USB Communication Mode Switching with Functionality Reset
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Solution Overview
Problem
The existing communication modes between in-vehicle devices and smartphones, which switch to a unique communication mode using a special protocol, often disable existing functions such as mirror link and music playback, as they change the device classes and interfaces, leading to a loss of functionality.
Innovation Solution
An electronic device and method that allows selection between normal and unique communication modes, with a request unit to switch modes, a search unit to identify usable device classes, a determination unit to assess changes, and a reset unit to revert if disadvantages occur, enabling alternative connections and maintaining primary functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the device switches to a unique communication mode using a special protocol, then communication flexibility is improved, but existing functions such as mirror link and music playback are disabled
Solution Approach 1:
The patent implements dynamic switching between normal communication mode and unique communication mode based on functional requirements. The electronic device can adapt its communication protocol in real-time, enabling it to use unique protocol when flexibility is needed while falling back to standard device classes when compatibility with existing functions is required, thus resolving the contradiction between adaptability and reliability
Solution Approach 2:
The patent changes the communication mode parameter dynamically. By switching between different communication protocols (normal vs. unique) based on operational context, the system optimizes communication flexibility when needed while preserving function compatibility when operating in standard mode, addressing the technical contradiction
2Adaptability or versatility
If the device switches to a unique communication mode, then unique protocol communication is enabled, but device classes and interfaces are changed causing function loss
Solution Approach 1:
The system dynamically adjusts communication mode based on functional requirements. When unique protocol capability is needed, it switches to that mode; when existing functions need to remain usable, it maintains normal communication mode with standard device classes, thus balancing adaptability with ease of operation
Solution Approach 2:
The patent prevents function loss by implementing preliminary checks before switching to unique communication mode. The determination unit assesses whether switching would cause disadvantageous changes, and the reset unit can revert the switch if functions would be lost, thus preventing rather than correcting the problem
3Adaptability or versatility
If the electronic device requests switching to second communication mode, then communication mode flexibility is improved, but existing device classes become unusable
Solution Approach 1:
The patent implements a feedback mechanism where the determination unit evaluates the impact of mode switching on existing device class compatibility. Based on this feedback assessment, the system decides whether to permit the switch or maintain the current mode, thus balancing adaptability with reliability
Solution Approach 2:
Before switching to the second communication mode, the system performs preliminary determination to assess whether the switch would cause disadvantageous changes. This preliminary action prevents incompatible switches that would lose device class functionality, resolving the contradiction
Data Source
AI summary
An electronic device includes a connection unit that enables a USB connection to a smartphone, a normal communication mode in which communication is performed by using a device class prepared in advance in the smartphone, a request unit that makes a request for switching to a unique communication mode, a search unit that searches for a device class usable in the normal communication mode after the request for switching to the unique communication mode has been made, a determination unit that determines, on the basis of a search result, whether or not a disadvantageous change has occurred in the normal communication mode, and a reset unit that resets the USB connection when it is determined that a disadvantageous change has occurred.