In-Pocket Detection Power Saving Mechanism
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently and accurately detecting phone placement contexts, such as being in a pocket or bag, due to the high power consumption of sensors like proximity and ultrasonic sensors, which hinders continuous context-aware applications.
Innovation Solution
The method involves using low power-consuming sensors like accelerometers and ambient light sensors to determine a transition state, and only powering on high power-consuming sensors like proximity or ultrasonic sensors during transitions to detect the current pocket mode, thereby reducing power consumption while maintaining accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high power-consuming sensors (proximity sensor or ultrasonic sensor) are continuously used to detect pocket mode, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent applies periodic action by using low power sensors (accelerometer and ambient light sensor) to continuously monitor for transition states, and only activating high power sensors (proximity or ultrasonic sensor) when a transition is detected. This periodic activation based on transition detection significantly reduces power consumption while maintaining detection accuracy when needed.
Solution Approach 2:
The patent uses low power sensors as intermediaries to detect transition states and trigger the activation of high power sensors. The accelerometer and ambient light sensor act as mediators that bridge the gap between continuous monitoring requirements and power consumption constraints, enabling the system to use high power sensors only when necessary.
2Use of energy by moving object
If low power-consuming sensors are used to detect transition state, then power consumption is reduced, but detection accuracy may be compromised
Solution Approach 1:
The patent applies preliminary action by using low power sensors to detect transition states before activating high power sensors. The accelerometer and ambient light sensor perform preliminary detection of movement and light changes, preparing the system to activate high power sensors only when a transition is likely occurring, thus maintaining accuracy while reducing power consumption.
Solution Approach 2:
The patent implements dynamics by dynamically adjusting sensor activation based on detected transition states. The system transitions from a static state where sensors are either always on or always off to a dynamic state where sensor activation is adaptively controlled based on real-time detection of movement and environmental changes, optimizing both power consumption and detection accuracy.
Data Source
AI summary
A method of efficient pocket detection is proposed. A wireless device determines whether it is in a transition state by using a plurality of low power-consuming sensors. The wireless device powers on a high power-consuming sensor if the device is in the transition state, or otherwise keeps the high power-consuming sensor off if the device is not in the transition state. The wireless device detects a current pocket mode of the device using the high power-consuming sensor if the device is in the transition state, or otherwise keeps a previous pocket mode if the device is not in the transition state.