Multimode Audio Connector Pin Detection for USB Type-C and LMR
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Solution Overview
Problem
The inclusion of multiple connection interfaces on a single mobile communication device, such as USB Type-C and LMR, increases costs and chipset area due to the need for additional hardware and different detection mechanisms, which are not suitable for all use cases, especially for mission-critical devices requiring high-reliability audio and data signaling.
Innovation Solution
A mobile communication device with a single component that combines USB Type-C and LMR accessory detection and configuration using an electronic processor to monitor specific pins for pull-up and pull-down signals, allowing for automatic detection and configuration of either USB Type-C or LMR accessories based on detected signals, thereby reducing hardware requirements and costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple connection interfaces (USB Type-C and LMR) are included on a single mobile communication device, then support for diverse accessories is improved, but device complexity and cost increase
Solution Approach 1:
The patent implements a universal connector design where a single physical connector supports multiple accessory types (USB Type-C and LMR) through software-based detection and configuration. The system uses a unified hardware interface that can adapt to different accessory protocols, eliminating the need for separate dedicated connectors for each accessory type.
Solution Approach 2:
The patent combines previously separate USB Type-C and LMR connector functionalities into a single unified connector interface. By merging the detection and configuration mechanisms into one shared hardware component, the system reduces the total number of connectors needed while maintaining support for both accessory standards.
2Adaptability or versatility
If multiple connection interfaces (USB Type-C and LMR) are included on a single mobile communication device, then support for diverse accessories is improved, but cost increases
Solution Approach 1:
The patent implements a universal connector design where a single physical connector supports multiple accessory types (USB Type-C and LMR) through software-based detection and configuration. The system uses a unified hardware interface that can adapt to different accessory protocols, eliminating the need for separate dedicated connectors for each accessory type.
Solution Approach 2:
The patent combines previously separate USB Type-C and LMR connector functionalities into a single unified connector interface. By merging the detection and configuration mechanisms into one shared hardware component, the system reduces the total number of connectors needed while maintaining support for both accessory standards.
3Measurement precision
If separate detection mechanisms are used for USB Type-C and LMR accessories, then detection accuracy is improved, but device complexity increases
Solution Approach 1:
The patent implements an automatic detection system where the connector autonomously identifies the connected accessory type through monitoring electrical characteristics (such as pull-up/pull-down resistor configurations) and automatically configures the appropriate communication protocol without requiring manual intervention or complex external detection circuitry.
Solution Approach 2:
The system continuously monitors the electrical state of the connector pins and uses this feedback to determine the accessory type. By observing the resistance values and signal characteristics returned by the connected accessory, the system can accurately identify whether a USB Type-C or LMR accessory is connected and adjust its operation accordingly.
Data Source
AI summary
Methods and devices for connecting an accessory device to a connector port of a mobile communication device and automatically detecting an operational mode of the connector port are provided. The method includes implementing a USB Type-C device detection at an electronic processor of the mobile communication device and monitoring a first and second pin of the connector port for pull-up and pull-down signals from a connected accessory. The method also includes interrupting the USB Type-C device detection when a pull-down signal is detected and determining whether an accessory signal is detected at a third pin of the connector port. The method also includes implementing a LMR accessory detection when the accessory signal is detected and completing the USB Type-C device detection when the accessory signal is not detected.