Foldable Device Hard Disk Protection Trigger Switch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for protecting hard disks in foldable portable electronic devices, such as notebook computers, are inadequate as they fail to consider the actual handling practices of users and often result in data loss due to improper carrying and vibration, which can cause the magnetic read/write head to collide with the disk, leading to data destruction.
Innovation Solution
A system comprising a trigger, a lid switch, and a logic judgment module that generates signals based on the device's position relative to a flat surface and its operational state, triggering a hard disk protection procedure to park the magnetic read/write head when the device is moved or folded, ensuring data safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a tri-axis digital accelerometer chip is used to detect vibration, then the hard disk can be protected from vibration damage, but the component cost increases significantly
Solution Approach 1:
The patent replaces the electronic accelerometer-based vibration detection system with a mechanical trigger switch system. The trigger switch detects device movement through mechanical action when the device is lifted from a flat surface, generating signals to park the magnetic read/write head without requiring expensive electronic sensors.
Solution Approach 2:
The patent employs a simple, low-cost trigger switch mechanism instead of an expensive accelerometer chip. The trigger switch is a basic mechanical component that provides sufficient functionality for detecting device movement and initiating hard disk protection, significantly reducing component costs.
2Reliability
If vibration detection is based on accelerometer signals, then hard disk protection can be activated, but the detection accuracy is insufficient because it only considers direct vibration not user handling actions
Solution Approach 1:
The patent uses a trigger switch positioned at the bottom of the device that is designed to be pressed when the device is lifted from a flat surface. This preliminary mechanical action detects the user's handling behavior (picking up the device) before any potential vibration or movement that could harm the hard disk, allowing proactive protection activation.
Solution Approach 2:
The trigger switch acts as an intermediary mechanical element between the device structure and the control system. It translates the physical act of lifting the device from a flat surface into an electrical signal that initiates the hard disk protection sequence, providing more accurate detection of user handling actions compared to direct vibration sensing.
3Reliability
If the magnetic read/write head is parked during device movement, then data safety is ensured, but the hard disk operation is interrupted
Solution Approach 1:
The patent applies preliminary protective action by parking the magnetic read/write head on the disk surface when the trigger switch detects that the device is being lifted from a flat surface. This preemptive measure prevents potential data damage from vibration or accidental drops during device transport, ensuring data safety before any harmful movement can occur.
Solution Approach 2:
The patent implements dynamic control of the hard disk operation based on real-time detection of device state. The magnetic read/write head is parked only when necessary (when the device is lifted from a flat surface as detected by the trigger switch), and resumed when the device is placed back on a flat surface. This dynamic approach balances data protection with operational continuity, minimizing interruptions to hard disk productivity.
Data Source
AI summary
A foldable portable electronic device, a system and a method for protecting a built-in hard disk thereof are disclosed. The foldable portable electronic device includes a display and a main body. The system includes a trigger, a lid switch, and a logic judgment module. When the foldable portable electronic device is away form a flat surface, the trigger generates a first signal; when the display is folded onto the main body, the lid switch generates a second signal. The logic judgment module determines the method to control and protect the hard disk in accordance with the first signal and the second signal.