, but the data communication is limited to analog audio signals within the human audible range
Solution Approach 1:
The audio connector is made multi-functional by enabling it to transmit both traditional audio signals and non-audio data signals through the same physical interface. The system achieves this by encoding non-audio data into the audio signal waveform, allowing the connector to serve dual purposes: audio communication and data communication, thereby improving adaptability without adding new hardware components
Solution Approach 2:
The patent embeds non-audio data information within the audio signal structure itself. The data is encoded into the waveform characteristics of the audio signal, effectively nesting data communication functionality within the existing audio signal framework. This allows the audio connector to carry both audio and data without requiring separate dedicated data transmission channels
2Adaptability or versatility
If non-audio information is transmitted through the audio connector during telecommunication, then data communication functionality is expanded, but interference with telecommunication exchanges may occur
Solution Approach 1:
The frequency spectrum is segmented into different ranges: the telephony frequency range for voice communication and the audible but non-telephony frequency range for data transmission. By separating these frequency bands, the system allows concurrent transmission of audio and data without mutual interference, maintaining telecommunication quality while enabling data communication functionality
Solution Approach 2:
Different portions of the audio signal waveform are assigned different functions: the telephony frequency portion carries voice communication while the higher frequency audible portion carries data information. This local differentiation of signal characteristics allows the audio connector to simultaneously support both telecommunication and data transmission without cross-contamination
3Adaptability or versatility
If the audio connector is used for both audio and data communication, then the functionality of mobile devices is expanded, but the frequency range utilization becomes more complex
Solution Approach 1:
The system transitions from using only the traditional telephony frequency range to utilizing the broader audible frequency range, adding a new frequency dimension for data transmission. By exploiting the higher frequency audible band that is not used for telephony, the system achieves additional data communication capability without complicating the existing telephony frequency management
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 the concurrent transmission of non-audio information, like biometric data, during telephone conversations without disrupting the audio communication, by representing it in a frequency range that is audible but not processed as part of the telephony signal, thus expanding the functionality of mobile devices.
Implementation Method 1
generating encoded signals to represent the sensor information in a first frequency range... using techniques like frequency-shift keying modulation
Data Source
AI summary
Techniques and mechanisms for exchanging information between a mobile device and another device which is to serve as an accessory to the mobile device. In an embodiment, the accessory device and the mobile device are coupled to one another via an audio connector of the mobile device. The mobile device receives via the audio connector encoded signals which represent, in a first frequency range, information generated by a sensor of the accessory device. The first frequency range is within an audible frequency range and outside of a telephony frequency range of the mobile device. In another embodiment, the encoded signals are provided to telephony logic of the host device during a telecommunication exchange between the host device and a remote device. Due to its representation in the first frequency range, some sensor information is prevented from being represented as an audio signal in the telecommunication exchange.