Mobile Device Sub-Processor Grip Detection Sleep State
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Solution Overview
Problem
Mobile terminals face challenges in efficiently managing power consumption due to the need for frequent wake-ups of the main processor, which can be undesired and result in increased current consumption, especially with complex menu structures and diverse functions.
Innovation Solution
A mobile terminal equipped with a touchscreen, motion sensor, grip sensor, and sub-processor that maintains the main processor in a sleep state unless specific user motions or gaze is detected, allowing for selective wake-up and execution of applications based on user interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the main processor is frequently woken up to handle user interactions and application execution, then the terminal can respond promptly to user needs, but power consumption increases significantly
Solution Approach 1:
The processor is divided into two operational states: a low-power sleep state for basic functions and a full-power active state for complex operations. The system segments processing tasks by activating the main processor only when necessary, while using a sub-processor or simplified processing mode for routine operations during sleep state.
Solution Approach 2:
The system performs preliminary assessment of user actions through sensor data (motion sensors, touch sensors, proximity sensors) before activating the main processor. This preliminary detection allows the system to distinguish between intentional user interactions requiring processor wake-up and unintentional movements that should be ignored.
2Use of energy by moving object
If the main processor remains in sleep state to conserve power, then energy consumption is minimized, but the terminal may fail to detect intentional user actions
Solution Approach 1:
Sensor data serves as an intermediary between the user and the main processor. Motion sensors, touch sensors, and proximity sensors continuously monitor user interactions in the background during sleep state, filtering and interpreting signals to determine whether the main processor should be activated. This intermediary layer enables reliable intent detection without continuous processor operation.
3Ease of operation
If the terminal activates the main processor for every detected motion, then all user actions are responded to, but unintended wake-ups increase power consumption
Solution Approach 1:
The system uses feedback from multiple sensor inputs (touch sensor, proximity sensor, motion sensor) to validate user intent before activating the main processor. By cross-referencing signals from different sensors, the system can distinguish between intentional interactions (e.g., picking up the device and touching the screen) and unintentional movements (e.g., accidental drops or movements in the user's pocket), activating the processor only when feedback confirms deliberate user action.
Data Source
AI summary
A mobile terminal according to the present invention comprises a motion sensor sensing a motion of the user while maintaining an activation state even when the main processor is in a sleep state; a grip sensor being deactivated in case the main processor is in the sleep state and sensing the user's grip; and a sub-processor, where the sub-processor, in case a predetermined motion of the user is detected while the main processor is in the sleep state, determines the user's grip by activating the grip sensor and wakes up the main processor in the event of sensing the user's grip but keeps the main processor in the sleep state otherwise.