USB Type-C Connector Signal Path Controller for Audio
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Solution Overview
Problem
Existing audio connectors, such as TRRS jacks, are bulky and inefficient for noise cancellation in portable devices due to the need for additional connections and power sources, and lack a standard arrangement for multiple analogue audio channels.
Innovation Solution
A data controller for a USB Type-C connector that establishes separate signal paths for multiple analogue audio channels, allowing bidirectional data transfer between a host device and a peripheral device, including noise cancellation microphones, using a path controller and switch array to determine connection configurations and establish appropriate signal paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If noise cancellation electronics are provided in the peripheral device (headset), then noise cancellation function is achieved, but the device becomes bulky and heavy due to additional battery and electronics
Solution Approach 1:
The patent extracts the noise cancellation electronics and battery from the peripheral device (headset) and relocates them to the host device. This is achieved by providing additional contacts in the connector that enable the host device to receive signals from multiple microphones and perform noise cancellation processing, thereby eliminating the need for bulky electronics in the headset while maintaining the noise cancellation function.
2Reliability
If extra connections are added to the audio jack for noise cancellation microphones, then noise cancellation capability is enabled, but the connector becomes more complex and non-standard
Solution Approach 1:
The patent applies universality by designing a connector with additional contacts that can serve multiple functions. The extra contacts not only enable noise cancellation microphone connections but also provide ground connections and support for additional audio channels. This multi-functional approach allows the connector to handle both standard audio transmission and advanced noise cancellation features without requiring completely separate specialized connectors.
3Adaptability or versatility
If standard audio connectors are used, then compatibility is maintained, but multiple analogue audio channels cannot be efficiently transferred
Solution Approach 1:
The patent segments the audio signal transmission by providing separate dedicated contacts for different audio channels and functions. Instead of using a single shared connection for multiple purposes, the connector is divided into distinct contacts for left audio, right audio, microphone, noise cancellation microphones, and ground connections. This segmentation enables efficient transfer of multiple analogue audio channels simultaneously while maintaining clear signal separation.
4Ease of operation
If traditional jack connectors are used, then audio data transfer is possible, but mechanical robustness is insufficient for pulling and twisting in pocket use
Solution Approach 1:
The patent incorporates a spring mechanism in the plug connector that provides dynamic mechanical support. The spring allows the connector to flex and absorb pulling and twisting forces that occur during pocket use, while maintaining reliable electrical contact. This dynamic element enhances the mechanical robustness of the connector without interfering with its audio data transfer functionality.
Data Source
AI summary
This application relates to methods and apparatus for transfer of data between a host device (400) and a peripheral device (300) via a USB Type-C connector (100; 304) of the host device. A data controller is described that has a path controller (309, 310; 706) for establishing signal paths between circuitry of the host device and contacts (101) of said USB Type-C connector. The path controller is operable in at least first and second modes. In the first mode the path controller establishes separate signal paths to each of at least first, second, third and fourth contacts (A6, A7, B6, B7) of the USB Type-C connector and a plurality of the established signal paths are for transfer of analogue audio data. In the second mode the path controller establishes a pair of signal paths to only a subset of said first to fourth contacts to provide a differential digital data path.