Automatic Hold Switch Using Ambient Light Detection
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Solution Overview
Problem
Portable electronic devices with manual hold switches require users to perform additional actions to lock and unlock input devices, increasing the number of steps needed to make entries, especially in devices that are frequently stowed and used.
Innovation Solution
Implementing a control mechanism with sensors that automatically switch between input and hold modes based on environmental conditions, such as ambient light, to enable or disable input devices, reducing the need for manual switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a manual hold switch is used to lock input devices, then accidental entries are prevented, but the number of user actions increases
Solution Approach 1:
The system automatically switches between hold and input modes based on sensor-detected environmental conditions, eliminating the need for manual user intervention. The device serves itself by autonomously determining when to lock or unlock input devices based on contextual cues from sensors.
Solution Approach 2:
The manual mechanical hold switch is replaced with an automated control system that uses sensors to detect environmental conditions and automatically adjusts the hold state. This substitutes the mechanical switching action with an automated electronic control mechanism.
2Reliability
If the hold switch is continuously toggled for frequent stowing and using, then input devices are protected during storage, but user convenience deteriorates
Solution Approach 1:
The system continuously monitors environmental conditions through sensors and uses this feedback to automatically adjust the hold state. When the device is detected to be in a storage environment (e.g., dark, stationary), it automatically enters hold mode; when detected to be in use (e.g., light detected, motion sensed), it automatically switches to input mode without user intervention.
Solution Approach 2:
The system proactively switches to hold mode before the user would manually activate it by detecting storage conditions in advance. Similarly, it prepares to switch to input mode by monitoring for usage conditions, eliminating the need for reactive manual switching.
3Ease of operation
If automatic hold feature is implemented using sensors, then manual switching actions are reduced, but device complexity increases
Solution Approach 1:
Existing environmental sensors in the device (such as ambient light sensors already present for display brightness control) are repurposed to also trigger the automatic hold feature. This allows the system to gain automatic hold functionality without adding dedicated new sensors, thereby minimizing the increase in device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution simplifies user interactions by automatically locking or unlocking input devices based on usage contexts, reducing the number of actions required and enhancing user convenience.
Implementation Method 1
measuring ambient light surrounding the hand-held media player
Data Source
AI summary
An automatic hold switch is disclosed. The automatic hold switch provides a means for automatically switching a hold feature on and off. When the hold feature is on, one or more input devices of a portable electronic device are disabled or prevented from providing input signals. When the hold feature is off, one or more input devices of a portable electronic device are enabled or allowed to provide input signals. Because the user no longer has to manually control the hold feature, the number of actions that need to be taken by the user is reduced. In one example, the automatic hold switch is embodied with light sensors that detect when the device is in a dark environment and when the device is in a light environment. A dark environment indicates to the portable electronic device that the user wishes not to input and therefore the hold feature is turned on. A lighted environment indicates to the portable electronic device that the user wishes to input and therefore the hold feature is turned off.