Bridge Board Bootloader Recovery for Sealed Mobile Devices
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Solution Overview
Problem
Mobile electronic devices cannot recover their bootloader without disassembly, leading to inefficiencies in the development process and potential compromise of waterproof and dustproof capabilities.
Innovation Solution
A method and system involving a bridge board with internal paths and selectors that transmit bootloader recovery signals and data between the device and a host, allowing bootloader recovery without disassembly, using different communication schemes like UART and USB.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If the bootloader recovery is performed by disassembling the mobile electronic device, then the bootloader can be recovered, but the waterproof and dustproof capabilities are compromised
Solution Approach 1:
The patent segments the bootloader recovery process into two distinct paths: a first internal path for normal operation and a second internal path for recovery operations. The path selection unit dynamically routes signals through appropriate paths based on the operational state, enabling bootloader recovery without physical disassembly while maintaining device sealing integrity
Solution Approach 2:
The path selection unit acts as an intermediary component that mediates between the external recovery device and the bootloader. It receives recovery requests through the connector and selectively activates the second internal path to transmit recovery data to the bootloader, enabling indirect recovery access without compromising the device's waterproof and dustproof structure
2Ease of repair
If the bootloader recovery requires disassembly of the device, then the bootloader can be recovered, but the development process efficiency is reduced
Solution Approach 1:
The patent implements preliminary action by pre-configuring the second internal path and path selection unit within the device structure. This allows the recovery mechanism to be activated immediately when needed, eliminating the time-consuming disassembly process and enabling rapid bootloader recovery during development and testing phases
Solution Approach 2:
The connector and path selection unit are designed with multi-functionality, serving both normal device operation through the first internal path and bootloader recovery through the second internal path. This universal design enables the same hardware structure to support both operational modes, improving development efficiency without adding separate recovery hardware
Data Source
AI summary
In a method of recovering a bootloader in a mobile electronic device, a bootloader recovery signal is transmitted from a bridge board to the mobile electronic device. The bridge board includes a first internal path and a second internal path. The mobile electronic device includes a third internal path and a fourth internal path. The bootloader recovery request signal is transmitted based on the first internal path and the third internal path. a boot mode of the mobile electronic device is changed based on the first internal path and the fourth internal path in response to receiving the bootloader recovery request signal. Bootloader recovery data is transmitted from a host device to the bridge board based on the changed boot mode. The bootloader recovery data is transmitted from the bridge board to the mobile electronic device based on the second internal path and the third internal path.