I/O Interface Mode Control for External Device Recognition
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face recognition and operation failures when an external device is connected in charging mode without supporting it, and unnecessary charging occurs when the charging mode is established without checking the external device's capabilities.
Innovation Solution
An input/output interface control method and device that measures the electric current flowing through the power supply line, compares it with a reference value, and changes the operating mode to data communication mode if the current is smaller than the reference value, preventing failures in recognition and operation, and stopping unnecessary charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the I/O interface operates in charging mode, then the external electronic device can be charged, but recognition and operation failures occur when the external device does not support charging mode
Solution Approach 1:
The system performs preliminary detection of the external device's charging support capability before establishing charging mode. The controller detects whether the external electronic device supports charging mode through the I/O interface, and only establishes charging mode after confirmation, preventing recognition and operation failures.
Solution Approach 2:
The system implements feedback mechanisms to detect the external device's response to charging mode establishment. Based on the detected feedback signal indicating whether the external device supports charging mode, the controller dynamically adjusts the operating mode to ensure reliable operation.
2Productivity
If the I/O interface automatically establishes charging mode, then charging function is provided, but unnecessary charging occurs when the external device does not require it
Solution Approach 1:
The controller performs preliminary detection to determine whether the external electronic device requires charging before establishing charging mode. By detecting the device's charging status and requirements in advance, the system avoids unnecessary charging operations and energy waste.
Solution Approach 2:
The external electronic device indicates its own charging requirements through detectable signals, allowing the controller to autonomously determine whether to establish charging mode without user intervention. The system serves itself by detecting and responding to the external device's actual charging needs.
3Ease of operation
If manual mode switching is required, then precise control over I/O interface mode is achieved, but user convenience is reduced due to inability to know current mode
Solution Approach 1:
The system automatically detects the external device's capabilities and requirements, then autonomously selects and switches the appropriate operating mode without requiring manual user input. The controller performs self-service by gathering information about the external device and making intelligent mode selection decisions.
Solution Approach 2:
The system provides feedback to the user about the current operating mode through detectable signals or displays, eliminating the user's inability to know the current mode. Based on feedback from the external device about its capabilities, the system communicates the established mode back to the user for transparency.
Data Source
AI summary
An electronic apparatus according to an embodiment of the present disclosure may include an input/output interface, the mode of which can be changed to a data communication mode or a charging mode. An electronic apparatus according to an embodiment of the present disclosure may include: a connector to which an external electronic apparatus having an interface that can be connected to an input/output interface is connected; a power supply unit for supplying power to the external electronic apparatus through a power supply line connected to the connector; a host controller for controlling data transmission from and to the external electronic apparatus; and a mode controlling unit for measuring electric current flowing through the power supply line, changing an operation mode on the basis of a result obtained by comparing the electric current value with a reference value, and controlling operations of the power supply unit and the host controller according to the operation mode.